WEGER WALTER GMBH DIWER EVO DP80 Series, Инструкция по установке и эксплуатации

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Installation and Operating Manual Page
54
Printed: 02/2015
Components provided by customer:
Fresh water humidifiers are normally connected to the drinking water supply system. Ensure
that the humidifier is pressurised with a water pressure of 2 to 3 bar. This pressure level must
never be exceeded, irrespective of the operating conditions.
Also ensure that the maximum possible supply rate does not exceed the maximum possible
outlet rate through the available drain.
For safety reasons, we recommend installing a pressure controller, a water filter and stop valve
in the supply line.
The drain must be fitted with a suitable siphon. The siphon outlet end must be open and must
feed the water to the waste water system. Ensure that there is free drainage under all
operating conditions.
Function:
When commissioning the humidifier, adjust the humidification rate using the flow meter and
the controller (manual adjustment).
The fresh water is fed through a distribution pipe to the contact humidifiers where it is
released in droplets to humidify the air flowing through the duct.
Excess water is collected and drained off. To reduce operating costs, do not feed too much
water to the humidifiers. For proper operation, it is sufficient if the contact humidifiers are
properly soaked. Avoid run-offs.
To tune up humidification, open the solenoid valve. To shut down humidification, close the
solenoid valve. We recommend operating the fan with a follow-up time to dry the cells.
Important
- The water overflow must be equipped with a siphon. Depending on the application, a
siphon must also be installed at the tray drain. The siphons must provide for proper
pressure equalization between the machine chamber and the drain system.
- If the surface humidifier is to be shut down for more than 48 hours, empty and clean
it.
Water quality for humidification
The quality of the water is a major factor for proper humidification. Depending on the carbon
hardness of the fresh water and the impact of a unit failure, it might be necessary to treat the
water for humidification.
The water must conform to the following quality standards:
Appearance
clear, colourless, no cloudiness or sediments
pH 7...8.5
Conductivity max. 800 μS/cm
Total hardness max. 4 °dH
Carbon hardness max. 4 °dH
Total salt content max. 600 g/m³
Chlorides max. 150 g/m³
Sulphates max. 290 g/m³
Iron max. 0.05 g/m³
Manganese max. 0.1 g/m³
Aggressive carbon dioxide 0 g/m³
KMnO4 max. 20 g/m³