Cashco C-BPV - Manual (Page 4)

IOM-C-BPV 4
a. Remove set screw (37) from guide post
assembly (22).
b. Rotate guide post (22) CCW and remove
from plug (18).
c. Turn adapter (20) CCW and remove
pressure plate (3), diaphragm (14) and
diaphragm spacer (38). NOTE: Correct
orientation of spacer (38) has the side
with the I.D. radius towards the clamping
surface of the plug.
d. Reinstall diaphragm spacer (38) on plug
(18). Place new diaphragm (14) with
convolution side facing up, onto plug (18)
and fi t it around the diaphragm spacer
(38).
e. Lay pressure plate (3) on top of diaphragm
(14).
f. Apply Loctite 242 or equivelant to the
threads on the plug (18) and secure
adapter (20) to plug (18). Tighten to 60
in-lbs of torque.
g. Secure guide post (22) to threaded end of
plug (18) hand tight. Adjust fi nal rotation
to ensure that the set screw (37) will lock
fi rmly against one of the surface fl ats on
the plug (18).
h. Apply Loctite 242 or equivelant to threads
of set screw (37) and thread tight into
guide post.
i. Replace plug/guide post assembly of parts
back into body (1). Align tab on diaphragm
with the tab slot cut in the body fl ange lip.
j. Place spring (7) over guide post (22) and
around adapter (20).
k. Return spring button(4) with adjusting
screw assembly (5) and bearing (23) down
over guide post (22) onto spring (7). Align
one tab (ear) on spring button (4) directly
above tab slot in the body fl ange lip.
l. Align the two ribs inside the spring cham-
ber (2) with the tabs on the spring button
(4) and place the spring chamber (2) over
assembled parts directly on body (1).
m. Position the Tri-Clamp (13) around the
mating fl anges of the body (1) and the
spring chamber (2). Align the threaded
fastener with the tab slot cut in the body
fl ange lip. The clamp should be tightened
to approximately 4 to 6 ft-lbs. (Apply same
torque for Opt.-80) - See Figure 1.
n. Place load collar (19) and adjustment nut
(6) or handle (36) over guide post (22).
o. Position lever (16) over guide post (22)
and insert quick release pin (15) through
holes in lever and post.
p. See Section IV for start up and adjustment
of set point and Section VII for Cleaning.
10A. For Sizes 3/4"-1-1/2" w/lower spring
ranges:
Clamp the plug (18) at the fl ats on the plug in
a smooth jawed vice.
a. Place a wrench at the fl ats on the adapter
(20) and rotate CCW to remove adapter
(20), and guide post (22) from the plug
(18).
b. Remove pressure plate (3), diaphragm
(14) and diaphragm spacer (38). NOTE:
Correct orientation of spacer (38) has
the side with the I.D. radius towards the
clamping surface of the plug.
c. Install diaphragm spacer (38) on plug (18).
Place new diaphragm (14) with convolu-
tion side facing up, onto plug (18) and fi t
it around the diaphragm spacer (38).
d. Lay pressure plate (3) on top of diaphragm
(14).
e. Apply Loctite 242 or equivelant to the
threads of the adapter (20) and thread
adapter (and guide post (22))through parts
and into plug (18) and tighten to 60 in-lbs
of torque.
f. Replace plug/guide post assembly of parts
back into body (1). Align tab on diaphragm
with the tab slot cut in the body fl ange lip.
g. Place spring (7) over guide post (22) and
fi t it around adapter (20).
h. Return spring button(4) with adjusting
screw assembly (5) and bearing (23) down
over guide post (22) onto spring (7). Align
one tab (ear) on spring button (4) directly
above tab slot in the body fl ange lip.
i. Align the two ribs inside the spring cham-
ber (2) with the tabs on the spring button
(4) and place the spring chamber (2) over
assembled parts directly on body (1).
j. Position the Tri-Clamp (13) around the
mating fl anges of the body (1) and the
spring chamber (2) with the threaded
fastener aligned with the tab slot cut in the
body fl ange lip. Clamp should be tightened
to approximately 4 to 6 ft-lbs. (Apply same
torque for Opt.-80) - See Figure 1.
k. Place load collar (19) and adjustment nut
(6) or handle (36) over guide post (22).
l. Place lever (16) over guide post (22) and
insert quick release pin (15) through holes
in lever and post.
m. See Section IV for start up and adjustment
of set point and Section VII for Cleaning.
10B. For Sizes 1-1/2"- 3" w/lower spring range:
Clamp the lower end of the plug (18) in a
smooth jawed vice, around the outside edges
of the winged design.