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Chapter VII Maintenance
Danger
Do not repair and maintain the equipment with electricity, otherwise there is danger of electric
shock!
Confirm that maintenance and repair can only be carried out when the inverter bus voltage is
lower than DC36V, whichever is 10 minutes after the power failure. Otherwise, the residual
charge on the capacitor will cause harm to people!
Please restore the front cover plate of the connection terminal before re - powering, otherwise
it may cause personal injury!
All pluggable plug-ins must be plugged and unplugged in case of power failure. Otherwise,
there is a danger of causing secondary damage!
Danger
Parameters must be set after replacing the frequency inverter, otherwise it may cause damage
to other equipment in the system!
Anti-static measures must be taken to dismantle and install the circuit board, which can
prevent the damage of devices on the circuit board!
Non-professional technical personnel shall carry out electrical detection or measurement
during power-up or operation of the frequency inverter.
7.1 Maintenance and repair
7.1.1 Routine maintenance
Due to the influence of ambient temperature, humidity, dust and vibration, the devices inside the frequency
inverter will age, causing potential failure of the frequency changer or reducing the service life of the frequency
inverter. Therefore, it is necessary to carry out routine and regular maintenance and safeguard of the frequency
inverter.
Routine inspection items:
1) Whether the operating environment of the frequency inverter has changed.
2) Whether the frequency inverter is overheated or has abnormal sound, and whether the frequency inverter
cooling fan works normally.
3) Whether abnormal changes occur in the sound of the motor during its operation and whether vibration occurs
during its operation.
4) Whether the display value of the main operating parameters of the load is the same as the normal value.
