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Gas Monitor 1ACO One-Channel Monitor
6 PREVENTIVE MAINTENANCE
This section covers all aspects of the Gas Monitor 1A1 series monitor. First, a description of
general maintenance is given followed by a verification of operation and sensor replacements.
6.1 GENERAL
The monitor unit should be brushed or wiped clean, once a year or more, of any dust or dirt that
settles on it, depending on the accumulation.
The unit SHOULD NOT be submerged in water or other liquids. Also, hosing and other
conditions that could cause a liquid to enter the enclosure should be avoided.
6.2 SCHEDULED CALIBRATION
To verify the operation of the system, make sure that the green power LED indicator is on
steady state. Push and hold the test button to verify the audio and WARNING and ALARM
relays are operational.
It is recommended that the AMC S2e (CO) be calibrated a minimum of twice a year, and 4 times
a year is preferable.
As mentioned, Armstrong Monitoring offers a number of different maintenance plans to suit your
requirements. Refer is section 5.6.
Whenever the AMC-S2e is recalibrated or replaced, the Gas Monitor should also be
recalibrated.
6.3 SENSOR REPLACEMENT
The sensor should be replaced when the sensor no longer adequately responds to test gas.
Refer to the calibration section 5.6 and follow the calibration steps to apply the test gas to the
sensor.
CAUTION
TURN OFF THE MAIN POWER SUPPLY BEFORE ATTEMPTING THE FOLLOWING PROCEDURE.
Refer to the corresponding installation section 4.2.2 AMC-S2e Sensor for proper removal and
installation of the sensor. New sensor elements may require calibration; see calibration section
5.6.2.
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