Hunter RL - Troubleshooting; Troubleshooting Chart

RL, RLHD OPERATION MANUAL 6. Troubleshooting  19
6. Troubleshooting
6.1 Troubleshooting Chart
PROBLEM
POSSIBLE CAUSE
SOLUTION
Lift does not operate.
“POWER” switch in “OFF” position.
Rotate switch to “ON” position.
“POWER” switch in “RUN”, “RUN” light
not on.
Rotate switch to “ON” position.
Circuit breaker or fuse blown in shop
power panel.
Locate shop power panel and restore
power.
If overload repeats due to lift operation,
contact factory service representative.
Self test failure.
Contact factory service representative.
Electrical malfunction in control console.
Contact factory service representative.
Hydraulic system malfunction.
Contact factory service representative.
“RAISE” button depressed,
motor runs but lift will not
rise to full height.
Low hydraulic fluid level in reservoir.
Lower lift.
Turn OFF shop power.
Remove control console rear panel.
Check hydraulic fluid level and fill.
Determine reason for low hydraulic fluid
level. Replace cover.
Overhead obstruction to vehicle.
Lower lift and remove obstruction.
Voltage supply low.
Contact factory service representative.
Hydraulic system malfunction.
Contact factory service representative.
“RAISE” button depressed,
motor runs but lift does not
move.
4-way valve manually operated.
Turn OFF shop power.
Remove control console rear panel.
Depress 4–way valve manual override
knob and turn clockwise into detent
position. Replace rear panel.
Vehicle is beyond capacity {8,000 lb.
(3628 kg) for RL, 16,000lb. (7256 kg)
for RLHD}
Do not attempt to lift vehicles in excess
of: 8,000 lb. (3628 kg) for RL, 16,000 lb.
(7256 kg) for RLHD.
Electrical/Hydraulic control malfunction.
Contact factory service representative.
Runways continue to rise
after “RAISE” button is
released.
Electrical control malfunction.
Turn OFF “POWER” switch.
Turn OFF shop power.
Contact factory service representative.