Malfunctions And Their Causes - Columbus McKinnon Pfaff HU ES 10 A Mode D'emploi

Scissor pallet truck HU ES 10 A
English
Setting the lowering valve
1. Pump the scissor pallet truck to the raised position (control lever position .
2. Set the control lever to the transporting position (lever in middle position ).
3. Set the drawbar to vertical position.
4. Loose the check nut 1.
5. Turn the adjusting screw 2 slowly in clockwise direction until the fork lowers.
6. As soon as the fork lowers turn the adjusting screw 2 one half, turn in counter-
clockwise direction.
7. Tighten the check nut 1.
8. The lowering of the fork must now be possible in every position of the tie bar.

Malfunctions and their causes

Failure
Motor and hydraulic pump does
not operate
The scissor pallet truck does not
lift the load, although the pump is
working perfectly
The scissor pallet truck does not
lower the load when pressing the
„Down" switch
Raised load is lowered of its own
Oil loss on hydraulic cylinder
The raised load is lowered too
slowly
Fork does not raise till upper
position
Battery capacity to low
Battery can not be charged
Too early battery discharge
Disposal:
After placing out of service, the scissor pallet truck parts must be disposed of or
recycled in accordance with legal provisions.
technische Änderungen vorbehalten
Cause
Defective fuse
Loose or unconnected plug
Motor is burned out
Up-Down switch defective
Load is too heavy, the overload valve is
actuated by overload
Lowering valve does not close any more or the
valve face is not sealed because of dirt
Electric circuit is disconnected
Electromagnetic valve does not work
Electromagnetic switch is defective
Up/Down switch is obstructed resp. defective
Hydraulic pump does not work
Defective wiring to the contactor or motor
Electromagnetic valve does not work
The fork or other parts are obstructed
Leakage in the hydraulic system
Lowering valve does not close any more or the
valve unit is not sealed because of dirt
Incorrect valve set-up.
Pressure relief valve (pump) is leaky (pump
turns slowly backwards.)
Sealing elements are worn
Temperature too low – the hydraulic system oil
is too thick
Insufficient oil in the tank
Battery discharged
Limit switch is not positioned
Battery is not charged enough
Battery is defective
Fuse is defective
Battery resp. charger defective
Silted battery
Sulphating or other failure in the battery.
Accidental earth contact in the electric system or
battery.
design changes under reserve
F 08.01.151
Elimination
Replace the fuse
Reconnect
Replace motor
Replace switch
Reduce the load
Clean or replace it
Check the wiring
Check valve and it's wiring
Replace switch
Check resp. replace the switch
Check the pump
Repair
Check valve and it's wiring
Check all moving parts
Seal!
Clean or replace
Adjust lowering valve
Clean or replace the valve
Replace sealing elements
Find a warmer location
Refill with oil (while the fork is lowered)
Charge the battery
Reposition the limit switch
Recharge
Replace the battery
Replace fuse
Replace battery resp. charger
Replace battery
Replace battery
Repair or replace battery
changements techniques sous réserve
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