Degas Heat Transfer Liquid (Low Boiling Point Expulsion) - Lauda IN 130 T Operation Manual

5.6

Degas heat transfer liquid (low boiling point expulsion)

Degas mode description
V6
3. Fill up with heat transfer liquid until the desired liquid level is reached.
In the meantime, let the pump run.
The cooling unit is switched off. The outflow temperature can rise
above the set temperature due to the heat input of the pump.
4. Press [Stop filling] to exit filling mode and stop the pump.
With [Stop pump], the pump is stopped.
This section is relevant for:
Integral XT devices
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Please note:
Degas slowly and carefully, especially in the case of liquids with a high
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proportion of low boilers.
There must be no gas cushions in the consumer system. Check this by
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reducing the pump power by one or two stages. The level indication of
the device may not rise.
To extend the temperature range of the heat transfer liquid used,
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nitrogen overlay in the expansion vessel is recommended.
Ventilate the installation site. Vapors which are hazardous to health may
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be produced.
Personnel:
Protective equipment:
Principle: During degassing, the heat transfer liquid is boiling. Gas can escape
at various points in the circuit. For example, at the heater or at a throttle
point.
The Integral XT device is equipped with a gravity separator upstream of the
pump, through which the gas passes into the expansion vessel.
Integral Process Thermostats and High-Temperature Thermostats
When refilling during operation, it is not necessary to start the fill
mode. If necessary, switch the unit to standby mode. To do so, press
the [STOP] softkey.
Only for Integral XT
If [Fill mode] is active, the device does not heat or cool. You can
only start the device after you end [Fill mode].
DANGER!
Hot heat transfer liquid in the expansion vessel
Fire
Degas with the degas mode.
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Specialized personnel
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Safety glasses
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Protective gloves
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Protective work clothing
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