Instruction Manual ZHK
110/129
V07-19.0
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The maintenance of pumps and motors must be done according to the manufacturer's instruc-
tions.
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Regular cleaning of all components largely determines the hygiene of the entire system.
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When unused for long periods, the water must be released for hygiene reasons and the drain
must be cleaned properly. Drain the pump as well.
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Fill siphon with clean water.
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Depending on water pollution, water hardness and water treatment, impurities and lime depos-
its must be removed from the washer: 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. Calcifications at droplet eliminators and straighteners made of
PPTV may be removed through slight bending of the fins after drying and dismantling of re-
spective components.
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Replace corroded or damaged droplet eliminator fins.
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Check sieves and strainers for dirt deposits and clean if necessary.
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Check outlet, overflow, U-trap and water tank for debris and clean if necessary.
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Check solenoid valves for functionality and clean if necessary.
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Check control and safety devices for functionality.
9.5.2
Spray humidifier
The instructions of
chapter 9.5.1
are to be applied analogously.
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Check water supply for proper function and check the water level, if necessary, adjust the float
valve so that the valve closes at a water level of 10
–
15 mm below the overflow.
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Disassemble and clean the nozzles.
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Damaged nozzles are to be replaced. Never clean the nozzle holes with hard objects. Clean
the nozzle holder without nozzles with high-pressure water. Make sure that the drain valve is
open while doing this process.
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Check pump piping for leaks.
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Check the hose clamps for proper fit.
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Check the flexible tube connections in the air washer circuit on fissures and for damages every
three months. In the case of visible damages, cracks in the surface, signs of aging or deteriora-
tion, the flexible tubes must be substituted immediately.
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Substitute flexible connector tube on pressure side and suction side every 5 years.
9.5.3
Evaporative humidifiers
The instructions of
chapter 9.5.1
are to be applied analogously.
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The float valve has to close securely at a water level of 15
–
20 mm below the overflow to en-
sure bubble free suction. Possible readjustments have to be performed in the course of any
regular inspections.
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Heavily calcified evaporative modules must be renewed.
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In mild calcification the packet can be cleaned by adding decalcifier to the circulating water
(shut down the AHU before adding decalcifier). After that, clean the section and tubes properly
with fresh water.
9.5.4
High pressure humidifiers
Carry out the maintenance according to the instructions of the manufacturer.
Summary of Contents for ZHK Series
Page 1: ...ZHK INSTRUCTION MANUAL ...