SERVICE
7
101
OPTISWIRL 4200
www.krohne.com
02/2022 - 4003930810 - MA OPTISWIRL4200 R10 en
7.2 Maintaining the O-rings
Whenever either the display cover
1
or the rear cover
2
of the housing is opened and closed
again, make sure that the O-rings are well greased or being replaced if need be
(O-ring 94x2,5-NBR-70K, ISO 3601-1).
Figure 7-2: Maintaining the O-rings
1
Display cover
2
Rear cover
CAUTION!
Use proper multi-purpose grease covering the full operational temperature range to treat the
O-rings with the following properties:
•
Operational temperature range (-30...+130°C / -22...+266°F at permanent lubrication)
•
Free from silicone
•
Good adhesive capability
•
Lithium saponified
•
Water resistant
•
Compatible with material of O-ring