cashco P4 Installatie-, bedienings- en onderhoudshandleiding - Pagina 3
Blader online of download pdf Installatie-, bedienings- en onderhoudshandleiding voor {categorie_naam} cashco P4. cashco P4 9 pagina's. Balanced pressure reducing regulator
Pagina afdrukkenVI. 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. Refer to Figure 2 for basic reg u la tor and Fig-
ure 1 for the diaphragm sub as sem bly.
B. Diaphragm Replacement:
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.
1. Securely install the body (1) in a vise with
knob (4) directed upwards.
SPRING UNDER COMPRESSION.
re mov ing spring chamber, relieve range spring
com pres sion by turn ing knob CCW until ro ta tion
comes to a com plete stop. Fail ure to do so may
result in flying parts that could cause personal
injury.
2. Relax range spring (15) by turning knob (4)
CCW until rotation comes to a complete stop.
NOTE: It is not necessary to remove the knob
before removing the spring chamber (6) from
the body (1).
3. Remove spring chamber (6) by grasping the
flats and turning CCW. Upon removal, the
range spring (15), range spring clip (16), and
spring button (5) should remain inside the
spring cham ber subassembly.
4. Remove diaphragm subassembly (7) con sist-
ing of the actuator nut (7.3), diaphragm (7.1),
ac tu a tor post (7.2), ac tu a tor gasket (7.4),
ac tu a tor o-ring (7.5). Remove di a phragm
gas ket (10).
IOM-P4
SECTION VI
WARNING
CAUTION
5
WARNING
Prior to
Figure 1: Diaphragm Subassembly
5. Remove actuator nut (7.3) and separate all
parts of the diaphragm subassembly (7).
6. Clean body (1) diaphragm flange surface
and all re us able parts according to owner's
procedures.
Do not scratch di a phragm
gas ket seat ing sur face. 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
supplied 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 details.
7. Inspect and replace any necessary parts.
NOTE: Use only parts man u fac tured and
sup plied by Cashco, Inc. for these products.
See Section VIII.
8. Reassemble di a phragm subassembly (7) by
plac ing the actuator gasket (7.4), di a phragm
(7.1), and actuator o-ring (7.5) over the
threads of the actuator post (7.2). Place a
thread sealant com pound on the threads of
the ac tu a tor post (7.2) prior to installing the
actuator nut (7.3). Install ac tu a tor nut (7.3)
and tighten to the fol low ing torque value: 15
Ft-lbs (20 Nm).
9. Place the diaphragm gas ket (10) onto the
body (1) diaphragm flange. Place di a phragm
subassembly (7) on top of the gasket (10).
10. Lubricate the threads of the body (1) with
a light weight grease that is compatible with
service use. Ro tate the spring chamber (6)
CW by hand onto the threaded portion of
the body (1) until firmly seated against the
diaphragm gasket (10). Tighten to the fol low-
ing torque val ue: 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
3