Maintenance And Cleaning; Faults - WIKA TR31-3 Operating Instructions Manual

10. Maintenance and cleaning / 11. Faults

10. Maintenance and cleaning

10.1 Maintenance
The resistance thermometers described here require absolutely no
EN
maintenance and contain no components which could be repaired or
replaced.
10.2 Cleaning

11. Faults

Faults
No signal/line break
Erroneous measured
values
30
CAUTION!
Before cleaning the instrument, disconnect the electrical
■
connections.
Clean the instrument with a moist cloth.
■
Electrical connections must not come into contact with
■
moisture.
Wash or clean the dismounted instrument before returning
■
it, in order to protect persons and the environment from
exposure to residual media.
Residual media in dismounted instruments can result in
■
a risk to persons, the environment and equipment. Take
sufficient precautionary measures.
For information on returning the instrument see chapter 12.2
"Return".
Causes
Mechanical load too high
or overtemperature
Sensor drift caused by
overtemperature
Sensor drift caused by
chemical attack
WIKA operating instructions models TR31-3, TR31-K
Measures
Replace the sensor with a
suitable version
Replace the sensor with a
suitable version
Analyse the medium