Operator's manual Owner's manual

15
Gas sampling and gas conditioning technology 10-5.1-ME
16.7 NORMAL OPERATION
In this operating mode the heated protective housing operates continuously and heats and controls to
the set temperature. On the PAS-400 – 500 the fan is running continuously.
Setting the temperature:
Hold down the SET key and set the required temperature set point with the push/turn control.
After the SET key has been released the display flashes briefly the temperature set point.
The display then changes to the actual current temperature and the controller starts to control to the
selected temperature set point.
16.8 TIMER OPERATION
In this operating mode the heated protective housing operates on the timer; it heats/controls to the set
temperature and maintains this temperature until the set time has elapsed. The clock symbol is
flashing during timer operation, then the heating is switched off; on PAS-400 – 500 the fan runs on for
30 minutes. The timer display shows END.
- The time can always be set to OFF, the heating is then switched off and the timer display shows
END.
- Time is counted down, it is always possible to see how long the heated protective housing will
remain switched on.
Setting the temperature:
Turn the push/turn control clockwise until the temperature display is flashing.
Hold down the SET key and set the required temperature set point with the push/turn control.
After the SET key has been released the oven flashes briefly the temperature set point. The display
then changes to the actual temperature and the controller starts to control to the selected temperature
set point.
Setting the timer:
Turn the push/turn control anticlockwise until the timer display is flashing.
Hold down the SET key and set the required operating time with the push/turn control.
16.9 TEMPERATURE MONITOR AND PROTECTION DEVICES
16.9.1 TEMPERATURE LIMITER (TB)
All devices are equipped with a mechanical temperature limiter (TB) Protection Class 1 to DIN 12 880.
If the electronic monitor system should fail during operation and the fixed factory-set maximum
temperature is exceeded by approx. 20°C the temperature limiter switches off the heating permanently
as a final protective measure. The alarm symbol lights up as warning.
Fault rectification after the TB cut-out has been activated:
1. Switch off the heating and allow it to cool down
2. Rectify the fault (e.g. replace temperature probe) and where appropriate contact customer service
3. The oven is again ready for operation only after it has cooled down and after the fault has been
rectified.