WIKA F73.100 Mode D'emploi page 14

6. Commissioning, operation
The liquid filling must be checked on a regular basis.
The liquid level must not drop below 75 % of the gauge diameter.
Heavy shocks, oscillations and vibrations lead to imprecise values,
GB
increased wear in the transmission mechanism, 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.
When using thermowells, they must be filled with a thermal contact
medium in order to reduce the heat transfer resistance between the
outer wall of the sensor and the inner wall of the thermowell. The
working temperature of the thermal compound is -40 ... +200 °C.
14
WARNING!
Do not fill hot thermowells. There is a risk of the oil
spraying out!
WIKA operating instructions models 73, 74 (ATEX)
loosening
Make sure to loosen the
screws on the opposite side
as well!