Wika TC10-L Instrukcja Użytkownika Strona 15

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WIKA operating instructions models TR10-L, TC10-L (Ex d)
3370964.05 04/2014 GB/D/F/E
15
GB
6.3 Tightening torques
Connection head, selectable (example)
Tightening torques for connection to thermowell
Tightening torques for connection to neck tube
Thread Tightening torques in Nm
R 1/2
1)
50 ... 60
1) only for versions with “nipple-union-nipple” neck tube
Thread
Tightening torques in Nm
1/2 NPT 35
3/4 NPT 40
G 1/2 B 35
G 3/4 B 40
M14 x 1.5 25 ... 30
M18 x 1.5 35
M20 x 1.5 35 ... 40
M27 x 2 40 ... 45
Only ever screw in, or unscrew, the instrument via the spanner-ats and to the prescribed
torque using an appropriate tool.
The correct torque depends on the dimensions of the connection thread and the gasket
used (form/material).
Screwing or unscrewing the connection head is not permitted.
When screwing in the instrument, please observe that the threads are not skewed.
6. Commissioning, operation
6.4 Locking screw
Always tighten the locking screw to prevent unintended opening of
the head with ameproof enclosure.
Before opening the head, always loosen the locking screw
suciently.
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