INSTALLATION, OPERATION AND SERVICE MANUAL DOUBLE PANTOGRAPH LIFT P.O. Box 1058 • 1058 West Industrial Avenue • Guthrie, OK 73044-1058 • 888-811-9876 • • 405-282-5200 • FAX: 405-282-3302 • www.autoquip.com Item #830DPL Version 2.0 Dec.
TABLE OF CONTENTS Identification and Inspection 3 Responsibility of Owners/Users 4 Safety Signal Words 5 Safety Practices 6 Label Identification 11 Specifications 15 Lift Blocking Instructions 17 Installation Instructions 22 Operating Instructions 34 Routine Maintenance 35 General Maintenance 39 Replacement Parts List 56 Troubleshooting Analysis 67 Warranty 73 IMPORTANT Please read and understand this manual prior to installation or operation of this lift.
IDENTIFICATION & INSPECTION IDENTIFICATION When ordering parts or requesting information or service on this lift, PLEASE REFER TO THE MODEL AND SERIAL NUMBER. This information is on a nameplate attached to the leg assembly. Replacement parts are available from a local Autoquip distributor.
RESPONSIBILTY OF OWNERS/USERS DEFLECTION It is the responsibility of the user/purchaser to advise the manufacturer where deflection may be critical to the application. INSPECTION & MAINTENANCE The lift shall be inspected & maintained in proper working order in accordance with this manual and with other applicable safe operating practices.
SAFETY SIGNAL WORDS SAFETY ALERTS (Required Reading!) The following SAFETY ALERTS are intended to create awareness of owners, operators, and maintenance personnel of the potential safety hazards and the steps that must be taken to avoid accidents. These same alerts are inserted throughout this manual to identify specific hazards that may endanger uninformed personnel. Identification of every conceivable hazardous situation is impossible.
SAFETY PRACTICES Read and understand this manual and all labels prior to operating or servicing the lift. All labels are provided in accordance with ANSI Z535.4. DANGER ! Do not work under the lift without a Maintenance Device! To avoid personal injury, NEVER go under the lift platform until the load is removed and the scissors mechanism is securely blocked in the open position. See "Lift Blocking Instructions" section.
SAFETY PRACTICES WARNING ! Do not make modifications to the lift such as extending the platform length or width, this could cause the platform to tip. Do not add unauthorized or unspecified components to the lift. Modifications to the lift can result in unsafe operating conditions which could lead to serious injury or death. WARNING ! If the lift is equipped with handrails, do not operate this equipment without handrails and snap chains in place.
SAFETY PRACTICES WARNING ! All warning and information decals should be in place as outlined in the “Label Identification” section. If decals are missing or damaged, they should be replaced with new ones. Contact Autoquip for replacements. WARNING ! Lift platforms traveling below floor levels my create openings, and the shape of the load and how the load is arranged on the lift may create a toe hazard as the load passes the top edge of the pit.
SAFETY PRACTICES WARNING ! Any lift which has a hinged throw-over bridge damaged to the point of hanging more than 30 degrees below horizontal is in violation of the safety standards set forth in ANSI MH29.1 and MUST be taken out of service until the bridge is repaired or replaced. Failure to do so could result in severe personal injury. WARNING ! Lifts should not be overloaded beyond the established capacity as damage and/or personal injury may result.
SAFETY PRACTICES NOTICE! Do not continue to depress the “UP” button on the controller if the lift is not raising or if the lift has reached the fully raised position. To do so may result in permanent damage to the motor or pump. NOTICE! Never run the pump for more than a couple of seconds without pumping oil.
LABEL IDENTIFICATION Figure 1: Label Placement Double Pantograph Labels Label No. 1 2 3 4 5 6 7 8 Qty 4 2 1 2 2 2 4 4 Description Danger – Do Not Put Hands or Feet . . . Caution – Familiarize Yourself with Operators Manual Autoquip Serial Number Nameplate Capacity Autoquip Logo Maintenance Device Warning: Do Not Operate This Equipment Without . . . Danger – Do Not Put Hands Or Feet (Modified). . . NOTE: Label No. 7 & 8 are used on units with riders 11 Part No.
LABEL IDENTIFICATION Note: Labels shown here are not to actual size, see Figure 1 for location of label on lift.
LABEL IDENTIFICATION Note: Labels shown here are not to actual size, see Figure 1 for location of label on lift.
LABEL IDENTIFICATION Note: Labels shown here are not to actual size, see Figure 1 for location of label on lift.
SPECIFICATIONS Travel 36* 48* 60 72 84 96 108 120 132 144 Cap. (lbs.) Model Ld Ht (in.) 500 36DP05*** 8.5 1500 36DP15 9.25 3000 36DP30 10.75 3000 48DP30 11.25 6000 48DP60 12.75 9000 48DP90 15 12000 48DP120 16.5 9000 60DP90 16.5 12000* 60DP120 18 9000 72DP90 17 12000* 72DP120 18.5 9000 84DP90 18 12000* 84DP120 19.5 9000 96DP90 19.5 12000* 96DP120 20.5 3000 108DP30 17.25 6000 108DP60 17.25 9000* 108DP90 20.5 12000* 108DP120 22 3000 120DP30 18.75 6000 120DP60 18.
SPECIFICATIONS CAUTION! Lifts should not be overloaded beyond the established capacity as damage and/or personal injury may result and will void its warranty. DANGER! Do not make modifications to the lift without authorization from the manufacturer. Autoquip cannot foresee and is not responsible for injury or damage which results from the unauthorized modifications or misuse of the lift. UNBALANCED LOADING The stabilization provided is basically for balanced loads.
LIFT BLOCKING INSTRUCTIONS WARNING ! Only authorized personnel should perform inspection or maintenance and service procedures. Unauthorized personnel attempting these procedures do so at the risk of personal injury or death. DANGER ! Failure to properly adhere to lift blocking procedures is to risk the sudden and uncontrolled descent of the lift during maintenance or inspection. A falling lift can cause severe injury or death.
LIFT BLOCKING INSTRUCTIONS LIFT BLOCKING PROCEDURE– (Reference Figures: 9A & 9B) b. Maintenance leg is connected to the base frame by a chain. Remove the maintenance leg from its storage location. Place one end of the maintenance leg in the leg socket located in the base frame on the Clevis End, (See Figure 9B). Lower the lift platform until it comes down and makes contact with the maintenance leg.
LIFT BLOCKING INSTRUCTIONS FLIP-OVER MAINTENANCE LOCKS SHOWN IN PLACE ON BOTH SIDES OF BASE FRAME Figure 2A: Flip-Over Maintenance Locks 19
LIFT BLOCKING INSTRUCTIONS Figure 2B: Maintenance Leg – High Capacity or High Travel Models 20
LIFT BLOCKING INSTRUCTIONS LIFT BLOCKING PROCEDURE– (continued) 5. Follow OSHA electrical lock-out/tag-out procedures. Disconnect and tag all electrical and/or other power sources to prevent an unplanned or unexpected actuation of the lift. 6. Once inspection or work is complete reverse steps 1-5 above, raise the lift off the maintenance device and place the maintenance device back into the designated storage position.
INSTALLATION INSTRUCTIONS WARNING! Before installing the lift, read & follow the recommended safety practices in the Safety Practices section. Failure to follow these safety practices could result in death or serious injury FLOOR INSTALLATION 1. Make sure the installation area is clean before starting. Check the mounting surface of the floor with a level or straight edge.
INSTALLATION INSTRUCTIONS DANGER! Do not work under the lift without use of the Maintenance Device! To avoid personal injury, NEVER go under the lift platform until the load is removed and the scissors mechanism is securely blocked in the open position and the appropriate OSHA lock-out/tag-out procedure is followed. See "Lift Blocking Instructions" section. 6. The base frame of the lift has pre-drilled holes for lagging it securely to the floor. Mark the holes, drill, and install with anchors.
INSTALLATION INSTRUCTIONS LIFT & HOSE INSTALLATION – (Reference Figure 3A & 3B) CAUTION! Precautions should be taken to prevent the introduction of contaminates such as dirt or other foreign material into the hydraulic system through open fittings, pipes or disassembled components. Contamination will ruin the hydraulic system. 1. Make temporary hose connections with high-pressure hose (see chart below) to allow the lift to be operated when it is set in the pit.
INSTALLATION INSTRUCTIONS PIT INSTALLATION – Platforms with Bevel Toe Guards (Reference Figure 3A & 3B) DANGER! Do not install the lift in a pit unless it has a bevel toe guard or other approved toe protection. Failure to provide approved toe protection could result in exposure to shear points and potential severe injury to personnel.
INSTALLATION INSTRUCTIONS PIT INSTALLATION – Platforms with Bevel Toe Guards (Reference Figure 3A & 3B) NOTICE ! When moving the lift, do not attempt to pick it up by the platform; it is hinged and could be damaged. Pick up the lift from under the base frame ONLY using a strap sling. 5. Make temporary electrical connections and permanent hydraulic connections. Raise the lift approximately one foot using the “UP” button.
INSTALLATION INSTRUCTIONS CLEAN UP 1. Clean up any debris from the area. A clean installation makes a good impression and creates a much safer environment! 2. Touch-up paint is available from Autoquip for repair of damaged paint surfaces. WARNING! All DANGER, WARNING, and CAUTION labels and informational decals and plates must be intact and in place on the lift. Contact an Autoquip representative if labels are missing or damaged. See “Label Identification” section of this manual.
Figure 3A: Pit Drawing 28 82601770 (NOT TO SCALE) MAINTENANCE DEVICES 1/2" FOR SHIMMING CURB ANGLES BY OTHERS BEVEL TOE GUARDS ON (4) SIDES W/ BLACK & YELLOW STRIPED TAPE © COPYRIGHT RESERVED AUTOQUIP CORPORATION DRAIN (IF REQUIRED) AUTOQUIP CORP. 1058 W.INDUSTRIAL AVE. GUTHRIE, OK 73044-1058 888-811-9876 WWW.AUTOQUIP.
INSTALLATION INSTRUCTIONS Figure 3B: Lifting and Installation 29
INSTALLATION INSTRUCTIONS LEVELING TO GRADE: – (Reference Figure 3A & 3B) 1. The platform top should be solid and flush with the pit curb angles. The pit depth includes 1/2” added to the lowered height of the lift for leveling purposes (see Figure 10 and 11). 2. Fully lower the lift platform into the pit and check for proper height. 3. Shims and/or grout must be placed under the entire base frame assembly and the platform support members to support the platform top at grade level.
INSTALLATION INSTRUCTIONS STARTING UP AND LAGGING DOWN - continued: 6. Raise the platform and install the maintenance device (see “Lift Blocking Instructions” section). 7. Lag down the base frame in the holes provided. Lag bolts should be able to withstand 2000 lbs. minimum upward pull at each corner. 8. Replace any electrical connections with permanent. FINAL PREPARATION: 1. Place the optional handrails in the platform sockets as shown in Figure 3B. 2.
INSTALLATION INSTRUCTIONS SKIRT INSTALL PROCEDURE FOR A LIFT ORDERED WITH AN ACCORDION SKIRT – (Reference Figure 4) 1. Position the platform in the raised position. Install the maintenance locks (see “Lift Blocking Instructions” section). Remove the handrails. Position the accordion with the weight rod pocket at the bottom and the mounting collar at the top. The breathable material when provided must be positioned at the top of the skirt with the mounting collar. 2.
INSTALLATION INSTRUCTIONS Figure 4: Accordion Skirt Installation 33
OPERATING INSTRUCTIONS WARNING ! Familiarize yourself with this operator’s manual before operating this equipment. Only trained and qualified personnel should operate this equipment. 1. Scissors lifts have maximum lifting capacity ratings (see “Specifications” section). The safety relief valve has been factory set to open at a pressure slightly above the rated load capacity and allows the oil to bypass into the reservoir to prevent damage to the lift and its hydraulic power unit.
ROUTINE MAINTENANCE WARNING! Before maintaining lift, read & follow the recommended safety practices in the Safety Practices section. Failure to follow these safety practices could result in death or serious injury. THROW-OVER BRIDGE WARNING ! Any lift which has a hinged throw-over bridge damaged to the point of hanging more than 30 degrees below horizontal is in violation of the safety standards set forth in ANSI MH29.1 and MUST be taken out of service until the bridge is repaired or replaced.
ROUTINE MAINTENANCE Daily Inspection List (10 hours of operation): • • • • Check reservoir fluid level. Check all hydraulic hoses and electrical cords for cracks, abrasions, twisting, etc. Small leaks at connections can be remedied by tightening connections or replacing the faulty component. Check that hydraulic pressure does not exceed 3,000 psi. Check overall condition of unit (i.e. bends, breaks, loose or missing screws, etc.).
ROUTINE MAINTENANCE OIL REQUIREMENTS: Change oil yearly or more frequently if it darkens materially or feels gummy or gritty. Check oil for the presence of water, (oil will turn milky in color).Do not use hydraulic-jack oil, hydraulic fluids, brake fluids, or automatic transmission fluid. OIL RECOMMENDATIONS Hydraulic lifts operate efficiently utilizing high quality oil products that are readily available in all areas.
ROUTINE MAINTENANCE NOTICE! Use approved fluids only! Use of unauthorized fluids may cause damage to seals and hosing. DO NOT USE: 1. Automatic Transmission Fluid (ATF) 2. Hydraulic Jack Oil 3. Hydraulic Fluids 4. Brake Fluids Standard Factory recommended fluid is SAE 5W30 motor oil. See Oil Recommendations on previous page. BLEEDING AIR FROM THE SYSTEM 1.
GENERAL MAINTENANCE WARNING! Before maintaining lift, read & follow the recommended safety practices in the Safety Practices section. Failure to follow these safety practices could result in death or serious injury. DANGER! Do not work under lift without Maintenance Device! To avoid personal injury, NEVER go under the lift platform until the load is removed and the scissors mechanism is securely blocked in the open position and the appropriate OSHA lock-out/tag-out procedure is followed .
GENERAL MAINTENANCE The following should be referenced in connecting the standard heavy-duty motors to power sources. Remember that heavy wire must be used all the way to the power source.
GENERAL MAINTENANCE DANGER ! HIGH VOLTAGE!! – Disconnect and/or lock out the electrical supply to the power unit per OSHA Lock-Out, Tag-Out procedures prior to any installation or maintenance being performed. POWER UNIT WIRING – (Reference Figure 5) CONTRACTOR REMOTE POWER UNIT: 1.
GENERAL MAINTENANCE WARNING! Before maintaining the lift, read & follow the recommended safety practices in the Safety Practices section. Failure to follow these safety practices could result in death or serious injury. DANGER ! Failure to relieve lift table system pressure could result in the sudden and unexpected release of pressure during maintenance and/or repair of the lift and result in severe injury to personnel and/or damage to the lift. CYLINDER REMOVAL 1.
GENERAL MAINTENANCE ' PH ' CYLINDER REPACKING (Reference Figure 6) 1. Remove the cylinder as described above in Cylinder Removal. 2. Pull the rod out of the cylinder tube sufficiently to gain access to the 'spanner wrench holes’ on the rod end of the cylinder. Do not allow oil or dirt to be pulled back into the hydraulic hose. 3.
GENERAL MAINTENANCE ' PH ' CYLINDER REPACKING (Reference Figure 6) 11. Slip the bearing assembly into place. Align the retainer hole in the bearing assembly groove with the slot in the tube. 12. Insert the retainer hook end in the hole/slot and using a face spanner wrench. Turn the bearing assembly clockwise until the retainer is completely inserted in the groove/slot in the tube. 13. Check the clevis pin bushings in the cylinder rod for wear and replace as necessary. 14.
GENERAL MAINTENANCE ' PH ' CYLINDER REPACKING (Reference Figure 6) 21. Cycle the lift 10 to 15 times and repeat the bleeding operation by holding the ”DOWN” button for 30 to 40 seconds. 22. Check the oil level in the reservoir with the lift in the fully lowered position. Add oil as necessary (see “Routine Maintenance” for oil recommendations). 23. Clean or replace the oil filler breather cap if it appears dirty. 24. Clean up any debris and or spilled oil from the area.
GENERAL MAINTENANCE ' TH ' CYLINDER REPACKING (Reference Figure 6) CYLINDER REMOVAL AND REPACKING 1. Raise the lift to its full height and block securely. See “Lift Blocking Instructions”. 2. Cut off the electricity to the power unit (lock out-tag out). 3. Disconnect the cylinder hose at the power unit end and insert it into the oil-fill hole of reservoir. 4. Loosen the bolt in the cylinder upper clevis. 5. Remove the cylinder pin from the upper clevis. 6.
GENERAL MAINTENANCE ' TH ' CYLINDER REPACKING (Reference Figure 6) CYLINDER REMOVAL AND REPACKING 16. Insert the piston into the barrel, taking care not to pinch or nick the new seal. 17. Slip the bearing assembly into place and align the retainer hole with the slot in the barrel. 18. Turn the bearing with the Spanner wrench until the retainer is reinserted completely. 19. Pull up the rod and reinstall the upper clevis pin and setscrew. 20. Reconnect the cylinder hose. 21.
GENERAL MAINTENANCE DANGER! Do not attempt to remove the velocity fuse until the lift is securely supported with the maintenance locking devices and all hydraulic pressure has been removed from the lifting cylinders and hydraulic hoses. Failure to follow these instructions could result in personal injury or death! VELOCITY FUSE REPLACEMENT Never attempt to take a velocity fuse apart and repair it. These are precision devices that are factory assembled under exacting conditions.
GENERAL MAINTENANCE Figure 7: Pushbutton Wiring Diagram 49
UP 50 DOWN STANDARD FOOTSWITCH ASSEMBLY 1 2 EXCHANGE BLACK AND RED WIRES IF DESIRED TO SWITCH "UP" AND "DOWN" FUNCTIONS. USE APPROPRIATE WIRE, CONDUIT, ETC. TO SATISFY LOCAL CODES (BY OTHERS). 4. 5. INSTALLER TO APPLY "UP" AND "DOWN" LABELS TO TOP OF COVER AS REQUIRED. ELECTRICAL RATING WITHOUT CORD 15 AMP, 115/230VAC FOOT GUARD PAINTED YELLOW 7. 8. 9. INSTALL FOOTSWITCH GUARD PER MANUFACTURER'S INSTRUCTIONS. USE 3/16" WIRE TABS FOR WIRING FOOTSWITCH. 3. 6.
NON-SKID BASEPAD BARRIER COMES STANDARD. CAN COME WITHOUT BARRIER AT CUSTOMER'S REQUEST. ALL STEEL CONSTRUCTION COMMON WIRING CHANNEL GENERAL MAINTENANCE 5.75" 4.83" 10.
DOWN UP WHT. PUSHBUTTON 2 2 2 L3 L2 L1 L1 6 AUX. CONTACT 6 "DOWN" LIMIT SWITCH (WHEN USED) 10 6 5 "UP" LIMIT SWITCH (WHEN USED) 5 GRN. RED BLK. 4 SECONDARY FUSE PRIMARY FUSE(S) FUSED DISCONNECT (BY OTHERS) TRANSFORMER 6 AUX. CONTACT + - 7 8 3 9 BLU. DN. SOL. (BY AUTOQUIP) R AS 9 AUDIBLE SIGNAL (WHEN USED) 3 6 O.L. RELAY CONTACT FLASHING RED LIGHT (WHEN USED) 3 ORG.
SUCTION LINE FILTER RESERVOIR RELIEF VALVE CHECK VALVE DOWN SOL. VALVE 2 DOWN FLOW CONTROL VALVE 1 HYDRAULIC SCHEMATIC PRESSURE LINE AND DOWN SOLENOID VALVE. PUMP ASSEMBLY PROVIDES COMPLETE THE FUNCTION OF: CHECK, RELIEF, VELOCITY FUSES (QTY. DEPENDS ON MODEL) (1) PER CYLINDER. 2 2 1 1 LIFT CYLINDER(S) (QTY.
M 54 RELIEF VALVE SUCTION LINE FILTER IS INTERNAL TO DELTATROL BLOCK UNLESS A SEPERATE FILTER IS SPECIFIED. FILTER SUCTION LINE P.F. CHECK VALVE RESERVOIR DOWN SPEED RESTRICTOR RETURN LINE FILTER PRESSURE LINE DOWN VALVE WITH PRESSURE COMPENSATED FLOW CONTROL LOWERING VALVE AND PRESSURE LINE FILTRATION. COMPENSATED FLOW CONTROL, SOLENOID DELTATROL VALVE PROVIDES COMPLETE, THE FUNCTION OF CHECK, RELIEF, PRESSURE VELOCITY FUSES (1) VELOCITY FUSE PER CYLINDER. MODEL OF LIFT USED.
GENERAL MAINTENANCE Figure 10: ‘UP’ Limit Switch Installation and Wiring 55
REPLACEMENT PARTS LIST HYDRAULIC PARTS LIST: -- (Reference Figure 11) ITE QTY No. Description Part No.
REPLACEMENT PARTS LIST Figure 11: Cylinder & Hose Diagram 57
REPLACEMENT PARTS LIST 60DP90 TO 96DP90 PARTS LIST - CONTACT AUTOQUIP SERVICE DEPT. FOR ADDITIONAL MODEL LIFTS -- (Reference Figure 12) ITEM 1 2 3 4 5 6 7 8 9 10 11 12 NA NA NA NA NA PART # 24012502 45400249 20023925 52501491 52601640` 45400546 24026008 52505130 20024667 52504032 52505470 52505480 DESCRIPTION Washer, 1/16" X 1.502 X 2-1/8" Retainer Ring, 1-1/2" Heavy Duty DU Bushing, 24DU16, 1.500 X 1.000 L Roller Pin, 1.500 X 2.
REPLACEMENT PARTS LIST Figure 12: Replacement Parts Diag 59
REPLACEMENT PARTS LIST Contractor Power Unit CONTRACTOR POWER UNIT -- (Reference Figure 13A & 13B) PART # 65750040 6430633X 64201020 47701640 30600613 40200655 41502840 41050139 32701290 32701300 DESCRIPTION HYDRAULIC SCHEMATIC Contractor P.U. Assembly without Sol. Coil (select coil below) Polyethylene Reservoir (9” x 9” x 18”) Filler Breather Cap 5 HP Contractor Motor; 208-230-460V / 60CY / 3 PH: Tang Shaft, C-Face, Foot Mt, Pump, 2.8 GPM, Tang Shaft; without Sol.
Figure 13A: Contractor Power Unit Parts Detail 61 FLOW CONTROL DOWN SOLENOID CONTROL PANEL AUTOQUIP CORPORATION 2002 © COPYRIGHT RESERVED HAND HELD OR WALL MOUNTED. (SHIP LOOSE.) PUSHBUTTON AUTOQUIP CORP. 1058 W.INDUSTRIAL AVE. GUTHRIE, OK 73044-1058 888-811-9876 WWW.AUTOQUIP.COM TRANSFORMER, STARTER,& CONTACTOR PRE-WIRED TO TERMINAL STRIP. (SHIP LOOSE.) 2.8 GPM PUMP W/ INTERNAL CHECK, RELIEF, DOWN VALVES 5 HP SUPER TORQUE TENV MOUNTING BRACKETS (SUITABLE FOR FLOOR OR WALL MOUNTING). 4.5 GAL.
REPLACEMENT PARTS LIST Contractor Power Unit Figure 13B: Contractor Power Unit Parts Detail (Approximate Size: 18” x 20” x 12”H) 62
REPLACEMENT PARTS LIST 5HP Vertical Power Unit VERTICAL POWER UNIT -- (Reference Figure 14A to 14C) ITEM PART # ----1 2 3 4 65750001 64000813 47700208 47302905 30600449 6 7 8 9 10 11 12 12 40300162 20000253 20000238 20001442 47700075 41001010 32701380 32701370 DESCRIPTION HYDRAULIC SCHEMATIC 16X16X10 Reservoir Filler Breather Cap for Reservoir Motor & Pump Mounting Bracket 5 Horsepower Motor; 3450 RPM, C-Face, Foot Mt. (Not Continuous Duty Motor) 4.5 G.P.M.
Figure 14A: Vertical Power Unit Parts Detail 2 82600270 REV 2, 10/11/05 (NOT TO SCALE) SUCTION FILTER GEAR PUMP DRAIN PLUG COUPLING AND ADAPTER MOTOR JUNCTION BOX CONTROLS PER QUOTATION POWER UNIT - 16" X 22" X 29" HIGH. APPROXIMATE OVERALL DIMENSIONS OF 82600270 PRESSURE HOSE (9"W x 8"DP x 13"H) TRANSFORMER, STARTER, & CONTACTOR PRE-WIRED TO TERMINAL STRIP. (SHIP LOOSE) CONTROL PANEL AUTOQUIP CORPORATION 2005 © COPYRIGHT RESERVED ORIFICE PIPE AUTOQUIP CORP. 1058 W.INDUSTRIAL AVE.
REPLACEMENT PARTS LIST 5HP Vertical Power Unit Figure 14B: Vertical Power Unit Parts Detail 65
REPLACEMENT PARTS LIST 5HP Vertical Power Unit Figure 14C: Vertical Power Unit Parts Detail 66
TROUBLESHOOTING ANALYSIS DANGER! To avoid personal injury, NEVER go under the lift platform until the load is removed and the scissors mechanism is securely blocked in the open position. See "Lift Blocking Instructions" section. PROBLEM POSSIBLE CAUSE AND SOLUTION • Lift will not Raise. • • • • • • • • • • • The motor rotation for a 3-phase motor may be reversed. Reverse only two motor electrical leads. Check for a line or hose leak. Check for oil shortage in the reservoir.
TROUBLESHOOTING ANALYSIS PROBLEM Lift will not Raise – Continued. POSSIBLE CAUSE AND SOLUTION • • The manual lowering device may be engaged. AIR POWER UNIT: Air hose connections may be leaking air or hoses maybe crimped. Check for air leaks and hose crimping and resolve these issues. There may be insufficient air pressure or air flow at the air motor. Air requirements at the air motor are: 90 PSI & 110 CFM). Check the air supply at the air motor and resolve air supply issues.
TROUBLESHOOTING ANALYSIS PROBLEM Lift will not Lower. POSSIBLE CAUSE AND SOLUTION • • • • • • The down solenoid may be malfunctioning. The maintenance leg could be installed. The structural members may be in a bind. The hose or tubing maybe obstructed or broken. Check for obstruction in the line. The return filter may be clogged. (Vertical PU only) The velocity fuse may be locked. Do not attempt to remove the velocity fuse. The following steps should be followed: 1. Remove the load from the lift.
TROUBLESHOOTING ANALYSIS PROBLEM POSSIBLE CAUSE AND SOLUTION • The structural members of the lift may be binding. • Check for pinched hose or tubing. Where pipe is used, check for obstruction in the line. • The hydraulic line or hose may be leaking. • The oil viscosity is not suited for the environmental conditions. Refer to “Routine Maintenance” section for oil recommendations. • Check the oil level in the reservoir. • The motor voltage/wiring may be incorrect.
TROUBLESHOOTING ANALYSIS PROBLEM Lift will not remain in Raised position. POSSIBLE CAUSE AND SOLUTION • The cylinder seals may be leaking. • The "Down" solenoid may not be seating. Remove the solenoid coil and check again. If the lift does not hold with the solenoid coil removed, the down valve cartridge should be removed and cleaned or replaced as necessary. • The oil line hose, or fittings may be leaking. Check and repair if necessary. • The “check valve” in the pump assembly may not be seating.
TROUBLESHOOTING ANALYSIS PROBLEM POSSIBLE CAUSE AND SOLUTION • Lower the lift to collapsed position and continue to hold the “DOWN” button an additional 10-30 seconds to bleed air from the cylinder. Do not confuse spongy or jerky operation with small surges that may occur when operating on rough or uneven floors • Check for oil starvation. • The voltage may be low. Check at the motor terminals while the pump is running loaded, not at the line source or while the pump is idling.
LIMITED WARRANTY The user is solely responsible for using this equipment in a safe manner and observing all of the safety guidelines provided in the Owner’s Manual and on the warning labels provided with the lift. If you are unable to locate either the manual or the warning labels, please contact Autoquip or access www.autoquip.com for replacement downloads or information.
