Thermo Scientific SOLA II Flare, Руководство пользователя

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Appendix B
Rotary Valve Service
Conditioning
Procedure for High
Temperature Valves
High temperature valves require conditioning when the rotor is replaced. If a
high temperature valve (WT or UWT series) is used at less than 300°C, it may
become sticky or difficult to turn. This tendency can usually be eliminated by
repeating the conditioning procedure that is initially done at the factory. With
carrier gas (oxygen-free) flowing through all the ports, rapidly heat the valve to
325°C. When this temperature is reached, cycle the valve 10 times and let it
cool to operating temperature.
Two-Position Air
Actuator O-Ring
Replacement
You will need the following to perform the tasks described in this section.
•
9/64” hex driver
•
3/8” open-end wrench
•
3/16” screwdriver
•
An awl or small jeweler’s screwdriver
•
Silicone lubricant (such as Dow Corning® DC-111)
•
Lint-free tissues and a clean shop rag
•
Standard O-Ring kit (VICI P/N OR)
•
High temperature O-Ring kit (VICI P/N ORT)
Disassembly 1. Apply air pressure to the actuator inlet nearest the valve. Then use the
open-end wrench to remove the air supply lines from the actuator.
Figure B–5.
2. Remove the valve and valve-mounting hardware from the actuator (as
shown in Figure B–5):
a. Use the 9/64" hex driver to loosen the HWSC-SC8-10B/socket-
head screw in the black anodized CR3/clamp ring on the actuator.
b. Pull off the standoff with the valve attached.
c. Use the 9/64” hex driver to remove the two HWSC-SC8-6/socket-
head screws that hold the clamp ring to the actuator.
Thermo Scientific SOLA II Flare User Manual B-7