Maintenance And Cleaning - WIKA 7 Betriebsanleitung

6. Commissioning, operation / 7. Maintenance and cleaning
Requirements for the installation point
If the line to the measuring instrument is not adequately stable, an instrument
mounting bracket should be used for fastening. If vibrations cannot be avoided by
means of suitable installation, filled instruments should be used. The instruments
EN
should be protected against coarse dirt and wide fluctuations in ambient
temperature.
Permissible vibration load at the installation site
The instruments should always be installed in locations free from vibration.
If necessary, it is possible to isolate the instrument from the mounting point,
e.g. by installing a flexible connection line between the measuring point and the
instrument and mounting the instrument on a suitable bracket.
If this is not possible, the following limit values must not be exceeded:
Frequency range < 150 Hz
Acceleration < 0.5 g (5 m/s )
2
Level check
For filled instruments, the level must be checked on a regular basis.
The liquid level must not drop below 75 % of the instrument diameter.
Commissioning
During the commissioning process pressure surges must be avoided at all costs.
Open the shut-off valves slowly.

7. Maintenance and cleaning

7.1 Maintenance
The instruments are maintenance-free. The indicator should be checked once or
twice every year. For this the instrument must be disconnected from the process
to check with a pressure testing device.
Repairs must only be carried out by the manufacturer or appropriately qualified
skilled personnel.
14 WIKA operating instructions pressure gauge model 7 per ATEX