FDL (E2.1) 05/2016 page 20/75
5. Start up
After connecting the electrical supply (chap. 4.2), you can turn on the chamber.
After loading the chamber, close the chamber door.
• Turn on the chamber by setting the main power switch (1) to position “I”.
Indicator light “AIR” (3) is lit, indicating that the heating has not yet been released by the air flow moni-
toring.
As an additional indication there is an acoustical signal which can be reset on the controller with the
“EXIT” key. The visual indication “RESET ALARM” on the controller is shown until the prepurge is over
and the heating has turned on.
(If the chamber was turned off after reset of the acoustical signal but still during prepurge or if the door
was opened, there is no further acoustical signal after turning on the chamber again.)
• Press pushbutton “START” (4). The fan starts running.
As required acc. to EN 1539:2015, the exhaust air flow is continuously monitored during prepurge of
the interior.
After approx. 2 minutes of prepurge, the heating is enabled; and the indicator light “AIR” (3) turns off.
Now you can also reset the visual indication “RESET ALARM” on the controller with the “EXIT” key.
• Set the temperature set point (chap. 6).
When loading the oven with solvent-containing material, do not exceed the maximally permitted sol-
vent quantity for the selected drying temperature. Refer to the solvent curve at the oven front, chap.
2.3.
• Adjust the temperature safety device according to the selected set-point (chap. 12.1).
Detach the plastic cover over the temperature safety device class 2 (2) with a suitable Phillips screw-
driver, and then set the temperature safety device (2) to the maximum permissible drying temperature
(chap. 12.1) and restore the plastic cover to prevent misadjusting.
After reaching the set drying temperature, the heating keeps it constant by turning on and off regularly.
You can verify this on the controller display.
Behavior after door opening during drying operation:
• If the door is opened briefly (less than 2 minutes) the heating turns off, but there is no disconnection of
the fan. After closing the door the drying process continues automatically.
• If the door is opened for longer (more than 2 minutes), fan and heating turn off, so that the drying pro-
cess is interrupted. The indicator light “AIR” (3) lights up, and as an additional indication there is an
acoustical signal which can be reset on the controller. To release the heating and restart the drying
process, new prepurge is required: press pushbutton “START” (4).
Warming chambers may release odors in the first few days after commissioning. This is not a quality
defect. To reduce odors quickly we recommend heating up the chamber to its nominal temperature for
one day and in a well-ventilated location.
5.1 Settings at the RD3 program controller
After turning the chamber on with the main power switch (1), pressing pushbutton “START” (4) and com-
pleting the prepurge, the controller is in Normal Display / fixed value operation mode.
Depending on the temperature value entered before LED (3a) is lit if the heating is active, or no LED if the
actual temperature is equal to or above the set-point.
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