Nihon Bisoh Co.,Ltd. BISOMAC210 3Phase MM2014/11
KH-2014008 Rev.4
46
Case
Ⅲ
Motor runs normally but wire rope is not winded.
Possible cause
Solution
1. Poor bullet.
2. Wire rope is kinked or deformed.
3. Dirt or other material is obstructing inside
or rope exit of the hoist.
1. Retouch rope end as instructed. (7.2.2)
2. Stop operating and replace wire rope
immediately.
3. Clean out rope exit.
Case
Ⅳ
The hoist reeves wire rope but the platform is not lifted.
Possible cause
Solution
1. Improper wire rope is used.
2. Defective wire rope (worn out, broken
wire, deformation, etc.)
1. Replace with designated wire rope. (2.4)
2. Replace with normal wire rope.
Case
Ⅴ
Lifting speed is too slow.
Possible cause
Solution
1. Insufficient voltage.
2. Defective wire rope (worn out, broken
wire, deformation, etc.)
1. Replace power cable with proper one or
supply sufficient voltage. (2.1)
2. Replace with normal wire rope.
Case
Ⅵ
Unusual noises come from the hoist and/or the safety device.
Possible cause
Solution
1. Insufficient oil in Gear box.
2. Damaged or broken gears.
3. Contamination inside the hoist or the
devices.
4. Defect inside the hoist or the devices.
5. Loosened bolts and nuts.
6. Improper wire rope is used.
1-4. Replace the hoist.
5. Check and tighten each bolt and nut.
6. Replace with designated wire rope.(2.3)
