4.5 EMERGENCY LOWERING
WARNING: Carrying out an "emergency descent", the mechanical fall-proof safeties are excluded.
Therefore the following operations must be carried out only:
• When the lift does not lower due to a damage in the electric system or to an electricity failure;
• When it is strictly necessary;
• By a qualified technician;
• Delimiting the area around the lift and permitting access to the operator only.
For the emergency lowering proceed as follows:
• Press the EMERGENCY/OFF pushbutton (17 Fig. 3).
• If the lift is in stand-by position, the safety devices will not open. The following operations will then be only possible if the lift is equipped
with a manual emergency pump to lift the platforms and release the mechanical safety devices.
• If the lift does not lower because of an electrical break down or lack of electrical supply inside the cross beams, inserting between the 4
electromagnets (1 Fig. 13) and theyr0 pushing brackets (2 Fig. 13) a spacer of suitable height (3 Fig. 13), so that the safety wedge (4 Fig.
13) can not enter into the safety rod holes (5 Fig. 13).
• Proceed with the manual lowering unscrewing very slowly the knurled screw of the hydraulic unit valve. Screwing or unscrewing the screw
(1 Fig. 14) increases or decreases the platforms lowering speed.
• When the operation is finished, screw-in completely the knurled screw (1 Fig. 14) and take out the spacers (3 Fig. 13).
DANGER: It is necessary to take off the safety device exclusion spacer (3 Fig. 13) to work safety with the lift.
31