When the frequency converter is checked regularly, it is necessary to cut off the power supply, so that the monitor can not be displayed and the main circuit power indicator light is extinguished. Need to check the following items:
Main circuit terminal, control circuit terminal screws: check whether there is loose, can be tightened with a screwdriver.
Heat sink: whether there is dust, air duct blockage, 4~6kgC can be used for drying compressed air blow off pressure meters.
PCB printed circuit board: to check whether there is oil pollution, conductor chip attachment, copper foil is corrosive, can be used to clean the surface of the PCB plate foreign body.
Cooling fan: whether the operation is normal, whether there is abnormal sound, abnormal vibration, the cumulative running time of more than 20 thousand hours, you need to replace the cooling fan.
Power components: whether there is dust, oil and other foreign matter attached, must be cleaned foreign body.
Electrolytic capacitor: whether there is leakage, bubbling phenomenon, there is no relief valve, need to replace the electrolytic capacitor.
In order to maintain the normal operation of the frequency converter, it is necessary to maintain and maintain the electronic components of the inverter. The service life of the electronic components of the inverter is different because of the different use environment and working conditions.
Cooling fan - replace 2~3.
Electrolytic capacitor - replace 4~5.
Printed circuit board - replace 5~8.
Fuse - replace 10 years.
The conditions for the replacement of the above inverter components are as follows:
(1) ambient temperature: average annual temperature of 30.
(2) load factor: less than 80%.
(3) running time: less than 12 hours a day.
If not in the following environment to run the inverter electronic components use the replacement time should be appropriate to shorten. More inverter information please log on the official website.
(Min Min converter: http://www.cnkaimin.net)