Emerson Rosemount 370XA System Reference Manual page 172

370XA Gas Chromatograph
APRIL 2014
8.
9.
CAUTION
The thermal performance of the heat pipe and the analytical performance of the GC
will be greatly reduced if the heat pipe is damaged or bent excessively.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Use the 2.5 mm hex or allen wrench to remove the two heat-
pipe cover retaining screws and then lift off the heat-pipe cover.
If the detector assembly still contains any heat-pipes, gently
twist and pull them out.
Use the 8 mm open-ended wrench to unscrew the two
detectors and then remove them.
Unscrew and remove the detector wires from the detector
connector, noting which detector wire goes into which terminal.
Use the 1 mm hex or allen wrench to remove the Teflon seals
that are in each of the detector recesses. Discard the Teflon
seals.
Use electrical contact cleaner to cleanse the sealing surfaces
and the two sample flow holes that run through the detector
assembly.
Blow down the detector assembly with clean and dry air,
nitrogen, or helium.
Insert a new Teflon seal into the bottom of each of the detector
recesses. Ensure that each seal is flat on the sealing edge at
the base of the recess.
Screw the detectors into the detector assembly. Tighten the
screws with the 8 mm open-ended wrench.
Insert the detector wires into their corresponding terminals. You
should have noted this in Step 11.
If any heat-pipes were removed from the detector assembly,
reinsert them into the detector block.
Place the heat-pipe springs over the heat pipes.
System Reference Manual
7P00370-H01
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