Casella CEL Microdust Pro real time dust monitor - Manual (Page 50)

MicroDust Pro Aerosol Monitoring System
50 Casella CEL
9.3 User servicing
There are no user-serviceable components inside the MicroDust Pro instrument
or the sampling probe.
DO NOT open the instrument or the probe to attempt repairs. You will cancel
the warranty if you attempt to open the instrument or the probe for any reason.
If you suspect the instrument has developed a fault, contact your local
Casella CEL agent to arrange for service and repair.