Huber Pilot ONE Unistat T3*0, Operation Manual

Page: 71 / 100

Setup mode
Chapter 4 OPERATION MANUAL
V2.4.0en/22.07.20//17.12
Unistat® T300 Series
71
PROCEDURE

Connect a suitable drain hose to the >Drain< [8].

Connect a suitable drain hose to the >Expansion vessel drain< [9] (if present).

Stick both ends of the hoses into suitable containers (e.g. original canister, which is compatible
with the thermal fluid).
Not all temperature control units are equipped with the same combination of drain valves. Skip
the point if your temperature control unit is not equipped with the drain valve indicated.

Open the >Drain valve thermal fluid< [3] by turning it counterclockwise (turn 90° left as far as it
will go).

Open the >Expansion vessel drain valve< [5] by turning it counterclockwise (turn 90° left as far
as it will go).

Wait until the thermal fluid has drained from the external application via the pump chamber and
the draining hose into the container.

Have another suitable container (e.g. a tub) ready to catch the thermal fluid from >Emptying of
residues< [10] (if present).

Remove the knurled screw to the >Drain< [10] (if present). The remaining thermal fluid will flow
from the temperature control unit into the container as soon as you have opened the knurled
screw.

Drain the external application. The description for the drainage procedure can be found in the
documents you received with the application.

Open the connection >Circulation flow< [1].

Open the connection >Circulation return< [2]. Leave the temperature control unit open for a
while to dry out (without screw caps and with the drain valve open).

Connect the connection >Circulation flow< [1] with your application.

Connect the connection >Circulation return< [2] with your application.

Re-fit the knurled screw to the >Emptying of residues< [10].

Close the >Drain valve thermal fluid< [3] by turning it clockwise (turn 90° right as far as it will go).

Close the >Expansion vessel drain valve< [5] by turning it clockwise (turn 90° right as far as it will go).

Remove the drain hose from the >Drain< [8].

Remove the drain hose from the >Expansion vessel drain< [9] (if present).

Remove the containers used to collect the thermal fluid. Check if the thermal fluid can be reused.
When disposing of the thermal fluid, observe on page 17 observe Section »Proper disposal of re-
sources and consumables« .
4.4.2 Externally open application
Operating an externally open application with unlocked >Expansion vessel< [18]
BURNS/FROSTBITE DUE TO OVERFLOWING EXPANSION VESSEL

Shut down the temperature control unit immediately.

Allow the thermal fluid to cool down/heat up to room temperature.

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).

If the externally open application stands below the temperature control unit, overflowing from
the externally open application will occur.

Prior to commissioning the temperature control unit with an externally open application, lock the
>Expansion vessel<
[18] (see page 33 in section
»Locking/unlocking the expansion vessel [18]«
).
4.4.2.1 Filling and venting externally open application
Non-compliance with the safety data sheet for the thermal fluid to be used
INJURIES

Risk of injury to the eyes, skin, respiratory tract.

The safety data sheet for the thermal fluid to be used must be read prior to using it and its
content must be respected.

Observe the local regulations/work instructions.

Wear your personal protective equipment (e.g. temperature-resistant safety gloves, safety
goggles, safety footwear).

Danger of slipping because floor and work area are contaminated. Clean the work station and
follow the instructions for the disposal of thermal fluid and material on page 17 in section
»Proper disposal of resources and consumables« .