RAEGuard 3 User Manual
27
7 First Time Switch on (Commissioning)
Note: The following procedure should be followed carefully and only performed
by suitably trained personnel.
Calibration is mandatory before the detector can be used for gas monitoring.
Refer to Section 8.1 Calibration for the proper procedure.
1. Remove the transmitter housing cover and detach the PCB block by
lifting the semi-circular handle and pulling the assembly away from
transmitter enclosure.
2. Refer to Section 4 to connect the cable and check that all electrical
connections are correct completely.
3. Switch on the external power supply to the transmitter at the safe area
gas detection controller (or PLC).
4. Using a Digital Multi Meter, check that the Supply Voltage should be
16VDC to 32VDC between the terminals "+24V" and "GND".
5. Switch off the external power to the detector.
6. Re-fit the PCB block and Cover.
Note: If you ordered a "Surge Protection Device(SPD)", please mount it into the
enclosure first, and then connect the blue, red, black and white on the SPD with
the "Grounding point", "+24 V", "GND", "20 mA" on the "PCB module" (see
Section 4). In this way, the power supply and signal loop have a surge protection
function. The “+V” “-V” and “4-20 mA” of the upper system or controller will be
connected to the green 3-pin terminals “+24V”, “GND” and “20 mA” on the SPD
7. Switch on external power to the detector.
8. The transmitter enters inhibit mode, and the startup sequence is as
Warning
The following procedure requires the Transmitter Cover to be removed while carrying out supply
voltage checks. Therefore, the appropriate permits to work should be sought in preparation.
Prior to carrying out any HOT WORK ensure local and site procedures are followed.
Ensure that the associated control panel output actuation is inhibited so as to prevent false
alarms.
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