Big Dutchman Dry Rapid DR 1500, Mounting And Operating Instructions

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Page 60
Drive unit
DR 1500
Edition: 08/10 M 4021 GB
9 Drive unit
9.1 Assembly and operation
The driving wheel (pos. 1) is directly driven by the gear motor (pos. 2). The tensioning
wheel (pos. 3) is bedded on a rider (pos. 4) that is tensioned by springs (pos. 5).
During operation, the correct initial tension is controlled by a limit switch (pos. 6). The
limit switch immediately stops the drive unit, if the tension on the rope / chain increases
too much and the rope or chain streches too much.
The limit switch (pos. 7) fulfils the function of a safety switch. It switches
off the drive, as soon as the cover is opened.