20
Installation and Operation Manual IOM AD3298602 Modular MediaFilter - Vertical Series Collector Models MDV-1, MDV-2, and MDV-3 Throughout this manual statements indicating precautions necessary to avoid equipment failure are referenced in a Note. Statements indicating potential hazards that could result in personal injury or property damage are referenced in a Caution! box. Installation, Operation, and Service Information This manual is property of the owner. Leave with the unit when set-up and start-up are complete. Donaldson Company reserves the right to change design and specifications without prior notice. MDV-1 MDV-3

Installation and Operation Manual · used for light lubrication and generally creates mist greater than one micron in size. Thermal effects occur when heat vaporizes the coolant,

  • Upload
    others

  • View
    1

  • Download
    0

Embed Size (px)

Citation preview

Installationand Operation Manual

IOM AD3298602

Modular MediaFilter™ - Vertical SeriesCollectorModels MDV-1, MDV-2, and MDV-3

Throughout this manualstatements indicatingprecautions necessary

to avoid equipment failure arereferenced in a Note. Statementsindicating potential hazards thatcould result in personal injury orproperty damage are referencedin a Caution! box.

Installation,

Operation, and

Service Information

This manual is property of the owner. Leave with the unit when set-up andstart-up are complete. Donaldson Company reserves the right to change designand specifications without prior notice.

MDV-1 MDV-3

Donaldson Company, Inc.

2

Caution!Application of Mist Control Equipment• Combustible materials such as buffing lint, paper, wood, aluminum or magnesium dust,

weld fume, or flammable solvents represent a fire or explosion hazard. Use special carein the selection and operation of all mist collection equipment when combustiblematerials are present to protect workers and property from damage due to fire and/orexplosion. Consult and comply with National and Local Codes relating to fire orexplosion, and all other appropriate codes when determining the location and operationof mist collection equipment.

• When combustible materials are present, consult with an installer of fire extinguishingsystems familiar with these types of fire hazards and local fire codes forrecommendations and installation of fire extinguishing and explosion protectionsystems. Donaldson Dust/Mist Collection equipment is not equipped with fireextinguishing or explosion protection systems.

• DO NOT allow sparks, cigarettes, or other burning objects to enter the hood or duct ofany mist control equipment as these may initiate a fire or explosion.

• For optimum collector performance, use only Donaldson replacement parts.

Warning – Improper operation of a mist control system may contribute to conditions in the workarea or facility that could result in severe personal injury and product or property damage. Checkthat all collection equipment is properly selected and sized for the intended use.

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

3

This manual contains specificprecautionary statements relative toworker safety. Read thoroughly andcomply as directed. Discuss the useand application of this equipmentwith a Donaldson representative.Instruct all personnel on safe use andmaintenance procedures.

Data Sheet

Model Number _______________________________ Serial Number ________________________________

Ship Date ____________________________________ Installation Date ______________________________

Customer Name ____________________________________________________________________________

Address ____________________________________________________________________________

____________________________________________________________________________

Filter Type ____________________________________________________________________________

Accessories ____________________________________________________________________________

Other ____________________________________________________________________________

Contents

Description ........................................................... 4Purpose and Intended Use .................................... 4Operation ............................................................. 5Inspection on Arrival ............................................ 6Installation Codes and Procedures ........................ 6Installation ........................................................... 6

Site Selection, Grade-Mounted Units .............. 6Unit Location ................................................. 6

Electrical Wiring ................................................... 7Rigging Instructions ............................................. 7

Hoisting Information ...................................... 7Standard Equipment ............................................. 8

Inlet Collar Installation .................................. 9Electrical Connection...................................... 9

Optional Equipment ........................................... 10HEPA/95% DOP Filter ................................. 10Sprinkler Installation .................................... 11

Preliminary Start-Up Check ................................ 12Service Information ............................................ 12

Operational Checklist ................................... 12Prefilter Cleaning and Replacement .............. 13Primary Filter Replacement .......................... 13Optional HEPA/95% DOP FilterReplacement ................................................. 14P-Trap Service ............................................... 15P-Trap with Y- Strainer, Screen Cleaning ...... 15

Troubleshooting ................................................. 16Warranty ............................................................ 20

Donaldson Company, Inc.

4

Description

The Modular MediaFilter - Vertical Series Collectorcollects airborne mist such as oil, water-soluble, andsynthetic coolant from machining operations. Threestages of filtration, plus an additional prefilter andHEPA or 95% DOP filter, provides a cleaner workenvironment as well as a more cost-effective meansof mist collection. With a nominal airflow capacityof 1,000/2,000 cfm for Model MDV-1; 2,000/4,000cfm for Model MDV-2; and 3,000/6,000 cfm forModel MDV-3, the Modular MediaFilter collectoris a strategic component to meeting industrial andgovernment air-quality standards. The highefficiency filters allow air and coolants to berecycled, and the filter efficiency remains constantas the unit operates.

A variety of prefilter options specifically designedfor mist collection, from heavy liquid-load to heavyparticulate-load applications, are available toincrease the versatility of the unit.

Purpose and Intended Use

Airborne mists are small droplets of liquidsuspended in the air. Modular MediaFilter - VerticalSeries Collectors are used in machine tooloperations using metalworking fluids.Metalworking fluids include straight oil, water-soluble coolants, synthetic coolants, and semi-synthetic coolants. These fluids perform a variety offunctions such as lubricating or cooling the part orthe tool, flushing chips away from the part, andsuppressing dust and smoke. Oils and coolantsallow machines to operate faster and tools to lastlonger resulting in high quality parts.

Mist is created in two ways: mechanical action orthermal effects. Mechanical action refers to aerosolused for light lubrication and generally creates mistgreater than one micron in size. Thermal effectsoccur when heat vaporizes the coolant, the vaporcools and recondenses into a mist. Thermal effectscreate mist from 0.01 to 1 micron in size. Othercontaminants, such as dust from the part or thetool, or smoke from the combustion of the oil orcoolant are also generated when usingmetalworking fluids.

The Modular MediaFilter - Vertical Series Collectoris specifically designed to collect and filter mist fromthe air. With a properly selected prefilter and thehigh-loft vee-bag (primary filter), the ModularMediaFilter can also be used on applicationsranging from mist with high volumes of dust to wetand sticky contaminants.

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

5

Operation

airstream and into the hopper. The incoming airpasses through the prefilters first. The prefilters aredesigned to reduce the liquid- and particulate-loadto the primary filter. Smaller mist droplets pass tothe primary filter where the small droplets collectand drain.

Clean, mist-free air is discharged through the top ofthe unit. A Magnehelic® gauge, mounted on the sideof the unit, monitors the pressure drop across theprefilters and primary filter.

Unit Operation, Model MDV-1 Shown

dirty-air inlet

first-stage filter

second-stage filter

final filter

Caution!

• Misuse or modification of this equipmentmay result in personal injury.

• Do not misuse or modify.

During normal operation, contaminated air entersthe unit through one of the dirty-air inlets locatedon each side, toward the bottom of the unit. Theincoming air slows and turns upward, causing largemist droplets and particles to fall out of the

Magnehelic® is a registered trademark of Dwyer Instruments, Inc.

Donaldson Company, Inc.

6

Inspection on Arrival

1. Inspect unit on delivery.

2. Report any damage to the delivery carrier.

3. Request a written inspection report from theClaims Inspector to substantiate claim.

4. File claims with the delivery carrier.

5. Compare unit received with description ofproduct ordered.

6. Report incomplete shipments to the deliverycarrier and your Donaldson representative.

7. Remove crates and shipping straps. Removeloose components and accessory packagesbefore lifting unit from truck.

Installation Codes and Procedures

1. Safe and efficient operation of the unit dependson proper installation.

2. Authorities with jurisdiction should beconsulted before installing to verify local codesand installation procedures. In the absence ofsuch codes, install unit according to theNational Electric Code, NFPA No. 70-latestedition.

3. A qualified installation and service agent mustcomplete installation and service of thisequipment.

Installation

Site Selection, Grade-Mounted Units

1. The unit can be located on a reinforced concretefoundation.

2. Provide clearance from heat sources andinterference with utilities when selecting thelocation.

Unit Location

1. When hazardous conditions or materials arepresent, consult with local authorities for theproper location of the collector.

2. Foundation must be sized to accommodate theentire weight of the unit, plus the weight of thecollected material, piping, and ductwork.

3. Prepare the foundation in the selected location.Install anchor bolts to extend a minimum of1-1/2-inches above foundation unless otherwiseindicated on the Specification Control drawing.

4. Locate the collector to ensure the shortest andstraightest inlet duct length, easy access toelectrical connections and routine maintenance.

Caution!

OSHA may have requirements regardingrecirculating filtered air in your facility.Consult with the appropriate localauthorities to ensure compliance with allcodes regarding recirculating filtered air.

Caution!

• Combustible materials such asbuffing lint, paper, wood, aluminumor steel dust, weld fume, andflammable solvents represent fire orexplosion hazards.

• Use special care when selecting andoperating all collection equipmentwhen combustible materials arepresent to protect workers andproperty from damage due to fireand/or explosion.

• Consult and comply with Nationaland Local Codes relating to fire orexplosion, and all other appropriatecodes when determining the locationand operation of mist collectionequipment.

• Donaldson equipment is notequipped with fire extinguishing orexplosion protection systems.

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

7

Electrical Wiring

Caution!

• Electrical installation must beperformed by a qualified electricianand comply with all applicablenational and local codes.

• Lock out electrical power sourcesbefore performing service ormaintenance work.

• Do not install in classified hazardousatmospheres without an enclosurerated for the application.

1. All electrical wiring and connections, includingelectrical grounding, should be made inaccordance with the National Electric Code,NFPA No. 70-latest edition.

2. Check local ordinances for additionalrequirements that apply.

3. The appropriate wiring schematic and electricalrating must be used. See unit’s rating plate forrequired voltage.

4. If the unit is not furnished with a factory-mounted or shipped loose disconnect switch, anelectric disconnect switch having adequate ampcapacity shall be installed in accordance withPart IX, Article 430 of the National ElectricalCode, NFPA No. 70-latest edition. Check unit’srating plate for voltage and amperage ratings.

5. Refer to the wiring diagram for the number ofwires required for main power wiring andremote wiring.

Rigging Instructions

Suggested Tools & Equipment

Crane or Forklift Pipe WrenchesSlings, Spreader Bars, Socket Wrenches and Clevis Pins End WrenchesClamps Large Crescent WrenchScrewdrivers Drill and Drill BitsPipe Sealant

Hoisting Information

1. Use all lifting points provided.

2. Use clevis connectors, not hooks, on lifting slings.

3. Use spreader bars to prevent damage to theunit’s casing.

4. Check the Specification Control drawing forweight and dimensions of the unit,subassemblies, and components to ensureadequate crane capacity.

5. Allow only qualified crane operators to lift theequipment.

6. Refer to applicable OSHA regulations and localcodes when using cranes, forklifts, and otherlifting equipment.

7. Lift unit and accessories separately, andassemble after unit is in place.

Caution!

• Failure to lift the collector correctlycan result in severe personal injury orproperty damage.

• Use appropriate lifting equipment andadopt all safety precautions needed formoving and handling the equipment.

• A crane or forklift is recommended forunloading, assembly, and installationof the collector.

• Location must be clear of all obstructions,such as utility lines or roof overhang.

Donaldson Company, Inc.

8

Standard Equipment

Caution!

The collector has a high center-of-gravityand may overturn if not secured properly.

• Secure the collector to the lifting device.

• Use care when moving the unit.

The Modular MediaFilter collector is shipped intwo sections; an inlet plenum and a filter cabinetsection with power pack.

1. Prepare the foundation in the selected location.Install customer-supplied 3/8-16 anchor bolts toextend a minimum of 1 1/2-inches abovefoundation.

2. Using a crane or forklift, lift the inlet plenuminto position over the anchor bolts and lowerslowly.

3. Level inlet plenum and secure to anchor bolts.

4. Apply the gasket shipped with the unit to theinlet plenum's top flange.

5. Using a crane or forklift, lift the filter cabinetwith power pack into position over the inletsection, lower slowly, and align bolt holes.

6. Secure the filter cabinet to the inlet section withthe hardware supplied.

7. Remove crane.

Typical Installation, Model MDV-1 Shown

3/8-16 anchor bolt

3/8-in flat washer3/8-16 hex nut

inlet plenum

gasket

filter cabinet

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

9

Inlet Collar Installation

1. Install the inlet collar to the desired inletlocation using the gasket and hardwaresupplied.

2. Install the inlet blank to the inlet opposite theinlet collar using the gasket and hardwaresupplied.

Electrical Connection

Inlet Collar Installation, Model MDV-1 Shown

Caution!

• Electrical installation must beperformed by a qualified electricianand comply with all applicablenational and local codes.

• Lock out electrical power sourcesbefore performing service ormaintenance work.

• Do not install in classified hazardousatmospheres without an enclosurerated for the application.

Modular MediaFilter collectors must be equippedwith a customer-supplied safety disconnect withshort circuit protection, contactors, and overloadprotection. Complete the wiring as shown in MotorStarter Wiring.

1FU

2FU

3FU

1M 1OL

1T2

1T3

fan

motor

Disconnect

1T11L1

1L2

1L3

208/230/460/575/60/3

Motor Starter Wiring

gasketinlet collar

Donaldson Company, Inc.

10

Magnehelic gauge(primary filter and prefilter)

Minihelic gauge(HEPA/95% DOP filter)

Motor Starter Control Box

Mount the motor starter control box in aconvenient location. An electrical knockout, sizedfor 1/2-in fittings, is provided on the left-hand sideof the blower cabinet. Increase knockout size usinga drill as required.

1. Using the wiring diagram supplied inside thecontrol box and the instructions on the motordecal, make the connections to the blowermotor.

Note: If the unit is supplied with an optionaljunction box, wire the motor starter tothe terminal strip located inside thejunction box according to the wiringdiagram supplied with the junction box.

2. Turn the fan-motor ON then OFF and check forproper rotation. Proper rotation is clockwise.

To reverse rotation, three-phase power supply:

Turn electrical power OFF at source and switchany two leads on the output-side of the fan-motor starter.

3. Ground cabinet according to local electriccodes.

HEPA/95% DOP Filter

If a HEPA or 95% DOP Filter module was orderedwith this collector, a Minihelic gauge comes factoryinstalled for measuring the pressure drop across thisfilter.

Magnehelic and Minihelic Gauge Configurationswith HEPA/95% DOP Module

Caution!

• Do not look into fan outlet todetermine rotation.

• Check that the exhaust plenum isfree of tools or debris beforechecking blower/fan rotation.

• Stand clear of exhaust to avoidpersonal injury.

Optional Equipment

Minihelic® is a registered trademark of Dwyer Instruments, Inc.

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

11

Sprinkler Installation

Optional fire control sprinklers are available for theModular MediaFilter collector. Model MDV-1 usesone sprinkler and Models MDV-2 and MDV-3 usetwo sprinklers. Each Donaldson Torit-suppliedsprinkler requires 20 to 60 psig water pressure witha 1-in supply line. The volume of water dischargedper sprinkler head at 20-psig is 6.3 gallons perminute.

Note: Consult with local authorities when installingfire control systems on collection equipment.

1. Remove or open the final filter access door(primary filter or HEPA/95% DOP access door)and remove the final filter to access the sprinklertap located in the blower chamber.

2. Remove the 1/2-in pipe plug from the sprinkler tap.

3. Apply pipe sealant to the sprinkler threads.

4. Thread the sprinkler into the 1/2-in sprinkler tapso the sprinkler is located above the final filteras shown and tighten securely.

Sprinkler Installation, (Blower Cabinet)Model MDV-1 Shown

Caution!

Sprinkler systems place a large quantityof water in the mist collector whenactivated. Provide adequate drainage toremove water. Excess water weight cancause the leg structure to collapse.

Caution!

Each sprinkler requires a 1-in supplyline at 20 to 60 psi water pressure.

Sprinkler Installation, Model MDV-3 Shown

blower access door

final filteraccess door;remove finalfilter to accesssprinkler tap

1/2-in pipeplug; removeand replacewith sprinklerhead

sprinklerhead

Donaldson Company, Inc.

12

Preliminary Start-Up Check

1. Check all electrical connections for tightness andcontact.

2. Check for and remove all loose items in or nearthe inlet and outlet of the unit.

3. Check that all service switches are in the OFFposition.

4. Check that all optional accessories are installedproperly and secured.

5. Check that all filters are properly installed andfilter access doors are closed and latched.

6. Fill P-Trap or ensure other type of drain isproperly installed.

7. Turn power ON at source.

8. Turn the fan motor ON then OFF to check forproper rotation by referencing the rotationarrow.

To reverse rotation, three-phase power supply:

Turn electrical power OFF at source and switchany two leads on the output-side of the fan-motor starter.

Service Information

Caution!

• Do not look into fan outlet todetermine rotation.

• Check that the exhaust plenum isfree of tools or debris beforechecking blower/fan rotation.

• Stand clear of exhaust to avoidpersonal injury.

Operational Checklist

1. Monitor overall performance of the collector.

2. Monitor exhaust. Exhaust should remainvisually clean throughout filter life. If leaks arevisible, check the filters for positive gasket seals.

3. Monitor hopper drainage. If slow or stopped,check hopper for obstructions and clean asnecessary.

4. Check that the P-trap is full. Refill if low or dry.

5. Check the prefilter and clean or replace asrequired.

6. Monitor pressure drop on the Magnehelic gaugeand Minihelic gauge (if unit is supplied with95% DOP or HEPA). If the reading issignificantly higher than initial clean filterreading, filter replacement or prefilter cleaningmay be required.

Note: Do not operate the unit without theprefilters in place. Significant reduction inprimary filter life can result.

Caution!

Lock out electrical power sources beforeperforming service or maintenance work.

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

13

Caution!

• Use proper safety and protectiveequipment when removingcontaminants and filters.

• Dirty filters may be heavier thanthey appear.

• Use care when removing filters toavoid personal injury.

• Do not drop filters.

Prefilter Cleaning and Replacement

All prefilters except the multi-vee can be cleanedand reused. Remove the prefilter through the loweraccess door. Wash prefilter in an appropriate washtank, rinse, dry, and re-install. Replace the multi-veeprefilter as necessary.

The high efficiency and multi-vee prefilters have a1-in mesh screen on the inlet side. This screen isdesigned to reduce the particulate load to the highefficiency and multi-vee prefilters extending theirlife.

The impinger has a 1-in mesh screen on the outletside to reduce particulate load and evenly distributethe airflow to the primary filter.

When servicing prefilters, always clean the 1-inmesh screen. Check that all particulate is removed.Replace the screen if particulate cannot be removedby cleaning.

Primary Filter (Vee-Bag) Replacement

Note: The vee-bag filter must be replaced. Do notwash.

1. Open the filter access door.

2. Remove the filter support rods by lifting therods from the retaining brackets.

3. Pull rods from the bag hoops.

4. Slide the vee-bag out through the door openingto remove it from the filter cabinet. Dispose ofthe filter.

5. Install a new vee-bag in the cabinet by slidingthe filter into the filter retention slot. Ensurethat the pile gasket on the bottom of the filterretention slot is secure. Replace if necessary.

6. Place a support rod through the 10 filter loopson the right and left sides of the filter.

7. Place the support rods in the retention bracketat the top of the filter module.

8. Inspect the door gaskets and replace asnecessary.

9. Close and secure the filter access door.

Donaldson Company, Inc.

14

Filter Removal and Replacement, Model MDV-1 Shown

Caution!

Install filters gasket side up.

Optional HEPA/95% DOP Filter Replacement

Note: The final filter must be replaced.Do not wash.

1. Open the final filter access door and lower theretention handles to release the filter.

2. Remove the filter.

Note: Dirty filters may be heavier than theyappear. Provide a support platform orhave two people, one on each side of thefilter, and pull the filter out.

3. Install the replacement filter gasket-side up.

4. Seal the filter in place by lifting the retentionhandles to the upright position.

impinger assembly

primary filter(vee-bag)

optional final filter(95% DOP or HEPA)

multi-vee assembly

high efficiencyprefilter

filter support rod

Modular MediaFilter - Vertical Series Collector, Models MDV-1, MDV-2, and MDV-3

15

P-Trap

P-Trap with Y-Strainer

strainer screen

P-trap valve

screenclean-out

valve

pipe plug

P-Trap Service

1. Place a suitable container under the P-trap, turnthe collector OFF, and remove the pipe plug.

2. Allow fluid and particulate to drain.

3. Use thread sealant and replace pipe plug.

4. Refill the P-trap with suitable fluid beforerestarting the collector.

P-Trap with Y-Strainer, Screen Cleaning

1. Place a suitable container under the screenclean-out valve, turn the collector OFF, close theP-trap valve, then open the screen clean-outvalve.

2. Allow fluid and particulate to drain.

3. With the clean-out valve open, slowly open theP-trap valve. This allows fluid still trapped inthe hopper to drain.

Note: A substantial amount of fluid may betrapped in the hopper and could exceedthe container capacity. Open the P-trapvalve slowly.

P-Trap with Y-Strainer, Screen Removal

1. Close the P-trap valve.

2. Unscrew the screen cap and pull the screen out.

3. Clean the screen and the inside of the Y-strainerbody and re-assemble taking care to seat thescreen in the body and cap.

4. Close the clean-out valve.

5. Refill the P-trap with suitable fluid beforerestarting the collector.

Donaldson Company, Inc.

16

Troubleshooting

Problem Probable Cause Remedy_lower Ñan and motordo not start

Improper motor wire size Rewire using the correct wire gauge as specified bynational and local codes.

Not wired correctly Check and correct motor wiring for supply voltage.See motor manufacturer's wiring diagram. Followwiring diagram and the National Electric Code.

Unit not wired foravailable voltage

Correct wiring for proper supply voltage.

Input circuit down Check power supply to motor circuit on all leads.

Electrical supplycircuit down

Check power supply circuit for proper voltage.Check for fuse or circuit breaker fault. Replace asnecessary.

Overload relay tripped Reset. Check amp draw on motor leads.

Defective overload heateror overload assembly

Replace as necessary.

_lower Ñan and motorstart, but do not stayrunninÖ

Incorrect motor starterheater elements installed

Check for proper heater elements and replaceif necessary.

Access doors are openor not closed tight

Close and tighten access doors.

Electrical circuit overload Check that the power supply circuit has sufficientpower to run all equipment.

Clean-air outletdischarÖinÖ oil mist

Filters not installedcorrectly

See Service Information on Page 12.

Filter or filter gasketdamage

Replace filters as necessary. Use only genuineDonaldson replacement parts. See ServiceInformation on Page 12.

InsuÑÑicient airÑlow Fan rotation backwards Proper fan rotation is clockwise when lookingdown at the blower motor. See Preliminary Start-Up Check on Page 12.

Access doors open or notclosed tight

Check that all access doors are in place and secure.

Fan exhaust area restricted Check fan exhaust area for obstructions. Removematerial or debris.

Prefilter plugged Remove and clean or replace.

Filters need replacement Remove and replace using genuine Donaldsonreplacement filters.

Plugged ducting Check ducting for obstructions and check thatdampers in ducting are not closed.

InsuÑÑicient hopperdischarÖe

Plugged P-trap Clean P-Trap. See P-Trap Service on Page 15.

iièuid leaâinÖ Ñromcollector door

Plugged P-trap Clean P-Trap. See P-Trap Service on Page 15.

© 2004 Donaldson Company, Inc. Printed in USA IOM AD3298602 April 2004

Donaldson Company, Inc.Industrial Air FiltrationP.O. Box 1299Minneapolis, MN [email protected]

Donaldson Company, Inc. is the leading designerand manufacturer of dust, mist, and fume collectionequipment used to control industrial-air pollutants.Our equipment is designed to help reduceoccupational hazards, lengthen machine life,reduce in-plant maintenance requirements,and improve product quality.

Parts and ServiceFor genuine Donaldson Torit replacement filters

and parts, call the Parts Express Line

800-365-1331 USA800-343-3639 within Mexico

www.donaldsontorit.comFor faster service, have unit’s model and serial number,

part number, description, and quantity available.

Limited Warranty

Donaldson® warrants to the original purchaser that the major structural components of the goods willbe free from defects in materials and workmanship for ten (10) years from the date of shipment, ifproperly installed, maintained and operated under normal conditions. Donaldson warrants all otherDonaldson built components and accessories including Donaldson Airlocks, TBI Fans, TRB Fans, FumeCollector products and Donaldson built Afterfilter housings for twelve (12) months from date of shipment.Donaldson warrants Donaldson built filter elements to be free from defects in materials and workmanshipfor eighteen (18) months from date of shipment. Donaldson does not warrant against damages due tocorrosion, abrasion, normal wear and tear, product modification, or product misapplication. Donaldsonalso makes no warranty whatsoever as to any goods manufactured or supplied by others includingelectric motors, fans and control components. After Donaldson has been given adequate opportunity toremedy any defects in material or workmanship, Donaldson retains the sole option to accept return ofthe goods, with freight paid by the purchaser, and to refund the purchase price for the goods afterconfirming the goods are returned undamaged and in usable condition. Such a refund will be in the fullextent of Donaldson’s liability. Donaldson shall not be liable for any other costs, expenses or damageswhether direct, indirect, special, incidental, consequential or otherwise. The terms of this warranty maybe modified only by a special warranty document signed by a Director, General Manager or Vice Presidentof Donaldson. Failure to use genuine Donaldson replacement parts may void this warranty. THEREEXIST NO OTHER REPRESENTATIONS, WARRANTIES OR GUARANTEES EXCEPT AS STATEDIN THIS PARAGRAPH AND Aii OTHER WARRANTIES INCiUDING MERCHANTA_IiITY ANDFITNESS FOR A PARTICUiAR PURPOSE, WHETHER EXPRESS OR IMPiIED ARE HERE_YEXPRESSiY EXCiUDED AND DISCiAIMED.