A Collection of Predictive maintenance Articles

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PredictiveMaintenance

A collection of posts discussing aspects of predictive maintenance

Can Vibration Unbalance Affect the Function of Electric Motors? ............... 2

Digital Thermography: See it Before it Burns You .......................................... 3

Giving your equipment the finger. Wait, what? ............................................... 5

Laser Shaft Alignment: Cornerstone of Predictive Maintenance ................. 6

Maintenance Tips to Cut Costs and not Quality .............................................. 7

PdM: Programs Saving Money & Headaches .................................................. 8

Reliability: Layered like an Onion ....................................................................10

Shaft Alignment: Why you need to stay in line .............................................12

Predictive Maintenance Services from L&S Electric ....................................15

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Can Vibration Unbalance Affect the Function of Electric Motors?

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rotating apparatus repair and a leading supplier of

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Can Vibration Unbalance Affect The Functioning OfElectric Motors?

Posted on March 18, 2013 by David Manney

Reliability is an industry imperative when it

comes to motor function. Motor vibration is a

critical issue and likely to give rise to various

problems. Vibration causes may include:

Electrical imbalance in the circuitryMechanical imbalances arise due to thedefects in coupling, bearing, or otherpart.External imbalance effects that includebase and shaft misalignment issuesSpeed of motor and the resonanceproduced can also lead to vibrationunbalance

Though this appears to be a small issue, it is

likely to lead to great problems. The type of

harm caused varies according to the type of

vibration unbalance. The various problems

induced by vibration defects are as follows.

Driven Machine Imbalances

Producing this type of imbalance occurs when the moving parts of the machine are off-

balanced. When this imbalance crosses a certain limit, it can affect the moving parts of the

motor thereby leading to motor damage.

Coupling Imbalance

When there is an improper arrangement of key and couplings on the frame, or there is

some problem with alignment and mounting capabilities of the machine, this sort of

imbalance is likely to occur. This condition may even include the usage of an over-

sized coupling. This may lead to bending of shaft, extreme imbalance, and rubbing of seals.

If this imbalance goes beyond limits, it may result in catastrophic failure of shaft.

Thermal Imbalance

Rotor movement produces high temperatures, and when there is too much heating in an

improper manner, the shaft may bend and the equipment alignment may be disturbed. This

affects the rotor placement.

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Modal Shape and Natural Frequency Unbalance

The stator core develops vibrations when applying a magnetic field. The frequency of these

vibrations is associated with the modal patterns. In case, the modal pattern’s frequencies

match, producing large resonance. This introduces serious vibration, and unbalances the

running parts of the motor.

Rotor Bar passing Vibration Unbalance

When there is excess load on the motor, which induces stator current in the rotor bars,

and this gives rise to passing frequency in the rotor bars. This frequency can be quite

harmful to the motor if the tolerance limits are crossed. If this happens, the motor is

unreliable, and the operations are unpredictable. The motor experiences imbalances in

velocity, displacement, and stress in the stator core iron and stator tooth iron.

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Related Posts via Taxonomies

Giving your equipment the finger. Wait, what? (2)PdM: Programs Saving Money & Headaches (2)Laser Shaft Alignment: Cornerstone of Predictive Maintenance (2)Reliability: layered like an onion (2)Predictive Maintenance: an overview (video) (2)Video: Shaft Alignment – The Basics (2)Glossary of Useful Machinery Alignment Terms (2)The Various Aspects of Predictive Maintenance (2)Maintenance Tips to Cut Costs and not Quality (1)Shaft Alignment: Why You Need to Stay In Line (1)

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Digital Thermography: See it Before it Burns You


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Posted on February 19, 2013 by David Manney

Use of digital thermography is one of the most effectively used techniques in monitoring

equipment and machinery internal conditions in industrial field. This technique is used in proper

verification of and measurement of the temperature of objects’ surfaces.

With a precise and dependable conclusion it can be determined if there is high surface

temperature in machinery or equipment surfaces. High surface temperature can lead to heat

emission that can cause precious loss of energy.

With the proper application of digital thermography technique it will be easier to create a

reliable and precise output that allows the specialists to effectively evaluate back up and data

software.

How Digital Thermography Technique Works

Technicians using digital thermography make use of special camera that is especially tailored to

monitor the infrared emissions of energy. The camera has the ability to detect an object’s

electromagnetic energy, which appears as a form of heat. The image taken by the camera is

transferred as a video signal that generates the color image that will be used for a

comprehensive data analysis.

By saving the video signal, specialist can also create software back-up using the infrared

thermography. Doing so allows for an elaborate evaluation of the gathered data for further and

future analysis.

Digital infrared thermography also lets technicians do proper temperature profiling of a

machines’ point or surface. The technique makes use infrared based on the theory that every

machine releases infrared energy, which is a form of energy that contains specific intensity as a

temperature function. A machine’s surface temperature can be easily detected using an infrared

scanning device or system. The thermal pointer and scanner, which are thermography

instruments, work well together. The pointer measures the specific point or surface temperature

and the scanner will record the surface’s thermal profile.

Benefits of Using Digital Thermography

There are many benefits of using digital thermography than any other techniques used. The first

one is the simplicity in approximation of the amount of heat loss during surface temperature

increase.

With the application of digital thermography, there is the ease in estimating the amount of heat

that is lost when there is an increase in surface temperature. Broken insulation can result to

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loss of heat that may lead to loss of coal. When defective areas are not immediately repaired,

severe damage in equipment could be the result and there will be the need to purchase

replacement to faulty units.

Digital thermography allows provides non-invasive technique which means that it also works on

specific parts of the equipment that it needs to deal with. Other parts will not be invaded thus

are safe from any possible invasion damages.

Industrial facilities gain a lot of benefits with the use of digital thermography, because this

technique allows the plant manager to effectively establish if there is any possible malfunction

in electrical machinery and motors. The plant engineer will be able to come up with the best

solutions before the entire machine system shuts down because of the faulty or heated

conditions. This significant feature of this technique prevents loss or decreased in the plant

production.

Another important benefit is that digital thermography allows the plant engineers to guarantee

safety of the all plant machinery and equipment.

When heat loss in machinery and equipment is prevented, the plant can save a lot of money,

because they will be able to solve the issues of faulty and heated industrial units’ surfaces.

Thus, business owners save money from unit repair or replacement.

Early detection of possible malfunctions simply means early solutions to problems can be

formulated. Therefore, costly repairs can be prevented and unit replacement totally eliminated.

Use of digital thermography in determining the temperature of equipment, machinery and other

industrial units, allows the industry to see the possible fault before it burns them down.

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Rhinelander, WI may be next to lose a paper mill (2)Glossary of Useful Machinery Alignment Terms (2)Counterfeit Ball Bearings (2)Predicting Bearing Failure (2)Ultrasonic Detection Testing (2)Understanding Motor Power Factor (2)Introducing Ludeca’s New Laser Align App (2)Giving your equipment the finger. Wait, what? (1)Maintenance Tips to Cut Costs and not Quality (1)PdM: Programs Saving Money & Headaches (1)

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Giving your equipment the finger.Wait, what?


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Giving your equipment the finger. Wait, what?

Posted on November 13, 2013 by David Manney

Predictive maintenance programs use many sophisticated tools to

help determine the health of your equipment. Did you know your

finger can also help?

Looseness can be detected with a vibration analyzer. When

you see looseness, use your finger as a sensor and run it

around the interfaces of the bearing pedestals, housings,

and foundations. It is surprising how sensitive one can be

to the phase difference of shaking parts that have become

loose. See that it is remedied before it causes catastrophic

failure.

In the article, Ludeca relates a study that Toyota performed

regarding premature equipment failure. 80% of all premature

equipment failures are the result to three causes that could have

been prevented the failure:

1. Looseness2. Improper Lubrication3. Contamination

In addition, inadequate lubrication can be the culprit for other types of equipment failure.

Often, by the time poor lubrication is detected, a considerable amount of damage

has already been done. An electric motor’s winding insulation breakdown rate is

doubled for every 18° F rise over 165° F. This is why motor cooling fins are actually

for cooling and not for holding dust, grime, or whatever.

Common sense and some basic observations go a long way in ensuring the health and

longevity of your equipment.

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Maintenance Tips to Cut Costs and not Quality (2)

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Laser Shaft Alignment: Cornerstoneof Predictive Maintenance


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Laser Shaft Alignment: Cornerstone of PredictiveMaintenance

Posted on September 30, 2013 by David Manney

Laser shaft alignment is a way of

measuring misalignment between two or

more shafts and is the industry standard

for predictive maintenance and machinery

alignment. The manufacturing industry

today uses laser shaft alignment heavily

because machinery alignment is a cost-

effective solution whenever critical

functions are at risk. When a driver like an

electric motor or a turbine is coupled to a

pump, a generator, or any other piece of

equipment, it is essential that all the shafts

are accurately aligned. Any misalignment

between them increases stress on the

shafts and will almost certainly result in

excessive wear and premature failure of

the equipment. This can be exceedingly

costly. When your equipment is down, is

profitability being sacrificed for shortsighted or outdated policies? These days, who can afford

that?

Typical causes of misalignment range from initial fabrication to operational vibration, overheated

components, bearing issues, the high-energy usage, load imbalance and rotor bar problems. In

addition, older, low-resolution, dial indicator technology cannot measure accurately enough for

today’s specifications and applications. Dial technology is also subject to reading errors, rate-

dependent hysteresis and sticky dials. In contrast, laser alignment systems make shaft

alignment faster, easier and more accurate than dial technology as they eliminate the sag and

thermal changes inherent in dial indicators.

In order to keep your machinery operating at the lowest cost and highest yield, you have, no

doubt, implemented a routine maintenance schedule. Maintenance can be broken down into

four levels:

1. Reactive (aka run-to-failure)2. Basic preventive maintenance and routine inspections3. Combination predictive/preventive maintenance methodologies4. Incorporating a computer maintenance management system (CMMS) with laser shaft

alignment, vibration analysis, infrared thermography, etc., and predictive and preventive

L&S Electric > Blog > Predictive Maintenance Programs > Laser Shaft Alignment: Cornerstone ofPredictive Maintenance


maintenance methodologies

Laser shaft alignment is a natural fit with CMMS because it does all the calculations and

graphically prompts you through each step of the alignment process. It collects reliable

information regarding the condition of a machine that might otherwise go undetected until the

machine runs to failure.

Researchers estimate that as much as 50% of the damage to rotating machinery directly relates

to misalignment. Therefore correcting this problem is critical to production. However, these are

not the only reasons. Laser shaft alignment can dramatically reduce your operating costs

through:

Earlier identification of problems, enabling proactive maintenanceLower overall cost of doing business through exceptional reduction in machine failuresLower labor costs as a result of fewer emergency repairsProduction optimization by maximizing uptimeIncreased quality of production and extended useful lifecycles via significant reduction inmechanical vibrationConsistently accurate, error-free measurements to 0.0001″ (2.54μ), with reportsgenerated directly from the instrument in conformity with current ISO requirementsQuantifiable energy savings

In summation, laser shaft alignment is the cornerstone of predictive maintenance. Maintaining

manufacturing machinery using laser shaft alignment is no longer an option; it is a must if you

expect to remain competitive in today’s economy. As a matter of policy, laser shaft alignment

should be an absolute necessity before your machinery is put in service.

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Video: Shaft Alignment – The Basics (3)Giving your equipment the finger. Wait, what? (2)PdM: Programs Saving Money & Headaches (2)Reliability: layered like an onion (2)Predictive Maintenance: an overview (video) (2)Shaft Alignment: Why You Need to Stay In Line (2)Why Shaft Alignment? (2)Can Vibration Unbalance Affect The Functioning Of Electric Motors? (2)Glossary of Useful Machinery Alignment Terms (2)Zero Degrees of Separation: Laser Shaft Alignment (2)

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Maintenance Tips to Cut Costs and not Quality


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Maintenance Tips to Cut Costs and not Quality

Posted on October 28, 2013 by David Manney

There are tips aplenty promising to cut your maintenance costs, but at

what cost? If using This saves $100 each month, but raises the cost

of That, is it really a savings?

In the spirit of offering some really good tips that save money and not

quality, Ludeca presents five tips to consider.

1: Establish a Reliability Centered Maintenance Program

A well established Reliability Centered MaintenanceProgram helps identify correct maintenance tasks toincrease the reliability of the assets and cut costs byeliminating unnecessary PM tasks.Reliability Centered Maintenance Programs assist in clarifying maintenanceresponsibility and prevent costly unplanned downtime.

2: Perform a Criticality Assessment of all Assets

Criticality Assessments will determine which components are critical to anoperations efficiency and should receive the focus.Criticality Assessments quantify safety, environmental, operation, and repaircost consequences in the event of a functional failure.Perform Criticality Assessments on your spares inventory. Do you have thecorrect spares and quantity of spares in stock? Do you have unnecessaryspares in stock that take up warehouse space and tie up capital that could beused elsewhere?

3: Avoid Costly Repairs by Analyzing Vibration Data on a Consistent Basis

Consistent analysis allows the ability to monitor trends and detect problemsbefore catastrophic failure occurs.Consistent analysis and trending allows flexibility in scheduling maintenanceand reduced maintenance costs by preventing unscheduled downtime.

4: Avoid Fixing Repeat Offenders by Completion of Root Cause Failure Analysis

Root Cause Failure Analysis will determine the underlying problem causing thefailure to determine the best course of actionMany failures are caused by operational issues instead of equipment ormaintenance issues. A minor process adjustment may increase reliability andreduce costs.

5: Ask Questions

Vibration analysis and other PdM technologies can help identify a potentialissue but sometimes can be difficult to understand. Do not be afraid to seekexpert guidance when potential issues are identified.

Have you implemented any of these tips already? If so, what savings have you measured?

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PdM: Programs Saving Money & Headaches


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Posted on October 25, 2013 by David Manney

Predictive Maintenance (PdM) programs provide

proven methodologies and use technologies to

evaluate the condition of in-service assets by

predicting optimal times for corrective equipment

maintenance based on a direct relationship between

an asset and operating conditions.

PdM provides a high return on investment (ROI) by

virtually eliminating catastrophic failure. When you

know which equipment needs maintenance and why,

PdM replaces unscheduled maintenance stops without

shutting down most of the equipment, thus increasing

operational uptime. If the equipment shut down is

scheduled, PdM offers a quicker turnaround as well as

Lockout/Tagout protocols, ensuring that machines are

properly shut off and not restarted prior to the

completion of service. Other advantages include:

Extended equipment lifetimeLower impact on the environmentOptimized spare parts handling

An effective PdM program uses non-destructive testing, such as:

Acoustic Emission Analysis

Acoustic analysis is used for the inspection of critical air and gas conveyance components in

your facility, making it possible to “hear” rotating machinery noise that are typically drowned out

by ambient noise.

Ultrasonic technology detects distinctive sounds caused by friction and stress waves.Changes in these waves suggest deteriorating conditions earlier than technologies such asvibration or oil analysis. With proper ultrasonic measurement and analysis, it’s possible todifferentiate normal wear from abnormal wear, physical damage, imbalance, and lubricationproblems. Ultrasonic detectors also catch corona and arcing of power transmission lines indaytime.Infrasonic technology measures the intensity of ultra-low frequencies generated by large,wind turbines near populated areas.

Thermographic Analysis

Infrared (IR) light and analysis provides the widest, non-invasive range of applications, from

high to low-speed equipment and can be effective for spotting both mechanical and electrical

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power transmission lines, electrical panels, substations, rotary equipment, and other mechanical

and process related components that lead to catastrophic damage if not replaced early.

Lubricant Analysis

Lubricant analysis extends machine and oil life. There are two categories of lubricant analysis,

Used Oil Analysis and Wear Particle Analysis:

Used Oil Analysis determines the condition and quality of the lubricant and its suitabilityfor continued use;Wear Particle Analysis determines the mechanical condition of lubricated machinecomponents, allowing you to detect and identify the composition of solid material presentand evaluate particle type, size, concentration, distribution, and morphology.

Vibration Analysis

Vibration analysis is most effective on high-speed rotating equipment. Vibration analysis easily

diagnoses pending equipment failures as well as lubrication needs. According to ISA Automation

Week, 25 years of documented savings show a 20:1 benefit-to-cost ratio for vibration analysis

programs.

In conclusion, the advantages of a PdM program are manifold and should be an integral part of

any serious maintenance program. The US Department of Energy (DOE) estimates an 8%–12%

cost savings over preventive maintenance. In fact, according to the DOE, the following average

savings are typical within industrial settings:

Up to 1000% ROI70%–75% reduction in equipment breakdowns35%–45% reduction in process downtime25%–30% reduction in maintenance costs, including parts and labor20%–25% increase in production

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Reliability: layered like an onion (3)Predictive Maintenance: an overview (video) (3)Giving your equipment the finger. Wait, what? (2)Laser Shaft Alignment: Cornerstone of Predictive Maintenance (2)Video: Shaft Alignment – The Basics (2)Why Shaft Alignment? (2)Can Vibration Unbalance Affect The Functioning Of Electric Motors? (2)Glossary of Useful Machinery Alignment Terms (2)Understanding Motor Power Factor (2)Zero Degrees of Separation: Laser Shaft Alignment (2)

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Reliability: Layered like an Onion


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Reliability: layered like an onion

Posted on August 9, 2013 by David Manney

Reliability is something that produces

similar results under consistent conditions.

In the world of rotating apparatus,

depending upon your motor, gearbox,

blower, etc, isn’t simply important, it’s vital.

Writing at his blog, Jim Cahill spotlights an

industrial energy team and their focus on

reliability in our process world:

Having reliable process manufacturing

operations begins with reliable

components and reliable control

strategies to handle changing

conditions. Emerson’s Jennifer

Sandstrom, a senior industrial energy consultant, highlights the role of consultants

in unpeeling the many aspects of designing and maintaining reliable operations.

Reliability is something (equipment, software, etc) that

produces similar results under consistent conditions. Well,

that’s easily said and easily understood but if you, and if

you’re reading this blog you probably do, live in a process

world, the conditions are consistently dynamic meaning

similar results could be quite a challenge!

And, speaking of similar, similar in the way that a Timex is

similar to a Rolex? After all they are both time pieces that monitor the passage of

time but the connoisseur of chronometry or horology may beg to differ about

similarities and results. One of the challenges then in delivering reliability is to

understand the context and for us that means the client, his pain and his process.

Emerson has a longstanding background in the supply of reliable technology—

Fisher valves or regulators, Rosemount and Rosemount Analytical measurement

devices, DeltaV hardware, etc. (too many to include!) all with documentation to

prove and certify mean time between failures (MTBF) and other key performance

indicators (KPIs) and metrics that define reliability.

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Reliability: layered like an onion

Posted on August 9, 2013 by David Manney

Reliability is something that produces

similar results under consistent conditions.

In the world of rotating apparatus,

depending upon your motor, gearbox,

blower, etc, isn’t simply important, it’s vital.

Writing at his blog, Jim Cahill spotlights an

industrial energy team and their focus on

reliability in our process world:

Having reliable process manufacturing

operations begins with reliable

components and reliable control

strategies to handle changing

conditions. Emerson’s Jennifer

Sandstrom, a senior industrial energy consultant, highlights the role of consultants

in unpeeling the many aspects of designing and maintaining reliable operations.

Reliability is something (equipment, software, etc) that

produces similar results under consistent conditions. Well,

that’s easily said and easily understood but if you, and if

you’re reading this blog you probably do, live in a process

world, the conditions are consistently dynamic meaning

similar results could be quite a challenge!

And, speaking of similar, similar in the way that a Timex is

similar to a Rolex? After all they are both time pieces that monitor the passage of

time but the connoisseur of chronometry or horology may beg to differ about

similarities and results. One of the challenges then in delivering reliability is to

understand the context and for us that means the client, his pain and his process.

Emerson has a longstanding background in the supply of reliable technology—

Fisher valves or regulators, Rosemount and Rosemount Analytical measurement

devices, DeltaV hardware, etc. (too many to include!) all with documentation to

prove and certify mean time between failures (MTBF) and other key performance

indicators (KPIs) and metrics that define reliability.

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Click to View PostWith thanks and praise, we (consultants and employees) march forward with the

confidence that our recommendations of tangible equipment to process

manufacturers are solid and reliable in theory as well as practice. So one concern is

assuaged on the front of reliability but what about the other concerns? Reliability of

design, or more importantly the reliability of the Solution, and then thinking back to

the nature of a process and thinking, again, about the definition of reliability.

The challenge then becomes how do we take a process, which due to physics or

nature could be inconsistent, and make it consistent? Or worse, how do we take a

process input that by its nature is inconsistent, like a variable-BTU fuel, and make

its inconsistent make up look and feel consistent in our control process? And once

we’ve done that what have we gained and have we resolved the question of

reliable? Well, isn’t this just the challenge that keeps Emerson’s Industry

Consultants up at night and make their brains churn with the possibilities and

pitfalls? It turns out that is quite an onion to peel!

Let’s take a look at the paradigm Emerson’s

Industrial Energy Consultants follow and

how they started to peel the onion!

First, they listen and listen a lot. One of the

resounding themes they hear is that

operators struggle to respond to normal

variations in utility demands and that

becomes even more difficult under abnormal

circumstances. The abnormal circumstances

they discuss are things like process trips or process variation in the form of up or

downstream upsets, equipment issues, and human error due to lack of information

or a deluge of information, the general stress that comes with unexpected events.

Now starts the opportunity to help and begin to create order out of what seems to

be chaos! So, barring a very specific complaint that would direct a consultant to a

particular problem first, the team goes to the basement and starts at the

beginning. I know it sounds ridiculously basic, but we all know the acronym

(K.I.S.S.), Industrial Energy consultants attack in a systematic methodology; they

go out, look and listen to what the equipment and process tells them.

What is the condition of things? Are the critical items installed correctly and do they

work? What does the air flow measurement installation look like? Is it installed

correctly? Is the tubing crimped or bent? What type of airflow is it? What

maintenance history does it have?

We look at dampers that sometimes groan and creak at the thought of movement

not exactly the picture of “reliable”. So goes the step-by-step examination of the

patient. You may ask, why; why start here and not with the control system?

Well, it won’t do much good to tear out the parking lot in a vehicle without wheels,

why would I think reliable control is within reach if I don’t have reliable

instrumentation and control elements. We know this because as a consulting

group, it would frighten most of the team to quote the combined years of

experience invested in looking, listening, and analyzing equipment and processes,

and then revising and testing new ideas.

And if it should be a greenfield project, we take the same lessons learned and look

at P&ID‘s, instrument lists and performance specifications. How will this process

unit fit into the whole picture? How does it have to contribute the surrounding

process?

This basic survey helps start to identify what the major “reliability” challenges are

as related to equipment and gets that first layer off. In my next post, we’ll talk

about where to go from here what’s in the solution that makes it special.

Reliability is a broad term encompassing predictive maintenance (PdM). Taking that snapshot of

your piece of equipment that provides an overview of its help is an important step towards

giving you the ability to plan downtime instead of an unexpected failure. If you’re interested in

learning more about how a PdM program can help you, let us know.

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Shaft Alignment: Why you need to stay in line


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Shaft Alignment: Why You Need to Stay In Line

Posted on July 22, 2013 by David Manney

Since 1984, LUDECA has been a pioneer in laser shaft

alignment technology and since the advent of the Internet,

a leading source for information regarding predictive

maintenance.

In separate posts, LUDECA presents several benefits of laser shaft alignment, some you may

not have considered:

3 Benefits of Precision Shaft Alignment

1. Reduced Energy Consumption

Significant power savings can be made through accurate alignment. Precise

alignment eliminates reaction forces and reduces energy consumption by up to

10%.

2. Reduced Incidence of Repairs

Mechanical seal repairs decline by up to 65% when precision alignment is carried

out on a regular basis.

The rate of repairs declines by up to 30% when precision laser alignment becomes

an integral part of the pump repair schedule. Maintenance costs are also reduced

through lower parts expense and inventory levels.

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OPTALIGN First Laser Alignment

Tool

3. Longer Machine Life

Relation between offset and bearing life cycle: The smaller the offset misalignment,

the greater the expected bearing life cycle.

The Green in Precision Shaft Alignment

Precision Alignment of electric motors coupled to pumps, compressors, gearboxes,

blowers, etc.; contribute to savings in the consumption of electricity. Since all fossil

power plant generated electricity causes carbon emissions, reduced electricity

consumption also means LOWER RELATED CARBON EMISSION.

In 1984 the first pre-programmed Laser

Coupling/Shaft Alignment tool was launched

by our principals PRUEFTECHNIK Alignment.

For already 25 years, our alignment tools

are contributing to the GREEN movement.

Not only does precision alignment

contribute to going GREEN, it also extends

the life of Bearings, Mechanical Seals,

Couplings and extends the Mean-Time

Between-Failure, thus saving money for

parts and increasing production.

All industries using pumps to transport





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hazardous liquids – and that means

basically the entire chemical industry as well as refineries – have experienced

leaking seals. Hazardous liquids contaminate the environment. Only well aligned

pumps guarantee that mechanical seals perform to perfection and that means

avoidance of leakage, another area where Better Alignments help the GREEN

movement.Every leaking seal or stuffing box in Water and Water Treatment plants

is a waste of scarce resources. Only good alignment of motor-driven pumps will

avoid leakage. Shaft/Coupling alignment contributes in more than one way towards

great savings and a GREENER ENVIRONMENT.

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David Manney


Video: Shaft Alignment – The Basics (3)Giving your equipment the finger. Wait, what? (2)Maintenance Tips to Cut Costs and not Quality (2)Laser Shaft Alignment: Cornerstone of Predictive Maintenance (2)Why Shaft Alignment? (2)PdM: Programs Saving Money & Headaches (1)Shaft Grounding Rings: worth the trouble? (1)Reliability: layered like an onion (1)Predictive Maintenance: an overview (video) (1)Reality vs. Perception in Harmonic Distortion (1)

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OPTALIGN First Laser Alignment

Tool

3. Longer Machine Life

Relation between offset and bearing life cycle: The smaller the offset misalignment,

the greater the expected bearing life cycle.

The Green in Precision Shaft Alignment

Precision Alignment of electric motors coupled to pumps, compressors, gearboxes,

blowers, etc.; contribute to savings in the consumption of electricity. Since all fossil

power plant generated electricity causes carbon emissions, reduced electricity

consumption also means LOWER RELATED CARBON EMISSION.

In 1984 the first pre-programmed Laser

Coupling/Shaft Alignment tool was launched

by our principals PRUEFTECHNIK Alignment.

For already 25 years, our alignment tools

are contributing to the GREEN movement.

Not only does precision alignment

contribute to going GREEN, it also extends

the life of Bearings, Mechanical Seals,

Couplings and extends the Mean-Time

Between-Failure, thus saving money for

parts and increasing production.

All industries using pumps to transport




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PredictiveMaintenance Services

Dedicated People, Quality Products, and Above All, Service.

SCHOFIELD715.359.3155 or 800.283.8332

DULUTH218.729.3375 or 800.943.9549

APPLETON920.730.0203 or 800.283.5564

MENOMINEE906.864.2500 or 800.864.2507

STURTEVANT262.886.1875 or 800.367.7676

MINNEAPOLIS763.780.3234 or 800.290.9320

ROTHSCHILD715.359.3155 or 800.283.8332

HYDRO SOLUTIONS715.359.3155 or 800.283.8332

www.lselectric.com

© L&S Electric 2012 • PMS11a

Vibration Analysis and Special Analyses ProgramsWith complete Predictive Maintenance Programs that are customized to your specific needs, we can diagnose defects in rotating equipment in their early stages before catastrophic failure or unscheduled downtime occurs.Laser Vibrometer ReadingsExperienced L&S technicians use advanced laser technology to detect problems in hard to reach areas. We are able to gather accurate data from as far away as 660 feet, reducing the number of inaccessible bearings.Operation Deflection Shape StudiesWhile a machine is operating, our equipment creates a 3-D animation of the structural movements, allowing us to accurately detect potential stress in rotating and driven equipment, bases, and motor frames.

Motor Current Signature AnalysisDetecting rotor problems in AC induction motors can prevent unscheduled downtime before valuable production time is lost.Roll Roundness Profile AnalysisBy measuring the relative motion between press rolls and detecting irregularities, roll roundness profile analysis helps ensure that your products achieve a consistent quality.Sound Level AnalysisQuantifying the decibel levels in noisy work areas ensures that accurate safety measures can be taken to protect your employees’ hearing.Ultrasonic Air SurveysUltrasound air surveys detect leaks in pressure and vacuum systems, detect electrical arcing, and inspect for bearing failure.

Notes:• All 3600 RPM motors should be checked yearly to assure a longer life.• Vibration Analysis findings determine when this may be required.

All of L&S Electric’s services come with detailed formal reports and historical trending for true Preventative and Predictive Maintenance Programs. These services also interface with our Motor Repair Shops for fast networking on problem solving. Networking and modems are available for faster response to problem containment issues.

Preventive and Predictive Program FrequencyElectrical Winding Analysis Start-up Semi-Annual As Required

Infrared Thermography Start-up Semi-Annual As Required

Switchgear Testing Start-up Annual As Required

Ultrasonic (HV) Start-up Semi-Annual As Required

Laser Shaft Alignment 1 & 2 Start-up As Required

Motor Current Analysis Start-up Annual As Required

Roll Profile Analysis Start-up As Required

Oil Sample Testing Annual As Required

On-Site Balancing (2) Start-up As Required

Ultrasonic (Air) Start-up Annual As Required

Vibration Analysis Start-up Quarterly Monthly As Required

Technology

A Collection of Predictive maintenance Articles