Huber Pilot ONE Unistat T3*0, Operation Manual

Page: 72 / 100

Setup mode
OPERATION MANUAL Chapter 4
Unistat® T300 Series
V2.4.0en/22.07.20//17.12
72
Thermal fluid flowing over into the temperature control unit
MATERIAL DAMAGE

If the temperature control unit is installed below the externally open application, the thermal
fluid will escape from the
>Expansion vessel<
[18] and from the
>Sight glass<
[23] (if present).

Shut down the temperature control unit immediately.

Isolate the temperature control unit from the power supply.

Have the temperature control unit only serviced and cleaned by staff trained by Huber. Please
note on page 17 the section »Proper disposal of resources and consumables« .
Overflowing thermofluid will create a film on surfaces, and therefore must be collected and dis-
posed of immediately after the event in accordance with the safety data sheet. Follow the instruc-
tions on page 17, section »Proper disposal of resources and consumables« for the disposal of
thermofluid and material.
If this is not complied with, it is assumed that the temperature control unit does not comply with
all requirements of DIN EN 61010-2-010.
▪
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

Check that the
>Expansion vessel<
[22] was locked (see page 33 in section
»Locking/unlocking
the expansion vessel [18]«
). The
>Expansion vessel<
[18]
must
be locked when an
externally
open
application is used. Consequently, the
>Expansion vessel<
[18] is closed off from the exter-
nally open application and you can also place the temperature control unit below the externally
open application.

Fill suitable thermal fluid into the bath vessel. The thermal fluid flows over the return line into
the temperature control unit and over the flow line to the bath vessel. Thereby the air in the
temperature control unit reaches the outside. Follow the instructions for cleaning the filling ac-
cessories on page 17 in section
»Proper disposal of resources and consumables«
.

Go to the “Categories Menu”.

Tap on the category “Temperature Control”.

Tap on the category “Start/Stop”.

Tap on the dialog entry “Start venting”.

Confirm your choice by tapping on “OK”.

Confirm the preset time interval by tapping on “OK”. Alternatively, use the numeric keypad that
appears to enter an individual time interval. Confirm your entry by tapping on “OK”. Venting will
start. Make sure the
“Min” mark
in the bath vessel (top edge of the back flow + approx. 1 cm
safety) is not undercut. Venting stops if the level in the bath vessel falls below the
“Min” mark
.
Refill thermal fluid and restart venting. Depending on the temperature control unit and the con-
nected application, this process must be repeated several times. The venting process can only be
restarted after the time interval has elapsed if a time interval indicated in the
>Status line<
[Field
10] runs backwards.
The volume expansion of the thermal fluid depends on the working temperature range you wish to
work in. A
“Min” mark
must not be undercut in the bath vessel (top edge of the back flow + ca. 1 cm
safety) at the “lowest” working temperature and a
“Max” mark
must not be exceeded in the bath vessel
at the “highest” working temperature. In the event of overfilling a table-top model and prior to starting,
drain thermal fluid into a suitable container via
>Drain<
[8] by additionally opening the
>Drain valve
thermal fluid<
[3] (by turning it counterclockwise (turn it 90° to the left as far as it will go)) or by skim-
ming off bath liquid from the bath. In case of free-standing models, drain thermal fluid via
>Drain<
[8]
and by opening the
>Drain valve thermal fluid<
[3] (by turning it counterclockwise (turn 90° to the left
as far as it will go)). Check if the thermal fluid can be reused. On page 17 observe Section
»Proper dis-
posal of resources and consumables«
. The pump sucks air instead of thermal fluid if there is too little
thermal fluid. This “dry run” of the pump is detected by the sensors and the electronics and a safety
shutdown occurs. Therefore, please provide for sufficient thermal fluid.

Stop venting. To do this, go to the category “Temperature Control”.

Tap on the category “Start/Stop”.

Tap on the dialog entry “Stop venting”.

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.