5 Maintenance and Repair
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5 Maintenance and Repair
5.1 Overview
Before maintenance and repair, read
"Safety Instructions"
and the safety instructions
given in this section. Failure to comply may result in personal injury or equipment
damage.
This chapter describes how to perform routine maintenance and periodic inspection
and replace components on the AC drive.
5.2 Routine Maintenance
The inuence of the ambient temperature, humidity, dust, and vibration will age
the components inside the AC drive, which may cause potential faults or reduce
the service life of the AC drive. Therefore, it is necessary to carry out routine and
periodic maintenance. More frequent inspection will be required if it is used in harsh
environments, such as:
High ambient temperature
Frequent starting and stopping
Fluctuations in the AC power supply or load
Excessive vibrations or shock loading
Dust, metal dust, salt, sulfuric acid, chlorine atmospheres
Poor storage conditions.
Check the following items daily to ensure normal running and prevent damage to the
AC drive. Copy this checklist and sign the "Checked" column after each inspection.
Inspection
Item
Inspection Point Solution upon Fault Checked
Motor
Inspect whether
abnormal sounds
and vibration occur
on the motor.
Check whether the mechanical connection is
normal.
Check whether output phase loss occurs on the
motor.
Check whether retaining screws of the motor are
tightened.
□
Cooling fan
Inspect whether the
cooling fan of the
AC drive and motor
work normally.
Check running of the cooling fan of the AC drive.
Check whether the cooling fan of the motor is
normal.
Check whether the air lter is clogged.
Check whether ambient temperature is within the
permissible range.
□
Installation
environment
Inspect whether the
cabinet and cable
duct are normal.
Check input and output cables for damaged
insulation.
Check for vibration of hanging bracket.
Check whether ground bars and terminals
become loose or get corroded.
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