CEL-712 Microdust Pro Real-time Dust Monitor
55 Casella Measurement
9 Maintenance and servicing
Casella Measurement has an in-house service department that provides a
complete range of repair and calibration services for products manufactured by
Casella. Please contact the service department at the Bedford Headquarters or
your local representative for details of the full range of services available.
To return equipment for repair, pack it properly into the original packing
materials or a good equivalent and send it fully insured and pre-paid to the
following address:
Casella Measurement
(Service Department)
Regent House
Wolseley Road
Kempston
Beds MK42 7JY
United Kingdom
IMPORTANT Any instruments returned for repair should be accompanied with a
document identifying:-
A full list of the package contents.
Symptoms of the fault condition or servicing requirements.
Details of any repair or calibration work required.
For servicing outside the United Kingdom, return the instrument to your local
Casella Office or representative.
9.1 Lens contamination
In common with all items of optical equipment, the Microdust Pro instrument’s
lenses can become contaminated with particulate matter that settles on exposed
surfaces. Over time, this can reduce the instrument’s accuracy, or can make it
difficult for the instrument to give a stable zero reading.
The optical chamber and lens arrangement on the instrument probe have been
designed carefully to reduce the need for cleaning. However, to extend the
serviceable life of the instrument you should perform this task after each
measurement operation.
Rigorous purging with clean air from the purge bellow might help to clean and
dislodge any severe contamination from within the probe.
If the probe becomes heavily contaminated following regular use in high dust
concentration conditions (as identified on the status screen), lower
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