WIKA NS 160 Betriebsanleitung Seite 30

8. Maintenance and cleaning / 9. Dismounting, ...
8. Maintenance and cleaning
8.1 Maintenance
The instruments are maintenance-free.
EN
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.
8.2 Cleaning
CAUTION!
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9. Dismounting, return and disposal
WARNING!
Residual media in dismounted pressure gauges can result in
a risk to persons, the environment and equipment.
Take sufficient precautionary measures.
9.1 Dismounting
Only disconnect the pressure gauge once the system has been
depressurised!
When dismounting, close the vent valve (if available).
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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 environ-
ment from exposure to residual media.
WIKA operating instructions pressure gauge, model 2 per ATEX