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4.2.2.2. The manual control
4.2.2.2.1. The control with use of the chain gearbox
The motor drives of the series Shaft are equipped with a manual chain gearbox, which is used
in cases of emergency opening/closing the door when disconnecting the power supply.
Extend or shorten the chain so that in the assembled condition its end would be at the height of
50-150 cm from the floor surface. It is recommended to fix the lower part of the chain, so that it
does not interfere with movement of the people and equipment. In addition, attach in a
prominent location the warning labels indicating the direction of opening and closing. In order to
bring the door in motion, pull down the chain (Fig. 2).
Fig. 2. The door control with use of a manual chain gearbox
THE CONTINUOUS USE OF THE MANUAL CHAIN GEARBOX IS
PROHIBITED. THE USE IS PERMITTED ONLY IN AN EMERGENCY!
OTHERWISE, IT MAY DAMAGE THE CHAIN GEARBOX!
BEFORE USING THE MANUAL CHAIN GEARBOX, MAKE SURE THAT
THE CHAIN LINKS ARE NOT DEFORMED OR DIRTY. OTHERWISE,
THE USE OF THE GEARBOX MAY CAUSE ITS JAMMING.
4.2.2.2.2. The use of the releaser
4.2.2.2.2.1. The drive Shaft-30/60
If necessary, the drive can be unlocked with use of the lever of the built-in releaser.
a b
Fig. 3. Bringing up the drive Shaft-30/60 in manual and automatic mode
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