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 5-83
8. Using the 5/8-inch wrench, tighten the bulkhead nuts on the Ejector
Air In, the FTIR In, and the FTIR Out fittings until they are snug. Use
a second 5/8inch wrench to hold the hex part of the fitting in place to
keep the fittings from trying to spin during reassembly.
9. Follow steps 1–2 in reverse order to complete the procedure.
Use the following procedure to replace the check valve 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, 3/16-inch and 9/64-inch
Wire Cutters
Tie Wraps (zip ties)
1/4-inch Swagelok union fittings
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
Check valve
CAUTION High surface temperatures present. Allow sufficient time to
cool.
▲
1. Remove the sample system heater assembly and its cover per the
previously mentioned procedure “
Removing the Sample System Heater
Assembly and Cover ”.
2. Remove the heated block assembly from the heater box per the
previously mentioned procedure, “
Removing the Heated Block
Assembly ”.
3. Turn the heated block assembly around to access the back of the
assembly.
Replacing the Check
Valve