Emerson OPM4001 Installation And Operation Manual page 45

I N S T R U C T I O N M A N U A L R E V 4 . 2
Yearly:
Clear stack or off stack zero
All quarterly checks
Remove transceiver and retro, clean air plenum
Replace any worn hoses and gaskets
Clean inner optics if necessary
Check all system operations
General
Corrective and preventive maintenance schedules should be adjusted according to site specific conditions to ensure the maximum
availability of accurate measurement data. Routine checks should be implemented to:
Observe and correct the operation of the air-purge system giving particular attention to keeping the optical path within the
mounting flanges clear of dirt build-up.
Observe and correct the operation of peripheral accessory equipment such as recorders, computers, etc.
Observe and correct the stack zero measurement whenever a clear stack condition exists. Care should be exercised to ensure that
both transmittance and opacity measurements are at their prescribed values.
Verify that instrument operating manuals are available and that maintenance logs are properly maintained and reviewed.
Every 3-5 Years:
It is recommends periodical, depending on the severity of the sensor locations 3-5 years between overhaul of our opacity system to
keep them working at their optimal level. Overhauls become necessary do to the fact that over time dust, out gassing of electronic
parts, removing protective covers, etc., manifest itself as overall optics degradation causing more frequent adjustments and poor
performance of the opacity monitor.
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