Felhasználói Kézikönyv Mitsubishi Electronics Hegesztő Rendszer A800 [87/116 Oldalak]

Mitsubishi Electronics hegesztő rendszer A800

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Inspection item

PRECAUTIONS FOR MAINTENANCE AND INSPECTION

The inverter is a static unit mainly consisting of semiconductor devices. Daily inspection must be performed to prevent any

fault from occurring due to the adverse effects of the operating environment, such as temperature, humidity, dust, dirt and

vibration, changes in the parts with time, service life, and other factors.

Precautions for maintenance and inspection

When accessing the inverter for inspection, wait for at least 10 minutes after the power supply has been switched OFF, and

then make sure that the voltage across the main circuit terminals P/+ and N/- of the inverter is not more than 30 VDC using a

tester, etc.

5.1 Inspection item

5.1.1 Daily inspection

Basically, check for the following faults during operation.

• Motor operation fault

• Improper installation environment

• Cooling system fault

• Abnormal vibration, abnormal noise

• Abnormal overheat, discoloration

5.1.2 Periodic inspection

Check the areas inaccessible during operation and requiring periodic inspection.

Consult us for periodic inspection.

• Check and clean the cooling system. .......... Clean the air filter, etc.

• Check the tightening and retighten.............. The screws and bolts may become loose due to vibration, temperature

changes, etc. Check and tighten them.

Tighten them according to the specified tightening torque. (Refer to page 30.)

• Check the conductors and insulating materials for corrosion and damage.

• Measure the insulation resistance.

• Check and change the cooling fan and relay.

NOTE

• When using the safety stop function, periodic inspection is required to confirm that safety function of the safety system

operates correctly.

For more details, refer to the Safety Stop Function Instruction Manual (BCN-A23228-001).

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