CASELLA CEL CEL-450 Handbook page 73

Reason for returning the equipment with a detailed description
of the fault,
List of any error messages that may have been displayed.
The necessary adjustments or repairs will be carried out, and the
instrument returned as soon as possible.
A comprehensive Instrument Calibration Maintenance
Agreement (ICMA) scheme is available to extend the initial warranty
period of this instrument. At the end of the first warranty period, it is
recommended that the equipment be returned to the Service and
Verification Department at Bedford, where it will be inspected and
entered into the ICMA scheme as required. The warranty will then be
extended for the period stated on the individual schedule. Please contact
your local CASELLA CEL agent for full details of this service.
After the warranty has expired (except on approved accounts)
service work is undertaken against quotations, and all packing and transit
costs are charged extra.
CEL instrumentation and software is designed, manufactured, and serviced by:
CASELLA CEL LIMITED
CASELLA CEL INC.
CASELLA Group Companies
Parts & Warranty
and
CEL-450/490 Operators Handbook - Page 73