Maintenance And Cleaning - WIKA DiwiTherm TR75 Betriebsanleitung

6. Commissioning, operation / 7. Maintenance and cleaning
6.2 Tapered threads (NPT)
Connections with tapered threads (NPT) are self-sealing and normally must not be sealed. It
should be checked whether it may be necessary to seal them additionally with Teflon tape or
hemp. The threads must be lubricated with a suitable lubricant before fitting.
Tighten the threads by hand when carrying out the final assembly on the plant. This will
correspond to the delivery status of the premounted components. The final tightening and
sealing must be made with a spanner (1.5 to 3 rotations).

7. Maintenance and cleaning

7.1 Maintenance
The DiwiTherm ® thermometer is 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.
DiwiTherm® Model TR75-1: battery powered (min. 10 years service life)
The battery is not replaceable!
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
CAUTION!
Before cleaning, correctly disconnect the instrument from the pressure supply,
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switch it off and disconnect it from the mains.
Clean the instrument with a moist cloth (soap water).
■
Electrical connections must not come into contact with moisture.
■
Wash or clean the dismounted instrument before returning it, in order to
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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".
WIKA operating instructions DiwiTherm , model TR75
®
GB
13