Sensor Poisons; End-Of-Life Signal; Maintenance; Sensor Life Reset - Macurco CM-6 Manuel

Macurco CM-6/CM-12 Manual (Rev-1.1) Eng
E.g. unit will display t0A if t02 and t08 exist at same time. Similarly, tC0 if t40 and t80 exist at the same time.
For trouble codes over 2 digits, the display will alternate 'tXX' and 't.YY' where XX corresponds to first two digits and YY
(note '.' after 't') corresponds to last two digits of trouble code. E.g. the display will alternate between t01 and t.00 for
t100, t02 and t.00 for t200 and t80 and t.00 for t8000.
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

5.2 Sensor Poisons

The 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.

5.3 End-of-Life Signal

The CM-xx has a long life, non-replaceable electrochemical sensor. Ten (10) years after the CM-xx is installed the sensor end-of-
life signal will be activated indicating that the CM-xx has reached the end of its typical usable life. The end-of-life signal will
cause an error code t200 "Sensor expired". See Section 5.1.2 "t" Error Codes.
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-xx initiates the initial end-of-life signal. After this 29-day period the CM-xx can
no longer be silenced, and the sensor must be calibrated, and the sensor life reset, or the CM-xx detector replaced.

6 Maintenance

The CM-6 is low maintenance. The unit uses a long-life electrochemical sensor that has a 10-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

6.1 Sensor Life Reset

1. Remove the Philips screw on the front of the CM-xx. 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.
REV – 1.1
Hexadecimal Representation
Decimal Number displayed on UNIT
10
11
12
13
14
15
Table 5-1 Hexadecimal Display
[34-2900-0511-6]
A
b
C
d
E
F
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