Maintenance And Cleaning - WIKA 55 Manual De Instrucciones

6. Faults / 7. Maintenance and cleaning
Faults
Blisters in the
window (laminated
EN
safety glass)
Not possible
to screw the
instrument into the
thermowell
Dial has become
coloured
Window cracked

7. Maintenance and cleaning

For contact details see chapter 1 "General information" or
the back page of the operating instructions.
7.1 Maintenance
These bimetal thermometers are maintenance-free!
The indicator should be checked once or twice every year. To do this
the instrument must be disconnected from the process and checked
using a temperature calibrator.
Repairs must only be carried out by the manufacturer.
18
Causes
Ambient temperature
too high
Incorrect thread or stem
diameter or thermowell
stem too long
Ambient temperature
too high
If necessary, secure
thermometer via the
case
WIKA operating instructions model 55
Measures
Isolate against radiated
heat
Exchange thermometer or
thermowell
Isolate against radiated
heat
Exchange the instrument