Hitachi RCI Service Manual page 394

12 Maintenance notes
Fit a nozzle with a brush to a vacuum cleaner.
Use the vacuum cleaner to suck up any dust and dirt by passing
the brush gently over the exposed surfaces of the heat exchanger
parts.
Insertion of heat exchanger components
1 Fit the filters at the bottom left and bottom right of the heat exchanger.
C A U T I O N
The heat exchanger is a heavy item. Be careful when handling it.
2 Insert the heat exchanger.
3 Close the service cover and the hinges.
4 Connect the power switches.
5 Press the RESET button on the remote control.
For KPI-(3002)H2E systems
Removal and cleaning of heat exchanger components
N O T E
Clean the components at least every two years to avoid a drop
in the air flow and the heat exchanger efficiency.
Switch off the power supply switches before starting maintenance
work.
Wait 5 minutes after turning off the power supply switches.
Loosen and remove the 4 bolts securing the heat exchanger.
C A U T I O N
The heat exchanger is a heavy item. Be careful when handling
it.
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SMGB0063 rev. 1 - 10/2010