5
5. Before installing the new internal relief valve assembly module,
apply a thin coating of the supplied lubricant to both sides of one
slip ring (Item 18.1) and insert it into the top of the relief valve
cover. Install the new internal relief valve assembly module by
grasping the outside of the outer diaphragm in one hand and the
smaller diaphragm in the other hand. Then pull upward gently on
the small outer diaphragm (Item 16) so that it forms the shape
of a tulip. Hold the small diaphragm so that it maintains the tulip
shape while sliding it through the relief valve cover hole and
plastic diaphragm gasket.
6. Apply a thin coating of the supplied lubricant to both sides of the
second slip ring (Item 18.1) and place it over the top of the small
diaphragm, making sure the outer diaphragm (Item 16) is not
folded or creased under the slip ring. Push the slip ring down flat
until the adhesion from the grease holds the small diaphragm in
place. This should roll the diaphragm as shown. Thread the brass
cylinder (Item 18) into the relief valve cover and hand tighten.
CAUTION
!
Do not twist the internal parts when the cylinder is tightened.
The small diaphragm may become folded or creased if the
internal assembly is restricted while tightening the cylinder.
7. Replace the O-ring (Item 20) in the relief valve cover. Properly
seat the round bead on the large diaphragm in the counterbore
of the relief valve cover. Position the spring (Item 13) over the seat
ring in the relief valve body and hold it in place while inserting the
guide end (Item 23) of the relief valve assembly module and relief
valve cover. Position the assembly so the O-ring aligns with the
sensing hole in the body and the guide slides into the seat ring.
Replace the relief valve cover bolts and tighten to approximately
35 inch-pounds. Do not over tighten. Tighten the brass cylinder
(Item 18) in the relief valve cover to approximately 30 feet pounds
of torque. Do not over tighten.
8. After reassembly, with all test cocks closed, slowly open the inlet
ball valve and bleed air from the unit by opening and closing test
cock No. 2, No. 3, then No. 4.
NOTICE
During the bleeding process, the relief valve may discharge a
high volume of water until all test cocks have been closed and
pressure has been stabilized.
9. Check for external leaks and repair, if necessary. Slowly open the
outlet ball valve.
10. Test the assembly in accordance with locally approved methods.
11. Upon completion of successful testing, reattach the flood sensor
and activation module if in use.
