Lauda IN 550 XT FC Operation Manual page 73

Filling an empty device
Fig. 39: Pump menu in Integral XT FC
Refilling the heat transfer liquid
Heat transfer liquid should be pumped into
the application
V4
Protective equipment:
1. Close the drain taps. By turning them clockwise.
2. Attach a suitable hose (heat transfer liquid/temperature) to the over-
flow connection on the device.
3. Place the end of this hose into a suitable canister to collect the
overflowing heat transfer liquid.
4. Switch on the device.
If the tank is empty (level 0), the fill mode is started immediately

after switching on the device.
5. Remove the tank lid. Use a funnel for filling, if required.
6. Carefully fill the heat transfer liquid. Check the level indicator and do
not overfill the device!
Recommendation: Fill the device up to level 6.
7. Switch on the pump and fill the application. The level in the device
drops.
8. Carefully top up the heat transfer liquid. Check the level indicator and
do not overfill the device!
The device supports you additionally with a signal tone from level 11
on. At the beginning, the sound is emitted at larger time intervals.
From level 12, the sound is repeated at shorter intervals. Once the fill
maximum is reached, a continuous tone is output.
1. If the device is partially filled, Fill mode can be manually started.
 Main menu  Pump  Fill mode  Start filling.
2.
Select the  Pump  Fill mode  Start filling  Start pump menu
items.
You might have to [delete the alarm] in the [Fill mode] menu.
Heat transfer liquid is pumped through the external consuming

unit.
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.
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.
If [Fill mode] is active, the device does not heat or cool. You can
only start the device after you end [Fill mode].
Integral process thermostats with flow control unit
Safety glasses
n
Protective gloves
n
Protective work clothing
n
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