Cashco C-PRV - Manual (Page 3)

IOM-C-PRV 3
5. Loosen thumbclamp screw (13) and remove.
a.
For Opt-80: 2 piece clamp (13A): Loosen
and remove clamp nuts (13B), washers (13D),
bolts (13C) and clamps (13A). See Figure 1.
6. Place matchmarks between body (1) and
spring chamber(2) to assist in fi nal orientation
when reassembled.
7. Lift spring chamber (2) vertically up and off
guide post (18) and body (1) and set aside.
NOTE alignment of spring button (4) tab
(ears) with slot guides inside spring cham-
ber (2).
8. Remove bearing seal (22). Lift up to remove
adjusting screw assembly (5), spring button
(4) and spring (7) off guide post (18).
9. Grasp cap (5.1) of adjusting screw assembly
with hand and lift up to separate cap (5.1) from
(5.3) to reveal and remove two u-cup seals
(5.4). Do Not remove dowel pin (5.2).
10. Install two new u-cup seals (5.4) into the ad-
justing screw cap (5.1). Insert the fi rst u-cup
with the open side with the spring showing into
the hole in the cap. Ensure that the u-cup is
pressed all the way in. Look into the hole to
confi rm that the white seal material is show-
ing and not the spring material. Then press
second u-cup seal with white seal material
side in fi rst into the hole all the way in next to
the fi rst u-cup. (Spring side of u-cup should
be visible.
11. Slide adjusting screw cap (5.1) with new u-cup
seals (5.4) and adjusting screw (5.3) together,
use the dowel pin (5.2) for alignment. NOTE;
Top end of pin (5.2) should be fl ush with top
surface of adjusting screw cap (5.1). Place
new seal (22) on adjusting screw cap (5.1).
Set parts aside for fi nal assembly later.
12. Remove set screw (19) rotate CCW. Rotate
guidepost (18) CCW and remove.
For 1" Investment Cast Body:
a. Remove spacer (21).
b. Remove set screw (24) CCW.
13. Place a wrench on fl ats of the adapter nut(20)
and rotate CCW to remove.
14. Remove pressure plate (3), diaphragm (16)
and diaphragm spacer (26). NOTE: Correct
orientation of spacer (26) has the side with
the I.D. radius facing towards the clamping
surface of the plug (17).
15. Inspect seating surface of plug. Replace plug
if surface is worn or damaged.
16. Clean parts in accordance with owner's speci-
fi cations.
17. Install diaphragm spacer (26) on plug (17).
Place new diaphragm (16) with convolution
side facing up, onto plug (17) and fi t it around
the diaphragm spacer (26). Align tab on O.D.
of diaphragm (16) with the tab slot cut in the
body fl ange lip.
18. Lay pressure plate (3) on top of diaphragm
(16).
19. Apply Emhart Bostic White Food Grade "Never
Seeze" or equivelant to threaded end of plug
(17). Thread adapter nut (20) onto plug (17)
and tighten to 60 in-lbs of torque.
For 1" Investment Cast Body:
a. Install spacer (21).
b. Apply Loctite 242 or equivelant to set
screw (24). Thread set screw into adapter
nut (20) secure tight against plug (17).
c. Apply Emhart Bostic White Food Grade
"Never Seeze" or equivelant to the exter-
nal threads of the adapter (20) and thread
guide post (18) securely to the adapter.
20. Thread guide post (18) onto end of plug (17),
thighten fi rmly into place.
21. Apply Loctite 242 or equivelant to set screw
(19). Thread set screw tight into guide post
(18).
22. Position spring (7) over guide post (18) - rest-
ing fl at on pressure plate (3).
23. Place spring button(4) with adjusting screw
assembly (5) and bearing (22) down over guide
post (18) into spring (7) cavity. Align one tab
(ear) on spring button (4) directly above tab
slot cut into the body fl ange lip.
CAUTION
Owner’s cleaning solution must be com pat i ble with
regulator trim materials.
CAUTION
Do not apply spring load or operate regulator with
hitch pin (15) removed from top of guide post (18).
Pre ma ture di a phragm failure will re sult.