Page 4-3
Troubleshooting 4.3 - Troubleshooting Guide
503727-002
TROUBLE PROBABLE CAUSE REMEDY
1. Blown electric motor fuse Check 160 amp electric motor fuse. Replace if blown.
2. Faulty battery Check the voltage output of the battery charger. If less than 24 VDC,
charger.
3. Faulty battery(ies). After completely charging batteries, test each battery. Replace as
4. Loose or broken Check continuity of all battery and motor leads. Replace if necessary.
battery lead.
5. Emergency Stop With emergency stop switch in the ON position, check continuity
switch(es) failed open.
6. Blown control fuse Check 7A circuit control fuse. Replace if blown.
1. Oil level in hydraulic Check hydraulic fluid level, top off as required.
reservoir is low.
2. Faulty hydraulic Check pressure and delivery of the hydraulic pump. Replace if
pump.
1. Emergency Close emergency
Lowering valve down valve.
open.
2. Platform Observe maximum load rating. (see Operation section of this manual)
overloaded.
3. Faulty controller at Check functionality of controller. Replace if faulty.
upper controls.
4. Blown control fuse Check 7A circuit contrrol fuse. Replace if blown.
5. Battery level low. Check Battery Voltage. Charge if necessary.
Check for fault code 68
1. Emergency Ensure that emergency lowering valve is completely closed. Replace
lowering valve
open.
2. Leaking piston Check for leakage at cylinder return line, replace seals if necessary.
seals in lift
cylinders
All functions
inoperable,
electric motor
does not start.
All functions
inoperable.
Electric motor
starts when
control is
actuated.
Platform will not
elevate or
elevates slowly.
Platform drifts
down after being
elevated
4.3 TROUBLESHOOTING GUIDE
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