Manual

22
Lift does not lower, or lowers
very slowly.
• Make sure the inlet, outlet, and exhaust lines are
connected to the correct ports on the hand or
foot control valve.
• It may be that an obstruction was introduced into
the system during installation. Check for
obstructions at the outlet of the control valve, in
the exhaust line from the control valve (if
applicable), or in the connecting hose to the lift.
• Make sure the if the lift was raised and blocked
open for maintenance that the flip-over
maintenance locks were removed from the path
of the lift rollers and placed back in the “home”
position.
PROBLEM POSSIBLE CAUSE AND SOLUTION
Lift raises very slowly. • The primary cause of slow actuation in air-
powered systems is a lack of air volume (cubic
feet per minute (CFM) to the lift. Determine the
air volume of the air supply system/ compressor.
For the lift to operate at reasonable speeds (20-
30 seconds raising time), the lift needs to have a
minimum of five CFM.
• Make sure all connections are tight and that no
leaks are occurring in the system.
• It may be that an obstruction was introduced into
the system during installation. Check for
obstructions at the inlet of the control valve, in
the connecting hose to the lift, and at the
restrictor in the bottom of the air bag.
TROUBLESHOOTING ANALYSIS