Replacing The Sample Solenoid Valve - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Preventive Maintenance and Servicing
Sample System Heater Assembly Components
Replacing the
Sample Solenoid
5-86 Omni FTIR Multi Gas CEMS Instruction Manual
Use the following procedure to replace the sample solenoid valve inside of
the sample system heater assembly.
Valve
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
Sample solenoid 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
Assembly and
2. Remove the heated block assembly from the heater box per the
previously mentioned procedure,
Assembly".
3. Turn the heated block assembly around to access the back of the
assembly.
4. Using the 9/64-inch hex wrench, loosen slightly but do not remove the
5 screws that mount the double coil clamp plate to the heated block.
This will allow some freedom of movement of the copper tubing
(Figure
Cover".
5–60).
"Removing the Sample System Heater
"Removing the Heated Block
Thermo Fisher Scientific