Cashco Premier - Manual (Page 15)

IOM-148 15
11. Aligning matchmarks of Article 7. above,
re po si tion piston (3) back onto top side of
range spring (11) array. Using a mirror tool
and fl ashlight, look through the rect an gu lar
open ing in the lower casing (2) from within the
arm housing (4) to ensure that the piston (3)
hubs are centered within the ID of the range
spring (11) coil. It may be necessary to use
a tool to move the upper end of the range
spring (11) as necessary to be “captured” by
a piston (3) hub. Each spring (11) MUST be
captured by a hub on top and bottom ends.
12. Reinstall a new diaphragm (6) and re as sem ble
the upper casing (1) as described in this Sec-
tion, V.E.11 through V.E.23.
13. Using air pressure of V.E.23., pressurize the
actuator upper casing (1) to the upper value
of the stated benchset range plus 2 psi (0.14
Bar); i.e. for 10-26 psig (0.69-1.79 Barg)
benchset range, pressurize to 26+2 = 28 psig
(1.79+0.14 = 1.93 Barg). This pressure level
should cause the piston’s (3) lower skirt-edge
to bottom out on the lower casing (2).
14. Using only tools (i.e. no fi ngers within arm
housing (4)) to grasp the actuator stem/push
rod (10), insert push rod (10) with in ter con-
nect ed parts (9) (43) (43) (44) (54) into arm
housing (4) and engage into dangling upper
R.H. rod end (8) by rotating CW (viewed from
lower L.H. rod end (9)). Count number of
revolutions of push rod (10) en gage ment to
match those recorded in Article 4., previous,
at removal.
15. Release all air pressure into actuator upper
casing (1); remove air source from 1/4" FPT
connection.
16. Join the actuator assembly (AA) to the body
assembly (BA) as described in this Section,
V.I.
Hub w/NO
Spring (11)
Hub With
Spring (11)
Hub w/NO
Spring (11)
Hub With
Spring (11)
Spring (11)
on ALL eight
hubs
I. Joining of Body Assembly (BA) to Actuator
As sem bly (AA):
1. Determine proper orientation of actuator (AA)-
to-body (BA) for the following considerations:
• failsafe action
• installed piping orientation.
Reference Sub-sections V.C. and V.D. to see
sche mat ics of orientations available.
2. Position body assembly (BA) on a fl at work
surface. Orient such that the actuator as sem bly
(AA) can be ori ent ed with the top of the actua-
tor upper casing (1) on topside; i.e. man u al
handwheel operator sub-assembly (MHWO)
stem (58.2) vertically oriented, if supplied.
3. Place stem spacer ring (24) with its set screw
(39) located to not be protruding into the
spacer ring’s (24) internal diameter, over the
end of the valve’s stem (Ranger (7), Premier
(3.2)) and beyond the circumferential groove
of the upper round portion of the valve’s stem
(Ranger (7), Premier (3.2)).
4. Place round dust cover plate (23) over valve
stem’s (Ranger (7), Premier (3.2)) end and
onto the round part of the stem (Ranger (7),
Premier (3.2).
5. Place “C-type” snap retainer ring (57) into a
tool designed to use with snap rings. Spread
ring (57) apart and locate over valve’s stem
(Ranger (7), Premier (3.2)) end and move to
circumferential groove in round portion of stem
(Ranger (7), Premier (3.2)) and release ring
(57) into groove.
6. Push dust cover plate (23) up against the
retainer ring (57) and hold. Push stem spacer
(24) up against dust cover plate (23) and hold.
Using a 3/32" allen key wrench, tighten set
screw (39) fi rmly to secure plate (23) and
spacer (24) to stem (Ranger (7), Premier
(3.2)).
7. Using an overhead hoist, lift the actuator as-
sem bly (AA) (with position indicator ap pa ra tus
(13,14,15,16,17,31,31,34), lever arm ap pa ra-
tus (5,5,12,40,46,50,50), end-of-shaft bearing
(18) and cover plate (20) removed) properly
oriented and shift laterally over the protruding
stem (Ranger (7), Premier (3.2)) and the at-
tached dust cover plate (23). Bring the round
opening of the arm housing (4) into position
against the mounting yoke (12). Raise/lower/
tip/rotate the actuator assembly (AA) to align
Benchset Range
Quantity
of Springs
Array
psig (Barg)
5-13 (0.34-0.90) 4
7.5-19.5 (0.52-1.34) 6
10-26 (0.69-1.79) 8