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8. Maintenance and cleaning
8. Maintenance and cleaning
8.1 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
EN
check with a pressure testing device.
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.
Repairs must only be carried out by the manufacturer or appropriately qualified
skilled personnel.
8.2 Cleaning
CAUTION!
20
Clean the instrument with a moist cloth. Ensure that due to the
„
cleaning no electrostatic charge will be generated.
Wash or clean the dismounted instrument before returning it, in
„
order to protect persons and the environment from exposure to
residual media.
WIKA operating instructions pressure gauge model 4 per ATEX
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