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5.7 Explanation of the speaker signals
The speaker signal can only be ended by pressing the STOP key.
5.8 OSD (Optical Status Display)
The OSD (Optical Status Display) (51) on the side of the operating
unit shows the most important statuses of the furnace. The
following activities are shown:
5.8.1 The start procedure
The handles blink white when the furnace is started. Once the
starting process is completed, the OSD lights up in white or green.
5.8.2 Setting the brightness
The brightness can be set in 5%-
steps in the menu "Settings"
(OSD system).
5.8.3 Deactivation
In order to deactivate the OSD,
the brightness has to be set to
0%.
No. Description of Description of
the occasion the speaker signal
1 Self-test successfully Short "self-test melody"
completed
2 Furnace head Speaker is switched on and plays
completely open and the melody selected by the user
the furnace for 10 seconds. If the signal is not
temperature having confirmed by pressing the STOP
dropped below key during this time, the melody
320 °C/608 °F is played again after 5 minutes for
5 minutes. After that, no further
acoustic signal will be played.
If the STOP key is pressed while the
signal is played (for 10 seconds or
5 minutes), the speaker is switched
off immediately. No further acoustic
signal will be played.
3 Error messages The speaker is switched on and
plays the "error melody". The
speaker can only be switched off by
pressing the STOP key.
4 Keyboard test active Each keystroke is confirmed with a
short beep (approximately 0.5 s.
ON)
5 Test or calibration Short "completion melody"
program successfully
completed
Colour Activity
white (blinking) The furnace is in the switch-on mode (self-
test active)
white Stand-by, the furnace is basically ready to
use
green Operating temperature B of the currently
selected program was reached by +/- 20 °C
yellow (blinking) Information, note or error message
orange Program is in the close-head or preheating
mode
red Program is in the heating mode
magenta Program is in the holding time H mode
blue Program is in the long-term cooling or open-
head mode