Quick Gas Test - Macurco GD-6 Instructions D'utilisation

1. Check the pressure gauge. If there is 25-psi or less the cylinder should be replaced.
2. Place the test hood from the regulator over the gas sensor. Turn on the regulator to start the gas flow.
3. The fan relay should activate according to the settings.
4. The alarm relay should activate according to the settings.
5. The 4-20 mA output should ramp up from 4mA in clean air to 20 mA at 50% LEL. See 4-20 mA diagram in these User
Instructions.
Note: If the 4-20mA output does not ramp up within 2 minutes, consider these possibilities:
a. Gas cylinder is empty, check the pressure gauge. Replace the gas cylinder if 25-psi or less.
b. Unit needs to be re-calibrated (go through recalibration and re-test).
c. Detector is in need of servicing (return unit to factory for servicing).
d. Detector has 4-20 mA option set to "OFF". Set 4-20 mA option to "On" and repeat the test.
6. Remove the gas from the sensor. Re-assemble the GD-6 (make sure the LED is aligned with the hole on the front of the case).

Quick Gas Test

A butane cigarette lighter can be used to perform a functionality test of the GD-6. This test allows installers to do a quick functionality
test of the gas sensor.
1. Units to be tested must be powered continuously for a minimum of 3 minutes before proceeding.
2. For optimum test results, the unit should be in clean air and be in a low ambient air flow.
3. Check that the GD-6 status indicator light is illuminated, green continuously. If not, do not proceed with tests. See GD-6
Trouble Indicator section in these User Instructions.
4. The display option should be set to "On" and reading 0% LEL in clean air.
5. With the GD-6 cover on, aim the lighter into the sensor grate area (under "DO NOT PAINT") on the front cover and release the
gas (without igniting the flame) for 1 second or less
6. Wait for a few seconds. The digital display should climb indicating the increased gas concentration at the sensor confirming a
pass of the quick test.
Note: If the Display does not change within 10 seconds, consider these possibilities:
a. Lighter is empty.
b. Unit needs to be re-calibrated (go through the Field Calibration Procedure in these User Instructions
and re-test).
c. Detector is in need of servicing (return unit to factory for servicing).
7. Wait for the display to return to 0% LEL and configure options to desired settings.
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