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Servicing and maintenance
8.4.2.1 Maintenance
Check plates for soiling.
„
Remove oil and grease deposits (see "8.4.2.2 Cleaning" on page 55)
„
Check water drain and siphon of the drain tray and top up if necessary.
„
8.4.2.2 Cleaning
The heat exchanger can be cleaned using a hot water high pressure cleaner. The following parameters are to be observed:
Nozzle:
Pressure:
Water volume:
Water temperature:
Distance to heat exchanger:
Nozzle direction:
Fig. 33 Plate heat exchanger cleaning
1
Plate heat exchanger
2
Outdoor air
3
High pressure flat jet nozzle
3059570
Risk of burns as a result of contact with hot surfaces and media (plate heat exchanger,
heat exchanger and electric heating register)
Before and after cleaning and maintenance, wait until the hot surfaces have cooled down.
„
Wear personal protective equipment.
„
6
5
The specified values must be adhered to, otherwise the plate heat exchanger may be damaged.
To remove stubborn dirt, cleaning agents can also be used (e.g. washing-up liquid, biode-
gradable).
It must then be rinsed using plenty of fresh water.
Do not use aluminium cleaners! These are acidic and attack the surface of the plate heat
exchanger.
Subject to changes in line with technical progress.
CAUTION
Flat jet nozzle
max. 20 bar
max. 450 l/h
max. 70 °C
min. 30 cm
90° offset to foil embossing or fins
2
1
3
4
4
Extract air
5
Supply air
6
Exhaust air
ATTENTION
NOTE
55
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