WIKA 232 - Maintenance and Cleaning; Dismounting and Disposal; Dismounting

Permissible ambient and operating temperatures
When mounting the pressure gauge it must be ensured that, taking into consideration the inuence of
convection and heat radiation, no deviation above or below the permissible ambient and medium temper-
atures can occur. The inuence of temperature on the display accuracy must be observed.
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 by installing a exible connec-
tion line between the measuring point and the pressure gauge 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 < 0.7 g (7 m/s
2
)
Filling level testing
The liquid lling must be checked on a regular basis.
The liquid level must not drop below 75 % of the gauge diameter.
Commissioning
During the commissioning process pressure surges must be avoided at all costs. Open the shut-o valves
slowly.
7. Maintenance and cleaning
7.1 Maintenance
The instruments are maintenance-free.
The indicator and switching function should be checked once or twice every year. The gauge must be
disconnected from the process to check with a pressure testing device.
Repairs are only to be carried out by the manufacturer or appropriately trained skilled personnel.
7.2 Cleaning
CAUTION!
 Clean the pressure gauge with a moist cloth.
 Wash or clean the dismounted pressure gauge before returning it, in order to protect
personnel and the environment from exposure to residual media.
8. Dismounting and disposal
WARNING!
Residual media in dismounted pressure gauges can result in a risk to persons, the environment
and equipment.
Take sucient precautionary measures.
8.1 Dismounting
Only disconnect the pressure gauge once the system has been depressurised!
When dismounting, close the compensating valve (if available).
8.2 Disposal
Incorrect disposal can put the environment at risk. Dispose of instrument components and packaging
materials in an environmentally compatible way and in accordance with the country-specic waste
disposal regulations.
Appendix: EU declaration of conformity