GM
Worm-wheel operator Type GM 1200-2650
The operator:
Gear box with irreversible worm and worm-wheel. Two shafts with free ends, the wormwheel of special bronze and worm are equipped with ball bearings for noiseless operation. The worm-wheel of special bronze and worm are equipped with ball bearings for noiseless operation. The standard version has 30 revolutions at the drive 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 limit switch
On the reduction is a box mounted with limit switch ES10, this can be connected with a separate controller which can be chosen out of the LST/WST range. The limit switch consist out of a potential free switch, a control current limit switch for the end positions and a safety switch for each side of rotation.
The Emergency chain operation
The RKG is mounted in front of the engine for a horizontal or vertical placement. Only one chain for manual operation. 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.
NSA-RS
Folding door operator Type NSA-RS
Compact unit of a robust welded structure, with built-in irreversible worm wheel reduction gear with spur wheel step, 3-phase AC-motor with coiled-in thermal protection. Drive shaft with double-sided drive arm, limit switch system and adjustable patented torque limiter between motor and reduction gear. This means that as soon as the motor stops – independent of door position – the irreversible worm gear locks the drive arm and thus the door leaves. A quick release by handle or – at option – by a pull cable control enables a manual operation of the door.
The limit switch
On the reduction is a box mounted with limit switch ES10, this can be connected with a separate controller which can be chosen out of the LST/WST range. 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.
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ROLLER DOORS
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