User's Manual

SECTION 10. TROUBLESHOOTING HINTS
Warning! Only qualified service personnel shall be allowed to perform service work on
pneumatic lifts. The service person shall be familiar with this manual before attempting
any service on the lift.
Warning! No work shall be performed beneath a raised lift platform unless the safety
leg or maintenance blocks are installed in accordance with Section 6 of this manual
UNIT WILL NOT LIFT
1. Reduce load to rated capacity.
2. A small amount of debris may be stuck in the control valve. Disassemble the air
valve and clean.
3. Confirm correct air pressure supply; refer to Section 5 for correct operating pressure.
4. Check air lines for kinks or damage.
5. Inspect lift for physical damages that may be causing binding and restricting travel.
UNIT WILL NOT LOWER
Danger! If a lift fails to lower when the valve is actuated yet air is being relieved from the
valve great caution must be exercised. Air spring tables are slower to react than
hydraulic lifts and mechanical binding or debris may be restricting the lifts travel. If the
binding or debris is removed before the table is raised, the table may drop suddenly.
1. An object or debris may be blocking the rollers from moving. Caution! Do not attempt
to remove an obstruction without first raising the unit to full height and inserting the
maintenance blocks, See page 6-3 for instructions.
2. The air control valve may be malfunctioning, raise the unit and install the
maintenance blocks, then disassemble and clean the valve components.
P 10-1