Checking The Low-Level Protection; Check The Heat Transfer Liquid - Lauda IN 550 XT FC Operation Manual

7.7

Checking the low-level protection

7.8

Check the heat transfer liquid

V4
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:
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.
Protective equipment:
Integral process thermostats with flow control unit
Safety glasses
n
Protective gloves
n
Protective work clothing
n
Safety glasses
n
Protective gloves
n
Protective work clothing
n
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