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9
GS300Mc Operation test proceedure
Before powering up the GS300Mc once again check that all electrical connections are correct.
1
Apply 230VAC supply to the Ph and N terminals. Ensure that the correct fuse is used in the supply (3A or 5A max)
2
All of the LEDs on the fascia will illuminate in sequence which allows an oppurtunity to visually check the functionality of all the LEDs.
This process takes approximately 20 seconds.
3
The ON LED will remain flashing for 90 seconds. During this period the GS300Mc is in warm up phase. Gas detection functionality is
not available during this period.
When the ON LED remains stable the GS300Mc is in full operation mode.
4
Please note:
The GS300Mc is not in override, the following step will activate relay outputs when Alarm level readings are exceeded.
By pressing and holding the TEST button a function test can be performed for all Pre-Alarm and Main Alarm relays together with LEDs
and internal buzzer. If a full test is required then hold the TEST button until 300ppm or 20%LEL reading is exceeded to activate all
relays.
The sequence will be:
(a) At 8% LEL/ 120ppm reading - Pre-Alarm no.1 relay actuated, 1
st
ALARM LED illuminates and Terminal 6 and 7 will be connected.
(b) At 13% LEL/ 200ppm reading - 1
st
ALARM outputs listed in step (a) are all deactivated (Relay, LED and Terminal connections) .
Pre-Alarm no.2 relay actuated, 2
nd
ALARM LED illuminates and Terminal 8 and 9 will be connected.
(c) At 20% LEL/ 300ppm reading - The Main Alarm relay is actuated, MAIN ALARM LED illuminates and Terminal 10 and 11 will be
connected and terminals 10 and 12 will be broken and the
audible alarm
will continue to sound (With Positive Safety On terminals 10
and 11 will be broken and terminals 10 and 12 will be connected).
The relevant Alarm LED will illuminate to show which zones are in alarm.
By releasing the TEST button the LED will go out and the audible alarm will stop. If latched alarm function on the main relay is
configured this will remain on until the RESET button is pressed.
5
In order to conduct a full function test and calibration it is essential to use Duomo (UK) Ltd or equivalent calibrated test gas. The
maximum concentrations are:
40% Methane (CH4) in Air
350ppm Carbon Monoxide (CO)
0.85% (MOL) for Propane
Any higher can reduce sensor lifespan. Note:
NEVER TEST WITH NEAT GAS. THIS WILL POISON THE SENSOR.
6
To simulate a sensor fault and test associated outputs:
Disconnect the sensor plug The detector will go into FAULT ALARM and the sensor fault relay will be actuated as well as the
FAULT LED. This will
open
the contacts between terminals 4 and 5 and open the contacts between terminals 10 and 12 (Main
Alarm relay). When the plug is reconnected the detector can be reset by pressing the RESET button.
