WH

The operator:
Self-Locking worm-wheel operator with integrated brake system. Two shafts with free ends. The limit switch shaft with its own drive worm is integrated in the gear box and runs in oil.
The worm-wheel of special bronze and worm are equipped with ball bearings for noiseless operation. It has standard a range of 33 rotations of the main shaft.
The AC motor is directly with standard voltage 3-phase AC 230/400 V. (special voltage at options). All protruding shaft ends are sealed against oil leakage, so the unit can be mounted in any position: the horizontal position is recommended.

The control box:
The control box is mounted on the drive section and is built according to VDE guidelines.
Control voltage 24 V. Auxiliary push buttons open – close for operation during mounting. Possibility of connection of remote controls of any kind, safety rail control, photocells etc. Auxiliary push buttons open – close for operation during mounting. The operator can also be equipped with a limit switch system ES10. The limit circuit then consists of a potential-free limit switch, a control current limit switch for determining the end positions and a safety switch for each direction of rotation.
The standard version also includes an emergency crank with electric emergency crank protection.

The Emergency chain operation
This can be either lateral to the drive (KNG) or positioned at the front of the motor (RKG).
Both for horizontal or vertical mounting. It is operated by means of a reel chain. Switching on and off of the braking system is by means of a separate chain. The integrated security switch avoids that the engine starts during the emergency operation. During the use of the emergency unit the end positions continue preserve.

Maintenance:
The drives are maintenance-free. Lifetime lubrication makes every oil change unnecessary. Adjusting the brake is basically not necessary.