OZ Lifting Products OZ Builder's Hoist OM - Manual (Page 10)

Braking and Winding Devices
BRAKING
• Braking is via a mechanical brake and an electronic generated brake. The brake distance from time of
braking until stopping completely should be within 1.5 % of rope length wound during 1 minute.
This can be determined by simply timing the amount of rope that is wound in 1 minute and calculated by
1.5%.
• The rope speed with no load is faster than that with the rated load. The brake distance with no load will be
longer, but still within 1.5% of rope length
OVER-WINDING LIFT PREVENTION DEVICE
• A special mechanism prevents over-winding when lifting. When the swivel hook touches the limit lever,
lifting is automatically stopped.
• If the limit lever is set too close to the hoist body, it will cause serious damage to the limit lever and hoist
body.
• A suggested distance(s) between the limit lever and hoist body is as follows:
REVERSE-WINDING PREVENTION DEVICE
A special mechanism prevents reverse over-winding:
• When lowering if the rope is fully extended, this device will cause the wire rope to shift its position from
the front, toward the back.
• To disengage this device the wire rope needs to be shifted back to the front position. To do this pull and
hold the rope downward and press the button.
pg.10
Product # OBH-500
Distance 3.14” - 3.93”