Hitachi KPI Installation And Operation Manual page 16

6.3. TOTAL HEAT EXCHANGER ELEMENT
CLEANING KPI-(252~2002)(E/H)2E MODELS
Clean the element once or more every two years. In order to avoid
decreasing airflow and efficiency.

Step 1:
Pull back the hinges, open the service cover and remove the
cover.
Hinge

Step 2:
Take hold of the handle and draw the total heat exchanger
elements (two elements) out from the main unit.
Handle Heat Exchanger

Step 3 KPI-(252~2002)E2E:
Use a vacuum cleaner to suck up the dust and dirt on the exposed
surfaces of the total heat exchange elements.
Attach a nozzle with a brush to the vacuum cleaner for this job
and clean the elements by passing the brush lightly over their
exposed surfaces.
Corner

CAUTION
Do not wash the element by water.
−
Do not use the hard nozzle of the vacuum cleaner. It may damage
−
the exposed surfaces of the KPI elements.
Under no circumstances should the KPI elements be washed in
−
water.
16
PMML0185 rev.1 - 03/2010
Maintenance Cover
Catch
Total Heat
Exchanger Element
Vacuum cleaner (with
brush attachment)

Step 3 KPI-(502~2002)H2E:
Aluminium heat exchanger can be cleaned using vapour.
Clean with vapour of water

Step 4:
Set the element.

Step 5:
Close the service cover
6.4. TOTAL HEAT EXCHANGER ELEMENT
CLEANING KPI-3002H2E MODELS

Step 1:
Remove the screws and pull down to take out the heat exchanger
element.

WARNING
Make sure to have the heat exchanger element well subjected
before removing the screws to prevent it fall.
Heat exchanger weight: 22 kg

Step 2:
Aluminium heat exchanger can be cleaned using vapour.
Clean with vapour of water

Step 3:
Close the service cover
MAINTENANCE
Total Heat
Exchanger Element
Total Heat
Exchanger Element