KROHNE OPTIFLUX 2000-4000 IECEx EN - Manual (Page 12)

4
MAINTENANCE AND SERVICE
12
OPTIFLUX
www.krohne.com 06/2010 - 7312092100 - AD OPTIFLUX IECEx R01 en
4.1 Maintenance and service
The OPTIFLUX flowmeters are maintenance free with respect to the flow metering properties.
Within the scope of periodic inspections required for electrical equipment installed in hazardous
areas it is recommended to check the flow meter and converter housing for signs of the
corrosion. This is especially important for the flameproof Ex d flowmeter or coil housing of sizes
DN25...150.
Specific notes for Ex d flowmeters, sizes DN25...150:
• In case of replacement of one (or more) of the four M6 hexagon socket head cap screws which
connect the IFC 100 converter housing with the OPTIFLUX 2000 / 4000 flowmeter, equivalent
types must be used, that are M6x16 hexagon socket head cap screws to ISO 4762, steel
quality A2-70 or A4-70.
• If needed, contact please the manufacturer for information on the dimensions of the
falmeproof joints.