2010 Dell Services White Paper Template

Seeking a rewarding and challenging career with an IT company where I will be utilizing my skills and capabilities in software application.

EXPERIENCE..

1. eInfochips Pvt. Ltd, Ahmedabad Project Title:

Bioscrypt Enterprise Access Solutions Project Overview: Bioscrypt Enterprise Access Solutions is a client server product of L-1 Identity Solutions, Inc. and developed by eInfochips. A Biometric device, which has a combination of Hardware, Firmware and Software. Bioscrypt provides the rich functionality of the Biometric(Fingerprint & Finger vein) as well as Smart card access of the Organization.

Platform: MS WINDOWS XP

Languages: C#, .Net Framework 3.5

Database: SQL Server 2008

QA Team member: 5

Role: Quality Analyst Test Engineer Duration: June 2010- Till Date.

Responsibility:

Conduct Functional, Regression, confidence and System Testing for various modules.

Develop test cases to test the complete functionality of the application. Involve in functional study of application.

Co-ordinate with development team to resolve quality issues. Responsible for execution of Installation Qualification. Identifying, reporting and monitoring defects.2. Sai Infosystem (I) Pvt. Ltd, Ahmedabad

Project Title: Testing Services

Project Overview: Sai Infosystem, a hardware and software service provider is in process of implementing an in-house developed ERP system (Window Application) and a portal application (Web Application).This ERP system has modules for Sales, Purchase, Finance and Payroll. Whereas portal supports CRM, HRM, Project Management, and After Sales Service functions.

Duration: January 2009- Till Date.

Role: Quality Analyst (QA)

Responsibilities:

Identify, report and monitor defect

Responsible for preparation of Functional Test Specification and System test Specification

Responsible for execution of Functional Test Specification and Release Test Specification

Involved in Risk Analysis before Regression Testing

Worked with development team to resolve quality issues

Co-ordinate efforts with cross-functional team members to ensure that software quality assurance

Responsible for creating test environment for web testing

Responsible for preparation and execution of Operational Qualification

Responsible for execution of Installation Qualification

Responsible for performing Sanity Testing Responsible for ISO 9001 audit activity of Design & Development Dept.3. 3i-infotech Limited, Delhi (e-Governance Vertical)

Project Title: e-District

Project Overview: The objectives of the e-district include backend computerization to enable efficient delivery of government services and to proactively provide a system of spreading information on the Government schemes, planned developmental activities and status of current activities. Under National e-Gov. Plan.

Duration: March 2008- July 2008.

Role: IT Consultant.

Responsibility:

Requirement gathering from different Gov. Depts.

Coordinating among different Gov. Depts. & Officials.

Providing support in Bidding process & Tenders.

4. TRANSBIT TECHNOLOGIES, Hyderabad (Product Company) Project Title: Bits

Project Overview:Bits is a Customizable Enterprise-wide Issue Tracking and Management solution product that enables the organization to do the managed communication and collaborate to achieve its objectives

Platform: MS WINDOWS XP

Languages: JAVA, HTML with CSS

Database: SQL Server 2005

Team size: 3

Duration: January 2007- February 2008 (1 year 2 months)

Responsibility:

Involved in re-designing and maintenance of an existing module Reporting in tBits

Involved in Understanding the business requirements and Developed test cases to test the complete functionality of the application.

Involved in functional study of application.

Conducted Functional, Regression, and System Testing for various modules.

DegreeBoard/UniversityYear of Passing% Marks

M.C.AMIET, Meerut (U.P. Technical University)200770%

B.Sc.C.C.S University, Meerut200363%

Date of Birth : 21-09-1982

Gender : Male

Contents

31.0 Understanding of Automatic dishwashing

71.1 Classification of dishwashers

91.2 Components of dishwasher

161.3 Dishwasher wash mechanisms

221.4 Test methods for ENERGY STAR commercial dishwasher

341.5 Calculations for ENERGY STAR commercial dishwasher

411.6 Mechanical dishwashing standards

431.7 Types of Programs in Dishwasher

441.8 Exploded view of dishwasher Sub-assemblies

1.0 Understanding of Automatic dishwashingWhat is function of Dishwasher? The function of the dishwasher is to provide the mechanical action necessary to distribute and direct the detergent solution and rinse waters over, under and around the dishes to loosen and remove soil. The dishwasher must also remove soil-laden waters from the machine after each phase of the cycle and provide for the drying of dishes after the cleaning process has been completed

Washing system, Automatic dishwashers vary in the design of their washing systems (or the means by which water is distributed). Some have a single water source, others may have several water sources. Water is distributed in dishwashers by spray arms or spray towers (or in the case of some older models by an impeller). The design of the spray arms or towers may differ in size, shape and placement in the dishwasher, or in the number, size and location of their water ports (holes through which water is forced). All of the washing systems do a good job, but those with fewer water sources require greater care in loading the dishes to prevent blocking the washing action to various parts of the machine, especially the corners.

Role of water

It is to dissolve and carry detergent, wet and loosen soil and effectively rinse the soil away. The velocity with which water is distributed in the dishwasher provides the scrubbing action to loosen and remove soil.Amount of water, cleaning in a dishwasher is accomplished with a relatively small volume of water. Contrary to what some people think, the dishwasher does not fill completely as does a clothes washer. The dishwasher, instead, employs several small fills during a cycle to accomplish the washing and rinsing operations. The total volume of water used in a complete cycle can vary from 6 - 10 gallons, depending on the number of washes and rinses included in that particular cycle.Water pressure in a home may be noticeably reduced at some times because of numerous household water demands. As a result, insufficient water in the dishwasher could occur. This can be avoided by keeping bathing, laundering and other activities requiring quantities of water to a minimum while the machine is in use.The temperature of the water is an important factor in dissolving detergent, removing food soils and drying dishes properly. To do these things most effectively, the water temperature at the dishwasher should not be lower than 130 degrees F (54.4 degrees C). As temperature is reduced, the removal of greasy and oily soils becomes more difficult; spotting and filming on dishes may occur as well as improper drying.The amount of hardness minerals and other dissolved solids in water present obstacles to good automatic dishwashing results. Hardness minerals can cause spotting and filming on dishware. They must be effectively tied up or sequestered if the results are to be satisfactory. Hardness of water is determined by the amount of calcium and magnesium in the water. It varies from locality to locality and season to season. Water hardness is expressed in grains per gallon (gpg), parts per million (ppm) or milligrams per liter (mg/L)

To find out the water hardness in your area, call the local water company, public utility consumer service department or the home economist at the Cooperative Extension Service office.The detergent

Automatic dishwashers require detergents with very special characteristics because of the conditions under which the detergent must work. One of its essential characteristics is that it must produce little or no suds or foam because too much foam can inhibit the washing action. Other important functions that a dishwasher detergent should perform are the following:

Make water wetter (reduce surface tension) to penetrate and loosen soil. Tie up water hardness minerals to permit the detergent to do its cleaning job.

Emulsify greasy or oily soil.

Suppress foam caused by protein soils such as egg and milk.

Help water to sheet off surfaces of dishes, thus minimizing water spots.

Rinse agent

Some dishwashers have automatic rinse agent dispensers which release a liquid wetting agent into the final rinse cycle. Rinse agents in solid form are also available for use in dishwashers without the dispenser. The rinse agent allows the water to sheet off dishes rather than dry in droplets, thus helping to eliminate spotting. It is particularly helpful in hard water areas and when heat is eliminated in the dry cycle to conserve energy.

Changes in Automatic Dishwasher DetergentsAlthough phosphate was removed from the major brands of laundry detergent by 1993, it took longer for manufacturers to develop dishwasher detergent products with only trace amounts of phosphate. Because of the different role phosphorous plays in cleaning in the low water, no suds dishwasher conditions, removing phosphate from dishwasher detergent presented manufacturers with a difficult challenge in reformulation. After 20 years of innovations, new products are now available.

What did phosphate do? When used in automatic dishwashing detergents, phosphate helped to remove food and grease, reduce spotting and filming, control water hardness and suspend the bits of food so they were not redistributed on your dishes.What impact does phosphate have on the environment? Phosphate supports the growth of plants, including algae. When too much phosphate is present, excessive amounts of algae can develop. This may lead to undesirable water quality impacts, including reductions in aquatic life, and poor taste and odors in drinking water.So, is reduced phosphate dishwashing detergent better for the environment? Scientific studies demonstrate that a noticeable improvement in water quality would be affected only through decreases across all phosphorus-contributing sources, including fertilizer (residential and agricultural), construction run-off and poorly-treated municipal sewage. Although phosphate from automatic dishwashing represents a minimal contribution in the environment, members of ACI are doing their part.Safety tips

Store automatic dishwasher detergent out of the reach of children, especially toddlers who like to taste and touch everything within their reach.

Never store automatic dishwasher detergent and other household cleaning products in low cabinets that are accessible to small children. An upper wall cabinet that is within easy reach for convenient use is safer.

Store all household cleaning products away from food products.

Keep automatic dishwasher detergent in original container.

Another child safety measure is to add detergent just before turning on the dishwasher. Return the product to storage shelf immediately.

On completion of the cycle, check to be sure that no detergent is left in the dispenser cups. Clean out if necessary.

When discarding containers, be sure they are empty and placed in a covered receptacle.

Hot water is essential to effective results in automatic dishwashing. To prevent possible burns and scalds, exercise caution, especially with young children, when hot tap water is being used in any area of the home.

Energy saving tips

Load dishwasher correctly for best results.

Use recommended amount of automatic dishwasher detergent.

Operate dishwasher only when a full load is accumulated.

Use shorter cycle if suitable for amount of soil on dishes.

Eliminate heat during dry cycle if water spotting is not a problem.

Run the appliance during off-peak hours.1.1 Classification of dishwashers Based on installation:Built in dishwasher, it is a dishwasher which is permanently connected to the household water supply lines and may be installed to the electrical supply either permanently or with a power cord.

Portable dishwasher, it is a dishwasher which is not permanently connected to the household water and electric supply lines. It can be mounted on wheels and easily moved from one place to another in normal use.Convertible dishwasher, it is a portable dishwasher which has been specifically designed so that, with modifications, it may be "converted" or changed readily to be permanently installed, placed and used as any other built-in dishwasher

Free-Standing dishwasher, it is a dishwasher of the built-in or convertible type provided with a top and side enclosure, installed as a free-standing unit instead of under the kitchen work surface or countertop, and may or may not be permanently connected to the household water and electric supply.Based on loading

A front loading dishwasher is a type of a dishwasher with a front door opening through which the machine is loaded or unloaded.A top opening dishwasher is a type of dishwasher with a top cover or lid that is raised to provide an opening through which the machine is loaded or unloaded.Based on operation

An automatic dishwasher is one in which, after one setting of controls, performs a complete cycle and stops without further attention by the user.Non-automatic dishwasher is one which requires some manual operation or resetting of the controls during the cycle in order to complete a cycle1.2 Components of dishwasher Control board

The control mechanism used is a simple electro-mechanical setup, situated inside the control panel door. The dishwasher part that regulates the time for every process during dishwashing and at the same time controls the timing of every function of other parts such as detergent dispenser, wash spray and drainage.Water inlet valve

The inlet valve has an electrical connector that is coded to ensure it is not mixed up. It is fitted with a filter, which can be removed for cleaning. Both single and safety valves are used as inlet valves. The inlet valve contains a filter to stop particles then a flow limiter to limit the flow to a maximum of 4 L (1 gallon)/min. It opens when the water pressure exceeds 0.3 bar (4.3 psi) and provides full flow at about 2 bar (29 psi). It has a pressure range of 0.3 bar (4.3 psi) to 10 bar (145 psi). The inlet valve is fitted to the air gap and can be replaced from the rear of the machine.

Purpose: To ensure that the machine is supplied with water for the different dishwashing cycles.The safety valve has two independent valve seats, each controlled by a separate electromagnet. The valve seats are connected in series. This doubles the safety factor. The electromagnets are also connected in series (electrically), which means each magnets rated voltage is half the mains voltage (e.g., a 230 V valve = 2 x 115 V coils)The single valve comprises an electromagnet and a valve seat.Circulation pump:The circulation pump comprises an asynchronous motor with a capacitor and pump housing with an impeller. The impeller and seals cannot be replaced separately; rather the entire pump must be replaced. The circulation pump can be rated 220-240V, 50/60Hz, as well as 120V, 60Hz. Purpose: To provide the spray system with the water pressure necessary for the dishwashing process.Spray arm diverter

The spray arm diverter is under the spray arm hub on the underside of the cleaning compartment. The water from the circulation pump flows through the spray arm diverter, which alternates the flow of water between the upper and lower spray arms. The spray arm diverter comprises a synchronous motor that drives a disc valve. The disc has a smaller opening and a larger opening and as it rotates it distributes the water to the spray arms at low or high pressure. Information on the disc position is sent to the control unit. The spray arm diverter is calibrated when the main power switch is turned on.

Purpose: To distribute spray water to the spray arms in accordance with the program specification.Spray AssemblyThe purpose of the spray assembly is to direct pressured water at the dish surfaces from various angles. Water pressure driven by the cycle pump flows into the cleaning chamber through one stationary sprayer, and three rotating arms on the bottom, middle and top of the chamber. Input water pressure passes into the inside of the hollow plastic arms rested on pivots. The pivots consist of hollow cylinders which limit the arms to radial motion and allow water into the arms. Holes on the surface of the arms direct the pressure difference and water streams in different directions. Ultimately, more force is applied to streams which point to one side of the arm on either side of the central pivot. The force favors opposite arm sides on either side of the pivot, so that the arms are torqued in one rotational direction, the net force opposite to the net direction of the streams. The rotation of these arms cyclically varies the direction of all the streams increasing the span that they cover over the dishes.

Main TubIt provides space for rack utensils and holds other components like sump assembly, tank, air guide assembly, rack support rails, door hinges etc.

Sump assemblyIt does have filters to separate soiled particles and allows water either to recirculate through system or throws out to drain. It holds circulation pump, heater, spray valve and synchronous motor, drain motor.

Flow meter

The flow meter is fitted in the air gap and cannot be replaced separately. It comprises an impeller that is rotated by the flow of water from the inlet valve. The impeller is fitted with two magnets that affect a sensor, a so-called reed switch. This is connected to the control unit via a wire and provides the control unit with information on the amount of water entering the machine. In order for the flow sensor to function normally the incoming water pressure must be at least 2 bar (29 psi). Output signal: 220 pulses per liter (0.26 gallon) of water flowing through.Air gap

The air gap is found next to the cleaning compartment. It comprises channels through which the incoming water flows into the cleaning compartment. These channels also contain an anti-backflow device and the flow sensor through which the water passes. Certain models are equipped with a water pocket that collects water used for the water softener (only machines with a water softener). The air gap also works as a channel of air taken in during the drying phase, as well as a pressure relief for excess air when opening and closing the door. On machines with Turbo Drying Express (TDE) a lid is mounted on the inside of the air gap. If there is condensation in the kitchen interiors, make sure the lid is correctly fitted.

Purpose: To prevent dirty water from the cleaning compartment being sucked back into the water supply, and lead air to and from the container.Drain pump

The drain pump is fitted to the bottom drain and can be replaced from the front of the machine. In the bottom drain, under the filters, is a cleaning plug which when removed enables the customer to clean the pump housing. In the event of a blockage the pump changes its direction of rotation to try to clear the blockage.

Purpose: To drain the water from the cleaning compartment in accordance with the program specification and in case of overflow.

Rack (upper and lower racks)Grill like shelf in which the dishes are arrangedThere are two separate baskets for you to load your dishes into your machine. You can load into the lower basket such round and deep items as pots with long handles, pot lids, plates, salad plates, cutlery sets. The upper basket has been designed for tea plates, dessert plates, salad bowls, cups and glasses. When placing long-stem glasses and goblets, lean them against the basket edge, rack or glass supporter wire and not against other items. Do not lean long glasses against one another or they cannot remain steady and may receive damage. It is more appropriate to locate the thin narrow parts into the middle sections of baskets.Detergent and rinse aid dispenser High-end residential dishwashers have dispensing assemblies mounted in the inside surface of the appliance door. The dispensing assembly dispenses both detergent and rinse agent at appropriate times during a wash cycle. The assembly has two separate compartments or reservoirs, one for each ingredient, with actuator mechanisms to release each agent.Detergent is added to the dispensing assembly with every load of dishes. A spring-loaded door covers the detergent compartment. In an unlatch mode, the door is open. The consumer adds detergent to the compartment prior to the wash cycle. The door is manually closed and is latched automatically by a spring-loaded pawl. A solenoid or wax motor electrically operates the pawl, to unlatch the door at the proper time during the wash cycle. A spring biases the door open to release the detergent for washing.

The rinse agent compartment consists of a reservoir with a filler cap. The consumer removes the filler cap to add rinse agent. Since only a very small amount of rinse agent is used to wash each load of dishes, rinse agent is only added periodically. During a specific wash cycle, rinse agent is emitted from the reservoir through a port that leads to the exterior surface of the dispensing assembly. It is known to open and close the port via a spring-loaded plunger valve. The normal state of the valve is closed. Opening the valve allows rinse agent to flow through the port and into the dishwasher. The valve can be operated by the same solenoid or wax motor that operates the detergent compartment door, or by a different wax motor or solenoid.

The dispensing assembly is controlled by the dishwasher electronic control module or by an electromechanical timer. With the dispenser loaded with detergent and rinse agent and the appliance door secured, the dishwasher cycle of operation begins. As the wash cycle is reached, the solenoid or wax motor is energized, and the spring-loaded pawl moves to its unlatched position. This releases the detergent door, which springs open to introduce the detergent into the dishwasher. As the solenoid or wax motor is de-energized, the spring-loaded pawl returns to its default latched position while the door itself remains open for the duration of the operating cycle.

As the rinse cycle is reached, the solenoid or wax motor is energized a second time, and the spring-loaded plunger valve is opened. Rinse agent is allowed to flow through the port and is introduced into the dishwasher. As the solenoid or wax motor is de-energized, the valve returns to its default closed position and stems the flow of rinse agent.Wax motorA wax motor is an actuator device that converts thermal-to-mechanical energy by exploiting the phase-change behaviour of waxes. During melting wax exhibits a large change in density, typically expanding in volume by 5% to 20% (Freund 1982).

A wide range of waxes can be used in wax motors, ranging from highly-refined hydrocarbons to waxes extracted from vegetable matter. Specific examples include paraffin waxes in the straight-chain n-alkanes series. These melt and solidify at a well-defined and narrow temperature range. Paraffins can be used in wax motors to actuate them across a wide range of operating temperatures.

Heating element

It is usually located in bottom of tub underneath the spray arms. It is used for heating water and drying utensils The heating element is of the flow-through type and is fitted between the bottom drain and the suction connector of the circulation pump. It comprises a pipe with a heating coil. One side of the heating coil is fitted with an overheating cut-out with a trigger temperature of 70C and an automatic reset.

Purpose: To heat the dishwater to the correct temperature during the prewash/main wash and final rinse.Water softener

Certain machines are fitted with a water softener. The water softener is under the cleaning compartment and has a cap for topping up the salt in the bottom of the cleaning compartment. The water softener has two chambers, one for salt and one for ion exchange resin. It also has two electromagnetic valves (a mixer valve and a salt valve) which control the water flow to the salt chamber and through the ion exchange resin. When filling with water, the water flows through the chamber containing the ion exchange resin where the hard water is softened. The mixer valve is used to control whether the incoming water flows through or bypasses the chamber containing ion exchange resin depending on the water hardness setting. The salt valve is used to fill the chamber containing the ion exchange resin with water saturated with salt from the salt chamber when the ion exchange resin needs to be recharged. When the salt valve opens the water pocket in the air gap is emptied, with the water passing through the salt chamber and into the chamber containing the ion exchange resin.1.3 Dishwasher wash mechanismsThere are several processes which work together to clean dishes during the typical wash cycle. The first and most obvious is the mechanical impulse of the jets of water from the spray arms directly impacting the food soil and knocking it off the surface of the dishes.An equally important mechanism is the combined effect of completely saturating the food soil on the dishes with a hot detergent and water solution. The action of the hot water and detergent continually wetting the surface of the dishes eventually raises the temperature of the dishes and food soil to the same temp as the wash water. After sometime the stuck on food soils become saturated, expand, then finally loosens and slide off or become much easier to remove with the mechanical action of the spray jets. It is important to note that the process of wetting dishes and food soil with wash solution and raising the temperature is only loosely dependent on continual direct hits from high pressure jets. Over time wash water that is deflected off other dishes, obstacles or the interior of the dishwasher tub is almost as effective at wetting and heating the food soil as direct hits of wash water from a spray arm jets. The main benefit to wash performance of having high flow rate and pressure (power) from the spray arm jets is in removing the last bits of sticky food soils. Because of this, only having one spray arm in operation at a time does relatively little, if anything, to decrease the overall wash performance of the machine. In practice the wash performance of an alternating arm system and a simultaneous arm system tend to converge fairly rapidly. Therefore a well-designed alternating arm system does not need to operate much, if any, longer than a system which operates both spray arms at the same time.The third key mechanism at work in a dishwasher's wash system is the dilution ratio. Dishwasher wash cycles are divided up into phases of differing lengths, each proceeded with a fresh water fill. During the circulation phase, food soil is removed from the dishes and becomes dissolved or suspended in the wash water. After the wash water has been circulated through the system numerous times the soil ladened water is drained at the end of the phase. At the end of the drainage there is always a small amount of wash water left in the bottom of the sump along with wash water that is coating the interior of the tub and the surface of the dishes. This dirty wash water left in the sump and coating the interior of the dishwasher is called "carryover" water since as the name implies it is carried over into the next wash phase. The dishwasher's dilution ratio is the ratio of carryover water divided by the volume of fresh fill water added at the beginning of each phase raised to the power of the number of wash phases. The higher the dilution ratio the cleaner the wash water will be, and therefore there will be less food soil redeposit on the dishes.

There are several ways to increase the dilution ratio. One is by designing the drainage system to leave as little carryover water in the bottom of the sump as possible. While this is an energy efficient way of increasing the dilution ratio, there is little that can be done about the wash water coating the dishes and the interior of the tub. This tends to set a lower limit on the reduction of carryover water. Another method is to increase the number of fills, unfortunately this method significantly increases water and energy consumption. A third method is to increase the volume of fill water at the beginning of each wash phase. Once again this method is not energy or water efficient.A fourth method is indirect but can be extremely effective. That is filtering the wash water. While technically it does not reduce the dilution ratio as we have defined it, it does remove much more food soil from the machine, earlier in the wash cycle, than can be simply dissolved or suspended in the wash water and then pumped down the drain at the end of each cycle. Filtering the water is an effective and energy efficient way of increasing the wash performance without adding larger or more fills. The difficulty with filtering the wash water is that the filter will tend to become clogged, especially in the early wash phases when the soil load in the water is at its highest. The higher the flow rate of soil ladened wash water drawn through the filter the more difficult it is to keep the filter from becoming clogged. To help keep the filter clean some of the wash water is usually diverted to clean the filter. Unfortunately, the water diverted to cleaning the filter does nothing to clean the dishes and has the counterproductive effect of increasing the total flow through the filter.The wash cycle:

Contrary to popular belief, the whole dishwasher doesn't actually fill with water, only the small basin at the bottom of the unit does. In that basin is a heating unit that heats the water to 130 - 140 degrees Fahrenheit. Then a pump propels the water up into jets, where it is then forced out and sprayed against the dirty dishes. When the wash/ rinse cycle is complete the water drains out of the basin again. This process happens when the pump propels the water out of the dishwasher, and depending on the make and model of your dishwasher the water might go directly into your sink or directly into the pipes under your sink. The final step in this whole process is the optional dry cycle which many people bypass to save energy. The heating unit at the bottom of the dishwasher heats the air inside to dry the dishes. Reversible: these pumps switch between pumping water to the spray arms and pumping water to the drain by reversing the direction of the motor.

Direct Drive: In this pump the motor runs in one direction so the direction of the flow is switched from spray arms to drain by a solenoid that opens and closes the appropriate valves to one hose or another. Types of Dishwasher Wash SystemsThere have been many novel wash systems in dishwashers over the years, but three types have been the most successful and numerous:

Systems utilizing simultaneous spray arm operation.

Systems which alternate the use of spray arms. Single spray arms systems utilizing a spray tower to reach dishes in the upper rack.

Simultaneous Spray Arm SystemsAs the name implies, this type of system operates both spray arms at the same time during the wash cycle. This system consumes the most hydraulic power, and subsequently electrical power, of the three. Usually the circulation pump is mounted

underneath the dishwasher tub with the pump discharge positioned vertically along the centerline of the dishwasher tub. The lower spray arm is located directly under the lower dish rack and atop a relatively short, straight feed tube extending from the pump discharge to the lower spray arm's inlet. In this position the lower spray arm is ideally positioned to give maximum coverage to the lower rack while wash water pumped to the lower spray arm undergoes minimal hydraulic loss.

Wash water is supplied to the upper spray arm by a feed tube system that branches off of the wash pump's discharge. This type of system is relatively simple because no valve or control system is required to switch water flow from the upper to the lower spray arm. But this type of system consumes the most hydraulic power of the three and therefore requires the most powerful

motor, which in turn consumes the most electrical energy over the length of the wash cycle. Also because of the relatively high flow rate it is more difficult to keep the filter from becoming clogged during the earlier phases of the wash cycle. At first glance it may seem that an advantage of this type of system is the potential for shorter wash cycles when compared to an alternating arm system, but in practice there is not nearly enough of a reduction in cycle time to offset the increase in power and energy usage.

Alternating Spray Arm SystemThe alternating spray arm system is very similar to the simultaneous spray arm system except that there is some means, usually an electrically actuated valve near the pump's discharge, to switch the flow of wash water from the lower spray arm to the upper spray arm.

This type of system has several advantages. One is that it consumes much less power than the other system types. The result is the power multiplied by the cycle time results in a significant reduction in energy consumed. Another major advantage of this type of system is that the wash filter only needs to handle half the flow rate of a simultaneous arm or tower system, making it much easier to keep the filter from clogging. And finally, both two spray arm systems have the advantage of offering better coverage to the upper rack without forcefully spaying water against the inner door or sides of the dishwasher tub. This provides advantages for noise, wash performance and a reduced tendency for the door gasket to leak.

Single Spray Arm and Tower SystemThe tower system uses a lower spray arm much like the first two systems except it has no upper spray arm or feed system for the upper spray arm. In order to clean the dishes in the upper rack it utilizes a spray tower mounted to the center of the lower spray arm with spray nozzles aimed at the upper rack. When the lower spray arm rotates so does the tower. The advantage of a tower system is simplicity and lower cost. The disadvantages are increased noise from the spray hitting the dishwasher tub and inner doors at a more direct angle, reduced lower rack capacity, reduced wash performance from relatively poor coverage of the upper rack, high power consumption and a relatively high flow rate which makes it more difficult to keep a filter clean. Hydraulically, tower systems are a special case of the lower spray arm mode in an alternating system. Tower systems were once very popular but now play a decreasing role in new dishwasher design.Dishwasher Loading:

Loading the lower rack:Load cookware (pots, pans, etc.), up to 14 in. (36 cm) in diameter into the lower rack. The lower rack has been especially designed for dinner dishes, soup bowls, plates, pots, lids, casserole dishes and plates. Load your plates into the center column of the rack so their open sides face towards the right. Load large items such as pans and pots into the dishwasher so their open sides face downwards. We recommend loading cups, stemware and small plates into the upper rack.

See the recommended loading patterns below.

Loading the upper rack:The upper rack has been designed for small plates, mugs, glasses and plastic items marked "dishwasher Safe". Load your plates into the dishwasher so their open sides face forward. If a number of cups or Cookware items need to be washed, you can adjust the angle of the movable tines or remove them to make more room.

Make sure the loaded dishes do not interfere with the rotation of the nozzle which is located at the bottom of the upper rack. (Check this by rotating the nozzle by hand.)

The Dishwasher energy efficiency labelWhen it comes to cleanliness and hygiene, many people still operate under the mistaken notion that the more you use, the better the results all too often to the detriment of the environment

Today, however, the technologies being developed for dishwashers are becoming more and more sustainable, significantly reducing their water and energy consumption and allowing you to concentrate on what you most enjoy about your kitchen: delicious cooking. By familiarizing yourself with and understanding the new energy label youll be able to discover which are the most energy efficient appliances for you to consider.

1.4 Test methods for ENERGY STAR commercial dishwasher Sanitizing and Post-Sanitizing Rinse Water Consumption1. Fresh Water Sanitizing or Post-Sanitizing Rinse Stationary Rack Type Machinesa. Completely dry and weigh the capture vessel.

b. Operate the machine through three cycles. Verify that the wash, rinse (including post-sanitizing rinse if this feature is included), and dwell times are within 1 second of the manufacturers specified values and that the water pressure is within 1 psig of the manufacturers specified value. If they are not, make adjustments and operate the machine through additional cycles until they are (i.e. steady state is achieved). If the specified times are not reached, terminate testing.

c. Using the weighed capture vessel, catch all water that is sent to the drain during a complete cycle, including any water from a post-sanitizing rinse if the water consumption including post-sanitizing rinse is being measured. Record the exact wash, rinse, and dwell times. It may take longer than the duration of the cycle for all of the water to drain; thus the vessel shall remain in place until the water flow from the cycle ceases.d. Weigh the filled vessel after the cycle, subtracting the weight of the capture vessel to calculate the weight of the water.e. Repeat steps a) through d) five times. Completely dry the vessel after each cycle.

2. Pumped Water Sanitizing or Post-Sanitizing Rinse Stationary Rack Type Machinesa. Completely dry and weigh the capture vessel.

b. Operate the machine through three cycles. Verify that the wash, rinse, and dwell times are within one second of the manufacturers specified values and that the water is within 0.25 inch (in.) of the water fill line. If it is not, adjust the water pressure until the water is within 0.25 in. of the water fill line. If the water is still not within 0.25 in. of the water fill line, the wash, rinse, and dwell times may be adjusted, but the new times shall be recorded. If the specified times and/or water fill level are not reached, terminate testing

c. Using the weighed capture vessel, catch all water that is sent to the drain during a complete cycle, including any water from a post-sanitizing rinse if the water consumption including post-sanitizing rinse is being measured. Record the exact wash, rinse, and dwell times. It may take longer than the duration of the cycle for all of the water to drain; thus the vessel shall remain in place until the water flow from the cycle ceases.d. Weigh the filled vessel after the cycle, subtracting the weight of the capture vessel to calculate the weight of the water.e. Repeat steps a) through d) five times. Completely dry the vessel after each cycle.3. Fresh Water Sanitizing or Post-Sanitizing Rinse Conveyor Type Machinesa. Activate the sanitizing rinse solenoid (and the post-sanitizing rinse solenoid if the water consumption including post-sanitizing rinse is being measured) for 5 minutes (min). Do not activate any other component(s) of the Dishwasher that sends water to the drain. If there is a lever that actuates the sanitizing rinse solenoid or post-sanitizing rinse solenoid, the lever may be held down to simulate operation. Verify that the water pressure is within 1 psig of the manufacturers specified value. If it is not, make adjustments and operate the machine until it is (i.e. steady state is achieved).b. Using a flow meter, measure all water that is sent to the drain during 1 min +/-1 second of continuous operation of the sanitizing rinse solenoid (and post-sanitizing rinse solenoid if the water consumption including post-sanitizing rinse is being measured). Record the exact time. Do not activate any other component(s) of the Dishwasher that sends water to the drain. If there is a lever that actuates the sanitizing rinse solenoid or post-sanitizing rinse solenoid, the lever may be held down to simulate operation.c. Repeat steps a) and b) five times.4. Pumped Water Sanitizing or Post-Sanitizing Rinse Conveyor Type Machines

a. Activate the sanitizing rinse (and the post-sanitizing rinse if the water consumption including post-sanitizing rinse is being measured) for 5 min. Do not activate any other component(s) of the Dishwasher that sends water to the drain. If there is a lever that actuates the sanitizing rinse or post-sanitizing rinse, the lever may be held down to simulate operation. Verify that the pumped sanitizing rinse and post-sanitizing rinse operate correctly. If they do not, terminate testing.b. Using a flow meter, measure all water that is sent to the drain during 1 min +/-1 second of continuous operation of the sanitizing rinse (and post-sanitizing rinse if the water consumption including post-sanitizing rinse is being measured). Record the exact time. Do not activate any other component(s) of the Dishwasher that sends water to the drain. If there is a lever that actuates the sanitizing rinse or post-sanitizing rinse, the lever may be held down to simulate operation.c. Repeat steps a) and b) five times. Idle Energy Consumption for Stationary Rack Type Machines1. General measurements shall be taken and recorded as specified in ASTM F1696-07; Section10.1 with the following revisions and additions.a. Steam coil units shall also be included in Section 10.1.1

b. Section 10.1.1.2 shall be disregarded.c. The higher heating value shall be measured for all tests with a gas powered tank heater or booster. The other measurements specified in Section 10.1.2 shall only be taken if the gas meter does not already correct the gas volume based on temperature and pressure. Section 10.1.2.6 shall be disregarded.d. Section 10.1.4 shall be replaced with For Dishwashers that use steam coils for tank or booster heat, the steam temperature, pressure, and volumetric flow rate at Dishwasher inlet, water temperature and pressure at Dishwasher outlet, and barometric pressure shall be recorded at no greater than 1 second of every test. Make any necessary corrections to the measurements as required by the instruments (i.e. correction for elevation of pressure gauge above pressure line, etc.).e. Section 10.1.5 shall be disregarded.2. For Dishwashers with steam coil tank or booster heat, allow the Dishwasher tank or booster heater to idle for one on cycle, with the exterior service door(s) closed. As the tank or booster heater cycles on for the second time, record the amount of time between steam entering the volumetric flow meter and exiting as condensate with a stopwatch as tdelay (seconds). This time delay is used to compare the data from the inlet to the corresponding data from the outlet. Adjust testing times so that there is enough data to account for this delay. Alternately, if the time delay cannot be determined using this method, it may be estimated by dividing the volume of the heat exchanger by the average flow during the first complete heater on cycle.3. If there is a booster heater for high temperature machines, the booster temperature shall be calibrated as follows:a. For external booster heaters, while monitoring the water inlet of the booster heater or water source and Dishwasher (rinse manifold) temperature, initiate a Dishwasher cycle. Adjust the booster heater or water source to the manufacturer's recommended sanitizing rinse temperature +/- 2 F, if user adjustable. If the manufacturer does not have a recommended external booster heater setting, then set the booster heater thermostat such that the average temperature of water at the Dishwasher manifold (measured only during the rinse) is between 180 F and 195 F. If the machine is supplied with an internal booster heater, retain the factory setting of the thermostat.b. Run two machine cycles with an empty dish rack placed in the machine to confirm that the stabilized flowing sanitizing rinse temperature is above the manufacturers rated sanitizing rinse temperature minus 1 F (or above 180 F if the manufacturer does not provide a rated rinse temperature). If the stabilized flowing sanitizing rinse temperature is below the manufacturers nameplate rated sanitizing rinse temperature minus 1 F (or below 180 F if the manufacturer does not provide a rated sanitizing rinse temperature), adjust the thermostat per the manufacturers instructions if it is user adjustable.4. The wash tank temperature shall be set as specified in ASTM F1920-11; Section 10.6 with the following revisions and additions.a. Dishwater shall be replaced with Dishwasher. Verify that the minimum tank heater temperature during the three consecutive heater cycles is above the manufacturers recommended setting minus 1 F and the maximum temperature is not more than 15 F higher than the minimum measured temperature. Repeat for all actively heated tanks.b. Run two machine cycles with an empty dish rack placed in the machine to confirm that the minimum tank temperature(s) during the test is above the manufacturers recommended setting minus 1 F and the maximum temperature is not more than 15 F higher than the minimum measured temperature If the tank temperature(s) is not correct, adjust the thermostat per the manufacturers instructions if it is user adjustable.5. The tank heater maximum energy input rate (i.e. maximum power) shall be measured and reported as specified in ASTM F1696-07; Section 10.2 with the following revisions and additions.a. The maximum energy input rate determination is used to verify that the dishwasher is operating within manufacturer specifications. If there is a nameplate rating or a rating printed on the heating element for the tank heater, follow the steps below. If the tank heater is included as part of a total power consumption nameplate rating, follow the steps below while monitoring the total power consumption for all components included in the rating.b. Section 10.2.1 shall be disregarded.c. Section 10.2.2 shall be replaced with the following:i. Instruments shall be connected so that only the energy (for steam and gas tank heat) or power (for electric tank heat) consumption of the tank heater is measured. Fill the Dishwasher tank with water.ii. For electric tank heaters, commence monitoring the power of the tank heater when the tank heater cycles on. Stop monitoring the power when the tank heater cycles off. Record the maximum power value as the maximum energy input rate.

iii. For gas tank heaters, allow the tank heater to idle for one on cycle to allow the burner orifices to heat up. Commence monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles on for the second time. Stop monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles off. Record the time and energy consumption of the tank heater during the complete on cycle.iv. For steam coil tank heaters, commence monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles on. Stop monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles off. Record the time and energy consumption of the tank heater during the complete on cycle.

d. Section 10.2.3 shall be followed as written with the following revision.i. The tank heater maximum energy input rate (i.e. maximum power) for the Dishwasher under test shall be determined in accordance with Section 7.6 of this test method.ii. If the difference between the recorded value and the nameplate rating or rating printed on the heating element is greater than 5%, testing shall be terminated.

e. For machines with steam coil tank heat, using an appropriately sized vessel that is completely dry, catch all water from the outlet during the test. Weigh the filled vessel, subtracting the weight of the capture vessel to calculate the weight of the water. Calculate the total mass of the inlet steam during the test and confirm that it is within 5% of the mass of water measured from the outlet stream. If the difference is greater than 5%, adjust the quality of the steam until the difference is less than 5% and rerun the tank heater maximum energy input rate (i.e. maximum power) test.6. If there is a booster heater, the booster heater maximum energy input rate shall be measured and reported as specified in ASTM F1696-07; Section 10.3 with the following revisions and additions.a. If there is a nameplate rating or a rating printed on the heating element for the booster heater, follow the steps below. If the booster heater is included as part of a total power consumption nameplate rating, follow the steps below while monitoring the total power consumption for all components included in the rating.b. Section 10.3.1 shall be replaced with the following:i. Instruments shall be connected so that only the energy (for gas or steam booster heat) or power (for electric booster heat) consumption of the booster heater is measured. Fill the booster heater with water.ii. For electric booster heaters, commence monitoring the power of the booster heater when the booster heater cycles on. Stop monitoring the power when the booster heater cycles off. Record the maximum power value as the maximum energy input rate.

iii. For gas booster heaters, allow the tank heater to idle for one on cycle to allow the burner orifices to heat up. Commence monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles on for the second time. Stop monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles off. Record the time and energy consumption of the booster heater during the complete on cycle.iv. For steam coil booster heaters, commence monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles on. Stop monitoring the elapsed time and energy consumption of the booster heater when the tank heater cycles off. Record the time and energy consumption of the booster heater during the complete on cycle.c. Section 10.3.2 shall be followed as written with the following revision.i. The booster heater maximum energy input rate (i.e. maximum power) for the Dishwasher under test shall be determined in accordance with Section 7.6 of this test method.ii. If the difference between the recorded value and the nameplate rating or rating printed on the heating element is greater than 5%, testing shall be terminated.d. For machines with steam coil booster heat, using an appropriately sized vessel that is completely dry, catch all water from the outlet during the test. Weigh the filled vessel, subtracting the weight of the capture vessel to calculate the weight of the water. Calculate the total mass of the inlet steam during the test and confirm that it is within 5% of the mass of water measured from the outlet stream. If the difference is greater than 5%, adjust the quality of the steam until the difference is less than 5% and rerun the booster heater maximum energy input rate (i.e. maximum power) test.7. The idle energy rate (i.e. power) shall be measured as follows:a. If the Dishwasher does not have an internal booster heater:i. Allow the Dishwasher to fill and energize the tank heater.ii. With the door(s) closed, allow the Dishwasher tank to idle for at least 1 hour for stabilization. Commence monitoring elapsed time, tank temperature, and total energy consumption of the Dishwasher when the tank heater on cycles for the first time after the 1 hour stabilization period.iii. Allow the Dishwasher to idle for 3 hours. If there have not been ten distinct heater cycles during the 3 hour period, continue to run the test and record data. Stop the test the tenth time that the heater cycles off. Record the final elapsed time and energy consumption of the Dishwasher.

iv. Record the minimum tank temperature during the test and confirm that it is at or above the manufacturers specified minimum tank temperature minus 1 F, as applicable. If the minimum tank temperature during the idle energy test is below the manufacturers specified tank temperature minus 1 F, the test is invalid and must be repeated. If the tank temperature exceeds 15 F of the measured minimum tank temperature, the test is invalid and must be repeated. Adjust the thermostat per the manufacturers instructions if it is user adjustable and repeat the steps in i through iii.b. If the Dishwasher has an internal booster heater:i. Allow the Dishwasher to fill and energize the tank heater and booster heater.ii. With the door(s) closed, allow the Dishwasher tank and booster heater to idle for at least 1 hour for stabilization. Commence monitoring elapsed time, tank temperature, and total energy consumption of the Dishwasher when the tank heater cycles on for the first time after the 1 hour stabilization period.iii. Allow the Dishwasher to idle for 3 hours. If there have not been ten distinct heater cycles during the 3 hour period, continue to run the test and record data. Stop the test the tenth time that the heater cycles off. Record the final elapsed time and energy consumption of the Dishwasher.iv. The booster idle energy consumption shall be reported separately from the total idle energy consumption. If possible, sub-monitor the idle energy consumption of the booster heater during the Dishwasher idle energy test described in steps i through iii above. If the booster heater idle energy cannot be simultaneously measured with the Dishwasher idle energy, the booster heater idle energy may be monitored at a different time; however, the number of booster heater on cycles in the separate test must be equivalent to the number of booster heater on cycles in the Dishwasher idle energy. Repeat steps i through iii above, but record the energy consumption of the booster heater instead of the total Dishwasher energy consumption. If the booster heater cannot be separately monitored or sub-monitored, the booster heater idle energy consumption shall be included as part of the total idle energy consumption.v. Record the minimum tank temperature during the test(s) and confirm that it is at or above the manufacturers specified minimum tank temperature minus 1 F, as applicable. If the minimum tank temperature during the idle energy test is below the manufacturers specified tank temperature minus 1 F, then the test is invalid and must be repeated. If the tank temperature exceeds 15 F of the measured minimum tank temperature, the test is invalid and must be repeated. Adjust the thermostat per the manufacturers instructions if it is user adjustable and repeat the steps in i through iv. Idle Energy Consumption for Conveyor Type Machines1. General measurements shall be taken and recorded as specified in ASTM F1920-11; Section 10.1 with the following revisions and additions.a. Steam coil units shall also be included in Section 10.1.1

b. Section 10.1.1.2 shall be disregarded.c. The higher heating value shall be measured for all tests with a gas powered tank heater or booster. The other measurements specified in Section 10.1.2 shall only be taken if the gas meter does not already correct the gas volume based on temperature and pressure. Section 10.1.2.6 shall be disregarded.d. Section 10.1.4 shall be replaced with For Dishwashers that use steam coils for tank or booster heat, the steam temperature, pressure, and volumetric flow rate at Dishwasher inlet, water temperature and pressure at Dishwasher outlet, and barometric pressure shall be recorded at no greater than 1 second of every test. Make any necessary corrections to the measurements as required by the instruments (i.e. correction for elevation of pressure gauge above pressure line, etc.).e. Section 10.1.5 shall be disregarded.2. For Dishwashers with steam coil tank or booster heat, with the exterior service door(s) closed, allow the Dishwasher tank or booster to idle for one on cycle. As the tank or booster heater cycles on for the second time, record the amount of time between steam entering the volumetric flow meter and exiting as condensate with a stopwatch as tdelay(seconds). This time delay is used to compare the data from the inlet to the corresponding data from the outlet. Adjust testing times so that there is enough data to account for this delay. Alternately, if the time delay cannot be determined using this method, it may be estimated by dividing the volume of the heat exchanger by the average flow during the first complete heater on cycle.3. If there is a booster heater for high temperature machines, the booster temperature shall be calibrated as follows:a. For external booster heaters, while monitoring the water inlet of the booster heater or water source and Dishwasher (rinse manifold) temperature, initiate a Dishwasher cycle. Adjust the booster heater or water source to the manufacturer's recommended sanitizing rinse temperature +/- 2 F, if user adjustable. If the manufacturer does not have a recommended external booster heater setting, then set the booster heater thermostat such that the average temperature of water at the Dishwasher manifold (measured only during the rinse) is between 180 F and 195 F. If the machine is supplied with an internal booster heater, retain the factory setting of the thermostat.b. Run two empty dish racks through the machine to confirm that the stabilized flowing sanitizing rinse temperature is above the manufacturers rated sanitizing rinse temperature minus 1 F (or above 180 F if the manufacturer does not provide a rated sanitizing rinse temperature). If the stabilized flowing sanitizing rinse temperature is below the manufacturers nameplate rated sanitizing rinse temperature minus 1 F (or below 180 F if the manufacturer does not provide a rated rinse temperature), adjust the thermostat per the manufacturers instructions if it is user adjustable.4. The tank temperature(s) shall be calibrated as specified in ASTM F1920-11; Section 10.6 with the following revisions and additions.a. Dishwater should be replaced with Dishwasher. Verify that the minimum tank heater temperature during the three consecutive heater cycles is above the manufacturers recommended setting minus 1 F and the maximum temperature is not more than 15 F higher than the measured minimum temperature. Repeat for all actively heated tanks.b. Run two empty dish racks through the machine to confirm that the minimum tank temperature(s) during the test is above the manufacturers recommended setting minus 1 F and the maximum temperature is not more than 15 F higher than the measured minimum temperature If the tank temperature(s) is not correct, adjust the thermostat per the manufacturers instructions if it is user adjustable.5. The wash tank pump and conveyor motor shall be calibrated as specified in ASTM F1920-11; Section 10.7 with the following revision.a. Section 10.7.1 is applicable to all pumps (not just the wash pump).6. The tank heater maximum energy input rate (i.e. maximum power) shall be measured and reported as specified in ASTM F1920-11; Section 10.2 with the following revisions and additions.a. The maximum energy input rate determination is used to verify that the dishwasher is operating within manufacturer specifications. If there is a nameplate rating or a rating printed on the heating element for the tank heater(s), follow the steps below. If the tank heater(s) are included as part of a total power consumption nameplate rating, follow the steps below while monitoring the total power consumption for all components included in the rating.b. Section 10.2.1 shall be replaced with the following:i. Instruments shall be connected so that only the energy (for steam and gas tank heat) or power (for electric tank heat) consumption of the tank heater(s) is measured. Fill the Dishwasher tank with water.ii. For electric tank heaters, commence monitoring the power of the tank heater when the tank heater cycles on. Stop monitoring the power when the tank heater cycles off. Record the maximum power value as the maximum energy input rate.iii. For gas tank heaters, allow the tank heater to idle for one on cycle to allow the burner orifices to heat up. Commence monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles on for the second time. Stop monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles off. Record the time and energy consumption of the tank heater during the complete on cycle.iv. For steam coil tank heaters, commence monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles on. Stop monitoring the elapsed time and energy consumption of the tank heater when the tank heater cycles off. Record the time and energy consumption of the tank heater during the complete on cycle.c. Section 10.2.2 shall be followed as written with the following revision.i. The tank heater maximum energy input rate (i.e. maximum power) for the Dishwasher under test shall be determined in accordance with Section 7.6 of this test method.

ii. If the difference between the recorded value and the nameplate rating or rating printed on the heating element is greater than 5%, testing shall be terminated.d. For machines with steam coil tank heat, using an appropriately sized vessel that is completely dry, catch all water from the outlet during the test. Weigh the filled vessel, subtracting the weight of the capture vessel to calculate the weight of the water. Calculate the total mass of the inlet steam during the test and confirm that it is within 5% of the mass of water measured from the outlet stream. If the difference is greater than 5%, adjust the quality of the steam until the difference is less than 5% and rerun the tank heater maximum energy input rate (i.e. maximum power) test.7. If there is a booster heater, the booster heater maximum energy input rate shall be measured and reported as specified in ASTM F1920-11; Section 10.3 with the following revisions and additions.a. If there is a nameplate rating or a rating printed on the heating element for the booster heater, follow the steps below. If the booster heater is included as part of a total power consumption rating, follow the steps below while monitoring the total power consumption for all components included in the rating.b. Section 10.3.1 shall be replaced with the following:i. Instruments shall be connected so that only the energy (for gas or steam booster heat) or power (for electric booster heat) consumption of the booster heater is measured. Fill the booster heater with water.ii. For electric booster heaters, commence monitoring the power of the booster heater when the booster heater cycles on. Stop monitoring the power when the booster heater cycles off. Record the maximum power value as the maximum energy input rate.iii. For gas booster heaters, allow the tank heater to idle for one on cycle to allow the burner orifices to heat up. Commence monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles on for the second time. Stop monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles off. Record the time and energy consumption of the booster heater during the complete on cycle.iv. For steam coil booster heaters, commence monitoring the elapsed time and energy consumption of the booster heater when the booster heater cycles on. Stop monitoring the elapsed time and energy consumption of the booster heater when the tank heater cycles off. Record the time and energy consumption of the booster heater during the complete on cycle.c. Section 10.3.2 shall be followed as written with the following revision.i. The booster heater maximum energy input rate (i.e. maximum power) for the Dishwasher under test shall be determined in accordance with Section 7.6 of this test method.ii. If the difference between the recorded value and the nameplate rating or rating printed on the heating element is greater than 5%, testing shall be terminated.d. For machines with steam coil booster heat, using an appropriately sized vessel that is completely dry, catch all water from the outlet during the test. Weigh the filled vessel, subtracting the weight of the capture vessel to calculate the weight of the water. Calculate the total mass of the inlet steam during the test and confirm that it is within 5% of the mass of water measured from the outlet stream. If the difference is greater than 5%, adjust the quality of the steam until the difference is less than 5% and rerun the booster heater maximum energy input rate (i.e. maximum power) test.8. The idle energy rate (i.e. power) shall be measured as follows:a. If the Dishwasher does not have an internal booster heater:i. Allow the Dishwasher to fill and energize the tank heater(s).ii. For single tank machines, with the exterior service door(s) closed, allow the Dishwasher tank to idle for at least 1 hour for stabilization. Commence monitoring elapsed time, tank temperature, and total energy consumption of the Dishwasher when the tank heater on cycles for the first time after the 1 hour stabilization period.iii. For multiple tank machines, with the exterior service door(s) closed, allow the Dishwasher tanks to idle for at least 1 hour for stabilization. Commence monitoring the elapsed time and total energy consumption of the Dishwasher and the temperature of all the tanks when one of the tank heaters on cycles again after the 1 hour stabilization period.

iv. Allow the Dishwasher to idle for 3 hours. If there have not been ten distinct tank heater cycles for all tank heaters during the 3 hour period, continue to run the test and record data. Stop the test when one of the tank heaters cycles off again after all tank heaters have on cycled ten times. Record the final elapsed time and energy consumption of the Dishwasher.

v. Record each tanks minimum tank temperature during the test and confirm that it is at or above the manufacturers specified minimum tank temperature(s) minus 1 F, as applicable. If the minimum tank temperature(s) during the idle energy test was below the manufacturers specified tank temperature(s) minus 1 F, the test is invalid and must be repeated. If the tank temperature(s) exceeds 15 F of the measured minimum tank temperature(s), the test is invalid and must be repeated. Adjust the thermostat per the manufacturers instructions if it is user adjustable and repeat the steps in i through iv.b. If the Dishwasher has an internal booster heater: i. Allow the Dishwasher to fill and energize the tank heater(s).ii. For single tank machines, with the exterior service door(s) closed, allow the Dishwasher tank to idle for at least 1 hour for stabilization. Commence monitoring elapsed time, tank temperature, and total energy consumption of the Dishwasher when the tank heater cycles on for the first time after the 1 hour stabilization period.iii. For multiple tank machines, with the exterior service door(s) closed, allow the Dishwasher tanks to idle for at least 1 hour for stabilization. Commence monitoring the elapsed time and total energy consumption of the Dishwasher and the temperature of all the tanks when one of the tank heaters on cycles again after the 1 hour stabilization period.

iv. Allow the Dishwasher to idle for 3 hours. If there have not been ten distinct tank heater cycles for all tank heaters during the 3 hour period, continue to run the test and record data. Stop the test when one of the tank heaters cycles off again after all tank heaters have on cycled ten times. Record the final elapsed time and energy consumption of the Dishwasher.

v. The booster idle energy rate shall be reported separately from the total idle energy rate. If possible, sub-monitor the idle energy rate of the booster heater during the Dishwasher idle energy test described in steps i through iv above. If the booster heater idle energy cannot be simultaneously measured with the Dishwasher idle energy, the booster heater idle energy may be monitored at a different time; however, the number of booster heater on cycles in the separate test must be equivalent to the number of booster heater on cycles in the Dishwasher idle energy test. Repeat steps i through iv above, but record the energy consumption of the booster heater instead of the total Dishwasher energy consumption. If the booster heater cannot be separately monitored or sub-monitored, the booster heater idle energy shall be included as part of the total idle energy.vi. Record each tanks minimum tank temperature during the test(s) and confirm that it is at or above the manufacturers specified minimum tank temperature(s) minus 1 F, as applicable. If the minimum tank temperature(s) during the idle energy test is below the manufacturers specified tank temperature(s) minus 1 F, then the test is invalid and must be repeated. If the tank temperature(s) exceeds 15 F of the measured minimum tank temperature(s), the test is invalid and must be repeated. Adjust the thermostat per the manufacturers instructions if it is user adjustable and repeat the steps in i through v.1.5 Calculations for ENERGY STAR commercial dishwasher

Racks per hoursa. Fresh Water or Pumped Water Sanitizing or Post-Sanitizing Rinse Stationary Type Machines b. Fresh Water or Pumped Water Sanitizing or Post-Sanitizing Rinse Conveyor Type (excluding Flight Type) Machines

Sanitizing and Post-Sanitizing Rinse Water Consumption (Gallons per Hour, GPH)a. Fresh Water or Pumped Water Sanitizing or Post-Sanitizing Rinse Stationary Type Machines

b. Fresh Water or Pumped Water Sanitizing or Post-Sanitizing Rinse Conveyor Type (including Flight Type) Machines

Sanitizing and Post-Sanitizing Rinse Water Consumptiona. Fresh Water or Pumped Water Sanitizing or Post-Sanitizing Rinse Stationary Rack Type Machines

b. Fresh Water or Pumped Water Sanitizing and Post-Sanitizing Rinse Conveyor Type (excluding Flight Type) Machines

c. Pot, Pan, and Utensil Type Machines

Gas Energy Consumptiona. The gas energy consumption rate shall be calculated as specified in ASTM F1920-11; Section 11.3 with the following revision.Equation (2) shall only be used to calculate V if the gas meter does not already correct the gas volume based on temperature and pressure using the same standard values for temperature and pressure that were used to calculate the higher heating value in ASTM F1920-11; Section 10.1.2. Steam Coil Energy Consumptiona. Inlet Steam Mass Flow RateFind the measured pressure and temperature values for the inlet stream for each data point in the superheated or saturated steam tables (depending on the state of the steam) and record the listed density. If the exact pressure and temperature are not listed in the table, interpolate between the two closest pressure and temperature values to calculate the density.

Calculate the mass flow rate for each data point as follows:

b. Inlet Steam Total Mass

c. Inlet Stream EnthalpyFind the measured pressure and temperature values for the inlet steam for each data point in the superheated or saturated steam tables (depending on the state of the steam) and record the listed enthalpy (HInlet). If the exact pressure and temperature are not listed in the table, interpolate between the two closest pressure and temperature values to calculate the enthalpy.d. Outlet Water EnthalpyFind the pressure value for the outlet water for each data point in the saturated steam tables. Record the listed saturated liquid enthalpy value (Hsaturated) and saturated temperature value (Tsaturated). If the exact pressure is not listed in the table, interpolate between the two closest pressure values to calculate the enthalpy.Calculate the enthalpy of the outlet water for each data point as follows:

e. Instantaneous Energy Consumption

Calculate the energy for each data point as follows:

f. Total Energy Consumption

Booster and Tank Heater Maximum Power a. The idle energy input rate (i.e. maximum power) shall be calculated as specified in ASTM F192011; Section 11.4 if a direct measurement of power was not taken. The value 60 provided in the equation is a conversion factor from minute to hours.

This calculation shall also be used for steam. Idle Energy Rate (Power)a. The idle energy rate (i.e. power) shall be calculated as specified in ASTM F1920-11; Section 11.5 with the following clarification, and additions. The value 60 provided in the equation is a conversion factor from minute to hours. This calculation shall also be used for steam. If the idle energy rate (i.e. power) is reported in Btu/h, convert it to kilowatts (kW) based on the following equation: Internal Booster Heater Idle Energy Rate (Power)a. The booster heater idle energy rate (i.e. power) shall be calculated using the same equation as specified in ASTM F1920-11; Section 11.5 for the tank heater idle energy rate with the following clarification and addition. The value 60 provided in the equation is a conversion factor from minute to hours. This calculation shall also be used for steam. If the internal booster heater idle energy rate (i.e. power) is reported in Btu/h, convert it to kW based on the following equation:

1.6 Mechanical dishwashing standards

These Standards are to be used in conjunction with Part 2, Section 28(2) of the Food Regulation (AR 31/2006) made pursuant to the Alberta Public Health Act. These have been developed to establish minimum requirements for mechanical dishwashers and for manual dishwashing procedures.The following will be considered in determining the suitability/operation of the mechanical dishwashing equipment. 1. Equipment must be maintained in proper operating condition at all times. Check the data plate on the machine and check to assure that the following conditions exist: The scrap trays are clear of soil.

Dishes are properly pre-scraped and racked.

On conveyor type machines, curtains are intact and in proper position.

Tank interior is clear of buildup of lime, food spills, etc.

Wash and rinse nozzles are clear of obstructions.

Wash and rinse thermometers are operating properly.

Flow and pressure meter are functioning properly. 2. Mechanical dishwashers must conform to the applicable temperatures and/or chemical concentrations listed as follows:

High Temperature MachinesWhen checking temperatures consider these factors:a. There is close adherence to the manufacturers specifications.

b. Heat accumulation on the dishes over a period of time, and not merely a single temperature, achieves proper sanitation. Therefore, both the wash and final rinse must be operating at the proper temperatures.

Dishwashers including stationary rack, dual temperature, and single tank conveyor, dual temperature, and multi-tank, conveyor, multi-temperature machines require a minimum wash temperature of 60 C.

Dishwashers require a minimum final rinse cycle of 10 seconds duration with a rinse temperature measured at the manifold of at least 82 C.

c. Unless the machine has been used just prior to testing, it should run through at least two complete cycles before temperature readings are taken. d. Maximum-registering thermometers and thermo-labels may be used to confirm the effectiveness of heat sanitation. For high temperature machines, a reading of greater than 71 C at the dish level, measured using a maximum holding thermometer, is an indication of satisfactory sanitation. Low Temperature / Chemical MachinesDishwashers using chemical sanitizers require the following:

a chlorine solution of 100 ppm chlorine at a temperature of 13 C or warmer; or

an iodine solution of 12.5 ppm to 25 ppm at a temperature greater than 24 C but less than 45 C; or

a quaternary ammonium solution of at least 200 ppm at a temperature greater than 24 C; and Chemical testing equipment (test paper) to confirm these concentrations.

Residential MachinesResidential dishwasher must be NSF approved and conform to the conditions / procedures listed below: This category of dishwasher is only suitable for use in bed and breakfasts, child care institutions, and other food establishments subject to the opinion of the Executive Officer.

The dishwasher must be operated on the sani or extended cycle so that 3600 Heat Unit Equivalents are achieved.

Under no circumstances are dishwares or utensils to be removed for use prior to the completion of the wash, rinse and drying cycles.

The dishwasher must be equipped with a device (gauge or light) that indicates the successful completion of the sanitizing cycle.

1.7 Types of Programs in Dishwasher 1.8 Exploded view of dishwasher Sub-assemblies

Door assemblyNo.Part DescriptionNo.Part Description

3Screw20Door outer

4Screw26Screw

5Screw40Plate

7Liner41Handle

8Bracket46Support

9Dispenser47Moisture

10Clip48Reinforcement

11Screw49Gasket

11AScrew50Nameplate

12Latch51Clamp

13Foam53Screw

14Foam

Upper frame / Tub assembly Part DescriptionNo.Part Description

1Top frame14corner LHTrim

2door latch14Acorner RHTrim

3tub gasket15hinge arm cover

4cabinet mtg clip15Ahinge arm cover

4*cabinet clip screw17hinge arm bushing

5Roller Assembly22Washer

6tub roller screw23cabinet mtg Clip

7Outer plate retainer23Acabinet mtg Clip

8VentAssembly25tub flood Float

8*Veny cover connector26float switch Nut

9vent assy27float switch Gasket

10wiring harness Clip 28float switch

11lobe Screw29float switch Actuator

11AScrew,30float switch Bracket

12Hinge Leg31float bracket Shield

12AHinge Leg32float switch Washer

13cabinet bracket clip50wiring Clamp

13Acabinet bracket clip73lobe Screw

Motor, pump and circulation assembly

No.Part DescriptionNo.Part Description

1pan head Screw50Hose sump to motor

6lobe Screw51Sump to hose drain

7lobe Screw52Drain pump to hose

9Screw53Sump to inline

10lower spray arm Support54Hose to inline heater

11truss Screw55motor mounting Plate

12drain Intermediate Hose58ball Check

13drain mainHose60drain Pumpw/bracket Assembly

14Check drain valve assembly62vertical Filter w/flapper Assembly

20vibration 3Grommet62Adrain check Flapper

21vibration 2Grommet63delivery tube Cover

22Washer64 Fine filter soil Assembly

24Lower spray arm assembly65Coarse filter soil Assembly

24AMiddle spray arm assembly66glass Trap

24BUpper spray arm assembly70Motor & C Pump

25Upper spray arm pin70ACirculation motor shield

30In line water heater70Bcapacitor mtg.Screw

31Cover71Sensor turbidity C

32Delivery check W tubing assy71*wiring harness turbidity

33Mid Nozzle Level Assembly 71Aturbidity O-ring

40Hose clamp72Sensor leak C detector

40AHose clamp73lobeScrew recess

40BHose clamp80DrainValve C assembly

41Hose clamp91drain hose Plug

41Ared clamp Spring92red hose Clamp

41Bred clamp Spring

Lower frame and base assembly

No.Part DescriptionNo.Part Description

1Door hinge spring19Plate adjustment

2Base mounting frame20Junction box cover

3Valve C Assembly21junction Box

3*valve Deflector22electrical Grommet

4Control C Assembly23ground connector

5control Bracket housing24Light C Assembly

6Screw plas30Assembly Duct side

7 Screw lobe31drying cover inlet

8Kick plate32water tubing inlet

9Toe adjustable plate33tubing clamp

10phillips Screw head40Duct C Assembly

11Screw lobe41drying Gasket duct

12diagonal Frame leg42Motor C drying

13Base tray label50Plate Adaptor assembly

14Connection tape51pan Screw head

15Levelling leg60service valve cover

16Mounting plate90water Plug valve

17pulley bracket assembly91wiring Clip

18Pulley hinge cable

Racks assembly

No.Part DescriptionNo.Part Description

1Lower rack assembly14down fence fold

2main basket silverware14Adown fence fold

2Aside basket silverware15lower basket fence

2Bside basket silverware16basket main lid

2Cflexible holder silverware16Abasket main lid

3upper rack assembly16Bbasket main lid

4guide rail clip16Cknife basket lid

5guide rail clip16Dchop sticksLid

6upper guide rail16Ebasket RH Lid

7lower roller assembly17upper handle front

7Alower roller assembly17Aupper handle back

8spray arm tracket18upper handle screw

9manifold mtg clip19adjustment Plate Assembly

10knife basket assy19Aadjustment Plate Assembly

10AinHolder snap20actuator assembly pad

10Butility tray21mtg adjustment plate

10Cutility tray lid22mech housing adjustment

11upper Shelf cup24actuator upper clamp

11Ashelf cup clip25mech adjustment spring

12down fence fold26lobe Screw

12Adown fence fold27cup clip

12Bdown fence fold28lower rack handle

13clip29lower rack handle

13Aupper fence clip30champagne holder clip

31champagne glass holder

Dishwasher

Training Material

January 07th 2014

Wax motor

1 Dell - Internal Use - Confidential - Legal Hold

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