Scissor Lift Technical Handbook
Contents
1. 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 WARNING To avoid personal injury stand clear of scissor leg mechanism while lift is in motion WARNING Where it is desired to raise the base of the lift to achieve greater collapsed height the footprint of the base frame must be fully supported Failure to do so will damage the lift This lift is designed to be a floor mount WARNING DO NOT install lifts in pits unless equipped with bevel toe guards or other approved toe protection shear point can exist causing serious toe injury or severance SAFETY MAINTENANCE BAR PROCEDURE WARNING ALWAYS use the safety bars for 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 NEVER use safety bars with load on the platform CAUTION Operating the lift with safety bars improperly stored may result in damage 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 base frame Visually inspect both safety bars to ensure they are secure 4 To disengage the safety bars raise the lift move t2. SCISSOR LIFT TECH HANDBOOK HYDRAULIC SCHEMATIC SHOP AID SERIES SCISSOR LIFTS ONLY PUMP ASSEMBLY CONTAINS CHECK LIFT CYLINDER S RELIEF AND DOWN SOLENOID VALVES QUANTITY VARIES CHECK VALVE DE es FLOW CONTROL RELIEF ME SUCTION FILTER RESERVOIR 28 SCISSOR LIFT TECH HANDBOOK HYDRAULIC SCHEMATIC POWER UP POWER DOWN SCHEMATIC POWER UP DOWN HYDRAULIC SCHEMATIC CONTROLLED FLOW SUCTION FILTER 44 29 SCISSOR LIFT TECH HANDBOOK HYDRAULIC SCHEMATIC PUMP AND DOWN VALVE Ps GASKET RELIEF VALVE CAP RETAINER RING RELIEF VALVE ADJUSTING SCREW CHECK VALVE CAP CHECK VALVE SPRING CHECK VALVE BALL RING OUTER SPRING JJ INNER SPRING RELIEF VALVE DOWN VALVE PLUNGER DOWN VALVE SOLENOID NUT 30 SCISSOR LIFT TECH HANDBOOK PARTS LISTS SCISSOR LIFT SCISSOR LIFT TECH HANDBOOK PARTS LISTS SCISSOR LIFT Ts T DESCRIPTION BUSHING 6 CAMFOLOWER 2 CLEVIPINRODEND 8 BREATHERVENT 2 CARRIAGEBOT gt 9 ROWCONRRO 23 NYLOCKNUT _ 14 HYDRAULIC CYLINDER mm 32 SCISSOR LIFT TECH HANDBOOK NOTES Notes 33 SCISSOR LIFT TECH HANDBOOK ABBREVIATED WARRANTY Omni Metalcraft Corp warrants that the Equipment will be free of defects in workmanship and material if properly installed operated and maintained for period of one year or 2080 hours of use whichever is sooner from date of
3. 20 centers both sides along conveyors which provide surfaces and profiles attractive but hazardous for climbing sitting walking or riding WARNING Servicing moving or energized equipment can cause severe PINCH POINTS before servicing 113528 5 X 2 1 2 Placed next to drive both sides to warn maintenance personnel that 111870 5 X 3 conveyors must be shut off and locked out prior to servicing Examples General warning of pinch point hazards drives take ups and lubrication points which require guard removal Continued on next page SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION GENERAL SAFETY LABELS continued WARNING SHIPPING BRACE CAUTION LOCK OUT POWER i Remove Before before removing CONVEYOR MAY guard Operating Conveyor START WITHOUT WARNING 111750 1 3 4 x 1 1 4 22 Generally placed on smaller guards to a ont 2 2 re s V rii Eb 110491 10 x 7 alert personnel of potential danger if Placed equipment where conveyors removed before operating May cause severe guard is removed and power is not locked out op start without warning injury if not removed SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION SCISSOR LIFT SAFETY LABELS NDANGER an Do not put lt Do not WV handsor under lift f MA stand sit x E feet under A without u x or ride on To avo
4. OPERATIONAL SAFETY Only trained qualified personnel shall be permitted to operate the equipment Training shall include instruction in operation under normal conditions and emergency situations Where safety is dependent upon stopping starting devices they shall be kept free of obstructions to permit access The area around loading and unloading points shall be kept clear of obstructions that could endanger personnel Do not ride the load carrying element of a conveyor eguipment AN WARNING under any circumstances unless the equipment is designed and Climbing sitting equipped with safety and control devices intended to carry walking or riding on personnel For no reason shall person ride any element of conveyor at any time i will cause severe vertical conveyor Warning labels reading DO NOT RIDE injury or death CONVEYOR shall be affixed by the owner of the equipment KEEP OFF Personnel working on or near a conveyor equipment shall be instructed as to the location and operation of pertinent stopping devices Equipment shall be used to transport only a load that it is designed to handle safely Under no circumstances shall the safety characteristics of the equipment be altered Routine inspections and preventative and corrective maintenance programs shall be conducted to ensure that all safety features and guards are retained and function properly Inspect equipment for safety labels Make sure personnel
5. are aware of and follow safety label instructions Alert all personnel to the potential hazard of entanglement in AN WARNING conveyors equipment caused by items such as long hair loose Rotating shaft can clothing and jewelry cause severe injury Keep hair and loose clothing away SAFETY WARNING Replace all safety devices guards and guarding prior to equipment start up SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION MAINTENANCE SERVICE SAFETY 1 2 b d 3 4 ELECTRICAL POWER MUST BE TURNED OFF AND LOCKED TAGGED OUT following your company s machine specific procedures when servicing equipment to prevent accidental restarting by other persons or interconnecting equipment when used MAINTENANCE REPAIR Maintenance and service shall be performed by trained qualified personnel only Where lack of maintenance and service would cause hazardous condition the user shall establish maintenance program to ensure that conveyor components are maintained in condition that does not constitute a hazard to personnel No maintenance or service shall be performed when conveyor is in operation See Lubrication and Adjustment or Maintenance During Operation for exceptions When a conveyor is stopped for maintenance or service the starting devices prime mover powered accessories or electrical must be locked tagged out in accordance with a formalized procedure designed to protect all persons or groups in
6. injury Keep hair and loose clothing away KEEP AWAY 110479 5 x 2 1 2 113529 5 X 2 1 2 Placed on terminating ends both ends where there are exposed Placed next to drive both sides to warn personnel that the lineshaft moving parts which must be unguarded to facilitate function i e conveyor utilizes a rotating shaft which may be hazardous if hair or loose rollers pulleys shafts chains etc clothing become entangled around the rotating shaft Also used on any other conveyors where the exposed shaft may create similar hazards N DANGER N WARNING Exposed moving parts can cause Moving parts will severe injury cause severe injury LOCK OUT POWER before removing guard 8111744 5 X2 1 2 110478 5 X 2 1 2 General warning to personnel that the equipment s moving parts Placed on all chain guards to warn that operation of the machinery with which operate unguarded by necessity or function i e air cylinders guards removed would expose chains belts gears shafts pulleys etc create hazards to be avoided couplings etc which create hazards WARNING Guard Removed N WARNING Climbing sitting walking or riding on conveyor at any time will cause severe injury or death KEEP OFF Risk of severe injury DO NOT OPERATE Without guard 113513 5 X2 1 2 Placed on chain guard base so label is visible when guard cover is removed 111752 5 X2 1 2 Placed on max of
7. this may later be misinterpreted as mechanical trouble or a cylinder leak Remove the maintenance bars and lower the unit 7 Instruct user s in the proper operation of the lift safety precautions and equipment capacity Supply maintenance personnel with this service manual TABLE TOP HYDRAULIC CYLINDER BREATHER CAP MAINTENANCE MOTOR BAR PUMP nm OX d BASE TN ARERR RRR DE ROR RR BROR ORO aaa NS C x A GROUT SHIM 15 SCISSOR LIFT TECH HANDBOOK GENERAL INSTALLATION INSTALLATION INSTRUCTIONS INSTALLATION OF ANCHOR BOLTS 1 Position lift according to instructions on page 15 Drill holes in concrete the same diameter as anchor bolts using anchor clip holes as guides Drill holes sufficiently deep 2 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 3 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 4 After the scissor lift has been aligned leveled and shimmed and all anchor bolts installed pour 1 of grout under the entire base frame Tighten nuts or anchor bolts after the grout has set and cured Run hydraulic hose and or e
8. through the Down valve at a controlled rate and return to the reservoir The downward travel of the lift may be stopped at any desired point by removing the operator s finger from the DOWN button CAUTION DO NOT continue to press the UP button if the lift is not raising or you have reached the fully raised position as this may result in permanent damage to the motor or pump 18 SCISSOR LIFT TECH HANDBOOK GENERAL INSTALLATION OPERATING INSTRUCTIONS CUSTOM HYDRAULIC SCISSOR LIFT Hydraulic scissor lifts have an excellent safety record overall but as with all moving equipment they can be dangerous Operators must use common sense and take responsibility for the safety of everyone near the lift They must use the safety devices provided and be careful not to surprise anyone in the area with the movement of the lift PREOPERATIONAL CHECKS 1 Check all electrical wiring and connections to be sure that they are completed properly and are operational 2 Check for obstructions or debris that may interfere with the safe operation of the lift 3 Be sure that all personnel the area are safe distance away from the lift and aware that you are about to operate it 4 If there are any optional safety devices such as bellows or electric toe guards check them for proper operation TEST OPERATE THE EQUIPMENT 1 2 3 4 5 Station yourself so that you will always see the equipment when it is in operation Never op
9. BRICATION INSTRUCTIONS 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 the establishment of 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 SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP 21 SCISSOR LIFT TECH HANDBOOK MAINTENANCE GENERAL HYDRAULIC INFORMATION 1 2 3 All hydraulic cylinders will require the replacement of packing and seals after period of time depending on usage and environmental conditions It is normal maintenance just like changing oil in an automotive engine However maintenance personnel should recognize the difference between leakage and weepage Weepage is the normal accumulation of fluid that passes the seals in the course of operations As the hydraulic fluid properly performs its lubrication function on cylinder walls and piston rods It may be occasionally obser
10. EE o EEE 25 Electrical Schematic Single Phase e aaa 26 Electrical Schematic 8 27 Hydraulic Schematic Shop Aid 28 Hydraulic Schematic Power Up Power 29 Hydraulic Schematic Pump and Down Valve 30 PARTS BN ST 31 OCIS e MUI u u EE ME NEMIRA s 31 32 NOTES G 33 VARNA 34 Omni Metalcraft SCISSOR LIFT TECH HANDBOOK GENERAL SAFETY STATEMENTS IMPORTANT REQUIRED READING IMPORTANTE ILECTURA OBLIGATORIA To ensure this quality product is safely and correctly utilized all instructions within this manual must be read and understood prior to equipment start up Be aware of all safety labels on machinery If you do not understand any of the safety instructions or feel there may be safety labels missing contact your supervisor or product supplier immediately Para garantizar que este producto de calidad se utilice correctamente y con seguridad es necesario leer y comprender las instrucciones incluidas en este manual antes de comenzar a utilizar el equipo Est atento a todas las etiquetas de seguridad que se encuentran en las m quinas Si no entiende alguna de las instrucciones de seguridad o conside
11. SCISSOR LIFT Maintenance start Up iroublesnooting Tor Your Omni Metalcraft Corp quipment patina Omni Metalcraft SCISSOR LIFT TECH HANDBOOK TABLE OF CONTENTS TABLE OF CONTENTS Lune 2 GENERAESAFETY STATEMENTS se 3 NUT 3 Cautions Warnings and Hazards kana 3 SAFETY INFORMATION greide 4 General LENA GN 4 5 SV 6 xai I DES GA EEE EEE EEE 7 lt EEE EEE EE EE EEE EEE 8 NNN NNN 9 Maintenance and Service 5 10 11 Responsibilities of Owners nd Users EUR SEVERE ea Ye liebe d o via ded 12 LUCIUS ER T UU ERN 13 RECEIVING AND INSPECTION eks 14 Returns Damages and Shortages nana 14 Crating TT quila 14 GENERAL INSTALLATION se 15 TENNE 15 16 ES PE EE ENE NET NN IN MENU ME 17 NNN VANN 18 Operating SAS EET o mm 19 MAINTENANCE y aaa 20 MENN 20 Maintenance ScH ed es 21 General Hydraulic eg ze 22 Oil Viscosity 23 Report Miscellaneous Maintenance 24 TROUBLESHOOTING AND REPLACEMENT PARTS 25 fa 0 11 03 3 E
12. aningless Inadequate or incorrect wiring can starve the motor when the source voltage 15 ample Correct as necessary Check for line or hose leak Correct as necessary Check for oil shortage in reservoir Add oil if necessary Load may exceed rating Remove excessive load Suction screen may be clogged starving pump Screen is attached to suction line in tank Remove and clean Drain and replace oil Breather cap on reservoir may be clogged Remove and clean Down valve may be energized by faulty wiring or stuck open Remove solenoid and check Pump may be seized if motor is humming or blowing fuses or overloads MOTOR LABORS OR HEATS EXCESSIVELY Voltage may be low Check at motor terminals while pump is running loaded not at line source while pump is idling inadequate wiring can starve motor even when source voltage is ample Wiring may be incorrect On 3 phase units using twist lock plug make sure that one leg of motor line is not connected to ground prong Pump may be binding from oil starvation which develops high internal heat Pump can be irreparably damaged by oil starvation and may have to be replaced LIFT OPERATES OR SPONGY Lower lift entirely and hold Down button an additional 10 30 seconds to bleed air from cylinder Check for oil starvation in pump LIFT LOWERS TOO SLOWLY WITH LOAD Down valve may require cleaning Check for pinched tubing or hose Oil extremely heavy for existing tem
13. co Incorporated Rando Oil HD Z32 Valvoline Quality Hydraulic Oil ISO 46 Wolfshead Hydraulic Oil 46 FILL COMPONENTS WITH FLUID Reservoir filled with specified oil level mark 23 SCISSOR LIFT TECH HANDBOOK MAINTENANCE REPORT ON MISCELLANEOUS MAINTENANCE PERFORMANCE REPORT ON MISCELLANEOUS MAINTENANCE PERFORMANCE Date Maintenance Performed Date Maintenance Performed Date Maintenance Performed Date Maintenance Performed Date Maintenance Performed Date Maintenance Performed Date Maintenance Performed 24 SCISSOR LIFT TECH HANDBOOK TROUBLESHOOTING AND REPLACEMENT PARTS TROUBLESHOOTING WARNING Only qualified service personnel should undertake service work on hydraulic lifts Service personnel should be able to read and understand wiring and hydraulic diagrams know how to safely trouble shoot live electrical circuits and be familiar with this manual and all safety devices on this lift No work should be performed beneath a raised lift platform unless safety bars are installed LIFT DOES NOT RAISE POWER UNIT IS RUNNING OR HUMMING Rotation of 3 phase motor may be reversed Reverse any two electrical leads Motor may be single phasing humming Check wiring Voltage at motor terminals may be too low to run pump at existing load Check by measuring voltage at motor terminals or as near as possible while pump is running under load Reading source voltage or pump idling voltage is me
14. curely blocked in the UP position with maintenance bars to prevent accidental lowering of the lift Before maintenance or servicing ELECTRICAL POWER MUST BE TURNED OFF AND LOCKED TAGGED OUT following your company s machine specific procedure Be sure that all pressure is relieved from the hydraulic system before disassembling any components See General Hydraulic Information WEEKLY MAINTENANCE e Inspect bushings for wear Replace if necessary See Bushing Maintenance and Lubrication Instructions below Grease all regreaseable pivot pins Use No 2 lithium based grease equivalent if supplied MONTHLY MAINTENANCE e Inspect oil level in reservoir Fill if necessary e Inspect hydraulic hose s for pinch points and signs of wear Correct pinch points and replace hose s when necessary e Inspect all wires for looseness or wear e Inspect all hydraulic fittings for leaks Tighten as required e Clean all debris from the vicinity of floor mounted units in order to avoid interference with the lift mechanism or rollers e Operate the unit and check for any abnormal noise or vibrations e Check all safety devices on the unit such as the condition of the pleated bellows or smooth operation of the electric toe guards SEMI ANNUAL MAINTENANCE e Inspect oil for darkening or gritty feel Change if necessary e Inspect oil for presence of water oil will turn milky in color e Change oil if necessary BUSHING MAINTENANCE AND LU
15. d and shall not depend on the stopping of any other equipment The emergency stop devices shall be installed so that they cannot be overridden from other locations Inactive and unused actuators controllers and wiring should be removed from control stations and panel board together with obsolete diagrams indicators control labels and other material that might confuse the operator 3 SAFETY DEVICES All safety devices including wiring of electrical safety devices shall be arranged to operate such that a power failure or failure of the device itself will not result in a hazardous condition 4 EMERGENCY STOPS AND RESTARTS Equipment controls shall be so arranged that in case of emergency stop manual reset or start at the location where the emergency stop was initiated shall be required for the equipment and associated equipment to resume operation Before restarting the equipment that has been stopped because of an emergency an inspection of the equipment shall be made and the cause of the stoppage determined The starting device and electrical power must be turned off and locked tagged out according to your company s machine specific procedure before any attempt is made to remove the cause of the stoppage unless operation is necessary to determine the cause or to safely remove the stoppage 5 SAFETY WARNING Replace all safety devices guards and guarding prior to equipment start up 8 SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION
16. des 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 2 Position and align the lift so that 1 2 to 1 clearance is maintained around the platform Level the scissor lift and place solid shims under the base frame as detailed in the drawing below Grout as required If shimming and grout will not be used the floor must be level to within 1 8 in over 5 ft of length and width 3 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 4 Jog the motor with the control in very short jogs to check if the lift will raise On 3 phase systems 2 of 3 power leads may need to be switched so the pump will turn the proper direction Caution Continued operation of reversed direction hydraulic pump for approximately 30 seconds can burn up a pump so use short jogs 5 Raise the lift halfway several times fully lower holding the down control an extra 10 seconds each time when the lift is fully lowered to bleed air from the cylinders Then with the lift fully up insert the safety maintenance bars remove the breather cap and add hydraulic oil Replace the breather cap 6 Clean up any debris or spilled fluid as
17. ed by the manufacturer 6 Do not let the equipment stay in disrepair fix little problems while they are little problems or some of them may get very severe very quickly 7 Inspect the equipment on a regular schedule preferably monthly 8 Never work on the hydraulics or electrical systems unless the unit is fully lowered or properly sitting on a safety support 9 Never apply a load to the equipment unless the base is continuously supported WARNING 10 Never expect to hold a leg assembly by simply lifting one end of a platform A 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 in a 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 SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP 20 SCISSOR LIFT TECH HANDBOOK MAINTENANCE MAINTENANCE SCHEDULES WARNING To avoid personal injury never go under the lift platform until the load is removed and the scissor mechanism is se
18. erate the equipment in the blind Raise the equipment and note that the control is a constant pressure deadman type When you release the up or down switch the unit should stop moving immediately and maintain its elevation If it does not contact qualified maintenance personnel Cycle the equipment several times to be sure that it is operating smoothly with no jerking or sudden movement On initial start up there may be some air in the lines or the cylinders may be dry due to storage so it may take several cycles to smooth out the operation If the operation is not smooth after several cycles contact qualified maintenance personnel Any evidence of binding or scraping in the operation should cause you to immediately stop using the lift Check all safety devices for proper operation If you elect to test load the equipment be sure that you do not exceed the capacities shown on the tag Overloading may cause structural stresses that may not show up for some time but will diminish the life and capacity of the unit DAILY OPERATION 1 2 3 4 5 6 All personnel should be required to read and understand the entire operating instructions section of this manual prior to operating the lift Operators must know the capacity of the unit and be aware of any loads that may exceed the capacity Operators must be alert to all personnel in the vicinity of the lift and avoid any surprises to these personnel in regard to movement or the position of
19. gs are especially vulnerable and should be snugged up enough to stop leaking If leakage persists after tightening the fittings fairly hard inspect fittings for burrs on the mating edges Always use a sealant or Teflon tape with NPT fittings If using Teflon tape be sure the tape is started 1 1 2 threads back from the leading edge and only use 2 wraps to be sure that tape does not break off and contaminate the system Never reuse old sealant or Teflon tape Once a connection has been opened remove old and apply fresh sealant or tape 22 SCISSOR LIFT TECH HANDBOOK MAINTENANCE OIL VISCOSITY RECOMMENDATIONS HYDRAULIC FLUID All types of petroleum based hydraulic fluids are more or less suitable for use The exact choice of fluid is determined by its wear and temperature viscosity characteristics taking into consideration oxidation and corrosion protection material compatibility and air water separation characteristics CHEMICAL AND PHYSICAL PROPERTIES A P I Gravity 60 F 28 to 31 5 Viscosity sus 100 F 194 to 236 Viscosity Index 90 min Flash 385 deg min Fire 425 deg min THESE PRODUCTS ARE PREFERRED DUE TO THE ANTI WEAR ADDITIVES THEY CONTAIN Cities Service Oil Company Pacemaker XD 20 Gulf Oil Corporation Harmony 48 AW Mobil Oil Corporation D T E 25 Shell Oil Company Tellus 929 Sinclair Refining Company Duro AW 21 Standard Oil Company Ohio Induston FF 48 Sun Oil Company Sunvis 821 WR Oil Texa
20. he safety bars and make sure lift operates correctly Store the safety bars in their original position SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP 13 SCISSOR LIFT TECH HANDBOOK RECEIVING AND INSPECTION RETURNS DAMAGES AND SHORTAGES UNCRATING CHECKLIST 1 Compare the bill of lading with what you have received including accessories 2 Examine the equipment for damage 3 Immediately report shortages or damages to the vendor and carrier 4 Obtain a signed damage report from the carrier and send to the vendor Do not attempt to modify or repair damaged equipment prior to filing this report Note Do not return equipment to the factory without written return authorization Returns without written authorization will not be accepted Note Custom products may be crated differently RECEIVING AND INSPECTION REMOVAL OF CRATING AFTER COMPLETING THE UNCRATING CHECKLIST 1 Remove crating and packaging 2 Look for boxes accessories bags or components such as fasteners manuals guard rails etc that may be banded or fastened to the crating material Note Make sure all fasteners guards and essential components are not discarded 14 SCISSOR LIFT TECH HANDBOOK GENERAL INSTALLATION INSTALLATION INSTRUCTIONS ANCHORED AND PIT MOUNTED HYDRAULIC SCISSOR LIFT TABLES Note Permanent installation of hydraulic scissor lift tables may be subject to local co
21. id bodily injury A top 4 maintenance KI j lift read all instructions device before operating or servicing lift 8113611 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 instruction before using lift table and to warn of possible bodily injury hazards Do not stand sit or ride on lift 113609 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 Do no work under lift without maintenance device 8113608 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 113610 5 6 7 8 x 1 1 4 or B 4 8 2 A 6 2 x 1 1 12 Placed 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 DANGER vs To avoid bodily injury stand clear while lift table is moving SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION INSTALLATION SAFETY 1 LOADING UNLOADING Have trained personnel load or unload equipment The equipment must be properly handled when transferring from the unloading area to final site location t
22. lectrical cord through the conduit in the pit wall Replace the platform 16 SCISSOR LIFT TECH HANDBOOK PIT LAYOUT DRAWING GENERAL INSTALLATION S3SOH SITAVI uone o MOJ SS323U JAIM 2 T X d33Q v E T 023900 JO Jamod 03 yd uni so qeo JO sou JOJ ose edid 04 smogja daams snipes Suo YUM Je1euelp UNY Z 31 25 219 sajsue quno Suidid sapnppul s19u10 Ag yd T 9 9 NOILO3S SALON gt s v gt ni gt av a TY v gt LNOYD 6 5 Z T LH9I3H G3YIMOT 141 4 SYIHLO A8 SYIHLO A8 JSVO AlddNS YIMOd INHOHLVId dOL 13A38 1H5I3H SITONV 94ND G3YIMOT H Ld3Q T H19N31 INYOSLVTd HLONIT HLONJI INYOHLV 31 55 V V NOIL23S 4 V 12 x 17 ua h N W NININW uv JONVYVID HLGIM IA HO31 V 1d V NYOALV Id z HIGIM Lid 4 a ae ee ETT zi il mn Lond u ia j o NN SYIHLO AJHINOJH 41 NIVYG YO ANV dNNS G VA 77 SYIHLO 438 SJITONV V WYO3LVTd SCISSOR LIFT TECH HANDBOOK GENERAL INSTALLATION SEQUENCE OF OPERATION 1 2 3 4 5 Hydraulic Scissor Lifts are designed primarily for in plant applications and are furnished with constant
23. ll personnel shall be instructed regarding the necessity for continuous care and attention to safety during the operation of the equipment They must be trained to identify and immediately report all unsafe conditions or practices relating to the equipment and its operation Know your company s machine specific Lockout Tagout procedure Do Not perform maintenance until electrical disconnect has been turned off Replace all safety devices guards and guarding prior to equipment start up PP References used for safety instructions in this manual are from Conveyor Equipment Manufacturers Association CEMA and The American Society of Mechanical Engineers ASME 3 SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION GENERAL SAFETY LABELS Safety labels have been placed at various points on the equipment to alert everyone of potential dangers Inspect equipment for proper position of safety labels and make sure all personnel are aware of the labels and obey their warnings As mentioned in the previous section a safety study should be made of the equipment application by the purchaser s It is the purchaser s responsibility to provide any additional guards safety labels or other safety eguipment deemed necessary based on this safety study The following pages contain typical safety labels that may have been attached to your eguipment N WARNING AN WARNING Moving equipment Rotating shaft can can cause cause severe injury severe
24. made by authorized personnel in conformance with the manufacturer s instructions OPERATORS Only trained and authorized personnel shall be permitted to operate the lift 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 qualified personnel 2 Inspected the lift for proper operation and condition Any suspect item shall be carefully examined and determination made by qualified person as to whether it constitutes 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 purpose and within the manufacturer s limitations and safety rules 1 Do not overload the lift Please note that the lift has capacity tag attached to it Do not remove the tag Exceeding the capacities shown on the tag may cause damage to the lift or injury to personnel 2 Ensure that all safety devices are operational and in place 3 Personnel near operating lifts must maintain a safe distance to avoid being pinched or trapped by the equipment or struck by objects that may fall from the lift platform MODIFICATIONS OR ALTERATIONS Consult the manufacturer before modifying or altering the equipment in any way failure to do so may void the warranty 12 SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION WARNINGS WARNING NO RIDERS
25. n started shall not be started until personnel in the area are alerted by a signal or by a designated person that the equipment is about to start Where system function would be seriously hindered or adversely affected by the required time delay or where the intent of the warning may be misinterpreted i e a work area with many different equipment and allied devices a clear concise and legible warning sign needs to be provided The warning sign shall indicate that equipment and allied equipment may be started at any time that danger exists and that personnel must keep clear These warning signs shall be provided along the equipment at areas not guarded by position or location Remotely and automatically controlled equipment and equipment where operator stations are not manned or are beyond voice or visual contact from drive areas loading areas transfer points and other potentially hazardous locations on the equipment path not guarded by location position or guards shall be furnished with emergency stop buttons pull cords limit switches or similar emergency stop devices All such emergency stop devices shall be easily identifiable in the immediate vicinity of such locations unless guarded by location position or guards Where the design function and operation of such equipment clearly is not hazardous to personnel an emergency stop device is not required The emergency stop device shall act directly on the control of the equipment concerne
26. o prevent damage 2 GUARDS GUARDING Interfacing of Equipment When two or more pieces of equipment are interfaced special attention shall be given to the interfaced area to ensure the presence of adequate guarding and safety devices WARNING Guard Removed Guarding Exceptions Wherever conditions prevail that would require guarding under this standard but such guarding would render the DO NOT OPERATE equipment unusable seek guidance from your safety professional Without guard Risk of severe injury 3 ANCHORING DO NOT operate equipment unless it is properly anchored Serious injury or death may result 4 SAFETY WARNING Install all safety devices guards and guarding prior to equipment start up SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION ELECTRICAL SAFETY 1 ELECTRICAL CODE All electrical installations and wiring shall conform to federal state and local codes When equipment operation is not required for a maintenance procedure ch WARNING electrical power must be turned off and locked tagged out following your energized equipment can cause severe company s machine specific procedure injury LOCK OUT POWER before servicing 2 CONTROL STATION Control stations should be so arranged and located that the operation of the affected equipment is visible from them Control stations shall be clearly marked or labeled to indicate the function controlled Equipment that would cause injury whe
27. perature LIFT WILL NOT LOWER ELECTRICAL Solenoid coil may be incorrectly wired not rated for the voltage or the line voltage may be excessively low Check voltage near coil 120 volt or 24V LIFT RAISES THEN LOWERS BACK SLOWLY Down solenoid valve may not be seating Remove solenoid and check again If lift does not hold with solenoid coil removed down valve cartridge should be removed and cleaned or replaced as necessary Oil line hose or fitting may be leaking Check and repair if necessary Check valve in pump assembly may not be seating This is indicated by the pump and motor turning backward on their own Most of the time this condition is audible Replace pump assembly SAFETY WARNING REPLACE ALL SAFETY DEVICES GUARDS AND GUARDING PRIOR TO EQUIPMENT START UP 25 SCISSOR LIFT TECH HANDBOOK ELECTRICAL SCHEMATIC STANDARD SINGLE PHASE WIRING SCHEMATIC FUSED DISCONNECT BY OTHERS 115V 120 HZ PUMP MOTOR 115V HP 13 8 AMP x WIRE FOR CLOCKWISE 18 AWG DOWN TO Gro SOLENOID FOOT PEDAL OR HAND PENDANT 26 SCISSOR LIFT TECH HANDBOOK ELECTRICAL SCHEMATIC STANDARD THREE PHASE WIRING SCHEMATIC MAG STARTER FUSED DISCONNECT BY OTHERS CONTACTS O L HEATERS 230 460 m rey m O L CONTACTS UP LIMIT WHEN USED gt STARTER CLIL 96 95 DOWN SOLENOID FOOT PEDAL OR HAND PENDENT 27
28. pressure push button controls Actuating the UP button causes the solenoid on the magnetic starter to pull in closing its line contacts and allowing the line voltage to be applied to the motor Assuming the motor rotation is correct the motor will drive a gear pump which in turn draws oil from the reservoir through the pump and forces it at a constant volume under pressure required by the load The oil flows through the valves and piping into the hydraulic cylinder The hydraulic cylinder must displace the incoming volume of oil by increasing the size of the chamber This is accomplished by forcing the piston inside the cylinder away from the fully collapsed position The piston is attached to a rod which is attached to structural members of the lift s leg assembly As the piston and rod move out the legs open When the desired height or upward travel of the platform is attained the button is deactivated by removing the operator s finger from the push button The motor stops the pump from pumping oil The check valve in the pump assembly closes preventing reverse flow of the oil This maintains the desired raised position When the operator desires to lower the lift the person depresses the DOWN button on the push button control which closes the circuit and energizes the down valve solenoid The solenoid pulls in and activates the Down valve which allows the valve to open Opening the Down valve allows the oil in the cylinder to flow
29. ra que faltan algunas etiquetas de seguridad icomun quese inmediatamente con su supervisor o proveedor del producto COMPLIANCE WITH SAFETY STANDARDS Compliance with safety standards including federal state and local codes or regulations is the responsibility of the equipment purchaser s Placement of guards safety labels and other safety equipment is dependent upon the area and use to which the system is applied safety study should be made of the equipment application by the purchaser s It is the purchaser s responsibility to provide any additional guards safety labels or other safety equipment deemed necessary based on this safety study The information contained in this safety manual is correct at the time of printing Due to the continuing development of product lines changes in specifications are inevitable The company reserves the right to implement such changes without prior notice If you suspect fire hazards safety hazards dangers towards health or any other job safety concerns consult your federal state or local codes Certain safety information in this document was reprinted from ASME B20 1 2000 by permission of The American Society of Mechanical Engineers All rights reserved Inspect equipment for safety labels Make sure personnel are aware of and follow safety instructions Maintain an orderly environment in the vicinity of the equipment at all times Clean up spilled materials or lubricants immediately A
30. shipment to Customer subject to the limitations hereunder set forth If within the one year warranty period Omni receives from the Customer written notice of any alleged defects in the Eguipment and if the Eguipment is not found to be in conformity with this warranty the Customer having provided Omni a reasonable opportunity to perform any appropriate tests thereon Omni will at its option either repair the Eguipment or supply a replacement therefore The above stated information is in reference to a section of Omni Metalcraft s full Terms and Conditions of sale This information does not constitute an agreement but simply reference information To obtain a full copy of Omni Metalcraft s Terms and Conditions of sale please contact your sales representative 34 Omni Metalcraft Box 352 8 Alpena Michigan 49707 Phone 989 358 7000 Fax 989 358 7020 info omni com 35
31. tained in a legible operational condition WARNING Guard Removed Risk of severe injury DO NOT OPERATE Without guard 10 SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION MAINTENANCE SERVICE SAFETY continued 5 INSPECTIONS Routine inspections with preventative and or corrective maintenance programs shall be conducted to ensure that all safety features and devices are maintained and function properly All personnel shall inspect for hazardous conditions at all times Remove sharp edges or protruding objects Repair or replace worn or damaged parts immediately 6 CLEANING Where light cleaning and or casing cleaning are required they shall be performed by trained personnel The conveyor electrical power must be turned off and locked tagged out following your company s machine specific procedures Special attention may be required at feed and discharge points 7 SAFETY WARNING Replace all safety devices guards and guarding prior to equipment start up 11 SCISSOR LIFT TECH HANDBOOK SAFETY INFORMATION RESPONSIBILITIES OF OWNERS AND 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 MODIFICATIONS OR ALTERATIONS All repairs shall be
32. the lift at any time Never operate the unit if you cannot see it and the personnel around it On the first use of the lift each day each operator should check to see that the lift is operating properly and smoothly All safety devices must be in place and operating properly If the unit has a traveling electrical cord the operator must ensure that it is kept away from the lift as it raises and lowers Loads should be centered before raising or lowering the lift as this will help ensure even wear on all moving parts 19 SCISSOR LIFT TECH HANDBOOK MAINTENANCE MAINTENANCE INSTRUCTIONS 1 Alwaysremember that this is a piece of machinery with large moving parts that can seriously hurt you 2 Read and understand this manual in its entirety before attempting service work WARNING 3 Always use the safety bars or safety chocks if you are going to work on the unit in the elevated position or must reach under the platform 4 When using the safety supports adhere to the following rules A Be sure there is no load on the platform 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 lock tag out the electricity to the unit to prevent accidental movement of the lift by other personnel E Spend as little time as possible under the lift 5 Use only replacement parts recommend
33. ved squirting from cylinder breathers but should stop squirting after several cycles of full stroke when the small accumulation is cleared Leakage is the fluid which leaks past worn or cut packing and seals It too may be observed squirting but does not stop after several cycles and the lift will probably not hold position under load Always be careful when working around cylinders not to nick the extended rod or dent the cylinder casing as this may cause damage to cylinder seals or packing If you elect to repaint or retouch part of the lift cover exposed rods with plastic or soluble grease which can be removed after painting to ensure that no paint sticks to the rods and damages packing or seals General precautions Be sure that all pressure is relieved from the hydraulic system before disassembling any components Continue to hold the down control for several seconds after fully lowering the unit on its safety support or the ground before opening a line or component Always be careful to avoid contamination entering the system Be careful with the ends of the hoses which may fall into dirt or other foreign materials If you suspect contamination flush the system and components Hydraulic fittings sealants and torgues The lift may be eguipped with NPT fittings tapered JIC 37 Degrees flared fittings and SAE fittings with O ring seals Be careful when tightening NPT fittings not to over tighten and crack them Swivel fittin
34. volved with the conveyor against an unexpected restart Personnel should be alerted to the hazard of stored energy which may exist after the power source is locked out All safety devices and guards shall be replaced before starting eguipment for normal operation ADJUSTMENT OR MAINTENANCE DURING OPERATION When adjustments or maintenance must be done while eguipment is in operation only trained gualified personnel who are aware of the hazards of the conveyor in motion shall be allowed to make adjustments perform maintenance or service Conveyors shall NOT be maintained or serviced while in operation unless proper maintenance or service reguires the conveyor to be in motion If conveyor operation is reguired personnel shall be made aware of the hazards and how the task may be safely accomplished LUBRICATION Conveyors shall NOT be lubricated while in operation unless it is impractical to shut them down for lubrication Only trained and gualified personnel who are aware of the hazards of the conveyor in motion shall be allowed to lubricate a conveyor that is operating Where the drip of lubricants or process liguids on the floor constitutes a hazard drip pans or other means of eliminating the hazard must be provided by purchaser s MAINTENANCE OF GUARDS AND SAFETY DEVICES Guards and safety devices shall be maintained in a serviceable and operational condition Warning signs are the responsibility of the owner of the conveyor and must be main
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