TI120 Series Variable Frequency Drive
Daily Maintenance
and Care
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Chapter 7 Daily Maintenance and Care
7.1 Daily Maintenance
Due to the influence of environment temperature, humidity, dust and vibration, the internal components
of the frequency variable frequency drive will be aged, and it will result in the potential fault of the
variable frequency drive or reducing the service life of the variable frequency drive. Therefore, it is
necessary to carry out daily and regular maintenance and care of the variable frequency drive.
Daily inspection item:
1) Whether the sound changes abnormally during motor operation;
2) Whether there is vibration in the motor operation.
3) Whether the installation environment of the variable frequency drive has changed;
4) Whether the cooling fan of the variable frequency drive is working normally;
5) Whether the variable frequency drive is overheated;
Daily cleaning:
1) The variable frequency drive shall always be kept clean.
2) It shall remove dust on the surface of the variable frequency drive effectively to prevent dust from
entering the variable frequency drive, especially metal dust.
3) Effectively remove oil stains from the cooling fan of the variable frequency drive.
7.2 Daily Inspection Item
Regular inspection items:
1) Check the air duct and clean it regularly.
2) Check whether the screw is loose.
3) Check if the variable frequency drive is corroded
4) Check whether the wiring terminals have arcing marks.
5) Insulation test of main circuit
Reminder: when measuring insulation resistance with a megohmmeter (please use a DC 500V
megohmmeter), disconnect the main circuit from the variable frequency drive. Do not test the insulation
of the control loop with an insulation resistance meter. High voltage test is not necessary (it was
completed when leaving the factory).
