Manual

PROBLEM POSSIBLE CAUSE AND SOLUTION

Lift seems bouncy during

operation.

• Lower the lift to collapsed position and continue to

hold “DOWN” button an additional 10-30 seconds to

bleed air from the cylinder. Do not confuse spongy

or jerky operation with small surges that may occur

when operating on rough or uneven floors

• Check for oil starvation.

Motor labors or heats

excessively.

• The voltage may be low. Check at the motor

terminals while the pump is running loaded, not at

the line source or while the pump is idling.

Inadequate wiring can starve the motor even when

the source voltage is ample.

• Most of Autoquip’s standard motors are rated for

intermittent duty (two minute run times with two

minute rests). If a single-phase motor is being run

more than 15 – 20 motor starts per hour, or a 3-

phase motor more than 200 starts per hour, the

problem may be motor over-heating.

• Running against relief pressure unnecessarily due to

over loaded lift or hitting physical stops.

• Failure to observe wiring diagram on nameplate for

proper voltage connections.

• The pump may be binding from oil starvation, which

develops high internal heat. Check for low oil level

or closed breather holes in the reservoir fill plug.

The pump can be irreparably damaged by oil

starvation and may have to be replaced.

TROUBLESHOOTING ANAL

YSIS