cashco P7 Руководство по установке, эксплуатации и техническому обслуживанию - Страница 3
Просмотреть онлайн или скачать pdf Руководство по установке, эксплуатации и техническому обслуживанию для Контроллер cashco P7. cashco P7 9 страниц. Piston sensing single stage pressure reducing regulator
Печатать страницуVI. MAINTENANCE
SYSTEM UN DER PRES SURE. Prior to per form ing
any maintenance, isolate the reg u la tor from the
sys tem and relieve all pres sure. Failure to do so
could result in personal injury.
A. General:
1. Maintenance procedures hereinafter are based
upon re mov al of the regulator unit from the
pipeline where in stalled.
2. Owner should refer to owner's procedures for
removal, handling, cleaning and disposal of
nonreusable parts, i.e. gaskets, etc.
3. Apply a thin coat of Christo Lube to all o-rings.
4. Refer to Figure 1, Figure 2 or Figure 3 for per-
tinent design.
To prevent damage to body, use soft jaws when
placing body in a vise. Position so that vise closes
over the flats on lower end of body.
SPRING UNDER COMPRESSION. Prior to re mov ing
spring chamber, relieve range spring com pres sion
by turn ing the knob counter clock wise (CCW) until
ro ta tion comes to a com plete stop. For DOME or
RATIO Loaded, remove all loading pressure. Fail ure
to do so may result in flying parts that could cause
personal injury.
B. Poppet Seat & Piston Replacement - Spring
Loaded Vented Design:
1. Securely install the body (1) in a vise with the
spring knob (38) directed upwards.
2. Relax range spring (28) by turning the knob (38)
counter clockwise (CCW) until rotation comes
to a complete stop. NOTE: It is not necessary
to remove the knob (38) before removing the
spring chamber(2)-(upper assembly) from the
body (1). Remove upper assembly by turning
spring chamber (2) (CCW). Lift upper assembly
off of range spring (28).
3. Remove spring (28), pin (40) and spring follower
(26).
IOM-P7
WARNING
CAUTION
5
WARNING
SECTION VI
4. Grab vent cap (25) by flats and pull up to remove
piston (5) and sleeve (3) from body (1). Remove
and replace o-ring (4).
5. With thumb, press down on top of vent cap (25)
to separate piston (5) from sleeve (3). Remove
and replace o-ring (6).
6. Secure piston (5) in a vise using the flats on
the sides of piston. Remove vent cap (25) by
turning (CCW).
7. Use a pair of needle nose pliers to grasp top of
poppet (23). Pull upwards to remove poppet,
poppet seat (24) and poppet spring (22).
8. Reinstall poppet spring (22) and poppet (23) in
piston (5). Slide new poppet seat / disc (24)
over poppet. Install vent cap (25) on piston (5),
use (CW) rotation to tighten metal to metal.
9. Insert smallest o.d. of piston (5) into largest i.d.
of sleeve (3). Press tightly together for metal
to metal contact. Press this assembly into body
(1); vent cap (25) oriented upwards.
10. Place spring follower (26) with smallest o.d.
next to piston. Install spring (28).
11. Place upper spring chamber assembly on body
(1). Turn spring chamber (2) (CW) to secure
tight to body. Remove knob cover (39).
12. Rotate vent screw (36) CCW to remove screw
and spring (35). Record number of revolutions
for removal of screw. _________
13. Lower pin (40) through top / center of adjusting
screw (34), pin should rest on top of poppet (23).
NOTE: insert a small diameter tool through
center of adjusting screw and carefully press
downward on pin (40) to confirm recoil of the
poppet spring (22).
14. Install spring (35) and vent screw (36) - recalling
the number of revolutions counted for removal
from above. Reinstall knob cover.
C. Piston Replacement - Spring Loaded
Non-Vented Design:
1. Instructions are similar to Vented with excep-
tion: Assembly does not include pin (40), per
B. 3, the poppet, (23) and poppet spring (22).
per B.7 & B.8. The poppet seat (24) is replaced
by a solid disc.
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