Huber Pilot ONE Unistat T3*0, Operation Manual

Page: 70 / 100

Setup mode
OPERATION MANUAL Chapter 4
Unistat® T300 Series
V2.4.0en/22.07.20//17.12
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Monitoring the temperature in the >Expansion vessel< [18].

Go to the “Categories Menu”.

Tap on the category “Safety”.

Tap on the category “Display OT values”. All measured safety temperatures are displayed.

Check the temperature in the >Expansion vessel< [18]. The degassing process is active if it in-
creases. Wait until the temperature in the >Expansion vessel< [18] no longer rises or even falls.

Go to the “Home” screen.

Tap on the keypad symbol next to “T
Setpoint
”.

Increase the setpoint by 10 K.

Confirm your entry by tapping on “OK”.

In the display that follows, confirm your entry again by tapping on “OK”.
The correct selection will be displayed graphically and the “setpoint” will be changed immediate-
ly. If tapping on “OK” is not correct, it will be displayed graphically for 2 seconds. Then the dis-
play will return to the “Home” screen again. Try changing the “setpoint” again.

Carry out temperature control until the temperature in the >Expansion vessel< [18] no longer
rises or even falls.

Check the temperature in the >Expansion vessel< [18] again.

Continue to increase the setpoint by 10 K increments until the temperature in the >Expansion
vessel< [18] no longer rises during an increase.

Now maintain the thermal fluid at the last temperature set until the >Expansion vessel< [18] has
reached ambient temperature.
The entire process can take several hours, depending on the degree of contamination and the
application size. Continue the control process until the temperature in the >Expansion vessel< [18]
has returned to ambient temperature.

Go to the “Categories Menu”.

Tap on the category “Temperature Control”.

Tap on the category “Start/Stop”.

Tap on the dialog entry “Stop degassing”.

Confirm your choice by tapping on “OK”.

Read the note and confirm by tapping on “OK”. Degassing stops immediately and the pump
continues to run for approx. 30 seconds. Wait until the pump stops.

Connect a suitable drain hose (must be compatible with the thermal fluid) to the >Expansion
vessel drain< [9] (if fitted) or >Drain< [8].

Place the other end of the hose in a suitable container, which is compatible with the thermal
fluid and the thermal fluid temperature.

Drain the >Expansion vessel< [18]. To do so, open the >Expansion vessel drain valve< [5] by turning it
counterclockwise (turn 90° left as far as it will go). Pay attention to the high temperature of the ther-
mal fluid. Please note on page 17 the section »Proper disposal of resources and consumables« .

Close the >Expansion vessel drain valve< [5] by turning it clockwise (turn 90° right as far as it will go).

Remove the drain hose and the container. Please note on page 17 the section »Proper disposal
of resources and consumables« .

Open the >Expansion vessel cap< [22] by hand.

Carefully pour new, original thermal fluid into the >Filling port< [17], using the filling accessories
(funnel and/or beaker). The fill level is displayed in the >Sight glass< [23] or on the
>Touchscreen< [88]. Do not mix different thermal fluids. Follow the instructions for cleaning the
filling accessories on page 17 in section »Proper disposal of resources and consumables« .

Close the >Expansion vessel cap< [22] by hand.

The de-gassing process is complete.
4.4.1.3 Draining externally closed applications
Hot or very cold thermal fluid
SEVERE BURNS/FROSTBITE OF LIMBS

Before draining, ensure that the thermal fluid has room temperature (20 °C).

If, at this temperature, the thermal fluid is too viscous to be drained: Control the temperature
of the thermal fluid for a few minutes until the viscosity will allow drainage. Never control the
temperature of the thermal fluid when the Drain is open.

Danger of burns when draining thermal fluids at temperatures above 20 °C.

Wear your Personal Protective Equipment for draining.

Only drain using suitable drainage hose and collecting container. These must be compatible
with the thermal fluid and its temperature.