AMC AMC-1228, Инструкция по эксплуатации, Страница: 14 / 15

AMC-1228 Multidrop
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6 MAINTENANCE
This section covers topics related to the maintenance of the AMC-1228 unit. A general
description of maintenance to be carried out is followed by a verification of operation and then
details about the sensor replacement.
6.1 GENERAL
The sensor unit should be brushed or wiped clean once a year or more, of any dust or dirt which
settles on it, depending on the accumulation. The unit SHOULD NOT be submerged or placed
under conditions where water or other liquids would be able to enter the transmitter.
6.2 VERIFICATION OF OPERATION
Verification of operation and calibration should be done at least once every 6 months for safety
reasons and for highly demanding applications, monthly verification is recommended.
6.3 SENSOR REPLACEMENT
The sensor should be replaced when the green LED turns OFF while the unit is powered, or
when the sensor no longer adequately responds to test gas.
CAUTION:
Turn off the power supply before attempting the following.
When the sensor needs replacing, reorder the Part Number listed in section 2.1 SENSOR
MODULE (page 4). To replace the sensor element, remove the four screws and cover plate
from the housing. Unplug the used sensor element from its socket and discard then plug in the
replacement sensor element. Reinstall the cover plate and screws.
NOTE:
Allow 24 hours for the new sensor element to stabilize (burn-in) before recalibration
then follow instructions in the Calibration section of this manual.