15
11484498.03 07/2017 EN/DE/FR/ES
WIKA operating instructions bimetal thermometers for HVAC
EN
6. Faults
6. Faults
Personnel:
Skilled personnel
Tools:
Open-ended spanner, slot-type screwdriver
CAUTION!
Physical injuries and damage to property and the environment
If faults cannot be eliminated by means of the listed measures, the instrument
must be taken out of operation immediately.
▶
Ensure that there is no longer any pressure present and protect against
being put into operation accidentally.
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions given in chapter 8.2
“Return”.
WARNING!
Physical injuries and damage to property and the environment caused
by hazardous media
Upon contact with hazardous media, harmful media (e.g. corrosive, toxic,
carcinogenic), and also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and the environment.
Aggressive media with extremely high temperatures 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
False value is
displayed
There is a fault
Replace the measuring instrument
There is a zero point offset
Carry out a indication correction
(see chapter 5.5 “Indication correction”)
Heat dissipation error
Check the instrument selection and
installation situation (see chapter 5.3 “Heat
dissipation error”)
Medium is
escaping
(leakage)
Material of the thermowell is
unsuitable
Use a suitable thermowell and replace
measuring instrument.
The sealing of the thermowell
is defective
Replace the sealing
Impermissibly high process
pressure
Shut the plant down, adjust the process
pressure, if needed, replace the thermowell
and measuring instrument (see chapter 8.1
“Dismounting”)
