Presto Lifts Power Stak PPS3000-125FS, Инструкция по установке, эксплуатации и обслуживанию

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PRESTO OWNER’S MANUAL Page 10 POWER STAK PPS3000-125FS
A.
WEEKLY OPERATIONS
MAINTENANCE CHECKS:
1. DAMAGE: Check for bent, dented, worn or broken
parts.
2. LIFT SYSTEM: Check to assure that there is no bind-
ing or excessive play in the forks. Check for quiet and
smooth operation of the lift cylinder. Check all moving
parts and linkage.
3. LEAKS: Check hydraulic system for leaks and hydraulic
oil level.
4. WHEELS AND CASTERS:
Check for wear and that
they are turning smoothly.
5. LIFT CHAINS: Check to see that they are in place and
not loose.
6. FORKS: Check that they are not bent or cracked.
7. BRAKES:
Ensure brakes work properly.
8. CABLES; WIRES: Check that there are no loose cables
or wires.
9. LABELS: Ensure all precautionary labels and guards
are in place.
B.
MONTHLY OPERATIONS
MAINTENANCE CHECKS:
1. Battery (maintenance free)
A. Clean terminals.
B. Clean battery compartment area if there are signs
of corrosion.
2. Hydraulic System
A. Clean and inspect hydraulic cylinder.
B. Lubricate chain with a rust inhibitive lubricant
(light machine oil).
C. Check chain tension. It should be even on both
chains. The chain should be tight enough so that
it does not come off of the roller assembly.
3. Frame Assembly
A. Clean and lubricate all roller bearings, cam fol-
lowers and all moving parts.
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.
4. Electrical
A. Check batteries, motors, controllers, limit switches,
electrical conductors and connections.
CAUTION:
DO NOT USE LIFT IF IT IS NOT OPERATING
PROPERLY, OR APPEARS UNSAFE IN ANY WAY!
S E C T I O N 7
TROUBLESHOOTING
Before starting the troubleshooting, you have to:
A. Put the truck on an even and solid surface.
B. Turn off key switch or disconnect the battery termi-
nals.
1. Unit will not lift (motor does not run)
• Faulty wiring from fuse to lift switch in handle
• Faulty lift switch
• Faulty wiring from battery positive terminal to pump
contactor to pump motor
• Burned out brushes in pump motor
• Low hydraulic pressure caused by:
¨ Pressure relief valve needs adjustment
¨ Pump check valve stuck open
¨ Faulty solenoid valve
• Faulty wiring from lift switch to solenoid
• Faulty lift contactor
• Defective control circuit fuse
• Chain or roller bound
• Check oil level
2. Forks will not lower
• Look for binding in chains or rollers
3. No electrical power
Dead Batteries:
¨ Key switch on “OFF” position
¨ E-stop button depressed
¨ Loose or dirty battery connections
¨ Blown fuse(s)
• Faulty wiring from fuse to travel control switch
• Faulty control switch
• Faulty wiring from travel control switch direction con
-
tactor
• Faulty contactor
4. No Traction
•
Check to insure base legs are torqued properly.