Maintenance
50 Rev. E2 04/2011 Marathon MR
10
Our sales representatives and customer service are always at your disposal for questions regarding
application assistance, calibration, repair, and solutions to specific problems. Please contact your local
sales representative if you need assistance. In many cases, problems can be solved over the telephone.
If you need to return equipment for servicing, calibration, or repair, please contact our Service
Department before shipping. Phone numbers are listed at the beginning of this document.
10.1 Troubleshooting Minor Problems
Field of view obstruction
Wrong slope or emissivity
Correct Peak Hold or Average settings
Table 8: Troubleshooting
10.2 Fail-Safe Operation
The Fail-Safe system is designed to alert the operator and provide a safe output in case of any system
failure. Basically, it is designed to shutdown the process in the event of a set-up error, system error, or
a failure in the sensor electronics.
The Fail-Safe circuit should never be relied on exclusively to protect critical heating
processes. Other safety devices should also be used to supplement this function!
When an error or failure does occur, the display indicates the possible failure area, and the output
circuits automatically adjust to their lowest or highest preset level. The following table shows the
values displayed on the LED display and transmitted over the 2-way interface.
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