Setup mode
OPERATION MANUAL
Chapter 4
Unichiller®
V2.3.0en/07.06.19//17.12
62
▪
During the fill process, ensure any necessary measures, such as earthing the tanks, funnels and
other aids, have been taken.
▪
Fill to the lowest possible height.
PROCEDURE
Open the
>Expansion vessel cap<
[22] by hand.
Carefully pour suitable thermofluid, using the filling accessories (funnel and/or beaker) into the
>Filling port<
[17]. The thermofluid flows from the
>Expansion vessel<
[18] into the temperature
control unit and over the hose connection to the external application. You can see the ther-
mofluid level on the Pilot ONE
>Touchscreen<
[88]. Follow the instructions on page 15 , section
»Proper disposal of resources and consumables«
for the cleaning of the filling accessories.
Before starting the venting process, fill the
>Expansion vessel<
[18] from 50 to 70%.
Go to the “Categories Menu”.
Tap on the category “Temperature Control”.
Tap on the category “Start/Stop”.
Tap on the Dialog entry “Start air-purge”.
Confirm your choice by tapping on “OK”.
Using the number keypad that appears, enter the time interval for the ventilation. The default is
0.5 minutes.
Confirm your entry by tapping on “OK”. Venting will start.
If, with externally closed applications (reactors), the fluid level in the fill level display remains the
same when the pump is running and when the pump has stopped, the application has been vent-
ed.
Stop venting. To do this, go to the category “Temperature Control”.
Tap on the category “Start/Stop”.
Tap on the dialog entry “Stop air-purge”.
Confirm your choice by tapping on “OK”. Venting is stopped and the pump continues to run for
approx. 30 seconds. Wait until the pump stops.
Close the
>Expansion vessel cap<
[22] by hand.
Venting
must be performed especially during commissioning and after thermal fluid. This is the
only way to ensure trouble-free operation.
Note that the volume expansion of the thermal fluid depends on the working temperature range
you wish to work in. At the “lowest” working temperature, do not go beyond the
minimum
mark
of the
>Sight glass<
[23] and at the “highest” working temperature there should be no overflow
from the
>Expansion vessel<
[18]. In case of overfilling, drain the excess amount of thermal fluid
(see page 63 in Section
»Draining externally closed applications«
). Check if the thermal fluid can
be reused. On page 15 observe Section
»Proper disposal of resources and consumables«
.
Thermal fluid level on
the
>Touchscreen<
[88]
