Replacing The Flow Meters - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Preventive Maintenance and Servicing
Pneumatic Panel Components
Replacing the Flow
5-94 Omni FTIR Multi Gas CEMS Instruction Manual
5. Using the Phillips screwdriver, loosen and remove the 4 screws that
mount the solenoid valve to the valve plate and remove it
63).
6. Using the Phillips screwdriver, remove the screw and connector with
cable assembly from the end of the solenoid valve, to be used later.
7. Using the 3/4-inch wrench, remove the 2 fittings and their o-rings
from the solenoid valve. Install the fittings and o-rings on the new
solenoid valve and tighten until snug
8. Using the small Phillips screwdriver, remove the screw and connector
from the new solenoid valve and discard them. Install the original
connector with cable assembly on the new valve, install the screw and
tighten until snug. Note that one tab is wider than the others so that it
can only be installed one way.
9. Install the new solenoid valve onto the valve plate using the 4 screws
removed previously and tighten until snug. Make sure that the solenoid
valve is in the same orientation as the other valves
10. Re-install the valve bank assembly onto the flow meter panel using the
2 nuts removed previously. Using the 11/32-inch nut driver, tighten
until snug.
11. Re-install the tubing (or fittings) to their original positions on the
solenoid valve, and then tighten until snug using the 9/16-inch wrench.
12. Turn the gas cylinder back on or reset the house air regulator back to
the pressure noted earlier, then push the knob down to lock it.
13. Re-install the left side panel to complete the procedure.
Use the following procedure to replace the flow meter/regulators on the
pneumatic panel. The procedure is the same to replace any of the 6 flow
Meters
meters except where otherwise noted. The 4 center flow meters have the
same part number, but the 2 end flow meters have a different part number.
Be sure to order the correct flow meter.
Equipment Required:
Phillips screwdriver
(Figure 5–
(Figure 5–62).
(Figure 5–62).
Thermo Fisher Scientific