8.
Maintenance and cleaning
8.1 Maintenance
These bimetal thermometers are maintenance-free! The indicator
should be checked once or twice every year. For this the instrument
must be disconnected from the process and checked using a
temperature calibrator.
Repairs must only be carried out by the manufacturer or authorised
organisations.
8.2 Cleaning
CAUTION!
■
Clean the thermometer with a moist cloth.
■
Wash or clean the thermometer before returning it, in
order to protect personnel and the environment from
exposure to residual media.
■
Residual media in the dismounted instrument can
result in a risk to personnel, the environment and
equipment. Take sufficient precautionary measures.
For information on returning the instrument see chapter
9.2 “Returns”.
9.
Dismounting, return and disposal
CAUTION!
Residual media in the dismounted instrument can result in
a risk to persons, the environment and equipment.
Take sufficient precautionary measures.
EN
WIKA operating instructions models 53, 54, 55 (ATEX) 17
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