General Considerations; General Maintenance Work - Hitachi UTOPIA R32 Series Installation And Operation Manual

15.1 General considerations

!
DANGER
• Turn OFF the power source before the maintenance work. If not, it may cause a fire or an
electric shock.
• Perform the maintenance work with stable footing. If not, it may cause falling or injury.

NOTE
Do not operate the system without the air filter to protect the indoor unit heat exchanger against
being clogged.
◆ Maintenance beginning and ending of use
Beginning of use
Remove obstacles for the air inlet grilles of indoor unit and outdoor unit and the air outlet.
Check that the air filter is not clogged.
Ending of use
Clean the air filter, the air inlet grille and the flat panel.

15.2 General maintenance work

For the indoor unit and the outdoor unit
1 Fan and fan motor
✓ Lubrication: All the fan motors are pre-lubricated and sealed at the factory. Therefore no
lubrication maintenance is required.
✓ Sound and vibration: Check for abnormal sounds and vibrations.
✓ Insulation: Check the electrical insulation resistance.
2 Heat exchanger
✓ Clog: Inspect the heat exchanger at regular intervals and remove any accumulated dirt and
any accumulated dust from the heat exchanger. You should also remove from the outdoor
units other obstacles such as the growing grass and the pieces of paper which might restrict
the airflow.
PMEN0654 rev.0 - 12/2023
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