Emergency Lowering - Corghi Erco 4004 Manuel D'utilisation

5.5 EMERGENCY LOWERING

WARNING: When an "emergency lowering" of the carriages is carried out, the mechanical fall-prevention safety locks of the car-
riage are cut-off.
The following operations shall thus be carried out only:
• When lift does not go down due to a power failure or in case of power cut-off;
• In case of absolute need;
• By a single qualified operator;
• If the lift area is delimited and made accessible to a single operator.
Emergency lowering procedure:
• Turn EMERGENCY SWITCH/DISCONNECTOR (17, Fig. 1) to 0 (OFF).
• If the lift is in the braking position, the safety locks will not open. The following operations will be possible only if the lift features an emergency manual
pump to be used to raise the runways to release the mechanical safety locks.
• If the lift is not lowered as a result of an electrical failure or of a blackout, the safety locks within the crossbeams should be manually cut-off by opening
the four electromagnets (1, Fig. 28) with a shim (3, Fig. 28) of the proper height so that the safety lock wedge (2, Fig. 28) cannot get into the holes of the
safety bar (9, Fig. 10).
• Proceed with a manual lowering manoeuvre as follows:
• Fully remove EV1 solenoid valve cover (1, Fig. 29), and then press needle (2, Fig. 30) very slowly to move runways down.
• Once this operation is completed, fully screw solenoid valve cover (1, Fig. 30).
• Finally remove the shims (3, Fig. 28).
DANGER: Remove the shim (3, Fig. 28) cutting off the safety locks to work safely with the lift.
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