EN
12968065.06 06/2019 EN/DE/FR/ES
WIKA operating instructions model 55 17
WARNING!
Physical injuries and damage to property and the
environment caused by hazardous media
Upon contact with hazardous media (e.g. oxygen,
acetylene, ammable or toxic substances), harmful media
(e.g. corrosive, toxic, carcinogenic, radioactive), and
also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and the
environment.
Should a failure occur, aggressive media with extremely
high temperature and under high pressure or vacuum may
be present at the instrument.
▶
For these media, in addition to all standard regulations,
the appropriate existing codes or regulations must also
be followed.
For contact details see chapter 1 “General information” or
the back page of the operating instructions.
Faults Causes Measures
The pointer does
not move on rising
temperature
Break in the bimetal
possibly due to vibration
Remove the instrument
and replace
No readability as a
result of fogged/iced
window
Operate at temperatures
below the freezing point
Wait for the instrument
temperature and the room
temperature to equalise
No filling liquid in the
case
Replace with a
thermometer with filling
liquid
Pointer has fallen off Too strong vibration or
shock loading
Exchange the measuring
instrument with a
thermometer with filling
Filled instrument
leaking in the region
of the filling plug
Ambient temperature
lower than -40 °C
Exchange with an
instrument for ambient
temperature up to -50 °C
6. Faults
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