WIKA TR21-C - Manual (Page 15)

14006814.01 05/2011 GB/D/F/E
WIKA operating instructions model TR21 15
GB
7. Maintenance and cleaning
7.1 Maintenance
The resistance thermometers described here are maintenance-free.
The electronics are completely encapsulated and incorporate no components which could
be repaired or replaced.
In general, thermowells are maintenance-free.
We recommend a visual check of the thermowell for leaks and damages at regular intervals.
Make sure that the seal is in perfect condition!
Repairs should only be carried out by the manufacturer or, following prior consultation, by
correspondingly qualified skilled personnel.
7.2 Cleaning
CAUTION!
■ Wash or clean the dismounted instrument before returning it in order to
protect personnel 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 "9.2 Return".
7. Maintenance and cleaning