WIKA 73 - Manual (Page 13)

GB
12099431.05 10/2010 GB/D/F/E
WIKA operating instructions models 73, 74, 75 13
7. Maintenance and cleaning
7.1 Maintenance
These gas actuated 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.
7.2 Cleaning
CAUTION!
■ Clean the thermometer with a moist cloth.
■ Wash or clean the disconnected thermometer 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 personnel, the environment and equipment.
Take sufficient precautionary measures.
For information on returning the instrument see chapter
"8.2 Returns".
7. Maintenance and cleaning