Service manual

PN 4237242C
4.17-2
SERVICE AND REPAIR PROCEDURES
PROBE AND PROBE WIPE
4. If the probe wipe housing is the part to be replaced, disconnect the tubing and then
proceed to Installation, step 5.
5. Remove the spring roller near the top of the traverse housing by removing the single
Phillips-head retaining screw (Figure 4.17-1).
6. Remove the aspirate probe from the traverse rack (Figure 4.17-1):
a. Move the aspirate probe until the top of the probe is visible through the window
opened by removing the spring roller in step 5 above.
b. With needle-nose pliers or a flat-blade screwdriver, pry the aspirate probe down
from the traverse rack until it is clear of the rack. The aspirate probe is held in place
using a rubber O-ring to create a pressure fit.
7. Pull the aspirate probe down until the aspirate tubing has emerged from the bottom of
the traverse housing (Figure 4.17-1).
8. Remove the aspirate tubing from the aspirate probe, being careful not to misplace the
stabilizing spring (Figure 4.17-1).
Installation
1. Ensure that the replacement aspirate probe has an O-ring. If it does not, use a new
O-ring; do not use the old one. It is a good idea to replace the O-ring any time the
aspirate probe has been removed. The O-ring deteriorates after several probe removals
and replacements, making it incapable of holding the probe in place.
2. Install the aspirate tubing onto the probe (Figure 4.17-1):
a. Remember to first put the stabilizing spring over the aspirate tubing.
b. Make sure there is no grease or contamination on the aspirate probe fitting.
c. Push the aspirate tubing onto the aspirate probe.
3. Lightly lubricate the O-ring using a silicon grease.
4. Install the aspirate probe into the traverse rack (Figure 4.17-1):
a. Move the traverse rack and aspirate probe until they are visible through the traverse
housing window.
b. Hold the rack and using needle-nose pliers or a flat-blade screwdriver through the
window, force the aspirate probe up into the rack.
IMPORTANT
Risk of damage to aspirate tubing. Pre-stretching the aspirate tubing could cause tears or an
improper fit that will compromise the instrument’s performance. The aspirate tubing fits without being
stretched. Do not pre-stretch the aspirate tubing.