maintenance and inspection of power press inverter

Frequency inverter is optional for power press. The function is to adjust the motor speed and achieve adjustable press stroke speeds. Most buyers choose the inverter to equip with the press when they place the orders. This article is to introduce the maintenance and inspection of inverter.

Due to the service environmental changes such as temperature, humidity, smoke, frost, dust, or the factors as aging of inverter’s internal components, various failures of inverter may occur. Therefore, it is required to have daily check and keep regular maintenance on inverter during use and storage.

• Check if the components are broken or the screws are loose during transportation.

• Clean the inverter and periodically check if the screws are loose.

•  Power-on the sleeping inverters for 30 minutes once semiannually to prevent electronic components from being disabled.

• Keep inverter away from heavy humidity and metal particles. If necessary, put it in an electric cabinet or a small room with protective measures.

Daily Inspection

Check the following items with the inverter in operation:

• The motor should not be vibrating or making unusual sound.

• Inverter and motor should not be overheating.

• The ambient temperature should not be too high.

• The output current value shown on the monitoring displays should not be higher than normal value.

• The cooling fan at the bottom of the inverter should be in normal operation.

Periodic Maintenance

Periodic maintenance ensures that the inverter receives the proper care to maintain overall performance. Always turn the power supply off before inspection, and the inspection starts only after the indicator CHARGE on main circuit power supply is off.

Periodic Maintenance and Replacement of Parts

In order to keep the inverter operating normally over a long period of time, periodic maintenance and replacement are required for the internal parts according to their service lives. Periodic maintenance standards vary from the inverter’s service environment and applications. See Table 10-2 for the part replacement guidelines.

The standard replacement period is based on the following application conditions:

• Ambient temperature: Yearly average of 30°C

• Load factor: 80% maximum

• Operation rate: 12 hours maximum per day

The standard replacement period is based on the following application conditions:

· Ambient temperature: Yearly average of 30°C

· Load factor: 80% maximum

· Operation rate: 12 hours maximum per day