Becker a100/25, Assembly And Operating Instructions Manual

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(applies to cam-operated limit switching)
The door must not be moved beyond the limit positions as otherwise a safety limit switch
(S1F/S2F) is activated. If activated, electrical operation of the door system is only possible
when the safety limit switch (S1F/S2F) is “released” via emergency manual operation.
2 different systems are available for emergency manual operation:
• Crank handle (HK)
• Light chain (LK)
For each type of emergency manual override system, an appropriate notice (as per
EN60335-2-103) must be permanently placed in the vicinity of the corresponding operat-
ing element describing how it is to be used. Stickers for use as notices which are appropri-
ate to the drive are included within the scope of delivery.
Crank handle (HK)
1.
2.
Operation
Remove the cover by turning it anticlockwise (1.) first, and then lifting it off (2.).
For emergency manual operation, the crank handle is inserted in the motor shaft.
The crank handle must firstly be snapped onto the motor shaft by applying slight
pressure (3.) and turning carefully (4.). Following this, proper emergency manual op-
eration with the crank handle is possible.
The door can then be opened or closed with the crank handle by turning whilst apply-
ing slight pressure.
In order to prevent electrical operation of the door system during emergency manual
operation, the safety switch S3F is opened upon insertion of the crank handle.
Attention! Following operation, the crank handle must be completely removed
once more to allow electrical operation of the door system to resume. Once
the crank handle has been removed, the cover must be refitted in a clockwise
direction in order to maintain the drive's degree of protection. Make sure that
it clicks audibly into place.
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3.
4.
Light chain (LK)
In the case of horizontal drive installation
1.
2.
Installation of the chain wheel
Mount the chain on the chain wheel so that there is roughly the same number of chain
links overhanging on both sides (1.). Then feed the two ends of the chain fully
between the deflection pulleys and the coupling shaft (2.).
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