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7.5
Cooling module
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7.5.1
Rinsing process
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Maintenance
WARNING
Health hazard!
The use of chemicals can present a health hazard.
•
Observe the safety data sheets.
•
Wear protective clothing as stated in the safety data sheet when handling
chemicals (e.g. safety goggles, face shield, respiratory equipment, safety gloves,
safety shoes, etc.).
When the cooling module is tilted and place on its side, all of the water connections must
be sealed since, otherwise, the medium that flows out can damage the electronic control
system.
Note
•
The cooling module can be flushed with a commercially available, glycol-based
anti-freeze agent (e.g. GLYSANTIN by BASF).
•
Ensure that the anti-freeze agent is compatible with the pipe system of the
building.
•
Observe the safety data sheet.
1.
Remove the cooling module.
2.
Seal the condensate outlet.
3.
Connect a pressure pump (hand pump) to the feed flow.
4.
Connect a hose (approx. 3 m) to the return flow.
5.
Open the actuator of the control valve by hand (see the procedure that is described
in the "Start-up/Venting" section).
6.
Insert the suction hose of the pressure pump and the return flow hose of the
cooling module into a vessel with a capacity of approximately 15 litres.
7.
Fill the vessel with approximately 3.5 litres of glycol (this ensures protection against
freezing up to approximately -20°C).
8.
Switch the pump on and flush the cooling module for 5 to 15 minutes with glycol.
9.
Switch the pump off and open the vent valve of the heat exchanger.
Note
If the pump has a non-return valve, the pump must be replaced with a hose.
VARISTAR Cooling unit SHX 30
62
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