Integral T process thermostats
21/01/2019 / YAWE 0026
Starting up
83
7.8
Warning and safety functions
7.8.1
Overtemperature protection and testing
The units are designed for operation with non-flammable and flammable liquids to
EN 61010-2-010.
Set the overtemperature switch-off point.
Recommended setting 5 °C above the setpoint.
Set the overtemperature switch-off point
below the flash point of the heat transfer
liquid
(
Section 6.4).
The actual switch-off point is indicated on the display,
e.g. max. 110 °C.
Adjustment range is 0
– 125 °C.
When operating with external control, set TiH (or
150 °C for option enlarged temperature range (
Section 7.6.4.3)) approx. 5 °C below the
overtemperature switch-off point!
When the potentiometer is being adjusted by more than 2 °C
display shows
(for approx. 4 sec) MAX and actual overtemperature switch-off point with 1 °C
resolution.
The potentiometer setting is the effective function. The display only assists in
making the adjustment.
Setting possible only up to the upper limit of the operating temperature range
+ 5 °C.
»
When the outflow temperature rises above the
overtemperature switch-off point:
1. a double signal tone sounds.
2. The display shows TEMP for overtemperature, the fault
triangle is flashing.
Heating is switched off on both poles,
Pump and refrigeration system are switched off.
Rectify the cause of the fault.
Wait until the outflow temperature has cooled down
below the switch-off point or set the switch-off point
higher than the outflow temperature. When the
indication TEMP appears on the display, then
Reset with the key.
