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8.1.6 Humidifier / Air washer
Drain pan must be cleaned thoroughly. Pollution from construction dust can later
cause failure of the pump. In this case, there is no warranty.
Check pumps strainer, washer nozzles and tubes for proper fit.
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Check pump strainer and clean it if necessary.
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Fill pan and U-trap with fresh water and adjust float valve so that valve closes with a water level
2-3 cm below the overflow. Ensure in any case, bubble-free suck in.
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Check the pump rotation direction (arrow on the pump). Measure the current consumption.
Compare the values with the data on the nameplate.
Attention! Never operate the pump running dry, running against a closed discharge
valve is permitted, operating against a closed shut-off value should be avoided, oth-
erwise there is danger of overheating.
The water pressure for the water supply should be 3.0 bar. Maximum allowable pressure is 6.0
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bar.
For air washers the target pressure of the nozzles must be set at the built in discharge pipe
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regulating valve.
Check the right set with a manometer.
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The bleed off quantity is to be setup at the bleed off valve.
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Recommended setting (thumb): Bleed off rate = evaporation rate
On request, we will advise you in determining the correct bleed off quantity.
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Check the proper installation of honeycomb and droplet eliminator. The arrow must point in
direction of airflow (Figure 124).
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Check the tightness of the flange connection of the air washer / humidifier to the adjoining
components. If necessary reseal.
Combs made from cellulose material can have initially an odor that is normal and will soon dis-
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appear
.
Figure 124: Installation of honey comb and droplet separator packages
Water quality for air washer and honey comb humidifier
Please check the supply water quality for air washer and honey comb humidifier. Critical to the
need for water treatment is particularly the carbonate hardness of fresh water.
Depending on water hardness and operational importance of the device, a suitable water treatment
method is to select. To ensure sufficient reliability, the recommended water qualities are shown in
below:
Appearance
pH value
Conductivity
clear, colorless, no sediment
7 to 8.5
max. 30 mS/m
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