Chapter 7 Maintenance And Inspection; Daily Inspection; Periodic Inspection - IMO Jaguar CUB Instruction Manual

Chapter 7 MAINTENANCE AND INSPECTION
Perform daily and periodic inspection to avoid trouble and keep reliable operation for a long time.
Take care of the following items during work.
• The electric charge in the DC bus capacitor will be retained even after the power is turned off.
Therefore, it may take a long time until the DC link circuit voltage reaches a safe potential. Do
not open the control circuit terminal block cover within 5 minutes after the power has been
turned off. Then remove the control circuit and main circuit terminal block covers. Check that
the DC link circuit voltage between main circuit terminals P (+) and N (-) does not exceed the
safety voltage (+25 VDC) with a multimeter and start the maintenance and inspection.
Electric shock may occur.
• Maintenance, inspection, and parts replacement should be made only by authorized persons.
• Take off watches, rings and other metallic matter before starting work.
• Use insulated tools.
• Never attempt to repair the Inverter.
Electric shock or injuries could occur.

7.1 Daily Inspection

Visually inspect errors in the state of operation from the outside without removing the covers while
the inverter operates or while it is turned on.
- Check if the expected performance (satisfying the standard specification) is obtained.
- Check if the surrounding environment satisfies Chapter 2, Section 2.1 "Operating Environment."
- Check that the LED monitor displays normally.
- Check for abnormal noise, odour, or excessive vibration.
- Check for traces of overheat, discoloration and other defects.

7.2 Periodic Inspection

Perform periodic inspection by following the items of the list of periodic inspection in Table 7.1. Stop
the motor, turn the inverter off and remove the control and main circuit terminal block covers to
perform periodic inspection.
7-1