Daily Inspection; Periodic Inspection - Fuji Electric FRENIC-HVAC User Manual

• Before proceeding to the maintenance/inspection jobs, turn OFF the power and wait at least ten minutes.
Make sure that the LCD monitor is turned OFF. Further, make sure, using a multimeter or a similar
instrument, that the DC link bus voltage between the terminals P(+) and N(-) has dropped to the safe level
(+25 VDC or below).
Electric shock may occur.
• Maintenance, inspection, and parts replacement should be made only by authorized persons.
• Take off the watch, rings and other metallic objects before starting work.
• Use insulated tools.
• Never modify the inverter.
Electric shock or injuries could occur.

10.1 Daily Inspection

Visually inspect the inverter for operation errors from the outside without removing the covers when
the inverter is ON or operating.
- Check that the expected performance (satisfying the standard specifications) is obtained.
- Check that the surrounding environment satisfies the requirements given in Chapter 2, Section 2.7
"Operating Environment and Storage Environment."
- Check that the LCD monitor and LED indicators on the keypad work normally.
- Check for abnormal noise, odor, or excessive vibration.
- Check for traces of overheat, discoloration and other defects.

10.2 Periodic Inspection

Perform periodic inspections according to the items listed in Table 10.1. Before performing periodic
inspections, be sure to stop the motor and remove the front cover with the inverter power OFF.
Check part
Environment 1) Check the ambient temperature,
humidity, vibration and
atmosphere (dust, gas, oil mist,
or water drops).
2) Check that tools or other foreign
materials or dangerous objects
are not left around the
equipment.
Input voltage Check that the input voltages of the
main and control circuits are correct.
Keypad 1) Check that the display is clear.
2) Check that there is no missing
part in the displayed characters.
Table 10.1 List of Periodic Inspections
Check item
1) Check visually or
2) Visual inspection
Measure the input
voltages using a
multimeter or the like.
1), 2)
10-1

10.1 Daily Inspection

How to inspect Evaluation criteria
1) The standard
measure using specifications must
apparatus. be satisfied.
2) No foreign or
dangerous objects
are left.
The standard
specifications must be
satisfied.
1), 2)
Visual inspection The display can be
read and there is no
fault.