Setup mode
OPERATION MANUAL
Chapter 4
Unistat® T300 Series
Liability for errors and misprints excluded.
V1.2.0en/12.05.15//14.06
58
4.4.1.1
Filling and venting externally closed 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 use and its con-
tents respected.
Observe the local regulations/work instructions.
Wear your personnel protective equipment (e.g. temperature-resistant safety gloves, safety
goggles, safety footwear).
Danger of slipping through contamination of floor and work area.
Semi-automatic venting
DAMAGE TO THE TEMPERATURE CONTROL UNIT
An elevated tolerance time for the pressure drop can damage the pump if the thermal fluid
level in the system is also too low.
Constantly monitor the thermal fluid level in the
>Sight glass<
[23]. Fill up the thermal fluid
during the venting phase so the thermal fluid level does not fall below the minimum mark in
the
>Expansion vessel<
[18].
Calculate whether the capacity of the
>Expansion vessel<
[18] can absorb the expansion volume
during operation. Assume the following volumes for this calculation: [Minimum filling capacity of
the temperature control unit] + [Volume of the
> Extra expansion vessel<
[19] (optional)]
+ [Volume of the thermal fluid hoses] + [Jacket volume of your application] + [10% / 100 K].
▪
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 and remove, if fitted, the die
>Isolating sleeve<
[27] (see page 24 in section
»Mounting/removing the isolating sleeve (optional)«
). The
>Isolat-
ing sleeve<
[27] can
only
be mounted in
externally open
systems in the
>Expansion vessel<
[18].
Open all valves, in case of standard devices the
>Venting valve expansion vessel<
[21] by turning
them anti-
clockwise (turn 90° left as far as it will go).
Carefully pour a suitable thermal fluid, using the filling accessories (funnel and/or beaker),
through the
>Filling port<
[17]. The thermal fluid flows from the
>Expansion vessel<
[18] into the
temperature control unit and over the hose connection to the external application. You can see
the fill level in the
>Sight glass<
[23].
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”.
Fill levels in the
>Sight glass<
[23]
