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Translation of original operating instructions
110
AL-KO AT4F ATEX
7.3.2.1 Maintenance
Check plates for soiling.
Remove dust and fibrous materials or similar, clean condensate drain.
Check water drain and siphon of the drain tray and top up if necessary.
Check the damper connection, drive and control functions.
The integration of the plate heat exchanger and the droplet eliminator into the equipotential bonding must be
checked, see also chapter "7.3.6 Droplet eliminator" on page 114.
7.3.2.2 Cleaning
Dry dusts or fibrous materials can be removed using compressed air.
Remove oil and grease deposits using hot water, steam or grease-dissolving cleaning agents.
Remove damp, greasy and greasy deposits with a high-pressure cleaner and steam or hot water.
The heat exchanger can be cleaned using a hot water high pressure cleaner.
The following parameters are to be observed here:
Nozzle
Flat jet nozzle
Pressure
max. 20 bar
Water volume
max. 450 l/h
Water temperature
max. 70 °C
Distance to heat exchanger*
min. 30 cm
Nozzle direction
90° offset to foil embossing or fins
* The minimum distance to the heat exchanger is a recommendation. The minimum distance must be selected in such a way that
complete and thorough cleaning without damage is ensured.
Cleaning direction: from the exhaust air side to the outgoing exhaust air side
1
2
4
3
6
5
Fig. 65 Cleaning direction for plate heat exchanger
1
Plate heat exchanger
4
Supply air
2
High pressure flat jet nozzle
5
Extract air
3
Outdoor air
6
Exhaust air
ATTENTION
The specified values must be adhered to, otherwise the plate heat exchanger may be damaged.
The plate heat exchanger must be integrated back into the unit potential each time the equi-
potential bonding is released.
NOTE
To remove stubborn dirt, cleaning agents can also be used (e.g. all-purpose cleaner, 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.
Содержание AT4F Series
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