Presto Work Positioners WP, Work Positioners WPS User Manual
WP & WPS
Series
W ork Positioners
Installation, Operation
and Service Manual
Model Number ___________________
Serial # _________________________
Date placed in service _____________
IMPORTANT: READ CAREFULLY
BEFORE INSTALLING OR OPERATING LIFT
Part orders are subject to a $50 miminum charge.
March 2009
This manual was current at the time of printing. To obtain
the latest, most updated version, please contact Presto
Lifts Customer Service Department or go to our website:
www.PrestoLifts.com -- you will find a complete list of
current owner’s manuals to print.
CONTENTS
Page
Section Number
SECTION 1: Introduction ................................................................................................. 3
SECTION 2: Safety ........................................................................................................... 3
SECTION 3: Installation ................................................................................................... 3
A. Inspection
B. Removing From Pallet
SECTION 4: Operation ..................................................................................................... 4
A. Operating Instructions
B. Daily Operations Maintenance Checks
SECTION 5: Maintenance ................................................................................................ 4
A. Instructions
B. Monthly Operations Maintenance Checks
SECTION 6: Service ......................................................................................................... 5
RESTOCKING POLICY & RGA POLICY ................................................................. 15
WARRANTY ............................................................................................. BACK COVER
LIST OF FIGURES:
Model WP (Figure 1) ..................................................................................................................................... 6
Model WPS (Figure 2) .................................................................................................................................... 6
WP &WPS Rear View (Figure 3) .................................................................................................................. 6
Steering Assembly (Figure 4) ........................................................................................................................ 7
Floor Lock Assembly (Figure 5) .................................................................................................................... 8
Chain Roller Assemblies (Figure 6) ............................................................................................................... 8
1000, 1500 & 2700 lb. Cylinder (Figure 7) ................................................................................................... 9
2000 lb. Capacity Cylinder (Figure 8) ........................................................................................................... 9
Work Positioner Back Plate Assembly (Figure 9) ....................................................................................... 10
DC Power Wiring Schematic (Figure 10) .................................................................................................... 11
Standard DC Power Pack Illustration (Figure 11) ....................................................................................... 11
DC Power Pack With Remote Control Illustration (Figure 12) ................................................................... 11
AC Power Wiring Schematic (Figure 13) .................................................................................................... 12
Standard AC Power Pack Illustration (Figure 14) ....................................................................................... 12
AC Power Pack With Remote Control Illustration (Figure 15) ................................................................... 12
DC Wiring Schematic With Remote Control (Figure 16) ............................................................................ 13
AC Wiring Schematic With Remote Control (Figure 17) ............................................................................ 13
LIST OF TABLES:
Steering Components (Table 1) ..................................................................................................................... 7
Cylinder Components (Table 2) ..................................................................................................................... 9
Replacement Parts (Table 3) ........................................................................................................................ 14
2
SECTION 1
INTRODUCTION
This manual attempts to provide all of the information necessary for the safe and proper installation, operation and
maintenance of Presto’s Battery Operated Work Positioner. It is important that all personnel involved with the
installation, maintenance or operation of the Work Positioner read this manual. Additional manuals are available at
www.prestolifts.com
The battery-operated Work Positioner is equipped with a data plate that has a serial number and model identification.
Please refer to these numbers when ordering parts or requesting further information.
The battery-operated Work Positioner is designed for lifting, lowering and positioning a wide variety of loads. Call
Presto for further instructions where unique situations arise that are not covered in this manual.
The battery-operated Work Positioner is designed for only indoor, non-hazardous locations. These units are not for
personnel lifting. All equipment is manually propelled and has a hydraulically powered vertical travel.
SECTION 2
SAFETY
The battery-operated Work Positioner is a very powerful lift capable of doing large amounts of work.
Carefully read this manual before installing or operating this lift. Some hazards have been identified that may occur
during the installation, maintenance and use of this lift.
WARNING!
• Do not perform any repair work on lifts if there is a load on the forks or platform.
• Do not perform any repair work if the forks or platform is in the raised position.
• All personnel must stand clear of the lift while in motion.
• Do not put hands or feet under the forks or platform.
• Do not stand underneath the forks or platform.
• Do not stand in front of the Work Positioner while in motion.
• Do not stand, sit or climb on the lift.
• Do not use the lift on soft, uneven or unstable surfaces.
• Do not exceed the load center or capacity.
SECTION 3
INSTALLATION
A. INSPECTION:
The lift is tested and inspected prior to shipment. Inspect the Work Positioner completely upon receipt, to determine if
there is any damage caused during shipment by the freight company and that the lift is complete. A freight claim must
be filed with the freight company if damage is apparent. Do Not use the lift if there appears to be any damage. Check
the following with the lift in a collapsed position:
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• Check for signs of damage especially to the back cabinet that houses the battery, electrical/hydraulic power
pack.
• Check all connections for tightness. Is there hydraulic fluid visible?
• Check base frame for dimensions and structural integrity.
• Inspect for any bent or damaged metal parts.
B. REMOVING FROM PALLET:
Remove all packaging materials prior to removing the lift from the pallet. Visually inspect the lift as closely as
possible.
Carefully pick up the lift taking into consideration the center of gravity of the lift with an overhead hoist or forklift.
Use a hoist and nylon sling with a minimum of 2,000-lb capacity if you choose to pick the lift up with an overhead
hoist. Pick the lift up by the top cross member of the lift. Have all personnel completely cleared from the area because
the lift will begin to swing when it is clear of the pallet.
Pick the lift up approximately six inches above the pallet. Once raised and secure remove the pallet from below the lift
then lower the lift.
SECTION 4
OPERATION
A. OPERATING INSTRUCTIONS:
1. To raise the lift, push the control handle or activate the UP BUTTON on a remote control.
2. To lower the lift, pull the control handle or activate the DOWN BUTTON on a remote control.
3. Whenever the controls are released, the lift stops.
AUTHORIZED OPERATORS SHOULD READ AND UNDERSTAND ALL INSTRUCTIONS, PRECAUTIONS
AND WARNINGS. IMPROPER USE OF THIS LIFT COULD RESULT IN INJURY AND/OR DAMAGE TO THE
LOAD AND/OR EQUIPMENT.
• Inspect the lift for damaged or worn parts. Do not use if not in safe operating condition.
• Use lift only on hard level surfaces.
• Make sure load is evenly distributed, not loose or unstable and is as far back as possible on the platform or forks.
Do not pick up loads on the tips of the forks or edge of platform.
• Adjust forks to the maximum practical width on a fork model lift if they are adjustable. Pick loads up on both
forks, not one.
• Do not overload. Check load center and lift weight capacities that are located on the data plate.
• Make sure work area is clear of all obstructions.
• Check overhead clearance before lifting loads or transporting.
• Make sure floor lock pad is in firm contact with floor before lifting load, lowering load or using as a workstation.
• Brace or block lift when sliding loads on or off platform or forks.
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DAILY OPERATIONS MAINTENANCE CHECKS:
B.
1. Battery
A. Check for corroded and loose terminals. A white powder substance will be present if there is any existing
corrosion.
B. Check for loose battery tie-downs.
C. Visually inspect for any cracks or damage to the casing.
2. Charger
A. Inspect wire connections.
B. Check power cord for nicks/damage.
C. Check charger for proper mounting.
3. Hydraulic System
A. Inspect pump and cylinder for oil leaks.
B. Check hy draulic oil level. Unscrew breather plug on power unit with forks platform fluid will be ½ - ¾ of an
inch from opening all the way down.
C. Check hy draulic fittings and hoses.
4. Frame Assembly
A. Check floor lock.
B. Check placement of safety screen.
C. Check chain roller assembly.
D. Check for any worn or damaged parts.
SECTION 5
MAINTENANCE
INSTRUCTIONS:
A.
• Grease wheels and casters at least once a month to maintain easy roll of lift.
• Use only Hydraulic Oil (or #10 Motor Oil) in the hydraulic system. NEVER USE HYDRAULIC BRAKE FLUID.
• Do not overload your lift.
MONTHLY MAINTENANCE CHECKS:
B.
1. Battery
A. Clean terminals.
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B. Clean battery compartment area.
C. Check specific gravity -- fully charged battery should read 1265.
D. Check fluid level in all cells. Fill with distilled water as necessary to bring fluid to within ¾” of the top.
2. Hydraulic System
A. Clean and inspect hydraulic cylinder.
B. Lubricate chains with a rust inhibitive chain lubricant.
C. Check chain tension. The chains should be tight enough so that they do not come off the chain roller
assembly. The tension should be adjusted so that the chains bear equal amounts of load weight.
3. Frame Assembly
A. Clean and lubricate all roller bearings and cam followers.
B. Clean and inspect all welds.
C. Check wheels for wear and damage.
D. Inspect nameplate for legibility. Place the serial and model number shown on the nameplate on the cover of
the manual for future reference.
SECTION 6
SERVICE
IF LIFT DOES NOT RISE TO FULL HEIGHT -- check for leaks or shortage of oil. Maintain the proper oil level.
IF THE LIFT TENDS TO CREEP DOWNWARD UNDER A LOAD -- a speck of dirt may be obstructing the seating
of the valve and allowing leakage. To correct, follow these instructions:
• Raise lift to full lifting height and then lower it to lowest point of lift. It may be necessary to do this five or six
times. In lowering the lift, lower it in stages, that is, lower the lift six inches to a foot at a time. This will dislodge
the dirt and lift will operate properly.
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