EN
WIKA operating instructions models TGS55, TGS73 with 831 (Ex)
14327097.02 09/2019 EN/DE/FR/ES
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7. Maintenance and cleaning
7. Maintenance and cleaning
Personnel:
Skilled personnel or service personnel
Tools
: Suitable spanner
For contact details see chapter 1 “General information” or the
back page of the operating instructions.
7.1 Maintenance
These 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.
Testing of filled instruments
For filled instruments, the level must be checked once or twice every
year. The liquid level must not drop below 75 % of the instrument
diameter.
DANGER!
Danger to life due to impermissible filling/refilling of the
instrument with loss of explosion protection
The filling/refilling of instruments by non-authorised personnel
leads to a loss of the explosion protection and can lead to
damage to the instrument.
▶
Repair of the instruments may only be carried out by
authorised bodies
▶
If a return is needed, please follow the instructions given in
chapter 8.2 “Return”.
Repairs must only be carried out by the manufacturer.
