Thermo Scientific Omni FTIR Multi Gas CEMS, Instruction Manual

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Preventive Maintenance and Servicing
Sample System Heater Assembly Components
Thermo Fisher Scientific Omni FTIR Multi Gas CEMS Instruction Manual 5-79
2. Important: before replacing the thermostat, refer to Chapter 6,
“
Troubleshooting ” for problem diagnosis. Another component fault
may have caused the thermostat to need to be reset, not replaced. Try
pressing the reset button on the center of the thermostat, which is
located on the plate at the bottom center of the heater box (
Figure 5–
59 ). Skip to step 5 and determine if the thermostat is now functioning
properly.
3. If the thermostat is bad, again remove the sample system heater
assembly cover. Use the Phillips screwdriver to remove the 2 screws that
mount the thermostat to the plate and remove it (
Figure 5–59 ).
4. Install the new thermostat by mounting it to the plate with the
mounting screws, using the Phillips screwdriver.
5. Re-install the sample system heater assembly cover by referring to
procedure “
Removing the Sample System Heater Assembly and Cover ”.
Use the following procedure to replace the eductor pump inside of the
sample system heater assembly.
Equipment Required:
Phillips screwdriver
Wrench, 5/8-inch (2), 9/16-inch, and 1/2-inch
Hex wrench, 9/64-inch
Plugs for 1/4-inch Swagelok tube fittings
Liquid leak detector (such as Snoop)
6 foot section of PTFE or PFA tubing with 1/4-inch nuts and ferrules
attached
Eductor pump
CAUTION High surface temperatures present. Allow sufficient time to
cool. ▲
1. Remove the sample system heater assembly cover per the previously
mentioned procedure “
Removing the Sample System Heater Assembly
and Cover ”, skipping steps 6 and 7 (sample system heater assembly
doesn’t need to be removed from the rack for this procedure).
Replacing the
Eductor Pump