Hitachi RCI-1.0FSN3 Service Manual page 419

12 Maintenance notes
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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 Removal of the drain pan. Also carry out the following tasks:
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 inser-
ting 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 Removal of the electrical box.
Remove the float switch as indicated in section Removal of the float switch.
Remove the drainage mechanism as indicated in section Removal of the drain mechanism.
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 car-
dboard box.
N O T E
Wear gloves to avoid injuries caused by the heat exchanger
fins.
Place a vinyl sheet around the heat exchanger to prevent the cle-
aning water from splashing the insulation surface and drain pump.
Secure the vinyl sheet to the side plate of the exchanger using
adhesive tape and seal the gap between the vinyl sheets in the
same manner.
Secure the motor panel using adhesive tape.
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SMGB0077 rev.0 - 01/2013