15
CAUTION
●
Identify any abnormalities during operation and take appropriate corrective action outlined in this
maintenance manual. Do not operate the unit until corrective action has been taken.
Refer to Table 8-1 whenever the reducer is operating abnormally and take the appropriate corrective action im-
mediately . Consult factory if not recovered.
Table 8-1 Troubleshooting Guide
Symptom
Cause
Measure
The output shaft does not rotate
at no-load.
Damage to gear/shaft due to over load Confer with authorized service station.
The output
shaft rotates at
no-load.
When load is
applied, the
output shaft
stops.
The key is missing.
Install a key.
The bearing is burned.
Confer with authorized service station.
Poor adjustment of protective device
Adjust the protect device.
Rotates in reverse. Wiring error
Wire correctly.
Excessive temperature rise
Overload
Decrease the load to the specified
value.
Damage to bearing
Confer with authorized service station.
The ambient temperature is high.
Improve the ventilation.
Damage to gear/bearing due to over
load
Confer with authorized service station.
Oil leakage
Oil leaks from
the input/out-
put shaft.
Damage to oil seal
Confer with authorized service station.
Scratches or abrasion on the shaft
where the sealing lip touches
Confer with authorized service station.
Oil leaks from
the split line of
housing.
Loose bolt
Tighten the bolt to proper torque.
Abnormal sound
Excessive vibration
Damage to gear/shaft/bearing
Confer with authorized service station.
Housing is deformed due to uneven
installation surface.
Flatten the installation surface or use
liners for adjustment.
Resonance due to insufficient rigidity
of installation base
Reinforce the installation base to im-
prove the rigidity.
Misalignment with driven machine
Align the shaft center.
Vibration of driven machine transmit-
ted to the reducer
Operate the reducer alone to check the
noise source.
8. Troubleshooting
