Gray WPLS Security Transceiver User Manual WPLS 160 67090347 RevJ

Gray Manufacturing Company, Inc. Security Transceiver WPLS 160 67090347 RevJ

User Manual

OWNER’S MANUALWPLS-160Wireless Portable Lift SystemImportant Safety InstructionsREAD THIS MANUAL CAREFULLYAND RETAIN FOR YOUR RECORDSUS Patent #6,634,461 & #7,014,012Canadian Patent Pending
iiTable of ContentsSignal Words ..................................................................................................................................iiReceiving Inspection...................................................................................................................... 1Introduction.................................................................................................................................... 1Owner and / or Operator Responsibilities............................................................................................. 1Specifications................................................................................................................................. 1Component Identification ............................................................................................................... 2Safety Instructions ......................................................................................................................... 3Operating Instructions.................................................................................................................... 5Using the WPLS Lift System to Raise a Vehicle................................................................................... 5Handle Operation................................................................................................................................. 8Charging the Battery ............................................................................................................................ 8Emergency Procedures........................................................................................................................ 9Channel Selector Switch on Control Box............................................................................................ 10Small Wheel Adapters........................................................................................................................ 12Maintenance Instructions............................................................................................................. 12Annual Maintenance Requirements ................................................................................................... 12Structural Inspection .......................................................................................................................... 13Adding Hydraulic Fluid ....................................................................................................................... 13Periodic Lubrication for Wear Pads.................................................................................................... 14Bleeding Air From Cylinder ................................................................................................................ 14Electrical Components ....................................................................................................................... 15FCC Part 15 Statements for User's Manual……………………………………………………………16Troubleshooting........................................................................................................................... 17Notes ........................................................................................................................................... 19ForewordThank you for your purchase. With Gray products, you take part in a long history of products engineered forthe transportation service industry. Company founder J. H. Gray applied for his first automotive jack patentin 1921, and since 1952 Gray has been producing the highest quality hydraulic and pneumatic equipmentavailable for the professional service technician. Our purpose is to provide you with quality equipment thatmakes your job easier and with exemplary service after the sale. Please call Gray's customer service, at 1-800-821-7320 or 816-233-6121, with any comments or questions.Signal WordsSignal words call attention to a safety message or messages, or a property damage messageor messages, and designates a degree or level of hazard seriousness. The signal words are“DANGER”, “WARNING”, “CAUTION”, and “NOTICE”.DANGER: Indicates a hazardous situation, which, if not avoided, will result in death orserious injury. This signal word is to be limited to the most extreme situations.WARNING: Indicates a hazardous situation, which, if not avoided, could result in death orserious injury.CAUTION: Indicates a hazardous situation, which, if not avoided, could result in minor ormoderate injury. It may be used to alert against unsafe practices.NOTICE: Indicates a property damage message.
1Receiving InspectionBefore attempting to operate these lifts, thoroughly read and understand this manual. Completely remove all tape andpackaging. Inspect each lift immediately upon delivery. If shipping damage is evident, inform the delivering carrierimmediately and contact customer service at the numbers and address printed on the back cover of this manual.IntroductionOwner and / or Operator ResponsibilitiesThe owner and / or user must have an understanding of the manufacturer’s operating instructions and warnings beforeusing these lifts. Personnel involved in the use and operation of equipment shall be careful, competent, trained, andqualified in the safe operation of the equipment and its proper use when servicing motor vehicles and their components.Warning information should be emphasized and understood.The owner / manager must make this manual available to all personnel using these lifts at your direction. They mustread and understand the contents of this manual. If the operator is illiterate or is not fluent in English, themanufacturer’s instructions and warnings shall be read to and discussed with the operator in a language the operatorunderstands by the purchaser / owner, making sure that the operator comprehends its contents and observes the properprocedures for use of these lifts.Owner and / or user must study and maintain for future reference the manufacturer’s instructions. Review the video tofamiliarize yourself with the features and benefits of Gray’s “Wireless” Portable Lifting System. Owner and / or userare responsible for keeping all warning labels and instruction manuals legible and intact. Replacement labels andliterature are available from the manufacturer.SpecificationsMax. Capacity per Unit 16,000 lbs (8 Tons) 7,258 kg.Max. Capacity per set of 4 64,000 lbs (32 Tons) 29,030 kg.Max. Capacity per set of 6 96,000 lbs (48 Tons) 43,545 kg.Min. Wheel Diameter (w/adapter) 14” 356 mmMaximum Wheel Diameter 24.5” 622 mmMaximum Lift Height 67” 1,702 mmLift Speeds (varies with load) 50”/minute 1,270 mm/minuteWeight per Column 1,360 lbs. 617 kg.Height 93” 2,362 mmHeight at full lift 148” 3,759 mmWidth 43” 1,092 mmLength 58” 1,473 mmTurning Radius 48” 1,219 mmOperating Voltage 12 VDC nominalOperating Peak Power 4 Hp 3.0 KWattsCharger Voltage Required 120 VAC @ 60 HzCharger Amperage Required 1.1 Amps
2Component IdentificationMajor Components And Cover LocationsLeftCoverLatchRightCoverLatchPower UnitDown Stop AssemblyHandle AssemblyBattery &Battery CaseMain On/Off SwitchOn-Board ChargerLiftCarriageHandleGripBattery Caseand BatteryDown StopAssembliesFrame BaseLinearSensorFrontCoverOpenDetentBar
3Safety InstructionsWARNINGTo avoid serious injury or death, read this manual carefully before operating this unit. Call customerservice at the numbers and address printed on the back cover of this manual if you have any questions.Failure to understand and obey safety instructions may result in unsafe or improper use of thisproduct.1. Use the Wireless Portable Lift System only on hard, level surfaces. Lifting on other than hardsurfaces with a slope of more than 3 degrees (5% grade) can result in lift instability andpossible loss of load.2. DO NOT raise / lower one side of a vehicle.3. DO NOT use the Wireless Portable Lift System to raise a vehicle by the frame or structuralmember. Only use the wheels of the vehicle to lift with the lift system.4. DO NOT raise one end of a vehicle if the opposite end is supported by stands.5. DO NOT use the Wireless Portable Lift System in conjunction with any other equipment usedto raise a vehicle.6. Lift only on same axle. Product is to be used only in sets of 2, 4 or 6 units, not as a single unit.7. DO NOT place feet or any part of body between lift frame base and carriage. Personnel injurycan occur.8. DO NOT place hands, other parts of body, or clothing between carriage slide pads and theupright rails the carriage slides on vertically. These are potential pinch points that can injuryhands and fingers or possible grab clothing that can cause personal injury.9. DO NOT use blocks, non-factory supplied adapters or cribbing devices with this lift.10. Maximum capacity is listed on the ID decal. Do not use the lift as a stand to support more thanmaximum capacity. DO NOT overload.11. DO NOT use the Wireless Portable Lift System as a wheel dolly for the removal of tires.12. No alterations shall be made to this product.13. NEVER stand under the load or vehicle when it is being lifted or lowered.14. NEVER stand either in or on the vehicle when it is being lifted or lowered.15. DO NOT use the hoisting equipment to reach a lifted vehicle or to reach any part of thevehicle.16. Keep both the material and the surrounding area clean.17. Before lowering a raised vehicle make sure there are no obstructions under the vehicle and thelift carriages of the Wireless Portable Lift System.18. Always keep the covers closed on the lifts.19. DO NOT attempt to move the load horizontally when the vehicle is raised on the WirelessPortable Lift System by any means.20. Whenever the lifted vehicle is propped up and the lifting units are removed, use only the standsintended for this purpose.21. It is recommended that proper stands be used when the vehicle will be left in the raised
4position for extended periods of time.22. Do not use lifts outdoors when wind speeds exceed 20 mph.23. NEVER start the vehicle motor when the vehicle is supported by the lifts or stands. Only startengine when vehicle is standing on the ground.24. Make sure there is adequate clearance above highest point of vehicle before lifting. Lift raises67”.25. NEVER use the battery and/or charger for any other purpose. NEVER use an unapprovedpower source other than the battery to power the lift.26. DO NOT expose the charger to rain or snow.27. To reduce risk of damage to electric plug and cord, pull by plug rather than cord whendisconnecting charger.28. NEVER smoke or allow an open spark or flame in the vicinity of the battery.29. Make sure cord is located so that it cannot be stepped on, tripped over, or otherwise subjectedto damage or stress.30. Use of an attachment not recommended or sold by the battery charger manufacturer may resultin a risk of fire, electrical shock or injury to persons.31. DO NOT operate the charger if it has received a sharp blow, been dropped, or otherwisedamaged in any way. Call the 800 customer service number on last page of manual.32. DO NOT disassemble the charger. If it is in need of repair call the 800 customer servicenumber on the last page of manual.33. To reduce risk of electrical shock, unplug the charger from an outlet before attempting anymaintenance or cleaning.34. NEVER charge a frozen battery.35. Be extra cautious to reduce the risk of dropping a metal tool onto the battery. It might spark orshort- circuit battery or other electrical part that may cause an explosion.36. Have plenty of fresh water & soap nearby in case battery acid contacts skin, clothing, or eyes.37. Wear complete eye protection and clothing protection. Avoid touching eyes while workingnear battery.38. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid entersan eye, immediately flood with cold running water for at least 10 minutes and get medicalattention.Failure to understand and obey these warnings may result in personal injury and / or property damage.SAVE THESE INSTRUCTIONS!
5Operating InstructionsUsing the WPLS Lift System to Raise a VehicleThis section discusses the appropriate and safe methods for using the WPLS Wireless Portable Lift System to raiseand lower a vehicle.Using the WPLS Lift System to raise a vehicle requires several steps that must befollowed each and every time the lift system is used:1. Inspect each lift for signs of wear or damage.2. Transport the lifts to the work area.3. Locate appropriate support stands, if needed.4. Prepare the surrounding area before using the lift system.5. Identify vehicle axles to lift, examine the tires, and prepare the vehicle.6. Raise the vehicle.7. Lower the vehicle to the Ground.Each of these steps is discussed in detail in the following sections. Failure to followall of these instructions can lead to serious injury or death.1. Inspect the Lift for Signs of Wear or DamageBefore each use, you should inspect the lift for any visible signs of wear or damage. See the “StructuralInspection” section for details about how to inspect the lift. WARNING! If you see any signs of wear or damage,or if there is any indication that the lift is not performing normally, immediately take it out of service and callcustomer service at 800-821-7320 or 816-233-6121. NEVER use a lift that appears damaged in any way.2. Transport the Lifts to the Work AreaTransport the lift to the work area by either (a) wheeling it or (b) lifting and transporting it using the providedforklift pockets. The lift can be wheeled to the work area over smooth surfaces and short distances—transport thelifts if traveling over longer distances and/or rough surfaces. WARNING! Jolting caused by the wheels catchingon uneven surfaces can cause physical strain and personal injury.See the “Handle Operation” section for details on how to properly maneuver the lift unit.3. Locate Appropriate Support Stands, if neededGray Manufacturing Company, Inc. recommends the use of appropriate support stands when the vehicle to belifted is to be left elevated for an extended amount of time. Gray Manufacturing Company, Inc. manufacturessupport stands that are made specifically for high rise supporting.WARNING
64. Prepare the Surrounding Area Before Using the Lift SystemIt is important that the surrounding area be prepared properly before raising a load.WARNING! Failure to follow all of these instructions can result in lift instability and loss of a load:a. Use the lift only on hard, level surfaces capable of safely supporting the load. A level surface isconsidered to be 3 degree slope (5% grade) or less.b. The base of each lift unit must have its footprint is in full contact with the floor.c. NEVER attempt to lift from an uneven surface where a lift unit could shift under load such a raisedseam in a concrete floor.d. Clear the surrounding area of personnel, tools, equipment and other material.If these conditions cannot be met, move the vehicle and lift system to an area where it can be lifted safely.5. Identify the Vehicle Axles to Lift, Examine the Tires, and Prepare the VehicleIt is important that the vehicle be in proper condition before raising it off the floor.a. Always position a pair of lift units on opposite tires of the same axle. The steering wheels should bepointing straight ahead. The vehicle's rims should be at least 19 ½” inches in diameter. For rims of14-19 inches in diameter, refer to the “Small Wheel Adapters” section.b. Check that the tires on the vehicle are properly inflated, in road worthy condition, andthe weight on any tire does not exceed the rated capacity of any lift unit. Be sure to consider theweight carried by unsupported axles (i.e. set of four lifting a tandem axle vehicle).c. Release the vehicle's parking or air brake and place the transmission in neutral.d. Ensure each lift unit is properly charged and the Battery Charger Indicator Light is Green before use.e. Position the Lift Units so the lift pads on the Carriage are cradling the tires evenly and parallel withthe hub. Push the lift pads under the tire until the Carriage cross tube contacts the tire. Release andstow handle assembly to be sure rear pivot wheels are off the ground.f. Turn Selector switch on the Control Box at first lift unit to SYNC position. Use Raise/Lower rockerswitch to select number of lifts to synchronize. Push the "Hold to RunTM" button to confirm selectionbefore moving to the next lift. See Figure 1.g. Turn on remaining lift units one-at-a-time by moving each Selector switch to SYNC and each unitshould identify themselves with Unit # on the first display line. When all are in SYNC, a "Ready toOperate" should be displayed on the second line and the Status Indicator light will be solid green.Figure 1EMERGENCYSTOPButtonSELECTORSwitch“HOLD to RUNTM"ButtonDisplay STATUSINDICATORLightRAISE/LOWERSwitch
76. Raise the Vehiclea. Position yourself at any one of the synchronized Lift Units. Be aware of any overhead obstructionabove the vehicle. Lift Units can raise the vehicle 67" from the floor. While operating, keep a safeminimum distance at all times between the vehicle and all overhead obstructions in order to preventdamage to the vehicle, the Lift System, and/or the building structure.b. When ready to lift, push and hold the "Hold-to-RunTM" button while moving the rocker switch toRaise position. See Figure 1. As Carriages raise vehicle, the Status Indicator will flash green. Thiswill be normal.c. Release both the "Hold-to-RunTM" button and the rocker switch when at the desired height.d. While working on the Vehicle, move the selector switch on each Lift Unit to the "Lock" position.This will inhibit unauthorized use of the lift system. The use of stands is recommended duringextended periods of time with the vehicle being elevated.WARNINGOne Control Box Selector switch must be turned to LOCK when left unattended in a raised position oreach turned to OFF when left unattended in the fully lowered position for an extended amount of time.Failure to do so could result in serious injury and/or property damage.7. Lowering the Vehicle to the GroundWARNING! To avoid serious injury or death, NEVER drive the vehicle off the lifts or attempt to move a vehicle thatis elevated by the lift system.a. Clear the work area under the vehicle of all personnel, tools, and shop equipment.b. Position yourself at any one of the synchronized Lift Units. Be aware of any obstructions underneaththe vehicle.c. If the system was set to the ‘Lock’ position, turn the Selector switch back to the ‘Sync” position andpress the “Hold-to-Run” button on each lift to reset the system.d. When ready to lower, push and hold the "Hold-to-RunTM" button while moving the rocker switch toLower. Be aware that the Lift Unit(s) may rise slightly before lowering to ensure all Down StopAssembles are retracted.e. Release both the "Hold-to-RunTM" button and the rocker switch when the vehicle is lowered to thefloor and the lift carriage has cleared contact with the tires. Green Status Indicator should becomesolid when all Carriages have reached stowed position.CAUTIONDo not turn the synchronized Lift Units "OFF" until vehicle is completely down, Carriage Armshave disengaged from the tires, and the Carriages are completely stowed.f. Place the transmission in gear (or park) and engage the brakes.g. Move the Lift Units away from the work area and recharge each Lift Unit after use.NOTICEWhen storing Lift Units, make sure that the Control Box selector switch is in the "OFF" position andplug in the charger.
8Handle OperationThe handle should be stored in the upright position when not moving the lift unit. To move the unit for positioning,lift up on detent bar while holding handle grips. Pull on handle and press down to raise lift while engaging the rearwheels with ground. There are two positions to lift the unit from the floor. Release the detent bar to engage the stopfor the height desired. The handle height when engaged to the stop is at approximately 39” or 36” above the ground.When the handle is engaged in one of these two positions, the unit can be maneuvered by rolling to the vehicle wheelto be cradled prior to set up on the Wireless Portable Lift System. When the lift unit is in place, push down on thehandle and raise the detent bar to disengage the stop. While holding both handles, slowly let the handle rise to clearthe wheels from the ground. Do not let the handle go after it is disengaged from the stop, possible personal injurycould occur. Lift the handle to store it in the upright position. Release the detent bar to engage the up stop. Neverleave the handle engaged with the wheels loaded on the ground, possible damage could occur to the handle assembly.The large rear wheels should always be clear of the ground prior to lifting the vehicle.Charging the BatteryThe on-board Charging unit is located behind the Left Cover. See Figure 2. Inspect the condition of the cord andplug and only use if in good condition. Unwind the power cord and insert the plug into a suitable 120 VAC 60 Hzpower source with matching plug style. Each charger should draw less than 2 Amps apiece so a 20 Amp circuitbreaker should easily be able to handle six units charging simultaneously on the same circuit branch. The factoryequipped battery is an AGM type and normally will not ‘gas’ when charging exclusively with the factory installedcharger.NOTICEAn Operator’s Manual from the charger manufacturer has been included in the information packet forthis lift system. Read operating and safety manuals before using charger.Save these supplemental instructions!WARNINGThere are no serviceable items inside on-board Charger.If the lift cannot be moved to a power outlet within reach of the 6 foot charger cord, a suitable extension cord can beused. See Table 1 below for proper selection. Always use a grounded cord set with matching plug styles. Beware ofadditional hazards associated with stringing extension cords on the floor such as tripping, crushing, electrocutionhazards as well as others.Table 1WARNINGDo not use the battery or charger as an energy sourcefor any other purpose. Figure 2Minimum Extension Cord SizeLength (ft.) 25 50 100Wire Size (AWG) 16 14 12Charger Rating: 120 VAC @ 60 Hz1.1 AmpsOn-BoardCharger
9Emergency ProceduresIn the event that the system must be stopped immediately, the WPLS system has provided an Emergency Stop buttonon each Control Box. It is red in color and simply needs to be pushed in on any Control Box to halt a vehicle lift thatmay be in progress. The normal emergency stop condition, or “E-Stop” message on the display, will communicatewith all controls synchronized in the system to halt all at once. After the situation is assessed, and it is determined thatit is safe to continue lifting or lowering, the emergency Stop button originally pushed in can be pulled back out and theHold-to-Run button pushed to reset the system. See Figure 1.In the unlikely event that the system would lose communication at the same time an Emergency Stop button is pressedand a lift is still moving, simply press the Emergency Stop button on the unit still moving. If this fails to stop the unit,open the left cover and turn the Master Switch to OFF. See Figure 2.Anytime the controls are found not to be functioning while a vehicle is already raised, the vehicle may be lowered tothe ground with the controls turned OFF using the following steps. Open the right hand cover by opening the LH latchfirst, then the RH latch.1. Turn all Control Boxes to the OFF position. See Figure 1.2. Station a person at each lift with all right side covers open.3. Each person must one at a time hold the Emergency Override Toggle down. See Figure 3. No motion shouldoccur yet. If there is, release all Override Toggles, then verify all Needle Valves are closed (CW).4. Each person slowly opens the Needle Valve located on Power Unit to begin decent while holding Toggle down.See Figure 4.5. Coordinate level Lowering by adjusting the Needle Valve: Counterclockwise is FASTER, Clockwise isSLOWER. Be sure to close all Needle Valves prior to next use.If one or more unit(s) do not move down initially, it may be resting on a Down Stop slot. Close the Needle Valve andslightly raise the carriage to clear the Down Stops. This is done by pushing in the Emergency Raise Push Button andlifting up on the Emergency override Toggle together. Then resume lowering.Figure 3 Figure 4EmergencyOverride ToggleEmergency RaisePush ButtonNeedle ValveFill Cap
10Channel Selector Switch on Control BoxFour Channel Selector Toggle switches are provided on each Control Box in order allow the Operator a choice overwhich frequency Channel the system is being set up on. There are 16 channels available which enables multiplesystems to work side-by-side within a facility but on different channels. This also enables a system that senses multiple“Signal Loss” faults to conveniently move to another Channel for clearer communications. Use the followingguidelines to properly use this feature.WARNINGTurn control box selector switch to OFF position before changing Channel Selector Toggle positions.Failure to do so will prevent change from properly taking place and communication problems will exist.1. Ensure all lifts are lowered and in stowed position.2. Open Right Hand cover where the Control Box is located.3. Ensure the Control Box Selector switch is in the OFF position.4. Move any Toggle switch to a new position. See Figure 5. Reference Table 2 for Channel Selector Togglepatterns. A Toggle pointing away from the Operator is considered ON; pointing towards the Operator is OFF.5. Turn the Control Box Selector switch to SYNC position and proceed with the startup procedure.6. Repeat for each additional Lift Unit to complete the Lift System. Be sure that the Toggle Switch pattern isidentical for each Lift Unit.WARNINGTurn control box selector switch to the OFF position after each use. Failure to do so could result inserious injury and/or property damage.When using the WPLS-160 units in multiple systems to raise more than one vehicle, it is a good safety practice to turneach control box off before moving the units under another vehicle. Since these systems can be configured in sets of 2,4, or 6 units it is important to ensure the system knows exactly how many units are intended to be synchronizedtogether. When using these units to lift multiple vehicles, never use the same channel in the same location. Always useseparate channels when lifting separate vehicles.WARNINGDo not attempt to lift more than one vehicle with one system. Do not attempt to lift one vehicle withunits synchronized into two or more different systems. Always synchronize one system per vehicle.The WPLS-160 wireless feature complies with part 90 of the FCC Rules. The operation of these are registration-freeand there are no licensing requirements for the end user.The controls on these Lift Units are equipped with a "SLEEP" mode. If the display back lighting is off while in theSYNC or LOCK mode, push the "Hold-to-Run TM" button to brighten control display. This feature does not interferewith the system’s operation.WARNINGThere are no serviceable items inside Control Box.
11Figure 5Table 2: Channel Selector Switch ChartRF TOGGLE POSITIONChannel 3 4 5 61 ON ON ON ON2OFF ON ON ON3 ON OFF ON ON4OFF OFF ON ON5 ON ON OFF ON6OFF ON OFF ON7 ON OFF OFF ON8OFF OFF OFF ON9 ON ON ON OFF10 OFF ON ON OFF11 ON OFF ON OFF12 OFF OFF ON OFF13 ON ON OFF OFF14 OFF ON OFF OFF15 ON OFF OFF OFF16 OFF OFF OFF OFFSerial NumberLocationSELECTORSwitchChannel Selector TogglesDisplay
12Small Wheel AdaptersWARNINGThe small wheel adapters should be used for wheel from 14” to 19” only. DO NOT overload whenusing this adapter. Failure to heed this warning may result in personal injury and/or property damage.The optional wheel adapters are located on each side of the carriage, see Figure 6. Secure adapters by insertinghooks into top row of grip holes and then resting them on the carriage arm in the working position. See Figure 7.When lifting a vehicle with 14” to 16” wheels, use both of the wheel adapters. If you are lifting a vehicle with 17”to 19” wheels, use only one of the wheel adapters. Remember to release the emergency brake and put the vehicle inneutral prior to lifting.Figure 6 Figure 7Maintenance InstructionsWARNINGAll inspection and maintenance procedures must be performed after the lift system has been removedfrom service. Failure to heed this warning may result in personal and / or property damage.NOTICEThe owner must inspect, or appoint a knowledgeable person to inspect the lifts. Visual inspectionshould be made before each use of lifts, checking for abnormal conditions. Regular inspections shouldbe made weekly for daily use and monthly for intermittent use. Each lift must be inspected immediatelyif subjected to an abnormal load or shock. Any lift which appears to be damaged in any way, is found tobe badly worn, or operates abnormally shall be removed from service until necessary repairs are made.Annual Maintenance Requirements1. Check oil level in the oil reservoir. Refer to the “Adding Hydraulic Fluid” section.2. All warning and capacity labels should be readable and complete. Wash external surfaces of lift, labels, anddecals with a mild soap solution.3. Lubricate rails of the lift that slide pads slide on with a dry film PTFE type lubricant as needed ifchatter/vibration develops. Refer to the “Periodic Lubrication for Wear Pads” section.4. Inspect Battery Terminals connections to make sure they are clean and residue free.StoredLocationWorkingPositionInsert HookInto Holes
13Structural InspectionWARNINGThe lift must be removed from service and inspected for damage immediately if the lift is subjected toan abnormal shock or load. Failure to heed this warning may result in personal and/or property damage.NOTICEThe owner must inspect, or appoint a knowledgeable person to inspect the lift for signs of corrosion and/ or excessive wear. Visual inspection should be made before each use of lift, checking for abnormalconditions. Regular inspections should be made weekly for daily use and monthly for intermittent use.Each lift must be inspected immediately if subjected to an abnormal load or shock. Any lift whichappears to be damaged in any way, is found to be badly worn, or operates abnormally shall be removedfrom service until necessary repairs are made.1. Inspect lifts regularly and remove from service if it is cracked, chipped or shows signs of excessive wear.2. The lifts should raise and lower smoothly through its full range. Inspect the lift frame rails for damage such asgouging. If lift stutters when lowering (jerky) the rails may need to be re-lubricated. Refer to the “PeriodicLubrication for Wear Pads” section.3. All controls should operate freely. Inspect for oil leaks. If oil leaks occur, investigate and correct the source ofthe leakage. Then refer to the “Adding Hydraulic Fluid” section of this manual.4. Check that all Grade #8 fasteners are tight and properly wire-tied together.CAUTIONClean up any oil leakage immediately. Oil left on a floor can be a slipping hazard.If any irregularities or problems are detected during an inspection, the lifts must be removed from service immediatelyand repaired. Contact customer service at the numbers printed on the back of this manual.Adding Hydraulic FluidThe hydraulic reservior is located on the Power Unit mounted directly below the Control Box.1. Remove the lift unit from service.2. The carriage must be in the fully lowered position and the lift unit must be on a level surface.3. Open the right hand cover by releasing the LH Latch first, then the RH Latch.4. Clean around the surface of the oil fill plug to prevent contamination of the hydraulic oil system.5. Remove the oil fill plug. See Figure 4. Visually check the hydraulic oil level. The fluid should be visible andjust covering the dipstick. If the fluid level is low, add a high-grade hydraulic fluid equivalent to Tellus T22 sothe oil level just covers the dipstick. Allow at least a 1” air gap for fluid expansion.CAUTIONDo not use brake or transmission fluid. Use of the wrong fluid can deteriorate the seals and corrosionproblems will occur.6. Re-install the oil fill plug. Clean up any spilled oil and secure the right hand cover back onto the frame. Testthe lift for normal operation.If the carriage doesn’t rise to full height before pump cavitates, check for air in the system. See “Bleeding Air fromCylinder.” If this doesn’t solve the problem, call customer service at the numbers printed on the back of this manual.
14Periodic Lubrication for Wear PadsThe WPLS is designed with pre-lubricated Wear Pads to transfer the load from the moving Carriage to the stationary Column.This design will provide a long service life before any replacement is needed.In addition, all 2005 units and later, have the Column Rails prepared with an extreme pressure coating at the factory instead of thestandard paint. This coating is made with a Moly Disulfite compound and eliminates the possibility of paint flaking. During theproduction of the WPLS lift, a dry film lubricant is sprayed on the Rails and used to assist the Wear Pads during their ‘break-in’period. This lubricant is a PTFE based product that sprays on dry and stays dry. A dry film lubricant will not attract dirt or otherair born particles that could be harmful to the Wear Pads.During everyday use, the WPLS may require periodic re-lubrication to continue smooth operation. A chatter noise or vibrationsound may indicate the need to re-lubricate with the following list of Recommended Dry Film Lubricants. Do not use Silicon orGraphite based products! In some environments, this re-lubrication could occur even monthly. If further assistance is needed,call Gray Customer Service for further instructions.The following products have been used with success:Recommended Dry Film Lubricants*Source P/N DescriptionGrainger 4KK82 LPS® Dry Film PTFE (12 oz. aerosol)Gunk L512 Liquid Wrench® Dry Lubricant (11 oz. aerosol)Sherwin-Williams S00311 Sprayon™Dry Film P.T.F.E. (12 oz. aerosol)*not intended to be an all-inclusive list.Lubrication Instructions1. With Carriage stowed, wipe down three sides of each Rail (Front, Back, and Side) with a clean, dry cloth or towel.2. Spray three sides of each Column Rail with a thin even coat of PTFE from the recommended list. See Figure 1.3. Raise Carriage 2 to 3 feet and repeat for lower portion of each Column.. Lower Carriage to stowed positionFigure 1Bleeding Air From CylinderIf Carriage is spongy or jumpy when either raising or lowering with no load on the carriage, there is most likely airtrapped in the cylinder. In order to remove the trapped air do the following:1. Turn the control box to the OFF position.2. Open the right hand side cover by releasing the LH Latch first, then the RH Latch.3. Raise the carriage lift up by pushing the Emergency Override Toggle in the up direction and pushing in on theEmergency Raise Push Button. See Figure 3. Raise the carriage approximately two feet off the ground.4. Position a ladder behind the lift so you can reach the top of the cylinder. With a 3/16” allen wrench and a rag,slightly open the vent screw in the top on the cylinder, see Figure 8, while surrounding the port with a cleanCarriageColumnRailWear Pad
15rag. You can hear the air escaping. This might take a little time depending on the amount of air trapped in thecylinder.5. When oil starts to escape past the vent screw, retighten the vent screw. The air will now be purged from thesystem. Clean up any oil residue that escapes from the cylinder.6. When you get down from the ladder, lower the carriage by following the “Emergency Lowering Procedure”.7. To make sure that no additional air will get into the system, the oil level in the hydraulic reservior should bechecked to ensure the unit has a proper oil level in the reservior. To do this, follow the “Adding HydraulicFluid” procedure listed in the owner’s manual.Figure 8Electrical ComponentsThe electrical system is powered by a 12 VDC battery capable of discharging up to 260 Amps to raise Rated Load.This electrical system does not need any routine maintenance, but there are several circuit protectors to be aware of.WARNINGAlways disconnect the battery from the system before changing fuses. Failure to heed this warning mayresult in personal and/or property damage.A. Battery Charger is protected from a battery short circuit by a 30 Amp glass type in-line fuse located near thebattery terminals (See Figure 9, Item A).B. DC Power Unit motor is protected by a 300 Amp ANL type fuse located inside Left Cover mounted to a blockwith clear Plexiglas cover (See Figure 10, Item B).C. Down Stop Assembly circuit is protected by a 15 Amp blade type which is located to the left of the fuse block(See Figure 10, Item C). It will have a red colored lead wire.D. Control Box is protected by a 7.5 Amp blade type in-line fuse which is located just under the Main On/Offswitch (See Figure 10, Item D).E. Down Stop Limit Switch signal to Control Box is protected by a 3 Amp in-line fuse which is located to the leftof the fuse block (See Figure 10, Item E).All Blade type fuses are clearly marked when opening protective caps.NOTICEAlways replace fuse protective caps or covers after inspection of the fuse.CAUTIONAlways replace a blown fuse with the same size and type. An improper replacement could damage theequipment.Vent Screw
16Figure 9 (Battery Cover removed for clarity) Figure 10FCC PART 15 STATEMENTS FOR USER”S MANUALTHIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THEFOLLOWING TWO CONDITIONS.(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUSTACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSEUNDESIRED OPERATION.Warning: Changes or modifications not expressly approved by the party responsible forcompliance could void the user’s authority to operate this equipment.Note: This equipment has been tested and found to comply with the limits for a Class Bdigitaldevice, pursuant to part 15 of the FCC Rules. These limits are designed to providereasonable protection against harmful interference in a residential installation. Thisequipmentgenerates, uses and can radiate radio frequency energy and, if not installed and used inaccordance with the instructions, may cause harmful interference to radio communications.However, there is no guarantee that interference will not occur in a particular installation. Ifthis equipment does cause harmful interference to radio or television reception, which can bedetermined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following measures:—Reorient or relocate the receiving antenna.—Increase the separation between the equipment and receiver.—Connect the equipment into an outlet on a circuit different from that to which thereceiver isconnected.—Consult the dealer or an experienced radio/TV technician for help.CEBDA
17TroubleshootingThis page is a list of preprogrammed faults and possible solutions. This list of faults is also listed on a label located onthe inside of the LH Cover. If the solution listed fails to correct the problem, call customer service at the numbers andaddress printed on the back cover of this manual. Please have the model number, and serial number of your lift unitavailable. The serial number is permanently stamped to the rear of the right base tube cover plate. The serial numberof the control box is on the right hand side panel. It can be seen without opening the right hand cover.ControlPanelMessages Meaning Possible Solutions*“RechargeNeeded”Energy Level on one or more Lift(s) has dropped below desiredminimum – please recharge before next lift.Lift Unit(s) has flashing Red Status Indicator.Further use without recharge could shorten battery life.Plug in On-Board Charger.“Max. AllowedLift Height”Lift System has reached the maximum height allowed for thepresent configuration of lifts.All Lift Units have flashing Green Status Indicator.Using only two Lift Units will raise 30” maximum.Lift System may be lowered from thisheight.“Low Battery”Energy Level on one or more Lift Unit(s) has dropped to apoint where further lifting will damage Battery. However,vehicle can be lowered.Lift Unit(s) has flashing Red Status Indicator.Identified Lift Unit(s) must be recharged (or swapped to sparebattery) before further lifting can take place.Note: If backup Battery is used to finish lift operation, properlycharge or replace Lift Unit Battery and reconnect to System PowerCable.1. Plug in on-board charger, if 110 VAC isavailable.2. If not available:oLocate spare 12 VDC Battery.oLocate supplied Jumper Cables.oTurn all Controls to OFF position.oDisconnect System Power Cable.oConnect Jumper Cables to sparebattery terminals.oConnect Jumper Cables to SystemPower Cable.oRe-synchronize system to continue.“Signal Loss”Communication from one or more Lift Unit(s) was lost.Lift Unit(s) has flashing Red Status Indicator.Can be caused by outside RF interferences and is considerednormal.Communication link needs to be reestablished.1. Verify Lift Unit(s) control is in theSYNC position, then press “Hold-to-Run” switch.2. If not, select SYNC and verify heightposition. Then, press “Hold-to-Run”switch at each Control to reestablishcommunication.3. If “Signal Loss” continues to reoccur,turn all Controls to OFF, select anotherfrequency several channels away, and re-synchronize the system.“FeedbackLoop”Carriage position on one or more Lift Unit(s) is not respondingproperly to Control commands.Lift Unit(s) has flashing Red Status Indicator.Carriage speed does not match Control Box output.1. Press “Hold-to-Run” switch to continue.2. If reoccurs, verify no obstructions withLift Carriage.3. If no obstructions, check operation ofLinear Sensor.“Out-of-Sync”Lift Units heights are not within acceptable synchronizationrange.All Lift Units have flashing Red Status Indicator.All Lift Units must be within 3” of each other to operate.1. Press “Hold to Run” switch to clearfault.2. Operate Lift System in the oppositedirection temporarily to re-synchronize.3. If unable to re-synchronize, useEmergency Lowering Procedure andre-sync at ground level.“E-Stop”Red Emergency Stop button has been pushed IN on one or 1. Determine cause of activation.
18more Lift Unit(s).Lift Unit(s) has flashing Red Status Indicator.All Red Emergency Stop buttons must be OUT to operate.2. Rectify condition and verify ready tooperate.3. Reset Emergency Stop Button and push“Hold-to-Run” switch to continue.“Too Many toLift, …”Number of Lift Units in SYNC is more than the Operatorinputted during set up.Last Lift Unit in SYNC has flashing Red Status Indicator.Another System is already operating on that RF channel.Number of Lift Units set to SYNC must equal the Numberinputted during set up.1. Find all Lift Unit(s) not intended to beused on current vehicle.2. If other Units are being used on anothervehicle, switch channels and re-synchronize.3. If other Units are to be idle, verify allControls are OFF before synchronizingcurrent system.“Too Few toLift”Number of Lift Units in SYNC is less than the Operatorinputted during set up.Operated Unit will have flashing Red Status Indicator.Number of Lift Units set to SYNC must equal the Numberinputted during set up.1. Push Hold-to-Run switch to clear faultmessage.2. Find all Lift Unit(s) that are intended tobe used and verify the Controls are in theSYNC position.3. If all are in SYNC, turn all OFF andrestart. Ensure proper Number of lifts isinputted when prompted.“Down StopError”At least one Lift Unit has Stop Blocks not completely retractedto allow lowering of vehicle.Lift Unit(s) has flashing Red Status Indicator.All Stop Blocks must be completely retracted before LiftSystem will allow vehicle to Lower.Call Technical Service for assistance.
19Notes
Gray Manufacturing Company, Inc.3501 S. Leonard Road, P.O. Box 728St. Joseph, Missouri 64502Customer Service Hotline800-821-7320 or 816-233-6121Fax 816-233-7251www.grayusa.comEMAIL- gray@grayusa.comPrinted in U.S.A.© 2006 Gray Manufacturing Compnay, Inc..P.N. 0-670-90347 Rev. J DN121708

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