Service manual

PN 4237242C
4.26-2
SERVICE AND REPAIR PROCEDURES
SWEEP-FLOW TUBING
Installation
1. Wind 13 ft (evenly back and forth) of PN 3202220-1 tubing onto the spool, being careful
to leave 4 in. at one end and 5 in. at the other end. The tubing must all fit in the spool
when wound.
2. Thread the exposed ends of the tubing through the face plate and place the spool in its
cavity (Figure 4.26-1).
3. Fasten the face plate to the Diluter Panel (Figure 4.26-1).
4. Connect the 4 in. tubing lead to the RBC aperture sweep-flow fitting and the 5 in. lead to
port 1 of LV4 (Figure 4.26-1).
5. Close the lower chassis.
Verification
1. Prime the sweep flow.
Note: Instrument cycles may not be sufficient in some cases. When that happens, use the
syringe to prime the sweep flow.
2. Perform an SVP (Heading 5.1), paying close attention to Plt results and histograms. If
there is a sweep-flow problem, you will see a large spike at the beginning of the
histogram.