Cashco B2 - Manual (Page 4)

IOM-B2 4
10. Lubricate the threads of the body (1) with a
light weight grease that is compatible with ser-
vice use. Ro tate the spring chamber (6) CW
by hand onto the threaded portion of the body
(1) until fi rmly seated against the diaphragm
gasket (10). Tighten to the fol low ing torque
val ue: ALL SIZES: 65–70 Ft lbs (88–95 Nm).
11. Pressurize with air and spray liquid leak de-
tec tor around body (1) and spring chamber
(6) to test for leakage. En sure that an outlet
pres sure 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 min i mum.
C. Trim Replacement:
1. Remove spring chamber subassembly and
diaphragm subassembly per Section VI,
Steps B.1.–B.4.
2. Remove seat retainer (13) and seat (12) by
turning CCW.
3. 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. On regulators originally
suppled for Sanitary Service, maintenance
must in clude a level of clean li ness equal to
Cash co clean ing stan dard #S-1576. Contact
factory for de tails.
4. Inspect all parts for damage and replace if
necessary. NOTE: Use only parts man u fac-
tured and supplied by Cashco, Inc. for these
products. See Section VIII.
5. Install new seat retainer (13) with seat (12)
into body (1) cav i ty with the seat (12) facing
down ward. Tighten seat re tain er (13) to the
following torque val ue: ALL SIZES: 2–15 Ft-
lbs (16–20 Nm).
6. Reinstall diaphragm subassembly and spring
chamber subassembly per Section VI, Steps
B.9. – B.10.
7. 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.
8. 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.