Field Calibration Procedure - Macurco CM6-FCK User Instructions

3. Check that the CM-6 status indicator light is illuminated, Green continuously. If not, do not proceed with tests. See CM-6
Onboard Diagnostics section.
4. The display option should be set to "On" and reading 0 ppm in clean air.
5. With the CM-6 cover on, aim the nozzle of the aerosol can into the sensor grate area (under DO NOT PAINT) and press for 2
to 3 seconds.
6. Wait for a few seconds. The digital display should climb indicating the increased CO concentration at the sensor confirming a
pass of the quick test.
Note: If the Display does not change within 10 seconds, there are four possibilities:
a. Gas cylinder is empty, replace the gas cylinder.
b. Unit needs to be re-calibrated (go through the Field Calibration Procedure 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 ppm and configure options to desired settings.

FIELD CALIBRATION PROCEDURE

Note: For optimum calibration results the unit should be in clean air and be in a low ambient air flow.
1. Remove the Philips screw on the front of the CM-6. Pull the front cover of the unit off.
2. Assemble the 200 ppm gas cylinder and regulator together.
3. Check the pressure gauge on the regulator. If you have 25-psi or less you will need to replace the gas canister.
4. Place the test Hood from the regulator over the CO sensor.
5. Push Next 3 times to get to the CAL menu then push Enter. The display will flash back and forth between GAS and 200.
6. Start applying gas to the CO sensor.
Note: The sensor will look for the gas for 45 seconds. If no gas is applied or detected in that time, the display will return to CAL.
7. When the sensor detects the gas, the display will flash back and forth between the CO concentration and SPn, then the
calibration will progress and the display will show the gas level for a maximum of 165 seconds.
8. When the calibration is successful, the display will flash back and forth between CO concentration and PAS, then the display
will show the calibration gas level and the calibration is done.
9. If the calibration fails, the display will flash back and forth between the CO concentration and FAL (fail). If this occurs, check the
pressure gauge on the regulator. If the pressure is less than 25 psi the flow of gas may not be adequate to properly calibrate
the unit. If there is proper pressure in the cylinder repeat steps 4 through 6. If the unit fails to calibrate twice contact Technical
Assistance: 1-877-367-7891.
10. Once the calibration has passed, remove gas and disassemble the cylinder and regulator.
11. Re-assemble the CM-6 (make sure the LED is aligned with the front case hole). You are done.
12. See Calibration Flowchart on the inside of the housing.
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