KROHNE VA 40-VA 45 EN - Manual (Page 23)

SERVICE
6
23
VA40 - VA45
www.krohne.com 09/2013 - 4000424402 MA VA40 45 R04 en
Service
6.1 Maintenance
Within the scope of routine maintenance of the system and pipelines, the flowmeter should also
be inspected for signs of soiling, corrosive attack and mechanical wear or damage to the
measuring glass. We advise that inspections be carried out at least once per year.
For VA40 (aseptic) a strap wrench is recommended to open the flowmeter.
Devices with flange connection tighten the union nut first before installation.
CAUTION!
Pressurized pipes to be depressurized before removing the device.
Empty pipes as completely as possible.
Devices used for measurement of aggressive media: take appropriate safety precautions
regarding residual liquid in the measuring section.
Untighten the process connection to the piping only (except devices with female threaded
connections)A
lways use new gaskets when reinstalling the flowmeter in the pipeline.
Make sure the O-ring 1 is positioned correctly!
Cleaning of surfaces (e.g. viewing window): avoid electrostatic charges!
Aseptic version: when replacing gaskets, use materials conforming to FDA standards e.g. EPDM.
Before restarting an appropiate leakage test has to be performed.
1 Gasket
2 DN15 - upper float stop
3 DN15 - lower float stop
MA_VA40_45_R04_en_424402_PRT.book Page 23 Monday, September 16, 2013 8:50 AM