Cleaning The Built-In 2-Way Indoor Unit (Rcd) - Hitachi RCI-1.0FSR Service Manual

9 Maintenance notes
Indoor cleaning
After cleaning remove all remains of water.
1 After cleaning, fit the drain pan by lowering the rope.
2 Dry the remains of any water on the indoor unit.
3 Check the insulation of the drain pump using a megohmmeter.
Check that the insulation is above 1 MΩ when 500V are applied.
4 Connect the wiring.
5 Perform the neutralisation treatment after cleaning.

9.2.2 Cleaning the built-in 2-way indoor unit (RCD)

Preliminary procedure
Place a vinyl sheet on the floor to protect the furniture and other items from the cleaning water before starting this job.
Remove the drain pan as indicated in section
1 Remove the drain pan after emptying it of water.
2 Empty the drain pan of water by removing the rubber plug. Make sure the water flows easily through the hole by
inserting a pencil into it.
3 Once the drain pan has been removed, check that there is no water in the drainage at the bottom of the pan.
4 Clean and dry the pan before removing it. Handle the pan carefully.
Remove the electrical box after opening the corresponding panel and then disconnect the connectors located between
the indoor and outdoor units and other connectors, as indicated in section
Remove the float switch as indicated in section "7.3.6 Removal of the float
Remove the drainage mechanism as indicated in section
Cleaning the indoor unit
Clean the dust from the inner surface of the heat exchanger by
brushing it downwards. Collect all of the dust in a bucket or a
cardboard box.
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N O T E
Wear gloves to avoid injuries caused by the heat exchanger fins.
292 SMGB0137 rev.0 - 05/2021
"7.3.8 Removal of the drain
"7.3.7 Removal of the drain
Cleaning water
collector
pan". Also carry out the following tasks:
"7.3.2 Removal of the electrical
switch".
mechanism".
Drain pan
box".
Fixing plate for
the fan