820-204
31
Pressure Transducer Seal
NOTE: The PTFE seal is unaffected by most solvents
and materials. Replacement of the seal is recom-
mended only when leakage has occurred.
Removal
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 8.
1.
Relieve pressure.
2.
Remove the displacement pump (20). See page
22.
3.
Using a wooden or plastic probe (such as a tooth-
pick), dislodge the packing (7) from its recess in
the manifold (101).
4.
Remove the packing and clean the manifold
recess with solvent and cloth or cotton swabs.
Inspect for nicks or scratches in the o–ring area.
Installation
1.
Lightly coat the cleaned packing recess in the
manifold with a light grease or oil.
2.
Heat the packing (7) in hot water for several
minutes.
CAUTION
Excess pressure from the probes or fingernails will
damage the packing and cause subsequent
leakage.
3.
Using fingertips or a blunt wooden or plastic probe,
install the packing into the recess. Be careful not
to cause kinks or bends in the packing during
installation.
4.
Lightly grease or oil the transducer (29) and install
the pump (20). See page 22.
101
Fig. 30
7
02997A
