Nihon Bisoh Co.,Ltd. BISOMAC210 3Phase MM2014/11
KH-2014008 Rev.4
45
9. TROUBLESHOOTING AT JOB SITE
[Mishandling]
This section describes possible troubles caused by mishandling and solutions for such
troubles.
WARNING
If the hoist does not get back its normal condition even following solutions (Case I-VIII)
have been attempted, contact local distributor and replace.
Repairs and corrective actions shall be performed only by authorized and properly trained
personnel. Improper repairs and corrective actions may cause serious accidents.
Case
Ⅰ
The hoist does not run.
Possible cause
Solution
1. Power is off.
2. Emergency Stop Switch is activated.
3. Overcurrent protection is activated due to
overloading to the platform.
4. Reverse phase detector is activated.
1. Connect AC power plug properly.
2. Check the indicator lamp and deactivate
Emergency Stop Switch.
3. Unload from the platform.
4. Check the phase and connect correctly.
Case
Ⅱ
The hoist runs and able to descend but unable to ascend or ascend but pumps.
Possible cause
Solution
1. BISOLOAD is disconnected.
2. BISOLOAD is activated due to
overloading
3. Insufficient voltage.
4. Power cable is too long or too small.
1. Connect BISOLOAD properly.
2. Check Overload indicator lamp and unload
from the platform.
3. Check Voltage meter if sufficient voltage is
supplied.
4. Replace power cable to shorter or thicker one.
