Thermo Scientific SOLA II, User Manual

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Rotary Valve Service
Two-Position Air Actuator O-ring Replacement
B-8 SOLA II User Guide Thermo Fisher Scientific
Figure B–8.
9. Take care to hold the rest of the subassembly together, and slide the
O-ring plate off the drive shaft. Refer to reassembly instructions in
“Assembly” if the subassembly does come apart).
The O-rings to be replaced are in the two end caps and the O-ring plate. The
internal end cap O-rings are easier to access if the washers and bearing are
removed. Follow the steps below.
1. Use a small screwdriver or awl to remove the old O-rings, being careful
not to scratch the metal.
2. Use a lint-free tissue to clean the O-ring grooves as completely as
possible.
3. Upon installation, coat each new O-ring with a thin layer of Dow Corning
DC-111 (or similar silicone lubricant).
Figure B–9. Locations of O-rings
Replacement