65-2662XL-04 M2A-XL Transmitter
Chapter 7: Maintenance
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Chapter 7: Maintenance
Overview
This chapter describes procedures for performing preventive maintenance, troubleshooting,
calibrating the M2A-XL, and replacing field replaceable parts.
Preventive Maintenance
This section describes a recommended preventive maintenance schedule to ensure the optimum
performance of the M2A-XL. It includes daily and quarterly procedures.
Daily
Verify a display reading of 0 ppm. Investigate significant changes in the reading.
Quarterly
Calibrate the M2A-XL as described in “Calibration” on page 41. See “Calibration Frequency” on
page 39 for a discussion of calibration frequency guidelines.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the M2A-XL.
NOTE:
This troubleshooting guide describes M2A-XL problems only. If the M2A-XL is
connected to a controller, see the controller operator’s manual for problems you may
encounter with the controller.
Table 7: Troubleshooting the Carbon Monoxide Detector
Condition
Symptom(s)
Probable Causes
Recommended Action
No Power
The display back
-
light is off and the
display screen is
blank.
• The power wiring is
disconnected or
misconnected.
• The display cable is
disconnected or
misconnected.
1. Verify that the wiring to the
power source or controller is
correct and secure.
2. Verify that the ribbon cable
connecting the terminal PCB to
the control PCB is securely
installed. This ribbon cable plugs
into a connector on the top edge
of the control PCB and on the
bottom of the terminal PCB.
3. If the power difficulties continue,
contact RKI for further
instruction.