4
IOM-C-CS
Figure 1
: Clamp Arrangement.
20. Position spring (7) on to hub of pressure
plate (28). Place adjusting screw (25.6)
- with spring button (4) - over end of guide
post (27) and into spring (7) cav i ty.
NOTE:
Apply a small amount of Emhart Bostik White
Food Grade “Never-Seez” or equiv a lent to
threads of ad just ing screw (25.6)
Do Not
rotate adjusting screw (25.6) or spring
button (4).
21. Install new guide seals (25.9) in adjusting
screw cap (25.7).
NOTE:
There are two
sizes of u-cup seals - install the seal with
the bigger diameter spring first, open face
into the cap recess. Install the second u-cap
seal, open face exposed to face of adjusting
screw (25.6).
Slide adjusting screw cap
(25.7) over end of guide post (27). Align
dowel pin (25.8) with hole in adjusting screw
(25.6) and press together by hand.
NOTE:
Top of dowel pin (25.8) should be flush with
top surface of adjusting screw cap (25.7).
22. Install new bearing (26) on top of upper
guide assembly (25).
23. Align slot guides inside spring chamber
(2) with spring button (4) tabs (ears) and
position on to body (1). Align with match
marks of step 6. previous.
24. Place handle (6) over end of guide post
(27) coming to rest on adjusting screw cap
(25.7). Insert hitch pin (21) into hole through
end of guide post (27). Apply Food Grade
threadlocker to threads of set screw (30)
install into top of guide post (27) and tighten
securely.
25. Reposition clamps (13A) around body (1)
and spring chamber (2) flanges. Insert clamp
bolts (13C), washers (13D) and tighten
clamp nuts (13B) in alternating pattern.
NOTE:
Gap be tween clamp (13A) halves
should be equal in size
. Gap and torque
re quire ments are as follows:
11a.
For Model C-CS :
Remove diaphragm (17), O-ring (16),
diaphragm gas ket (15) and body (1).
11b.
For Model C-CS with Opt.-11:
Remove diaphragm (17), diaphragm gaskets
(15), O-ring (18), seal (19), push er plate (20),
O-ring (16) and body (1).
12. Inspect plug (14) and seating surface of body
(1) for excessive wear. For composition
seat -install new soft seat (14.2) in tail piece
(14.3).
13. Inspect gasket (15) and O-ring (16) retaining
surfaces of body (1) and spring chamber (2).
14. Clean all parts in accordance with Own er’s
cleaning procedures. Secure plug (14) or
tail piece (14.3) back into vise. Set body
(1) over top of plug. Ensure that the plug
or seat of tail piece is in contact with the
seating area of the body (1) and the face of
the inlet flange of the body (1) is resting on
the vise.
For Composition Seat:
Place a small
amount of medium strength, Food Grade
threadlocker on threaded end of stem (14.1).
Insert threaded end of stem into tail piece.
15. Place new diaphragm gasket (15) on body
(1) flange.
16. Install O-ring (16) on plug (14). For Opt.-11
re po si tion push er plate (20) on threaded
end of plug and install O-ring (18) and seal
(19). Refer to Figure 4.
17. Place diaphragm (17) over threaded end of
plug (14).
NOTE:
The word ‘TOP’ is etched
on one side of the diaphragm and should be
visible when looking down on the diaphragm.
18. Place a small amount of medium strength,
Food Grade threadlocker on threaded end
of plug (14). Reassemble pressure plate
assembly (27,28 and 29) to plug (14). Refer
to
NOTE:
in Step 10. Grasp the parts and
rotate pres sure plate assembly (27,28,29)
CW until wrench tight (met al-to-metal
con tact); Torque values not to ex ceed the
following:
19. Center/align the above pressure plate/
diaphragm assembly on the di a phragm (17)
flange sur face in the body (1) cavity.
Gap Torque
Equal Distance 225-250 in-lbs (25-28 N-m)
Body Size
in (DN)
Torque
in-lbs (N-m)
3/4"-1 1/2" (20-40)
100 (11)
2" - 3" (50-80)
270 (31)
