Thermo Scientific SOLA II Flare, User Manual

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Appendix B
Rotary Valve Service
Valve Disassembly
Caution
Do not disassemble the valve unless the system malfunction is
definitely isolated to the valve; perform all other system checks first. If
disassembly is required, make certain that the following instructions are
carefully observed.
▲
Disassembly operations must be performed in a clean, well-lighted area. Flush
all hazardous or toxic materials from the valve before starting. Please read the
entire procedure before beginning.
Figure B–1. Rotary valve disassembly
As this figure illustrates, the valve can be disassembled for cleaning and/or rotor
replacement without removing the loops and tubing from the valve or
removing the valve from the actuator or mounting bracket.
1. Unscrew the entire knurled preload assembly. Do not tamper with the
preset socket adjustment screw.
2. Engage the end of the rotor with a pencil-type magnet, available from
VICI or any electronic components supplier. Cycle the valve one time
to break the shear seal between the rotor and the valve body.
Thermo Scientific SOLA II Flare User Manual B-2