ļ Lifting actuator:
WARNING: NOT TO BE CARRIED OUT WITHOUT MANUFACTURERāS AGREEMENT
If all of the hydraulic power sources are out of order, the elevator mast can be lowered using the
actuator control screws.
The mast will descend as soon as hydraulic oil has passed through the control system.
CAUTION: THE GREATER THE UNSCREWING ACTION, THE GREATER THE RATE OF
DESCENT. UNCONTROLLED UNSCREWING OF THE SCREW CAN LEAD TO THE ABRUPT
LOWERING OF THE BOOM, CAUSING SERIOUS INJURIES OR EVEN DEATH.
THIS CAN BE A DANGEROUS OPERATION AND THE OPERATOR PERFORMING THE
MANEUVER MUST MAKE SURE THERE IS NO OBSTACLE IN THE DESCENT CURVE OF
THE BOOM, AND UNSCREW THE CONTROL SCREW SLOWLY.
To lower the main mast onto the lifting actuator, unlock the lock nut using a 17 mm open end
wrench, turning the screw by 1/4 turn (counterclockwise) using a 5 mm hexagon head wrench and
actuating the āDOWNā distributor.
Release the distributor to stop the movement.
AFTER USING THIS PROCEDURE, BE SURE TO HAVE QUALIFIED PERSONNEL ADJUST
THE ACTUATOR CONTROLS BEFORE THE LIFT IS USED AGAIN.
Lock nut
Driving screw
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