INSTALLATION, OPERATION AND SERVICE MANUAL CMD PORTABLE DOCK SCISSORS LIFT P.O. Box 1058 Item #830CMD • 1058 West Industrial Avenue Guthrie, • OK 73044-1058 • FAX: 405-282-8105 • www.autoquip.com 405-282-5200 • Version 1.
TABLE OF CONTENTS Identification and Inspection 3 Dangers, Warnings, and Cautions 4 Label Identification 8 Specifications 11 Lift Blocking Instructions 12 Installation Instructions 14 Operating Instructions 16 Routine Maintenance 18 General Maintenance 20 Replacement Parts List 27 Troubleshooting Analysis 28 IMPORTANT Please read and understand this manual prior to installation or operation of this lift. Failure to do so could lead to property damage and/or serious personal injury.
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. INSPECTION Immediately upon receipt of the lift, a visual inspection should be made to determine that it has not been damaged in transit. Any damage found must be noted on the delivery receipt.
DANGERS, WARNINGS & CAUTIONS 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.
DANGERS, WARNINGS & CAUTIONS 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 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. See "Lift Blocking Instructions" section.
DANGERS, WARNINGS & CAUTIONS DANGER! Extending the platform length or width beyond the factory limit could cause the unit to tip, which could result in personal injury or death. DANGER! Do not attempt to remove the velocity fuse until the maintenance locks securely support the lift and all hydraulic pressure has been removed from the lifting cylinders and hydraulic hoses.
DANGERS, WARNINGS & CAUTIONS CAUTION! Never run the pump for more than a couple of seconds without pumping oil. This applies to low oil conditions, improper motor rotation, running the pump against the relief pressure after the lift is fully raised against the physical stops, running overloaded beyond capacity, or running at reduced speed because of pinched or obstructed hydraulic lines.
LABEL IDENTIFICATION Figure 1 Label Placement Diagram CMD Item No. 1 2 3 4 5 Qty 2 4 1 1 2 Description Caution – Familiarize Yourself With Operators Manual Danger – Do Not Put Hands or Feet . . . Autoquip Serial Number Nameplate Fill with Recommended Oils Only Capacity 8 Part No.
LABEL IDENTIFICATION Note: Labels shown here are not actual size.
LABEL IDENTIFICATION Figure 5 Label 36400661 Figure 6 Label 36401594 10
SPECIFICATIONS Model Lifting Cap. (lbs) Axle Load Capacity Over Bridge End (lbs) Axle Load Capacity Opposite Bridge End (lbs) Axle Load Capacity Over Sides (lbs) Approx. Std. Power Unit Dim (Inches) Standard Platform (Inches) Base frame Size (Inches) Min.
LIFT BLOCKING INSTRUCTIONS 1. Remove all load from the platform. Never block the lift when loaded. 2. Raise the platform sufficiently for the base rollers to rollback past the flip-over maintenance locks, located on the base frame of the lift. 3. Engage both maintenance locks by flipping them over (see Figure 7). 4. Lower the platform until the base rollers come into contact with and rest against the maintenance locks.
LIFT BLOCKING INSTRUCTIONS Figure 7 Maintenance Locks & Portability Wheels 13
INSTALLATION INSTRUCTIONS The CMD is easy to install and operate. It is completely self-contained and ready to go to work as soon as the unit is received. The control is centrally located on the platform to allow operation from any side. All electrical components and wiring are in accordance with the National Electrical Code. Loads can be quickly rolled over the hinged throw-over bridge onto the platform. A removable “T” handle is provided enabling one person to move the empty CMD.
INSTALLATION INSTRUCTIONS Figure 8 General Arrangement 15
OPERATING INSTRUCTIONS 1. Scissors lifts have maximum lifting capacity ratings (See the “Specifications” section). The safety relief valve has been factory set to open at a point slightly above the rated load and allows the oil to bypass into the reservoir. The safety relief valve should not be adjusted for any reason as it could cause the motor or pump to prematurely burn out. Applying loads exceeding the rated capacity of the lift may result in excessive wear and damage to the lift. 2.
3. Lower the lift until the base frame, at the cylinder end, picks itself off of the floor approximately one inch. 4. The lift can then be moved by pulling or pushing on the “T” handle. To disengage the portability set: 1. Lift the “T” handle to a vertical position and remove it from under the tang. Be careful, as the handle will have a tendency to pull away as the base is lowered to the floor. 2.
ROUTINE MAINTENANCE Normally scissors lifts will require very little maintenance. However, a routine maintenance program could prevent costly replacement of parts and/or downtime. WARNING! To avoid personal injury, NEVER go under the lift platform or perform any maintenance on the lift until the load is removed and the scissors mechanism is securely blocked in the open position. See "Lift Blocking Instructions" section. MONTHLY INSPECTION 1.
ROUTINE MAINTENANCE Oil Viscosity Recommendations Environment Recommended Oil (Ambient Temperatures) Indoor location, variable 10W30 or 10W40 temperatures (30 - 100° F) Multiviscosity motor oil Indoor location, consistent SAE-20W motor oil Temperatures (70° F) Outdoor location, (-10 - 100° F) SAE 5W30 Multiviscosity motor oil Cold-storage warehouse 5W30 Multiviscosity (10 - 40° F) motor oil Freezer (-40° F to 0° F) Consult Factory OIL CAPACITY Standard polyethylene tank capacity is approximately five quart
GENERAL MAINTENANCE CYLINDER REPLACEMENT 1. Lower the lift to the fully lowered position. 2. Continue to hold the “DOWN” button an additional 10 seconds after the lift has stopped traveling downward to relieve the system pressure. 3. Always shut off the main electrical switch when maintenance is to be performed. 4. Unbolt the two hex head bolts that connect the cylinder to the platform. 5. Disconnect the hydraulic hose from the cylinder. WARNING! Do not remove the base clevis pin.
AIR BLEEDER SCREW W/ WASHER ROD END STOP 21 RAM CASING RAM CASING DETAIL A 1/4" - 90° FORGED STEEL ELBOW (3000 P.S.I.) GARFILL BUSHING Figure 9 Ram Detail GARFIL BUSHING (2 REQ'D) SPACER TUBE TRUNNION (2 REQ'D) SEAL/PACKING GLAND GLASS FILLED BACKUP RING QUAD RING RAM PLUNGER IN RETRACTED POSITION FOR SEAL REPLACEMENT. SEAL PACKING GLAND RAM PLUNGER (1 1/2" DIA.
GENERAL MAINTENANCE VELOCITY FUSE REPLACEMENT 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! 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 10 Hydraulic Schematic CMD 30/40 23
GENERAL MAINTENANCE WIRING THE MOTOR Use the following chart in connecting these motors to power sources. HP and Source AMP Draw (full load) 2 HP / 115 V/60 CY/1 PH 22 A 2 HP / 230 V/60 CY/1 PH 11 A NOTE: 115V/1ph/60Hz operation is not recommended. If 115V/1ph operation is absolutely required, the lift will function properly if adequate power is supplied. However, it is very sensitive to deviations from the required power. Consequently, performance could prove unsatisfactory.
GENERAL MAINTENANCE Figure 11 Electric Schematic 25
GENERAL MAINTENANCE Figure 12 Pushbutton Assembly 26
REPLACEMENT PARTS LIST PART # DESCRIPTION 20022877 20024006 20036059 20038006 28003176 30000710 32701290 32701370 35108200 35700947 35903610 35903228 40200640 41050147 41503030 41800541 42300467 45400058 45400082 45400259 45400462 45502234 45901014 46000030 46000071 46000097 46200432 46200267 50110014 52500303 52500311 52500667 52500675 52502226 52502432 52600269 60950003 64200603 18DU16 Bushing 24DU24 Bushing Caster, 4” OD x 1_” face, steel Wheel, 5” x 1_” x _” steel Cotter Pin Motor, 2HP Solenoid, 24VA
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 Lift raises, then lowers back slowly. POSSIBLE CAUSE AND SOLUTION • The "Down" solenoid may not be seating. Remove the solenoid coil and check again.
TROUBLESHOOTING ANALYSIS PROBLEM Lift does not raise. POSSIBLE CAUSE AND SOLUTION • 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. Add oil as necessary (See Oil Requirements in the “Routine Maintenance” section.) • The load may exceed the rating. (See the “Specifications” section.) Remove the excess load. • The suction filter may be clogged, starving the pump.
TROUBLESHOOTING ANALYSIS PROBLEM Lift won’t lower. POSSIBLE CAUSE AND SOLUTION • The solenoid coil may be incorrectly wired, burned out, not rated for the voltage, or the line voltage may be excessively low. Check voltage near the coil. • 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. Inspect all fittings, hoses, and other hydraulic components for leads or damage. 2.
TROUBLESHOOTING ANALYSIS PROBLEM Lift seems bouncy during operation. POSSIBLE CAUSE AND SOLUTION • Lower the lift to collapsed position and continue to hold “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. Motor labors or heats excessively. • The voltage may be low.
