Lauda IN 550 XT, Руководство по эксплуатации

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CAUTION!
Heat transfer liquid escaping from the overflow pipe
Slipping hazard
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Use a collecting vessel on the overflow.
Heat transfer liquids expand when heated (approx. 10 % for every
100 °C). If an external consumer is connected, the total expansion
occurs in the tank of the thermostat.
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Avoid ignition sources in the vicinity of the cover and overflow hose.
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There must be no gas cushions in the consumer system.
Information on filling the device
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Refilling during operation is possible.
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Only operate the thermostat if a flow in the consumer system is pos-
sible. Open any shut-off valves in the consumer.
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During filling, the device may overflow if the consumer is positioned
higher than the device and filling is interrupted (e.g. due to a power
failure). There may be even larger amounts of air in the consumer, which
allows the filled liquid to flow back. In case of doubt, a shut-off valve
should be attached to the lower connection of the application.
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A vent valve Fig. 38 can significantly simplify the aeration process. For
this purpose, periodically open the valve carefully and allow gas/air to
escape until liquid escapes from the valve, and then close the vent valve
again. Collect the liquid in a suitable container. Operate the valve again
at regular intervals until no more air escapes.
Notes on fill mode in Integral XT
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The fill mode (only in Integral XT) supports you in filling the device.
Messages in the display guide you through the filling process. Follow the
instructions and switch on the display with the [>>] softkey.
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Furthermore, the fill mode removes gas bubbles and air bubbles from
the thermostatic circuit. The pump starts automatically at pump level 2
and switches off briefly every 45 seconds for better aeration. Heating
and cooling unit are switched off. Observe the pressure indication and
level indication until the level no longer drops, the pressure indication no
longer rises and the degassing symbol is no longer displayed for at least
two minutes. Venting takes at least a few minutes and can take more
than an hour in unfavorable conditions with large-volume consumers
and high viscosity.
Fig. 38: Application with vent valve
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