Chapter
8 Maintenance and Inspection
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Chapter 8
Maintenance and Inspection
This chapter describes how to perform maintenance and inspection.
8.1. Precautions on maintenance
Keep away from the rotation section during maintenance/inspection of the device currently in
operation. Otherwise, you could be caught by the rotation section, which will result in serious injury.
If any abnormalities, such as abnormal noise or excessive vibration are found, stop the operation
immediately. Do not start the operation before the cause of the error is identified and corrective
measures are taken. Incorrect motion could cause injury.
The reduction gear could become extremely hot during operation. After stopping the operation,
never touch the reduction gear until it is completely cooled. Touching the reduction gear could cause
burns.
When performing maintenance, observe the following precautions and ensure safety.
• Wear appropriate clothing and protective gear, including the protective goggles, gloves, and safety shoes.
• Organize the surrounding area and ensure safety to prevent secondary accidents.
• To maintain the condition in which the device is completely stopped, turn OFF the power to the
customer’s device and take extra care so that the power will not be turned ON by accident.
8.2. Daily inspection
Check the following items every day before starting the operation.
Table 8 - 1
Inspection item
Description
Noise
Check for abnormal noise or sudden change of noise.
Vibration
Check for excessive vibration or any sudden change. *
Surface temperature
Check for an excessively hot surface of the reduction gear
(normally below 60°C) or any sudden change.
Bolts
Check for looseness of each mounting bolt.
Leakage of lubricant
Check for leakage of lubricant from the mating face or oil
seal section in the vicinity of the reduction gear.
Note: Check for vibration remotely in a distance from the rotation section such as
connection components.
If it is necessary to access the device for inspection while the device is in operation, cover the rotation
section. Otherwise, you could be caught by the rotation section, which will result in serious injury.
