Lauda IN 550 XT, Руководство по эксплуатации

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7.7 Checking the low-level protection
An alarm signal sounds before the liquid level decreases so much that the
heater is no longer covered completely with liquid. Low level appears on the
display. The electronics system switches off the device components.
WARNING!
Contact with hot or cold heat transfer liquid
Scalding, cold burns

Bring the heat transfer liquid to room temperature before
draining.
An alarm must sound as soon as the minimum level is reached.
Protective equipment:
n
Safety glasses
n
Protective gloves
n
Protective work clothing
1. Switch on the device and the pump. Set the set temperature to room
temperature.
2. Watch the level indication on the display.
3. Lower the liquid level in the device. For this purpose, allow the heat
transfer liquid to flow out into a suitable container via the open drain
nozzle.

The display shows that the heat transfer liquid is sinking.
If the fill level falls to level 2, a warning is issued on the display.
If the liquid falls to level 0, the device switches off and the
Alarm
message appears on the display.
4. Close the drain tap.
5. Top up the heat transfer liquid.

The liquid level in the display rises.
6. Delete the fault in the device menu.
7.8 Check the heat transfer liquid
Protective equipment:
n
Safety glasses
n
Protective gloves
n
Protective work clothing
V4 Integral process thermostats with flow control unit 131 / 171