10 Maintenance
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
Symptom
No output
No power to instrument
Erroneous temperature Faulty sensor cable
Erroneous temperature Field of view obstruction
Erroneous temperature Window lens
Erroneous temperature Wrong slope or emissivity
Temperature fluctuates Wrong signal processing
Marathon Series FA/FR
Probable Cause
Table 8: Troubleshooting
Solution
Check the power supply
Verify cable continuity
Remove the obstruction
Clean the lens
Correct the setting
Correct Peak/Valley Hold or Average settings
Maintenance
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