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Testing the 4-20mA current loop
1. With the display function turned "On", the CM-6 will show the current concentration of CO or "0" (zero) in
clean air.
2. With the cover in place, direct the gas into the housing by placing the nozzle of the aerosol can onto the
sensor grate area (under DO NOT PAINT) and press for 4 to 5 seconds.
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 20mA at 200 ppm.
Note: If the 4-20mA output does not ramp up within a few seconds, there are four possibilities:
a. The gas is empty, expired or degraded, replace the gas cylinder.
b. The gas was not directed into the housing (direct the gas into the housing by placing the nozzle of
the aerosol can onto the sensor grate area and re-test).
c. Detector has 4-20 mA option set to "OFF". Set 4-20mA option to "On" and repeat the test.
d. Unit needs to be re-calibrated (go through the Field Calibration Procedure and re-test).
5. Wait for the display to return to 0 ppm and configure options to desired settings.
See the complete Macurco CM-6 User Instructions for factory settings, trouble codes, calibration and testing.
MACURCO FIXED GAS DETECTION PRODUCTS LIMITED WARRANTY
Macurco™, warrants the CME1-FTG field test gas will be free from defective materials and workmanship for a period of
two (1) years from date of manufacture (indicated on the gas bottle label), provided it is maintained and used in
accordance with Macurco instructions and/or recommendations. If any component becomes defective during the warranty
period, it will be replaced or repaired free of charge, if the unit is returned in accordance with the instructions below. This
warranty does not apply to units that have been altered or had repair attempted, or that have been subjected to abuse,
accidental or otherwise. The above warranty is in lieu of all other express warranties, obligations or liabilities. THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A
PERIOD OF ONE (1) YEARS FROM THE PURCHASE DATE. Macurco shall not be liable for any incidental or
consequential damages for breach of this or any other warranty, express or implied, arising out of or related to the use of
said gas detector. Manufacturer or its agent's liability shall be limited to replacement or repair as set forth above. Buyer's
sole and exclusive remedies are return of the goods and repayment of the price, or repair and replacement of non-
conforming goods or parts.
Manufactured by Aerionics, Inc.
Sioux Falls, SD
Email: info@aerionicsinc.com
Phone: 1-877-367-7891
Rev 05.07.2014
© Aerionics 2014. All rights reserved.
Macurco is a trademark of Aerionics, Inc.
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