Replacing The Pressure Gauges - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Replacing the
Pressure Gauges
Thermo Fisher Scientific
3. Note the pressure on the house air regulator located on the right side of
the system, so that it can be reset later. Pull up on the knob to unlock it
and turn the pressure down to zero
4. At the rear of the pneumatic panel, use the 9/16-inch wrench to loosen
the nut and disconnect the short Teflon line on the pressure reducer
that goes to the pressure gauge. Loosen the nut and disconnect the inlet
and outlet lines on the pressure reducer. Note or mark their locations to
facilitate re-connection
5. At the front of the pneumatic panel, use the adjustable wrench to
loosen the panel nut of the pressure reducer. Completely unthread the
nut and remove the pressure reducer from the panel.
6. Remove the nuts and ferrules from the 3 fittings on the new pressure
reducer and discard them.
7. Insert the new pressure reducer into the panel from the rear and thread
on the panel nut. Position the pressure reducer in the same orientation
as the other pressure reducer, and then tighten the panel nut using the
adjustable wrench until snug.
8. Re-connect the Teflon lines to their proper locations, then tighten the
nuts using the 9/16-inch wrench until snug
9. Set the house air regulator back to the pressure noted earlier, then push
the knob down to lock it. Set the new pressure reducer on the
pneumatic panel to the pressure noted earlier.
10. Re-install the left side panel to complete the procedure.
Use the following procedure to replace the pressure gauges on the
pneumatic panel. The procedure is the same for either pressure gauge.
Equipment Required:
Wrench, 9/16-inch
Pressure gauge
1. Remove the left side panel per procedure
Panel" for better accessibility.
Preventive Maintenance and Servicing
(Figure 5–18).
(Figure 5–62).
(Figure
"Removing the Left Side
Omni FTIR Multi Gas CEMS Instruction Manual
Pneumatic Panel Components
5–62).
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