Service

Troubleshooting

Hydraulic Lift Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
Pump runs but not at Low voltage to pump Check voltage. Increase power supply full speed. Low voltage to pump Check voltage. Increase power supply Wire size. See chart A
Pump runs but the platform won't go up or down Couplers not mated properly Recheck couplings making sure they are properly mated and locked together.
Unit rises slowly Low voltage to pump Have wiring checked for proper size from power source.
Unit is overloaded Remove load. Check travel speed without load. Weigh load to see if load is within limits of the hoist capacity.
Load on hoist is within hoist rated load Pressure relief valve may be set to low. Contact local dealer to have the pressure checked and the valve reset.
Platform will not lower Hose coupling are not fully connected Recheck couplings making sure they are completely snapped together. Replace if needed.
Push-button controller is not making proper connection Check the connection between the controller and the pump unit. If problem is in the controller, contact your dealer.
Solenoid is not pulling the spool valve open Check solenoid, place screwdriver on nut of solenoid. Operate pump. Magnetism in solenoid will draw screwdriver if operating properly. Spool valve maybe stuck. Tap lightly on hex nut and spool valve located on face of solenoid. Retry, if it fails. Remove nut, solenoid and spool valve. Insert small phillips screwdriver into end of valve. Compress moving internal portion of valve 1/4". Repeat several times. Reinstall. Contact your dealer.
Low voltage AC units must have 110 volts while motor is running. DC units must have 12 volts in battery.
Platform drifts down Oil is seeping past the lift cylinder in the lift tube or a control valve. Contact your dealer.
Contamination in the oil Flush the hydraulic system removing contamination. Refill with proper weight & grade of oil. See oil specifications.
Air in system Cycle system until air is removed. Re-check oil level in reservoir.
When controller is in ON position, platform doesn't rise to the full UP position Micro switch malfunction on hydraulic cylinder Contact your dealer.
When controller is ON Pump continues to run when platform is completely raised. Micro switch malfunction on hydraulic cylinder Contact your dealer.
Pump makes squealing noise while running Air in system Raise & lower platform several times without load to remove trapped air. If squeal continues, contact your dealer.
AC Powered Lifts - Electrical Powered Pump Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
Pump will not run Circuit breaker in electrical panel not engaged Engage circuit breaker
Cord not plugged in Plug in cord
Loose wire connection Check that all connections are tight.
GFCI not reset Reset GFCI by pushing the reset button on the GFCI. If GFCI won't stay engaged, replace. See item D under General AC Electrical Items.
Low voltage to unit Check voltage. Proper voltage is critical to pump operation. Voltage should read 110 volts when the motor is running. If low, the unit will require heavier wire from the power source to the unit.
Push-button control pendent not properly connected. Check connection to the pump unit. Make sure the plugs are properly mated and locked together by turning the locking ring clockwise.
DC Powered Lifts - Electrical Powered Pump Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
Pump won't run. Battery dead. Check charge in battery. Recharge if necessary.
Improperly sized battery See General DC Electrical Items for Battery specifications.
In-line fuse may be blown. (Located in the line when using boat battery) Check and replace if bad.
Bad connections. Either loose or corroded. Tighten all connections. Clean if corroded.
Bad ground connection Make sure the ground connections on both the motor and battery are tight and not corroded.
Push-button controller not properly connected. Check connection to the pump unit. Make sure the plugs are properly mated and locked together by turning the lock ring clockwise.