FEBCO 860 Reduced Pressure Zone Assemblies - Small Diameter User Manual
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MAINTENANCE MANUAL SERIES 825YD, 826YD, 860, 880V
STEP 6:
Clean or replace plastic slip ring.
Clean the brass diaphragm retainer.
Lightly lubricate retainer threads
with a food grade petroleum jelly or
equal. Place slip ring into retainer.
Screw retainer with slip ring onto
main guide, securing inner dia-
phragm. Make sure the retainer is
secure.
STEP 7:
Push inner diaphragm back through
main guide until top of the dia-
phragm is flush with the top of the
retainer.
STEP 8:
Turn guide/diaphragm assem-
bly upside down and work disc
holder into guide until flush with
diaphragm.
STEP 9:
Push the disc holder through the
guide while holding the diaphragm
flush against the end of the holder.
Continue until the holder stops on
the guide. Place the assembly on
a flat surface with the diaphragm
facing up.
This will ensure that excess rubber
will roll to the inside of the main
guide when the holder assembly
strokes, otherwise the diaphragm
will crack and leak.
STEP 10:
Place flow washer on top of the
diaphragm with cross channels fac-
ing upward (Series 860 and 880V
ONLY). Line up the center holes,
then place the spring into the guide.