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Instruction Manual ZHK
V07-21.0 103/140
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Open vent and drain valve on the condensate drain.
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Open the steam valve only slightly at the beginning, until steam is coming out of the drain and
vent valve (on the condensate drain outlet).
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Close drain and vent valve and open steam valve fully.
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Check regularly the vent valve during operation.
Attention!
During a temporary shutdown of the system because of frost and corrosion, it is important to avoid
condensate remaining in the pipes.
8.1.4 Electric heater
Observe specifications of
chapter 7.6 (Electric heaters)
-safety thermostats.
NOTICE!
Caution is required with electric heaters that are located near to a honeycomb hu-
midifier: The material of the honeycombs is only resistant to a temperature of max-
imum 60 °C. Start the heater only with running fan for heat removal!
8.1.5 Air filters
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Before the commissioning stage, all filters should be checked for tightness, as otherwise they
could be sucked in and therefore lead to damage.
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Differential pressure measuring devices (U-tube manometer and inclined manometer) are op-
tional and must be filled with the supplied test liquid (bottle) of density 1 kg/l.
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If a differential pressure switch is mounted (option) or is it installed on site, then it is to be set to
the final pressure drop. Information regarding the final pressure drop can be found at the tech-
nical data sheet.
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In addition, the output of a warning alert when the final pressure loss is reached must be en-
sured during the commissioning. The resulting maintenance actions are described in
chapter
9.3
(
Air filters
).
8.1.6 Humidifier / Air washer
General indications
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Check the pump rotation direction (arrow on the pump). Measure the current consumption and
compare the values with the data on the nameplate.
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The water pressure for the water supply should be 3.0 bar. Maximum allowable pressure is 6.0
bar.
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Check the tightness of the flange connection of the humidifier to the adjoining components. If
necessary, reseal.
NOTICE!
Drain pans must be cleaned thoroughly. Pollution from installation dust residue
can cause failure of the pump. In the event of this, the warranty becomes null and
void.
Attention!
Never operate the pump running dryly. Running against a closed dis-
charge valve is permitted. However, operating against a closed shut-off value
should be avoided, otherwise there is danger of overheating.