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SMC sierra monitor corporation Sentry Instruction Manual - Version 6
MAINTENANCE
Page: 53
6. MAINTENANCE
6.1 MAINTENANCE REQUIREMENTS
The following are the manufacturer’s recommendations
for periodic maintenance of the Sentry system:
1 CALIBRATION: All sensors should be calibrated at a
minimum of every 90 days.
NOTE
FMRC approved combustible gas sensors are required to
be calibrated every 90 days.
2 BATTERY REPLACEMENT: The lithium battery for
memory retention should be replaced every two
years. (See Service)
3 DUST AND DIRT CONTROL: When calibration is
performed the controller and the modules should be
checked visually to determine if dust or dirt build up
needs to be removed. This cleaning should be done
with dry instruments such as compressed air, cloth
wipes or whisk broom.
4 WIRING OR CABLE CONDITIONS: Any wiring or
cables which are not conduited should be checked
once a year for damage to insulation or corrosion of
splice or terminal points.
5 LUBRICATION: Lubricate metal to metal parts
(module lid) periodically.
6 INSPECTION: Inspect modules, periodically, for
moisture or water accumulation.