Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual page 173

Thermo Fisher Scientific
17. Using the 9/64-inch hex wrench, re-install the top and bottom valve
clamp blocks into their original positions, tightening the mounting
screws until snug.
18. Using the wrenches, tighten until snug the 2 fittings on the back that
were left loose in the previous steps. These two fitting connections
should now be leak tested.
19. Leak test the other side of the check valve by connecting the 1/4-inch
Swagelok union fitting to the air line and connecting that to the
Flowback line using the wrenches. Install the 1/4-inch Swagelok plug
onto the other 1/4-inch Swagelok union fitting and install that onto
the Sample In line. Turn the air regulator up to 25 PSI. Using the
liquid leak detector, wet the connection between the check valve and
the copper tubing to see if there are leaks, which will produce air
bubbles. If any are present, tighten the fitting until the leaking stops.
Turn the air regulator back down to zero PSI. Remove the 1/4-inch
Swagelok plug and 1/4-inch Swagelok union fitting from the Sample In
line.
20. To leak test the other side of the union fitting that connects to the
copper tubing, disconnect the air line with the 1/4-inch Swagelok
union fitting from the Flowback line using the wrenches. Connect the
air line with the union fitting to the Instrument Zero line, and then
install the 1/4-inch Swagelok plug onto the FTIR In fitting. Turn the
air regulator up to 25 PSI. Using the liquid leak detector, wet the
connection between the union fitting and the copper tubing to see if
there are leaks, which will produce air bubbles. If any are present,
tighten the fitting until the leaking stops. Turn the air regulator back
down to zero PSI. Remove the 1/4-inch Swagelok plug from the FTIR
In fitting, and then disconnect the air line with the union fitting from
the Instrument Zero line. Remove the union fitting from the end of the
air line. Disconnect the air line from the tee on the side of the rack. Re-
connect the inlet of the purge gas generator to its original position.
This completes the leak test.
21. Using the 9/64-inch hex wrench, tighten the 5 mounting screws that
were loosened that attach the double coil clamp plate to the heated
block, until snug.
22. Follow the procedures referenced in step 2,
Block Assembly", and in step 1,
Assembly and Cover", in reverse order to complete the procedure.
Preventive Maintenance and Servicing
Sample System Heater Assembly Components
"Removing the Heated
"Removing the Sample System Heater
Omni FTIR Multi Gas CEMS Instruction Manual 5-89