User`s manual

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User’s Manual
4.8.2 Trapped-key Interlock System
The Trapped-key Interlock System uses a system of
security locks installed on the fences. These locks can
be opened by using a key placed into the lift.
The key also activates the On/Off general switch
placed into the service lift cabin. The key is linked to
the lift by means of a wire rope, and can not be
detached from it except using cutting tools.
The key cannot be taken out from the On/Off general
switch in the lift, unless it is in Off position, and
therefore, the lift is stopped. In the same way, the key
cannot be taken out from the fence lock unless the
fence door is closed, and the door actuator is put into
the door lock.
The fences remain closed and locked until the service
lift is stopped on the platform, and the key is trans-
ferred from the lift cabin to the fence lock.
Consult the AVANTI Trapped-key Interlock System
Manual for further information.
Stop switch,
normal
operation
Emergency
stop switch
Fig. 11a
Fig. 10
Fig. 11b
Bottom safety stop
Door limit stop switch
(In door frame)
EMERGENCY
STOP button
Fig. 12
Fig. 13
Fig. 14
Trapped-key switch
Key Security lock on fence
Actuator