WIKA 702.03.100 - Manual (Page 16)

GB
WIKA operating instructions differential pressure gauge, model 702.03.100 16
2367781.03 06/2013 GB/D/F/E
2123649.0X
7. Options and accessories / 8. Maintenance
7.2 Panel mounting flange
Panel
Cutout
8. Maintenance
The instruments are maintenance-free.
The indicator and switching function 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.
■ Sequence of operations to dismount the measuring instrument with a
running process
1. Open the pressure compensating valve
2. Close the shut-off valve for the ⊕ and ⊖ media chamber
3. Open the vent valve