LHP SERIES Dock Leveler Owner’s/ User’s Manual Systems, Inc. • W194 N11481 McCormick Drive • Germantown, WI 53022 800.643.5424 • fax: 262.255.5917 • www.docksystemsinc.com • techservices@docksystemsinc.com Printed in U.S.A. Copyright © 2007 Manual No. 4111-0012 Oct. 2007 Dec.
Table of Contents Page Safety Recognize Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General Operational Safety Precautions . . . . . . . . . . . . . . . . . . . . . . 1 Operational Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Maintenance Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY Recognize Safety Information General Operational Safety Precautions Safety-Alert Symbol The Safety-Alert Symbol identifies important safety messages on equipment, safety signs, in manuals, or elsewhere. When you see this symbol, be alert to the possibility of personal injury or death. Follow the instructions in the safety message. Read and understand the operating instructions and become thoroughly familiar with the equipment and its controls before operating the dock leveler.
SAFETY Operational Safety Precautions Learn the safe way to operate this equipment. Read and understand the manufacturer's instructions. If you have any questions, ask your supervisor. Stay clear of dock leveling device when freight carrier is entering or leaving area. Chock/restrain all freight carriers. Never remove the wheel chocks until loading or unloading is finished and truck driver has been given permission to drive away.
SAFETY Do not use dock leveling device if freight carrier is too high or too low. Do not overload the dock leveling device. Do not operate any equipment while under the influence of alcohol or drugs. Do not leave equipment or material unattended on dock leveling device. 4111-0012 — Oct.2007 Dec.
SAFETY Maintenance Safety Precautions ALWAYS disconnect electrical power source and ground wire before welding on dock leveler. DO NOT ground welding equipment to any hydraulic or electrical components of the dock leveler. Always ground to the dock leveler frame. Failure to follow these instructions may result in damage to dock leveler and/or serious personal injury or death. Hydraulic and electrical power must be OFF when servicing the equipment.
SAFETY Safety Decals Safety Decal on Leveler Frame Safety Decal on Platform Cylinder 4111-0012 — Oct.2007 Dec.
INTRODUCTION General Information Dock Leveler Stock Specifications LHP dock levelers are available in the following sizes, weight capacities, and options: Width 6 ft (1828.8 mm) 6-1/2 ft (1981.2 mm) 7 ft (2133.6 mm) Length 6 ft (1828.8 mm) 8 ft (2438 mm 10 ft (3048 mm) Congratulations on your choice of a Systems, Inc. dock leveler. This manual covers the LHP series hydraulic dock leveler. Designed by Systems, Inc. to be a marvel of simplicity and efficiency.
INTRODUCTION Component Identification A B C F D J E G H K A — Lip B — Platform C — Lip Cylinder D — Powerpack (Motor/Pump/Reservoir) E — Maintenance Prop F — Platform Cylinder G — Main Frame H — Lip Keepers (2 used) J — Full RangeToe Guard (4 used) K —Raise Button THEORY The LHP dock leveler uses a pressure operated valve block and single push-button operation for ease of use. The dock leveler can be operated remotely using the RAISE button (K) on the control panel .
INSTALLATION Prepare Pit A C B 14” 10” D A—Distance (Pit Width) (Front and Rear) B— Distance (Dock Floor-to-Pit Floor) (All Four Corners) C— Distance (Pit Length) (Both Sides of Pit) D— Distance (Pit Corner-to-Corner) (Top, Bottom, and Both Sides) Before lowering the dock leveler into the pit, the following must be performed: Post safety warnings and barricade the work area at dock level and ground level to prevent unauthorized use of the dock leveler before installation has been completed.
INSTALLATION Prepare Dock Leveler IMPORTANT DO NOT remove the shipping bands (B) around the platform lip and leveler frame at this time. The shipping bands are needed to hold the leveler together during the installation process. 1. Remove any control panel and bumpers that may be banded to the frame of the dock leveler. DO NOT remove the shipping bands (B) around the platform lip and leveler frame at this time. IMPORTANT DO NOT overtighten the lifting bracket hardware.
INSTALLATION Install Dock Leveler Shim Stacking Methods M N P Q A— Distance (Leveler Frame Height) B— Shim Locations (Under Rear Vertical Supports) C— Shim Location (Under Maintenance Prop,Lip Keepers, Main Cylinder) D—Dock Floor E— Rear Pit Curb Steel F— String 10 G— Rear Hinge frame Angle H— Distance (Dock floor-ToPit Floor) J— Distance (TOP of Shim to Dock Floor K— Shim Stack L— Dock Leveler Base Frame M — Pyramid (Preferred) N— Stepped (Acceptable) P— Offset (Not Acceptable) Q — Straight (Not Acc
INSTALLATION NOTE: Systems, Inc. dock levelers are designed with a nominal 1/2 in. (12.7 mm) shimming distance to allow for pit inconsistencies. 4. For all LHP models, put a 1/4 in. (6.6 mm) thick shim at locations (C and D) . 1. Determine height of shim stack (L) for each shim location (B) by performing the following: NOTE: A 1/4 in. (6.6 mm) thick shim at locations (C and D) is used only as a starting point. The final shim stack height will be determined after dock leveler is lowered into the pit. a.
INSTALLATION A— Front of Dock Pit B— Dock Leveler Frame C— Side Pit Curb Angle D— Gap [3/4 in. (19 mm) Minimum] 8. With rear hinge frame angle (F) tight against rear pit curb angle (G), perform/check the following: • Pry between the platform and rear hinge frame angle at locations (E) to make sure rear edge of platform is parallel to the rear hinge frame angle (F). • Gap (D) must exist equally along both sides of leveler so weather seal (if equipped) will not bind during dock leveler operation.
INSTALLATION IMPORTANT DO NOT grind or weld if hydraulic fluid or other flammable liquid is present on the surface to be ground or welded. DO NOT grind or weld if uncontained hydraulic fluid or other flammable liquid is present. Stray sparks can ignite spills or leaks near the work area. Always clean up the oil leaks and spills before proceeding with grinding or welding. Always keep a fire extinguisher of the proper type nearby when grinding or welding.
INSTALLATION A B D C A— Platform Joists B— Shim Locations (Under Platform Cylinder Trunnions) 14. Using an external lifting device (i.e., crane or fork truck) attached to the platform lifting brackets, slowly raise the platform. Check for binding as platform is being raised. 15. If binding occurs, lower the platform. Reposition leveler and/or add or remove shims as necessary. Slowly raise platform again. If platform still binds, contact Systems, inc. Technical Services for further instructions. 16.
INSTALLATION Make sure the platform is properly supported in the raised position before entering the pit to finish weld the shims. Failure to do this may result in serious personal injury or death. 18. All model levelers: Install shims at locations (B) using the pyramid or stepped shimming method. Both platform cylinder trunnions must be solidly shimmed the entire length of the trunnion. Make sure the trunnions are level from side-to-side as well as from front-to-back. 19.
INSTALLATION Install Control Panel and Wiring A The electrical power must be OFF prior to electrical installation. For maximum protection, use an OSHA approved locking device to lock out all power sources. Only the person installing the equipment should have the key to unlock the power source. Failure to follow these instructions may result in serious personal injury or death. B C DO NOT make any final electrical connections until all welding has been completed.
INSTALLATION Put New Dock Leveler Into Service 1. Disconnect the external lifting device and chains from the lifting brackets. 2. Check that the leveler is flush with the dock floor and that the platform lip contacts both lip keepers evenly. If an excessive transition exists between the dock floor and leveler and/or lip does not contact both lip keepers evenly, contact Systems, inc. Technical Services for further instructions. 3. Install the dock bumpers as required. 7.
OPERATION Stay clear of dock leveler when freight carrier is entering or leaving dock area. 12 in. (305 mm) DO NOT move or use the dock leveler if anyone is under or in front of leveler. 12 in. (305 mm) Keep hands and feet clear of pinch points. Avoid putting any part of your body near moving parts. Failure to follow these instructions may result in severe personal injury or death. Only trained personnel should operate the dock leveler.
OPERATION Operating Instructions—Continued Ramp Loading/Unloading Instructions NOTE: If end unloading is required, see End Loading/Unloading Instructions on page 24. For ramp loading or unloading, the LHP dock leveler can be operated by using the RAISE button on the control panel. 1. Check to make sure truck/trailer is positioned squarely against dock bumpers. 5. Proceed with loading or unloading the truck/trailer. 6. If end loading is necessary, see End Loading/Unloading Instructions on page 20. 2.
OPERATION Operating Instructions—Continued End Loading/Unloading Instructions NOTE: If ramp loading is required, see Ramp Loading/Unloading Instructions on page 19. End loading or unloading can be done with the dock at the cross-traffic position or below-dock position, depending on the height of the truck/trailer bed. A 1. Check to make sure truck/trailer is positioned squarely against dock bumpers. 2. Instruct driver to remain at the dock until the loading or unloading process has been completed. 3.
MAINTENANCE Service Dock Leveler Safely Side View F E A B C A— Tagout Device B — Lockout Device C — Lockout Device When service under the dock leveler is required, always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop. Failure to do this may result in serious personal injury or death. Always stand clear of the dock leveler lip when working in front of the dock leveler.
MAINTENANCE Periodic Maintenance B A F C D A— Lip Lug Area B— Platform Hinge Area C— Main Cylinder Pins D— Maintenance Prop Pivot Before performing any maintenance under the dock leveler, lock the electrical power source in OFF position and lock the maintenance prop in the service position using an approved locking device. (See Service Dock Leveler Safely in this section.) Failure to follow these instructions may result in serious personal injury or death.
MAINTENANCE Regular maintenance must be performed on a weekly and quarterly schedule. P Q N Weekly Maintenance • Operate the dock leveler through the complete operating cycle to maintain lubrication. NOTE: To thoroughly inspect the platform hinge area, put the platform in the full below-dock position. • Inspect the platform lug and the lip lug areas. The hinge areas must be kept free of dirt and debris. Build-up of foreign material in the hinge areas will cause abnormal operation.
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ADJUSTMENTS Adjust Main Pressure Relief When service under the dock leveler is required, always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop. Failure to do this may result in serious personal injury or death. A D C Always post safety warnings and barricade the work area at dock level and ground level to prevent unauthorized use of the dock leveler before maintenance is complete.
ADJUSTMENTS Adjust Lip Function 26 4111-0012 — Oct.
ADJUSTMENTS When service under the dock leveler is required, always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop. Failure to do this may result in serious personal injury or death. Always post safety warnings and barricade the work area at dock level and ground level to prevent unauthorized use of the dock leveler before maintenance is complete. Failure to do this may result in serious personal injury or death.
PARTS Electrical Components * Provide dock leveler serial number, voltage, phase, and options when calling or faxing controller orders. 28 4111-0012 — Oct.
PARTS Electrical Components 4111-0012 — Oct.2007 Dec.
PARTS Hydraulic Components 30 4111-0012 — Oct.
Toe Guard / Weather Seal Options B C CC A K E F E G H J AR = As Required NOTE: Brush or track can be purchased separately as replacement parts. Contact factory for part numbers. Kits provide all parts / hardware to add Toe Guards or Weather Seal to an existing dock leveler. Weatherseal channel must be welded to leveler *Note, see Safety section (P.4). Pay special attention to removing grounds to motor anc control box before welding.
PARTS Weather Seal, Brush Style Item A B C CC D E F G H J K Quantity 2 2 2 2 2 4 1 1 2 1 1 Part Number DOTH-2818 DOTH-2824 DOTH-2820 DOTH-2822 DOTH-2041 DOTH-2207 Item Quantity Part Number A 1 C 1 1 DOTH-2131 DOTH-2842 DOTH-2819 DOTH-2187 DOTH-2843 DOTH-2850 DOTH-2821 DOTH-2820 DOTH-2851 DOTH-9178 DOTH-9179 DOTH-9180 DOTH-9181 Description Channel, Weather Seal, 84” T-Rubber, Weather Seal, 84” Extrusion, Brush Weather Seal, 84” Brush Weather Seal, 1.
MISCELLANEOUS Customer Information A NOTE: Refer to illustration for left/right orientation of dock leveler. The model/serial number decal (A) is located on the right platform joist near the front (lip) of dock leveler. Dock Leveler Information Model ___________________________________ Serial No. ________________________________ Systems, Inc., Job No. ______________________ When you receive your LHP dock leveler, write down the dock leveler model and serial number in the form provided.
SYSTEMS, INC. WARRANTY LHP SERIES LEVELER Systems, Inc., guarantees the materials, components, and workmanship in your Systems, inc. dock leveler to be of the highest quality and to be free of defects in material and workmanship for a period of One (1) Year Base Warranty on all components from date of shipment. The Base Warranty includes replacement parts, labor and freight.
