Cashco P5 - Manual (Page 4)

IOM-P5 4
C. Trim Replacement:
1. Remove spring chamber subassembly and
piston subassembly per Section VI, Steps B.1.
– B.5.
2. Remove seat retainer (13) by turning CCW.
3. Remove poppet (8) and poppet spring (9).
4. Clean debris from within the body (1) cav-
ity. Clean all parts to be reused according
to own er's pro ce dures. NOTE: On reg u la-
tors origi nally sup plied as “oxygen clean”,
Option-M, main tenance must in clude a level of
clean li ness equal to Cash co's clean ing stan-
dard #S-1134. Contact factory for de tails.
5. Inspect all parts for damage and replace if nec-
essary. NOTE: Use only parts man u fac tured
and supplied by Cashco, Inc. for these products.
See Section VIII.
6. Place poppet spring (9) into body cavity.
7. Place poppet (8) inside the poppet spring (9).
The angled seating surface of the poppet must
face up toward the seat (12).
8. Install new seat retainer (13) with seat (12) into
body (1) cav i ty with the seat facing down ward
toward the angled seat ing surface of the pop pet
(8). Tighten seat re tain er to the following torque
val ue: 12 – 15 Ft-lbs (16 – 20 Nm).
9. Reinstall piston subassembly and spring cham-
ber assembly per Section VI, Steps B.8. – B.11.
10. Bench test unit for suitable operation. NOTE:
Regulators are not tight shutoff devices. Even if
pressure builds up beyond set point, a reg u la tor
may or may not develop bubble tight shutoff.
11. Pressurize with air and spray liquid leak de tec-
tor around body (1) and spring cham ber (6) to
test for leakage. En sure that an outlet pressure
is main tained during this leak test of at least mid-
range spring level; i.e. 2-100 psig (.14-6.9 Barg)
range spring, 51 psig (3.5 Barg) test pres sure
minimum.