Macurco CM6-FCK User Manual
Macurco™ Carbon Monoxide Detector
Field Calibration Kit CM6-FCK
General
A Field Calibration Kit (CM6-FCK) is needed to complete a CO gas test. These are available through your local
representative or from Macurco.
Contents of the FCK
CM6-FCK: (2) Gas Cylinders, (1) 50ppm carbon monoxide (CO) in air and (1) 200 ppm
Gas regulator with about two feet of plastic tubing
Humidifier
Gas applicator caps
FCK Information
Several detectors can be calibrated with one FCK. The only limitation is the amount of gas in the cylinder. The
17 liter cylinder has approximately 85 minutes of continuous calibration run time. Replacement cylinders are
available. The gas cylinder should be replaced when the pressure gauge on the regulator shows 25-psi or less.
Note: For optimum test results it is suggested that the unit be in clean air (green light on) and be in
a low ambient air flow
Gas Testing
Testing the Fan Relay –
1. Remove the Philips screw on the front of the CM-6. Remove the front cover.
2. Open the FCK. Connect the 50 ppm gas cylinder to the regulator.
3. Check the pressure gauge on the regulator. If you have 25-psi or less you will need to replace the gas
canister.
4. Assemble regulator, hose and Test Hood and place the Test Hood over the CO sensor.
Note: The time to activate the Fan relay depends on the delay setting.
5. Turn on the regulator to start the gas flow and wait with the gas applied continuously.
1
6. With the display function turned “On”, the CM-6 will show the current concentration of CO or “0” (zero) in
clean air. When the CO concentration reaches the Fan Relay setting (35 ppm, for example) the display will
flash back and forth between “FAn” and “35”. With the display function turned ”Off”, the display does not
show the CO concentration, but will show “FAn” as long as the fan relay is activated.
Note: If the Fan relay does not close within 2 minutes, there are four possibilities:
a. Gas cylinder is empty, check the pressure gauge. Replace the gas cylinder if 25psi 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 fan relay set to disable (OFF) or 100ppm. Set fan relay to 25ppm and repeat the test.
7. Remove the gas from the sensor. Proceed to Test the Alarm relay or replace the top cover.
Testing the Alarm Relay
Note: The CO concentration to activate the Alarm relay depends on the setting.
1. Connect the 200ppm cylinder of carbon monoxide to the regulator.
2. Check the pressure gauge. If there is 25psi or less the cylinder should be replaced.
3. Place the Test Hood over the CO sensor. Turn on the regulator to start the gas flow.
4. The Fan relay should activate according to the settings.
5. With the display function turned “On” and the CO concentration reaching the Alarm Relay setting, (200
ppm, for example) the display will flash back and forth between “ALr” and “200”. The buzzer will sound
indicating “Alarm” if the buzzer is turned “On”. With the display function turned off the display does not
show the CO concentration, but will show “ALr” when the Alarm relay is activated.
6. Note: If the Alarm relay fails to operate within 2 minutes, there are four 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 Alarm relay set to disable (OFF). Set Alarm relay to 100 ppm and repeat the test.
7. Remove the gas from the sensor after Test. Proceed to Test the 4-20mA output or replace the top cover.
Testing the 4-20mA current loop
1. Connect the 200 ppm cylinder of carbon monoxide to the regulator.
2. Check the pressure gauge. If there is 25-psi or less the cylinder should be replaced.
3. Place the cap from the regulator over the CO sensor. Turn on the regulator to start the gas flow.
4. The Fan relay should activate according to the settings.
5. The Alarm relay should activate according to the settings.
6. The 4-20 mA output should ramp up from 4mA in clean air to 20mA at 200 ppm. See 4-20 mA diagram on
page 6.
Note: If the 4-20mA output does not ramp up within 2 minutes, there are four 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 4-20mA option to “On” and repeat the test.
7. Remove the gas from the sensor. Re-assemble the CM-6 (make sure the LED is aligned with the front case
hole). You are done.
Aerosol Carbon Monoxide Test
The CME1-FTG is an 11L 500 ppm Aerosol Carbon Monoxide Field Test Gas that can be used with the CM-6.
This field test gas allows installers to do a quick functionality test of the CO sensor. The flow rate of the CME1FTG is 10 Lpm so you will have about a minute of gas or enough to test 20-30 sensors.
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.
2
Loading...