5 Maintenance
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5 Maintenance
5.1 Daily Maintenance
Check the following items daily to avoid deterioration in performance or products. Copy
this checklist and sign the "checked" column after each inspection.
Inspection Item
Inspection Details
Checked
Installation Envi-
ronment
◆
Check whether the ambient temperature, humidity and vibration
are within the permissible range.
◆
Check whether the AC drive is installed in an environment without
dust, combustible and explosive gases, oil mist, and water drops.
Electric cabinet
◆
Check whether the mounting bracket is loose.
◆
Check whether copper ground bars and terminals become loose
or get corroded.
Motor
◆
Check whether abnormal noise exists.
◆
Check whether abnormal oscillation exists.
◆
Check whether the connection between the motor and AC drive
becomes loose.
◆
Check whether the motor fixing screws become loose.
Cooling fan
◆
Check whether abnormal noise or vibration exists on the cooling
fan of the AC drive.
◆
Check whether abnormal noise or vibration exists on the cooling
fan of the motor.
Load
◆
Check whether the motor parameters are set properly.
◆
Check whether the motor is overload.
◆
Check for mechanical vibration (< 1G under normal conditions).
Voltage
◆
Check whether the main circuit voltage is within the permissible
range.
◆
Check whether the control circuit voltage is normal.
◆
Check whether start of heavy load exists.
Operating panel
◆
Check whether the operating panel display is clear.
◆
Check whether any character disappears.
Main circuit
◆
Check whether any screw is loose.
Filter capacitor
◆
Check whether liquid leakage, discoloring, cracking, or housing
expansion occurs on the filter capacitor.
Electromagnetic
contactor
◆
Check whether the contactor is loose or abnormal noise exists
during operation.
◆
Check whether short-circuit, water stain, expansion, or cracking
occurs on external components.
