Resetting the Over-Temperature
To reset the over-temperature controller, power cycle the product by turning the
instrument switch off, then on again.
3.4
Process Timer (if fitted)
To set a process time:
Press the P key; t1 shows momentarily on the display and the SET/ CNT light flashes
quickly. Use the arrow keys to adjust the process time, which is in hours and minutes
(hr.mn). Wait 5 seconds without pressing a key, or press the U key once and the display
returns to normal.
If a process time of zero is set then the timer is disabled and the controller operates as
though the timer is not present.
To start the timer:
Press the U key once. Timing starts. The SET/ CNT light flashes slowly while timing is in
progress and the display counts down (at the end of each minute).
At the end of timing the OUT light comes on continuously and power to the temperature
controller is cut off.
To reset the timer after timing has finished:
Press the U key once. The timer is now idle: it is not stopping the oven from heating,
nor is it timing.
Power is only supplied to the temperature controller when the timer is reset or is timing.
To stop the timer during timing: press U during count down to stop the timer. The
temperature controller remains on. It is not possible to resume timing: pressing U again
will reset the timer.
3.5
Calibration
If the process requires an accurate temperature display it is possible to calibrate the
controller by entering a single temperature offset value as follows:
Please contact Carbolite Gero Service for detailed instructions on entering an offset in
the R38 Controller.
11
3.0 R38 Controller
