WIKA intelliTHERM TGT73.100 Mode D'emploi page 18

5. Commissioning, operation
The liquid filling must be checked on a regular basis.
The liquid level must not drop below 75 % of the instrument diameter.
Heavy shocks, oscillations and vibrations lead to imprecise values,
EN
increased wear in the movement, and fractures on welded or soldered
joints.
When mounting a gas-actuated thermometer that can be rotated and
swivelled, the specific instructions must be followed. In order to set the
indicator to the desired position, the following steps must be taken:
1. The lock nut or union nut must be loosened at the process
connection.
2. The hexagon bolts and slotted screws at the swivel joint must be
loosened.
3. Position the indicator as required, tighten the hexagon bolts and
slotted screws, and finally tighten the lock nut or union nut firmly.
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loosen
Make sure the screws on the
opposite side are loosened
as well!
WIKA operating instructions model TGT73 (Ex)