Samon GD-24/230 Mode D'emploi page 10

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GD/GS/GSR/GR/GK-24/230 Operating Manual
1. Cautions and Warnings
WARNING
The unit must only be opened by authorized personnel!
No matter if power supply is removed the unit can still have external high voltage
over the volt free contacts.
2. Alarm Levels, Factory Settings
Ammonia (NH3) 0-4000 ppm
HFC, HFO, HCFC 0-4000 ppm
HC 0-50 %LEL
3. Function
When power supply is switched on, a green LED will flash to indicate power "ON". This will also start the heating
process of the sensor. After approximately 4 minutes the green LED will light and indicate "Sensor Active".
The detector has one yellow and two red LEDs. The yellow LED indicates low gas concentration (Alarm C) and
the red LEDs indicate medium gas concentration (Alarm B) and high gas concentration (Alarm A).
When gas is detected the LEDs (2 - Fig. 1) will light and the relay corresponding to the alarm level will change
state. If alarm delay is chosen (see below) the respective LED will flash, and it will light (and the relay will
change state) when the chosen delay time is exceeded.
4. Service Function
Pressing the "Reset/Test/Service" button (5 - Fig. 1) for 10 seconds will disengage all alarm functions for 60
minutes. During this period, it is always possible to start a new 60-minutes period by pressing the button for 10
seconds again. Return to active status happens automatically at the end of the 60-minutes period or may be
done manually by a single press on the "Reset/Test/Service"-button. When the service function is activated all
LED's will flash and all relays will be in normal mode position.
See Fig. 3.
5. Installation/Positioning
The general rule is that the detector should be placed as close to the potential leak as possible, and at the same
time consider the gas density and any air movements in the room. The detector must also be positioned in such
a way that it is easily accessible for service. See Fig. 5 for suggestions on suitable placement.
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GD/GS/GSR/GR/GK-24/230
C=150 ppm B=500 ppm
C=100 ppm B=1000 ppm
C=5 %LEL B=10 %LEL
A=3000 ppm
A=2000 ppm
A=20 %LEL
1.1 n 1 - Delay
1.2 n 2 - Delay
1.3 n 3 - Alarm reset: ON=Auto, OFF=Manual
1.4 n 4 - Not used
2.1 LED A
2.2 LED B
2.3 LED C
2.4 Power
3.1 GV Offset
3.2 +5 VDC
3.3 (-)
3.4 ALARM C
3.5 ALARM B
3.6 ALARM A
3.7 Test terminal
4.1 A adjustment
4.2 B adjustment
4.3 C adjustment
5 Reset/Test/Service
IS Gx Serie 200728