Maintenance And Cleaning - WIKA DiwiTherm TR75 Betriebsanleitung

6. Commissioning, operation / 7. Maintenance and cleaning
WIKA Designation
Order no.
per DIN 7603 Form C 14 x 18 x 2 -CuFA
11349981
11349990 per DIN 7603 Form C 18 x 22 x 2 -CuFA
11350008 per DIN 7603 Form C 21 x 26 x 2 -CuFA
11350016 per DIN 7603 Form C 27 x 32 x 2.5 -CuFA
11367416 per DIN 7603 Form C 20 x 24 x 2 -CuFA
1248278 per DIN 7603 D21.2 x D25.9 x 1.5 -Al
3153134 per DIN 7603 Form C D14.2 x D17.9 x 2 -StFA
3361485 per DIN 7603 Form C D33.3 x D38.9 x 2.5 -StFA
11355352 D15 x D21 x 3 -NP-Univ
1605933 D15 x D21 x 1 -NP-Univ
Legend:
CuFA = Copper, max. 45 HB
Al = Aluminium Al99; F11, 32 to 45 HB
StFA = Soft iron, 80 to 95 HB
6.2 Tapered threads (NPT)
It should be checked whether it may be necessary to seal them additionally with PTFE 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.
To do this, the instrument must be disconnected from the process and checked using a
temperature calibrator.
DiwiTherm model TR75: battery powered (at least 10 years service life)
®
The battery is not replaceable!
Repairs must only be carried out by the manufacturer.
WIKA operating instructions DiwiTherm
a
; filled with asbestos-free sealing material
b
a
; filled with asbestos-free sealing material
, model TR75
®
Suitable for threads
G ¼, M14 x 1.5
M18 x 1.5, G ⅜
G ½, M20 x 1.5
G ¾, M27 x 2
M20 x 1.5
G ½, M20 x 1.5
G ¼, M14 x 1.5
G 1
M24 x 1.5
M24 x 1.5
EN
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