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9.5.2 Air washers
In general:
Check water supply for properly function and check the water level, adjust if necessary.
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Fill tank and siphon with clean water and adjust the float valve so that the valve closes at
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a water level of 2-3 cm below the overflow.
Depending on water pollution, hardness and processing the air washer are to rid of de-
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posits and impurities: Severe calcification of components such as nozzles and droplet
eliminators indicate an insufficiently effective water treatment. Calcification of nozzles and
droplet eliminators can be removed by treatment with dilute formic acid. After treatment
rinse well with clean water.
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Replace corroded or damaged droplet eliminator fins.
Check sieves for dirt deposits and clean if necessary.
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Disassemble and clean the nozzles.
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Check water tank overflow, and U-trap for debris and clean if necessary.
Damage nozzles are to be replaced. Never clean the nozzle holes with hard objects.
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Clean drain valve with, high-pressure water.
Check the bleed of valve settings and proper function.
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Check pump piping for leaks.
Check hoses for cracks, replace if necessary.
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Check that hose clamps are tight.
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9.5.3 Steam humidifiers
Maintenance according to the instruction of the manufacturer.
The following informations are general rules:
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Check water sieves for contamination and clean if necessary.
Check operation of solenoid valves, and clean if necessary.
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Check steam distribution for deposits.
Check steam supply for leaks.
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Check function of the condensate drain.
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Check electrical contacts on the pump for corrosion.
Measure the current consumption.
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Clean entire piping system, control and safety devices.
Check proper function of control and security devices.
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Measure the humidifier performance after maintenance.
9.5.4 Honey comb humidifiers
Please refer to the indications for air washers in chapter 9.5.2 (Air washers).
In general:
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The float valve has to close securely at a water level of 2-3 cm below the overflow to en-
sure bubble free suction. Possible readjustments have to be performed in the course of
any regular inspections.
Heavily calcified honeycomb packets must be renewed.
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