Operation And Use
42
12ASL
8.4
Manual Emergency Lowering
In case of an emergency the runways or wheel free jacks can be lowered manually
to its initial position as follows referring to the Figure 25 and the Figure 26:
After manual lowering of the lift, reset ordinary operating
conditions. Lift cannot be lifted if unloading valve is opened.
• Padlock the power switch;
• Open the front cover of the control unit;
• Operate the emergency hand pump (1) to raise the lift a little bit to clear
off the mechanical safeties;
• Keep pressing the emergency button (3) on the solenoid air valve in the
control unit;
• Unloosen the emergency screw (2) anti-clockwise to lower the lift. Tightening
or loosening the screw can reduce or increase the lowering speed;
• Re-tighten the emergency screw by screwing it clockwise after lowering the
lift completely.
Tip: when a mechanical safety is released, it is advised to use
a carton board to put between the safety pawl and the rack to
avoid it from engaging. In this case, do not need to press the
emergency button continuously.
Screwing or loosing the screw can reduce or increase the
lowering speed. After manual lowering of the lift, reset
ordinary operating conditions. Lift cannot be lifted if solenoid
valves are opened
