Huber KISS 1 Series, Operation Manual

Page: 52 / 56

Service/maintenance
OPERATION MANUAL Chapter 7
KISS Immersion Circulator
V1.2.0en/11.12.20//0.3.1
52
Mixing different thermofluids in a thermal fluid circuit
PROPERTY DAMAGE

Do
not
mix different types of thermofluid (such as mineral oil, silicone oil, synthetic oil, water,
etc.) in a thermofluid circuit.

The thermal fluid circuit must be rinsed when changing from one type of thermal fluid to an-
other. No residues of the previous type of thermal fluid may remain in the thermal fluid circuit.
The inner components of the temperature control unit must be dried out Need to avoid boiling
retardation during future uses (e.g. use of a silicone oil at temperatures above about 100 °C).
PROCEDURE

Drain the temperature control unit as described on page 38 in section
»Draining the bath thermostat«
.
Residual thermal fluid can remain in the pump chamber and the internal lines after draining. Leave
the temperature control unit with open valves for a while.

Leave the drain hose mounted to the
>Drain<
[8].

Check the fill level in the collecting container at the end of the drain hose. Follow the instructions on
page 15, section
»Proper disposal of resources and consumables«
for the disposal of thermofluid.

Close the drain valves on the temperature control unit by turning them clockwise (turn 90° right
as far as it will go).

Connect the
>Circulation flow<
[1] with the
>Circulation return<
[2] to the temperature control
using a bypass hose.
Perform the following steps without attaching a short circuit hose, if the application used by you (exter-
nally closed) is also dirty. In this case, leave your externally closed application connected to the tempera-
ture control unit. This rinses the temperature control unit and your application at the same time.

Fill
the system (minimum fill level) with the thermal fluid you wish to use. The filling process is
described on page 37 in section
»Filling and venting the bath thermostat and the externally
closed application«
.

Vent
the system as described on page 37 in section
»Filling and venting the bath thermostat
and the externally closed application«
.

Adjust the
setpoint
and the cut-out value of the
overtemperature protection
to the thermal
fluid used. The procedure can be found on page 34 in section
»Setting the setpoint«
and on
page 35 in section
»Setting the overtemperature (OT) protection«
.

Start
the
circulation
as described on page 40 in section
»Starting the temperature control pro-
cess«
. The length of rinsing depends on the level of soiling.

Stop
the
circulation
as described on page 40 in section
»Ending the temperature control process«
.

Drain
the temperature control unit as described on page 37 in section
»Filling and venting the
bath thermostat and the externally closed application«
.

Repeat the steps “Filling”, “Venting”, “Start/Stop circulation” and “Draining” until the drained
thermal fluid remains clear.

Remove the bypass hose after completely emptying the temperature control unit.
Leave an application connected, if you have simultaneously rinsed a used application (externally closed).

Leave the >Drain< [8] open for a while to allow the thermofluid to evaporate in the temperature
control unit.

Close the >Drain< [8] once the residual thermofluid has evaporated.

Dismount the drain hose.

Remove the collecting container.

Discard the collecting container, including its contents, properly. Follow the instructions on page
15, section »Proper disposal of resources and consumables« for the disposal of thermofluid.

Re-connect your application. (Only if you have rinsed the thermofluid circuit using a bypass hose.)
Example: Connecting a
short circuit hose