Ametek Land 4750-PM, User Manual

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User Guide 6 - 2
Particulate Measurement System 4750-PM
1) Keep the air purge running throughout this procedure.
2) Switch OFF the laser (see Section 5.2.7).
3) If the sensor is mains powered, switch OFF power and isolate the sensor
power supply.
4) Referring to Fig. 6-1, undo the quick-release clamp and open the sensor
body.
5) Close the flue gas blocker (if fitted) to prevent stack gas exiting the
open port.
6) Remove any contamination from the surface of the gasket using clean
compressed air. Use wire wool or a wire brush to remove sticky residue
on the metal sensor parts only.
NOTES
It is best practice to not apply the cleaning fluid directly to the
surface you are trying to clean. Instead, place the small amount
needed onto the cleaning tool, such as a wipe and then use this
to clean the surface with a single wipe over the surface before
discarding the wipe.
Dry the surface with clean, compressed air.
7) When cleaning is complete, open the flue gas blocker (if fitted), then
close the sensor body and secure with the clamp.
8) Restore ON power, then switch ON the laser.
9) If required (e.g. after a ‘Low Flow’ alarm, purge flow failure, or after a
shutdown period), reset the optical shield (see Section 5.2.6).
Fig. 6-1 Sensor hinged open for cleaning