Figure 5-60. Check Valve Replacement - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Preventive Maintenance and Servicing
Sample System Heater Assembly Components
5-84 Omni FTIR Multi Gas CEMS Instruction Manual
4. Using the 9/64-inch hex wrench, loosen slightly but do not remove the
5 screws that mount the double coil clamp plate to the heated block.
This will allow some freedom of movement of the copper tubing
(Figure 5–60).
Figure 5–60. Check Valve Replacement
5. Using the 9/16-inch wrench and the 5/8-inch wrench, loosen the brass
nut that attaches the copper tubing to the inlet of the check valve and
disconnect that tubing.
6. Using the 9/16-inch wrench and the 5/8-inch wrench, loosen the
stainless steel nut and remove the check valve from the stainless steel
tubing, noting its orientation before doing so.
7. Using the wrenches, connect the new check valve to the stainless steel
tubing and nut, with the flow arrow pointing toward the tubing.
Tighten until snug.
8. Using the wrenches, connect the other end of the check valve to the
brass nut with copper tubing and tighten until snug. Some movement
of the copper tubing will be required to get it into the check valve.
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