Maintenance; Sensor Life Reset - Macurco CX-6 Manuel D'instructions

Macurco CX-xx Manual (Rev-1.0) Eng

6 Maintenance

The CX-xx is low maintenance. The unit uses two electrochemical sensors that have a 2-year life expectancy (in
normal conditions). The detector's performance should be tested regularly by using gas as detailed in the Gas
Testing and Field Calibration Procedure 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

To reset the sensor life,
1. Remove the Philips screw on the front of the CX-xx. Pull the front cover of the unit off.
2. From normal or warm-up mode, press Next 4 times to get to "SEn" or Sensor Mode.
3. Press Enter. The display will read "rSt.C".
a. To reset the CO sensor life, press Enter.
b. To reset the NO2 sensor life, press Next once. The display will read "rSt.n". Press Enter.
4. If the sensor life has already been reset, done "don" will be displayed. If it has not already been reset, "no"
will be displayed. Press Next to change it to "YES" (flashing).
5. Press Enter to confirm the change (solid) and press Enter again to return to the "SEn" menu.
6. Press Next until "End" is displayed.
7. Press Enter to get back to normal operation. The sensor life will be reset for 2 years.
NOTE: Once the corresponding sensor life is reset, the unit will display calibration overdue for the corresponding
sensor forcing the user to calibrate the unit before use. After a successful field calibration, the calibration overdue
will be resolved, and the detector will go into normal mode.
NOTE: The detector does not need to be replaced when a sensor is expired. Once it displays sensor expired, the user
can replace the sensor on the detector, calibrate the unit and start using it.
Do not disassemble unit or attempt to repair or modify any component of this
instrument. This instrument contains no user serviceable parts, and substitution of
components may impair product performance.
CAUTION
Avoid the use of harsh cleaning materials, abrasives and other organic solvents. Such materials may permanently
scratch the surfaces and damage the display window, labels, sensor or instrument housing. High voltage terminals
(100-240VAC) are located within this detector, presenting a hazard to service technicians. Only qualified technicians
should open the detector case and service the internal circuits. Ensure power is removed from the detector prior to
cleaning the unit. Failure to do so may result in sickness or death.
REV – 1.1
WARNING
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