Cashco C-BPV - Manual (Page 3)

IOM-C-BPV 3
2. Ensure that the lever (16) is in standard
horizontal position. Relax range spring (7)
by turning adjustment nut (6) or han dle (36)
CCW until rotation stops.
3a. For range springs 2 - 75 psig - pull ring on
pin (15) to remove pin, lever (16), nut (6) or
handle (36) and collar (19).
3b. For range spring 60 - 125 psig - pull ring on
pin (15) to remove pin, cam (16), slide base
(24) assembly, bearing plate (29) and collar
assembly (28).
a. Use a small round punch to tap and remove
spring pin (32). Note the location of the eye
nut (27). Count the number of revolutions
(CCW) to remove eye nut (27) from top of
guide post assembly (22). Record the count
here.
No. of Revolutions to
remove eye nut.
______
4. Loosen clamp (13) and remove.
a.
For Opt. -80 2-piece clamp design See
Fig 1: Loosen and remove clamp nuts (13B),
washers (13D), bolts (13C) and clamps (13A).
5. Lift spring chamber (2) up off body (1) and set
aside. Remove bearing seal (23). Lift up to
remove adjusting screw assembly (5), spring
button (4) and spring (7) off guide post (22).
6. Grasp cap (5.1) of adjusting screw assembly
with hand and lift up to separate and remove
cap (5.1) and two u-cup seals (5.4). Do Not
remove dowel pin (5.2).
7. 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.
8. 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 (23) on adjusting screw cap (5.1).
Set parts aside.
9. Grasp the guide post (22) and lift upwards to
remove diaphragm (14) and plug (18) sub-
assembly.
SECTION VI
AUTION
VI. MAINTENANCE
A. General:
1. Unit’s lock-open feature allows this regulator
to be cleaned in-line; see Section VII.
2. Maintenance procedures hereinafter are
based upon removal of regulator unit from
the pipeline where installed.
3. Owner should refer to owner’s procedures
for re mov al, handling and disposal of non-
reusable parts.
4. After dis-assembly, inspect, replace and clean
parts in accordance to owner's specifi cations.
NOTE: For those fl uids which could create a
potential hazard to personnel working on this unit,
owner must provide an OSHA approved MSDS
(Material Safety Data Sheet), and a signed state-
ment at test ing to the fact that the unit has been
fl ushed out, for a specifi c period of time, using an
OSHA acceptable neu tral iz ing agent. The name
of the agent, man u fac tur er’s name and total con-
cen tra tion level must also be included for both the
ser vice medium as well as the neutralizing agent.
Returns WILL NOT BE AC CEPT ED by Cash co,
Inc. without an MSDS form at tached to the outside
of ship ping carton.
4. Refer to Figures 3 and 4 for item numbers ().
B. Trim Replacement:
1. Securely install the body (1) in a vise with the
spring chamber (2) directed upwards. Ensure
that the body (1) is not held in the vise by the
edge of the end connection fl ange.
WARNING
SYSTEM UNDER PRESSURE. Prior to performing any
maintenance, isolate the regulator from the system and
relieve all pressure. Failure to do so could result in per-
sonal injury.
WARNING
SPRING UNDER COMPRESSION. Prior to re mov-
ing the clamp (13), relieve spring com pres sion by
rotating the adjustment nut (6) or handle (36) CCW
when viewed from above. Fail ure to do so may re-
sult in fl ying parts that could cause personal injury.
CAUTION
Owner’s cleaning solution must be compatible with regu-
lator’s trim materials.