WIKA TW61 - Manual (Page 14)

11593963.03 03/2014 GB/D/F/E
14 WIKA operating instructions thermowell, model TW61
GB
8. Faults
Faults Causes Measures
Not possible
to insert the
temperature sensor
into the thermowell
Foreign bodies in the thermowell Remove foreign bodies
Damaged or contaminated fastening thread on
thermowell or temperature sensor
Clean the threads
Damaged fastening thread on thermowell or
temperature sensor
Return the thermowell
(see chapter 9.2 “Returns”)
Thermowell or sensor has been bent or
damaged during installation
Return for repair
Escape of process
medium
Where there is an escape of process medium
at the process connection, errors in mounting or
faulty seals can be the cause.
Check the seal and also
check the tightening torques
Should process media escape at the interface
between the thermowell and the temperature
sensor or at the temperature sensor itself,
safe operation of the plant can no longer be
guaranteed
Remove the thermowell from
operation and contact WIKA
CAUTION!
If faults cannot be eliminated by means of the measures listed above, shut down the
instrument immediately, and ensure that pressure and/or signal are no longer present,
and secure the instrument from being put back into operation inadvertently.
In this case, contact the manufacturer.
If a return is needed, follow the instructions given in chapter 9.2 “Return”.
9. Dismounting, return and disposal
WARNING!
Residual media in the dismounted thermowell can result in a risk to persons, the
environment and equipment. Sufficient precautionary measures must be taken.
9.1 Dismounting
WARNING!
Risk of burns!
Let the instrument cool down sufficiently before dismounting! During dismounting
there is a risk of dangerously hot pressure media escaping.
Only disconnect thermowells once the system has been depressurised!
8. Faults / 9. Dismounting, return and disposal