Direct Lift PRO9D - Manual (Page 15)

PRO 9D Two-Column Automotive Lift
14
Monthly Maintenance:
1. With lift lowered check the hydraulic fluid level. If necessary add oil as described in the
Installation Instruction section of this manual
2. Check carriage latch synching: Latches should click at the same time. If necessary adjust
cables as described in the Installation Instruction section of this manual.
3. Check tightness of all bolts.
4. Check anchor bolt tightness. If the anchor bolts are loose, they should be re-torqued to
90ft/lbs.
• Check the nuts for tightness every week for the first month, and every month
afterwards.
5. Replace worn or broken parts only with lift manufacturer’s parts, or their equivalent.
Troubleshooting:
1. The power unit does not run:
• Check electrical supply breaker, or fuse.
• Check micro-switch and connections in motor control box.
• Check voltage to the motor.
2. The power unit runs but does not raise the lift:
• Check the oil level.
• Check that the lowering valve is not stuck open.
• Check the connections and components on the suction side of the pump.
3. The power unit raises the lift empty, but will not lift a vehicle.
• Make sure the vehicle is not above the rated capacity of the lift.
• Make sure the vehicle is positioned properly.
• Clean the lowering valve by running the power unit for 30 seconds while holding the
lowering valve open.
• Check the motor voltage.
4. Lift drifts down.
• Check for external leaks.
• Clean the lowering valve by running the power unit for 30 seconds while holding the
lowering valve open. Repeat this procedure three times.
• Clean the check valve seat.
5. Slow Lifting and/or oil foaming up.
• Check that oil used meets the specification in the Installation Instruction section of this
manual.
• Tighten all suction line fittings.