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NOTE: For trouble codes over 080 the display will alternate between t_1 and t00 for t100 and between t_2 and t00 for t200.
If the error mode repeats frequently, check for continuous power and proper voltage. If power is not the problem and a unit has
repeating error conditions, it may need to be returned to Macurco for service, per these User Instructions.
If the error mode indicates “Sensor expired” see the Sensor Life Reset section of these User Instructions.
Sensor Poisons
The gas sensor in the detector is designed with extreme sensitivity to the environment. As a result, the sensing function may be
deteriorated if it is exposed to contaminants, a direct spray from aerosols such as paints, silicone vapors, etc., or to a high density of
corrosive gases (such as hydrogen sulfide, sulfur dioxide) for an extended period of time.
MAINTENANCE
The CM-6 is low maintenance. The unit uses a long life electrochemical sensor that has a 7 year life expectancy (in normal conditions).
The detector’s performance should be tested regularly by using gas as detailed in the Testing and Field Calibration sections. All
maintenance and repair of products manufactured by Macurco are to be performed at the appropriate Macurco manufacturing facility.
Macurco does not sanction any third-party repair facilities.
End-of-life Signal
The CM-6 has a long life, non-replaceable electrochemical sensor. Seven (7) years after the CM-6 is installed the sensor end-of-life
signal will be activated indicating that the CM-6 has reached the end of its typical usable life. The end-of-life signal will cause an error
code t200 “Sensor expired”. See Error Codes section. The end-of-life signal can be silenced for 48 hours by pressing the
"ENTER/TEST" button or by temporarily dropping power to the unit. The end-of-life signal provides the user an opportunity to test
and/or calibrate the sensor assuring that it is still performing within acceptable parameters though the sensor is nearing the end of its
expected life. The silence function will continue to be available for 29 days after the CM-6 initiates the initial end-of-life signal. After this
29 day period the CM-6 can no longer be silenced and the sensor must be calibrated and the sensor life reset or the CM-6 detector
replaced.
Sensor Life Reset
1.
Remove the Philips screw on the front of the CM-6. Pull the front cover of the unit off.
2.
To reset the sensor life (rSt), from normal or warm-up mode, press the Next button four times to get to “SEn” or Sensor Mode.
3.
Then press the Enter button to get to “rSt” - Reset Sensor Mode.
4.
Press the Enter button again to see the sensor reset status. If the sensor life has already been reset, done “don” will be
displayed. If it has not already been reset, “no” will be displayed. Push Next to change it to “ YES” (flashing) then push Enter to
confirm the change (solid) and push Enter again to return to "rSt” in the “SEn” menu. Push Next until “End” is displayed then
push Enter to get back to normal operation. The sensor life will be reset for 1 year.
NOTE: If the sensor is reset and the detector not replaced, it is necessary to test and/or calibrate the sensor to assure that it is still
performing within acceptable specifications though the sensor is nearing the end of its expected life. There will be no other indication of
sensor performance.
