To Next Page

To Previous Page

PMEN0654 rev.0 - 12/2023

GENERAL MAINTENANCE WORK

MAINTENANCE

3 Piping connecon

✓ Leakage: Check for the refrigerant leakage at the piping connecon.

4 Cabinet

✓ Stain and lubricaon: Check for any stain and any lubricaon. Remove the stain and the

lubricaon.

✓ Fixing screw: Check for any loosened screw or any lost screw. Fix the loosened screws and

the lost screws.

✓ Insulaon material: Check for any peeled thermal insulator on the cabinet. Repair the

thermal insulator.

5 Electrical equipment

✓ Acvaon: Check for an abnormal acvaon of the magnec contactor the auxiliary relay the

PCB and others.

✓ Line condion: Pay aenon to the working voltage the working amperage and the working

phase balance. Check for any faulty contact that is caused by the loosened terminal

connecons the oxidized contacts the foreign maer and other items. Check the electrical

insulaon resistance.

6 Control device and protecon device

✓ Seng: Do not readjust the seng in the eld unless the seng is maintained at a point that

is dierent from the point listed in the service manual of the unit.

For the outdoor unit

1 Compressor

✓ Sound and vibraon: Check for abnormal sounds and vibraons.

✓ Acvaon: Check that the voltage drop of the power supply line is within 15% at the start

and within 2% during the operaon.

2 Fan

✓ Rotaon: Check the counter clockwise (or Clockwise according to de outdoor unit model)

rotaon and the rotang speed.

3 Reverse valve

✓ Acvaon: Check for any abnormal acvaon sound.

4 Strainer

✓ Clog: Check that there is no temperature dierence between both ends.

5 Ground wire

✓ Ground line: Check for the connuity to earth.

6 Oil heater

✓ Acvaon: You should acvate the oil heater at least twelve hours before the start-up by

turning ON the main switch.

Hitachi UTOPIA R32 Series User Manual

Other manuals for Hitachi UTOPIA R32 Series