Disassembly And Component Cleaning; Heater Tube Disassembly - FALEX 400 Operation And Maintenance Manual

WARNING
Fuels and solvents are flammable and may cause
irritation to the eyes or skin. Wear protective gog-
gles, gloves, and an apron; avoid contact with skin,
eyes, and clothing. Use in well ventilated areas and
keep away from heat or flame. Follow all Material
Safety Data Sheet (MSDS), Hazardous Materials
Identification System (HMIS), ISO 9000, Lab Stan-
dard Operating Procedures (SOP), and related in-
structions. Failure to comply may result in person-
nel injury or death.
The heater tube test section can reach high
tem-peratures of 100–380 °C during operation.
Always place bus bar cover over the heater tube
test area when running test to prevent contact
with the test section. When the bus bar cover is
removed, al-ways assume the heater tube test
section is hot and use caution when operating
around this area.
4.1 Unit Disassembly
1. Position a waste solvent container as needed to
catch solvent during the component cleaning.
2. The heater tube must be removed and rated.
Allow the heater tube assembly to cool for
15 minutes before continuing.
3. Lift and rotate the heater tube thermocouple
retaining clip off the thermocouple and carefully
remove the thermocouple tip from the hole on
the top of the heater tube taking care not to bend
the thermocouple.
4. Wipe down the thermocouple using a
germicidal wipe.
5. Remove the fuel-out line from the DP- fitting and
the fuel bypass lines from the DP+ fittings.
6. Remove the prefilter assembly from the cabinet
bulkhead.
7. Remove the right upper and lower bus bar screws
with the hex wrench provided
8. Loosen the left hand screws on the upper and
lower bus bars but do not remove
Section 4: Disassembly and Component Cleaning
NoTe: Lower insulator bushings may come out of the
heater tube housing while removing the heater tube or
they may stay in the heater tube housing. Take care not
to lose them.
.
[Figure 49]
.
[Figure 49]
9. Remove the test section assembly.
10. Remove the fuel-out line (J-line) from the heater
tube housing and place in the pan provided.
11. Remove the O-ring and the DP filter from the DP
filter housing using the extraction tool provided.
Discard the used O-ring and the DP filter.
12. Remove the hex nuts and the upper insulator
bushings from both sides of the heater tube
housing and place them in the pan provided.
Remove and discard the O-rings.
13. Remove the lower insulator bushings from both
sides of the heater tube and the heater tube
housing and place them in the pan provided.
14. Carefully slide the heater tube out of the housing.
15. Rinse the heater tube with Iso-Octane and allow
the solvent to evaporate. Place the heater tube
back in the original plastic container and cap until
you are ready to rate the tube.
16. Rate the tube using an approved method and
record value on screen.
Removal of the Test Section
Figure 49
30
Upper And
Lower
Bus Bar
Screws