21
Setting the over-temperature switch
(also valid for chillers with heating)
General Information
The over-temperature switch is an independent function of the temperature control unit.
The over-temperature tripping value of the heating and circulation may be set by using a
tool (e.g. screwdriver). The constant monitoring of the internal temperature provides
safety for the connected application. It should be set immediately after having filled the
device with the thermal fluid.
Warning!
The over-temperature switch should be tested at least monthly, and after changing the
thermal fluid.
The over-temperature switch should be set at least 25 K below the flame point of the
thermal fluid.
When received, the cut-off will be set to 35 °C.
If the temperature of the thermal fluid is higher then this value when filled the machine
switches off (
STOP to DIN EN 61010
) and an alarm will be given after a short time.
After removing cause of the error (e.g. by using a thermal fluid with a higher burning
point and the correct setting of the over-temperature protection) start the device again.
Entering a set point
You can enter a set point by pressing the
SET-Key
and
ARROW UP
or
ARROW DOWN
Key
simultaneously.
Starting temperature control
Temperature control and circulation may be started / stopped via the
ON / OFF
key. Any
air trapped in the system may be vented via the bath / sight glass (if available) or via
the opening at the filling nozzle with external closed applications. After filling and fully
air purging the temperature control unit can be started.
Ending temperature control
The temperature control can be ended at any time by pressing the
ON / OFF
key.
