Pneumatic Scissor Lift Installation & Service Manual
Contents
1. NOILVOO1TOHLNOO HO LINN HIMOd OL Lld NOHI NN SITAYO HO ISOH HOS 3SVHO Jdid 4 OL SM08913 dIIMS SNIGVY ONOT HLIM DAd VIA E NNY OLI SINONV ONI did LINGNOO TONI SHIHLO AS AYOM Lid TIV 1 SILON SHIHLO AS LINN HIMOd 3LOW3H SISOH HO LIND HIMOd 93 8 HOS SSIDIH JAIM 2 1 EX 334 v ASVHO Adld dO dOLOL Lid 40 40074 WOH XVI Z L 6 JO SWIYS JO L snidqubiey 41T HLdaa Lld SHSHLO AS 1 ASVHO AlddNS HIMOS daHaMol WHOA IVA SHAHLO AS 9319 ENO lt L HIONITINHOA LV 1d HIONIT 14 HLONITNYOALVId HLOIM NYOALYVId HLOIM Lld PIT LAYOUT DRAWING 5 1 b HLOIM WHOSLW Id suayjo Aq paunbal ureap 10 pue duns SY3HLO AQ 9319 OPERATING INSTRUCTIONS i METHOD OF OPERATION The control valve controls the flow of air to the air actuator As the actuator is pressurized the scissor legs are forced apart causing the table top to rise As air is released from the bag the legs collapse and the top is lowered CAUTION Do Not maintain the control valve in the open position if the lift does not move or it has reached its up or down limits Damage to the pneumatic system may result Connect clean dry shop air minimum 80 psi maximum 100 psi 15 cfm to the open port on the pedestal mounted control valve Test all air connections for leaks and repair as requ2. Pneumatic Scissor Lift Installation amp Service Manual Model Serial G shared Ed DoNotRemove StdManuals ScissorLifts PneumaticScissLift1 2 02 CONTENTS Responsibilities of Owners and Users Warnings Safety Labels Scissor Lift Installation Instructions Installation Instructions Pit Mounted Pit Layout Drawing Operating Instructions General Information Maintenance Instructions Pneumatic Schematic Trouble Shooting RESPONSIBILITIES OF OWNERS amp USERS Inspection and Maintenance The lift shall be inspected and maintained in proper working order in accordance with this manual and safe operating practices Removal From Service Any lift not in safe operating condition shall be removed from service until it is repaired to the original manufacturer s standards Repairs All repairs shall be made by authorized personnel in conformance with the manufacturer s instructions Operators Only trained and authorized personnel shall be permitted to operate the lift They must understand to be alert to safety hazards during all operations Before Operation Before using the lift the operator shall have 1 Read and understood the manufacturer s operating instructions and safety rules and been trained by a qualified person 2 Inspected the lift for proper operation and condition Any suspect item shall be carefully examined and a determination made by a qualified person as to whether it co
3. AND GUARDING PRIOR TO EQUIPMENT START UP SAFETY LABELS SCISSOR LIFT Do not put Do not work Do not hands or ied ni stand sit wi i To avoid bodily injury dh under ue on read all instructions i device 5 before operating or servicing lift 113611 A 4 6 7 8 x 1 1 4 or B 4 17 x 2 Placed on the side edges of the lift table platform to warn personnel to read operating instructions before using lift table and to warn of possible bodily injury hazards s WARNING Do not stand sit or ride on lift 113609 A 1 6 7 8 x 1 1 4 or B 1 8 x 2 Placed on the top surface of the lift table platform to warn personnel against riding on scissor lifts that are not designed for such use A DANGER Do no work under lift without maintenance device 113608 A 3 6 7 8 x 1 1 4 or B 3 8 x 2 Placed on the base frame adjacent to each maintenance device to warn service personnel to engage maintenance device before working on and particularly under lift table A DANGER To avoid bodily injury stand clear while lift table is moving 113610 A 5 6 7 8 x 1 1 4 B 5 8 x 2 A 6 2x 1 12 Place on or near the control station where up down controls are located to warn personnel to stand clear while lift table is in operation Location can vary depending on type of control station used INSTALLATION INSTRUCTIONS Anchored Pneumatic Scissor Lift Tables NOTE Check your local codes before permaneni
4. UBLE SHOOTING MAINTENANCE LIFT MOVING SLOWLY OR NOT AT ALL Check for obstructions Check for incoming air supply Check circuit for air leaks loose connection damaged hose etc Listen for air escaping Is lift overloaded Check capacity Check hand control valve and regulator for sticking or jamming repair or replace SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP
5. anchor clips Where anchor clips have been provided the bolt fit is close to restrict shifting Careful location of the anchor bolts is required with special consideration being given to the frame and platform The control pedestal is connected to the lift via an air hose at the factory Locate the pedestal at a convenient location and lag to the floor Instruct user s in the proper operation of the lift safety precautions and equipment capacity Supply maintenance personnel with this service manual Figure 1 STABLE MOVABLE GROUT UNDER SIDE CHANNELS SHIM INSTALLATION OF ANCHORBOLTS SMS 1 Position lift according to above instructions Drill holes in concrete the same diameter as anchor bolts using anchor clip holes as guides Drill holes sufficiently deep With nut and washer on anchor bolts drive anchor bolts into holes so that a minimum of six to seven threads are below the top of the anchor clips Tighten the nuts while making sure enough force is used to spread anchor bolt wedges Use three or four turns past finger tightening as a guide After the scissor lift has been aligned leveled and shimmed and all anchor bolts installed pour 1 in of grout under the entire base frame Tighten nuts or anchor bolts after the grout has set and cured Run pneumatic hose or electrical cord through the conduit in the pit wall Replace the platform See Pit Layout Drawing
6. ions The service life of a bushing is generally not predictable since their failure will develop only as gradual wear not as catastrophic failure such as with a bearing The need for inspection is largely proportional to the actual duty cycle environment and application It is recommended that the bushings be inspected for wear at least once a week during the first few months of operation It is likely that such frequent attention will prove unnecessary but will result in establishing a realistic maintenance schedule based on experience Replace bushings as necessary Failure to do so will damage the scissor arms It is also recommended that the bushings be inspected following a lengthy period of shutdown in severe environments SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP PNEUMATIC SCHEMATIC AIR ACTUATOR QUANTITY DETERMINED BY LOAD CAPACITY i VALVE SHOWN OR OPTIONAL FOOT PEDAL MUFFLER a TROUBLE SHOOTING mn WARNING To avoid personal injury never go under the lift platform until the load is removed and the scissor mechanism is securely blocked in the up position to prevent accidental lowering of the lift Air flow to cylinder must be locked tagged out For all pneumatic equipment air pressure must be relieved before any maintenance or service is performed TRO
7. ired To lift the unit activate the hand control valve to the up position Hold the valve open until the desired height is reached or until the lift reaches it s positive up stops Release the valve The lift will remain at this position until the hand valve is activated again Lower the lift by activating the hand valve to the down position Hold the valve open until the desired height is reached or until the lift reaches it s fully lowered position Release the valve CAUTION A Do not operate the lift until it is fastened to the floor see Installation Instructions B Do not exceed the rated load capacity C Load the lift only in the fully lowered position D Do not place hands or feet underneath the skirts or table tilt tops 4 FLOW CONTROL LEVER o FLOW CONTROL VALVE CONTROL PEDESTAL GENERAL INFORMATION GENERAL INFORMATION End and Side Loading Reduce the lift end and side placing capacities by 2 for every inch added to the standard minimum platform length or width Reduce the lift end or side loading capacities by 33 if loads are going to be rolled onto the platform when the lift is other than fully lowered Technical Speed and capacity on an air spring actuated lift are affected by plant air pressure PSI and standard cubic feet minute SCFM SCFM is a function of compressor capacity Plant air pressure is normally 100 PSI while standard cubic feet minute should have 15 SCFM capabilities a
8. lems or some of them may get very severe very quickly Inspect the equipment on a regular schedule preferably monthly Never work on the air systems unless the unit is fully lowered or properly sitting on a safety support Never apply a load to the equipment unless the base is continuously supported Oversize platforms can have a considerable overhang of the platform clevis pins and as the platform is hinged on one end and free at the other this may create a teeter totter In addition to the normal end load derating of 2 per additional platform inch care should be taken not to overload the clevis end of the platform to the extent that the opposite roller end of the platform is able to tilt upward possibly spilling the load Never expect to hold a leg assembly by simply lifting one end of a platform A The roller end of most lifts is not gibbed or captured in any way so lifting on the roller end simply tilts the platform B Even if you raise the clevis end of the platform if the base frame is not firmly lagged to the ground or held down by some other means the legs will come up with the platform ina spongy and unpredictable manner and could cause personal injury C The only safe way to hold a lift s legs open other than the factory designed safety support is to block between the clevis end of the platform and the base frame The routine maintenance of this equipment is minor and consists of periodic checks The equipme
9. ll holes sufficiently deep VVith nut and vvasher on anchor bolts drive anchor bolts into holes so that a minimum of six to seven threads are belovv the top of the anchor clips Tighten the nuts while making sure enough force is used to spread anchor bolt wedges Use three or four turns past finger tightening as a guide After the scissor lift has been aligned leveled and shimmed and all anchor bolts installed pour 1 in of grout under the entire base frame Tighten nuts or anchor bolts after the grout has set and cured Figure 2 INSTALLATION INSTRUCTIONS Anchored Pit Mounted Pneumatic Scissor Lift Tables NOTE Check your local codes before permanently installing pneumatic scissor lift tables as the process may be subject to local codes rules and regulations permits or inspections 1 Scissor lifts are shipped on either skids or pallets With slings placed around the base frame or lift bottom remove the lift from the skid Be careful not to damage any of the frame structure If equipped with lifting tabs tandem lifts or pit mounted lifts attach a chain spreader and raise the lift from a center position Level the scissor lift and place solid shims under the frame base as detailed in the drawing below Grout as required If shimming and grout will not be used the floor must be level within 1 8 in over 5 ft of length and width Removal of the lift top may be required to access the
10. ly installing pneumatic scissor lift tables as the process may be subject to local codes rules and regulations permits or inspections Scissor lifts are shipped on either skids or pallets With slings placed around the base frame or lift bottom remove the lift from the skid Be careful not to damage any of the frame structure If equipped with lifting tabs tandem lifts or pit mounted lifts attach a chain spreader and raise the lift from a center position Level the scissor lift and place solid shims under the frame base as detailed in the drawing below Grout as required If shimming and grout will not be used the floor must be level within 1 8 in over 5 ft of length and width Where anchor clips have been provided the bolt fit is close to restrict shifting Careful location of the anchor bolts is required with special consideration being given to the frame and platform The control pedestal is connected to the lift via an air hose at the factory Locate the pedestal at a convenient location and lag to the floor Instruct user s in the proper operation of the lift safety precautions and equipment capacity Supply maintenance personnel with this service manual Figure 1 STABLE MOVABLE ENDS GROUT UNDER SIDE CHANNELS INSTALLATION OF ANCHOR BOLTS SMS 1 Position lift according to above instructions Drill holes in concrete the same diameter as anchor bolts using anchor clip holes as guides Dri
11. nd clear of scissor leg mechanism while lift is in motion WARNING Where it is desired to raise the base of the lift to achieve a greater collapsed height the footprint of the base frame must be fully supported Failure to do so will damage the lift This lift was designed to be a floor mount WARNING DO NOT install lifts in pits unless they have bevel toe guards or other approved toe protection A shear point can exist causing serious toe injury or severance Safety Maintenance Bar Procedure WARNING ALWAYS use the safety bars for any service or maintenance NEVER go under or reach under the lift unless both safety bars are securely in place and the power to the unit has been disconnected to prevent others from operating the lift NEVER use the safety bars with a load on the platform CAUTION Never use the lift unless the safety bars are properly stored or damage may occur to the equipment 1 Remove the safety bars from their storage position 2 Raise the lift to full travel and place the safety bar Make sure the safety bar is in place 3 Once BOTH safety bars are in place slowly lower the lift until the safety bars rest against the end of the baseframe Visually inspect both safety bars to insure they are secure 4 To disengage the safety bars raise the lift to move the safety bars and make sure lift operates correctly Store the safety bars in the original position SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS
12. nstitutes a safety hazard All unsafe items shall be corrected before further use of the lift During Operation The lift shall be used only in accordance with its intended use and within the manufacturer s limitations and safety rules 1 Do not overload the lift Please note that the lift has a capacity tag attached to it Do not remove the tag Be sure that no operator ever exceeds the capacities shown on the tag or they may cause damage to the lift or injure personnel 2 Insure that all safety devices are operational and in place 3 Insure that all personnel near operating lifts understand to stand back from operating lifts so that no body parts can be pinched by the mechanism or platform and any items that may fall off the lift will not strike them Modifications or Alterations Modifications or alterations of industrial scissor lifts shall be made in conformance with all applicable provisions of scissor lift manufacturer s proposed ANSI standards and shall be at least as safe as the equipment was before modification These changes shall also satisfy recommendations of the original equipment manufacturer for the particular application of the lift WARNINGS WARNING NORIDERS WARNING To avoid personal injury never go under the lift platform until the load is removed and the scissor mechanism is securely blocked in the UP position to prevent accidental lowering of the lift WARNING To avoid personal injury sta
13. nt has been designed to safely provide many years of service if properly used and maintained SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP m MAINTENANCE INSTRUCTIONS MAINTENANCE SCHEDULE WARNING To avoid personal injury never go under the lift platform until the load is removed and the scissor mechanism is securely blocked in the up position to prevent accidental lowering of the lift Air flow to cylinder must be locked tagged out For all pneumatic equipment air pressure must be relieved before any maintenance or service is performed WEEKLY 40 hrs Inspect bushings for wear Replace if necessary See Bushing Maintenance and Lubrication Instructions below With the lift unloaded and in it s fully raised position check the pneumatic system for leaks a Check all fittings lines and components for escaping air b In addition to listening for an audible hissing perform a soap bubble test c If a leak exists repair immediately The following checks should be performed with safety chocks in place Check Air Actuator for any signs of wear chafing nicks splits etc Replace if necessary Check rollers for signs of wear Replace if damaged Clear roller track of any debris Tighten all visible nuts and bolts Bearings on all lifts are permanently lubricated and do not require servic ing Bushing Maintenance and Lubrication Instruct
14. pprox 4 HP air compressor minimum Increasing SCFM will increase lift speed Increasing PSI will increase capacity and or lift speed Know the capacity of your equipment Center your load on the lift at all times The equipment design is for balanced centered loads If field additions are made to the lift reduce the capacity of the unit by the equipment added MAINTENANCE INSTRUCTIONS a GENERAL MAINTENANCE NOTES 1 Always remember that this is a piece of machinery with large moving parts that can seriously hurt you Read and understand this manual before attempting any maintenance on the lifts Always use safety maintenance bars when servicing or inspecting any pneumatic lift After the safety bars are in place remove the system air pressure by using the control lever Never reach under a lift unless it is properly shored or blocked When using the safety supports adhere to the following rules A Be sure there is no load on the platform B Be sure the safety support is properly engaged C Hold the down pedal an extra 10 seconds when lowering onto the safety support to be sure that all the weight of the lift is on the support D Disconnect and tag the unit to prevent accidental movement of the lift by other personnel E Spend as little time as possible under the lift Use only replacement parts recommended by the manufacturer Do not let the equipment stay in disrepair fix little problems while they are little prob
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