Maintenance; Troubleshooting Minor Problems; Fail-Safe Operation; Table 13-1: Troubleshooting - Fluke Endurance Series User Manual

13 Maintenance

Our sales representatives and customer service staff are always at your disposal for questions regarding
applications, 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.

13.1 Troubleshooting Minor Problems

Symptom
No output
Erroneous temperature
Erroneous temperature
Erroneous temperature
Erroneous temperature
Temperature fluctuates

13.2 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 shut down the process in the event of a set-up error, system error, or a failure in the
sensor electronics.
Warning
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 temperature display indicates the possible failure area and the output
circuits automatically adjust to the lowest or highest preset level. The following table shows the corresponding
values and the error code transmitted over the digital interface.

Table 13-1: Troubleshooting

Probable Cause Solution
No power to instrument Check the power supply
Faulty sensor cable Verify cable continuity
Field of view obstruction Remove the obstruction
Window lens Clean the lens
Wrong emissivity or slope Correct the setting
Wrong signal processing Correct Peak/Valley Hold or Average settings
Maintenance 13
Troubleshooting Minor Problems
115