Cashco Premier - Manual (Page 20)

IOM-148 20
val ue), the length of the actuator stem
sub-as sem bly (8, 9, 10, 43, 43, 43, 44,
54) must be short ened. Re peat pro ce dure
from Article 5.a. through to this Ar ti cle. If
move ment is late (i.e. move ment at more
than the lower benchset range value), the
length of the actuator stem sub-assembly
(8,9,10,43,43,43,44,54) must be length-
ened (i.e. increased). Re peat procedure
from Article 5.a. through to this Article. It
is recommended that ad just ment of ac-
tu a tor stem sub-assembly (8, 9, 10, 43,
43, 43, 44, 54) be made in one rev o lu tion
of push rod (10) increments. Re peat as
nec es sary.
t. Slowly increase air pressure in upper cas-
ing (1) until reaching the higher value of
the benchset range; i.e. pres sur ize only
until plug (Ranger (5))/disc (Premier (3.1))
is in the full open position.
u. Release all air pressure in actuator upper
casing (1). Repeat Article 5.t above and
this article, cycling valve unit (AA, BA)
closed-open-closed-open-closed sev er al
times.
v. With valve plug (Ranger (5)) / disc (Pre mier
(3.1)) in “full closed” position, re in stall
travel indicator dial (15) and dial lens (14),
securing with two socket head screws
(31). Position dial (15) such that travel
indicator (16) shows “0°” travel before
fully tightening screws (31).
w. Completion to this point completes the
benchset range adjustment. Proceed to
Subsection VI.C. to adjust 90° travel stop.
6. Units with ATC-FO (Direct) Action:
a. Disconnect the lower L.H. rod end (9)
from en gage ment with the lever arms (5)
by removing shoulder bolt (40) and lock
nut (46).
b. Swing the lever arms (5) down and as
close as possible to the travel stop screw
(35); this “closes” valve plug (6) / disc
(3.1). Ensure that the “closed” position
is reached by observing actual plug (6) /
disc (3.1) position.
c. Loosen lower upstop jam nut (43) from
securing upstop washer (54); back nut
(43) to the root of its threads on push rod
(10).
d. The upper R.H. rod end (8), lower L.H. rod
end (9), and push rod (10) act to geth er as
a turnbuckle; the upper end is stan dard
right-hand thread ed while the low er end is
left-hand thread ed. To ensure max i mum
and equal en gage ment of rod ends (8,9) to
the push rod (10), it is rec om mend ed that
the link age (8,9,10) be fully en gaged and
then re ad just ed as a safety pre cau tion.
Unequal engagement adjustment of rod ends (8,9) and
push rod (10) can cause failure of a rod end (8,9)-to-
push rod (10) connection.
a. If this occurs during bench maintenance, the
parts (8,9,10) could snap apart and cause
per son al injury.
b. If this occurs during installed operation, con trol
func tion would be lost.
e. Loosen lower L.H. rod end (9) jam nut (44)
by rotating CW (viewed from above); this
nut (44) is “left-handed”. Back nut (44) to
the root of its threads on push rod (10).
f. Using a suitable tool to prevent lower L.H.
rod end (9) from rotating, rotate push rod
(10) CCW (viewed from above) until up per
end of push rod (10) is fully engaged with
upper R.H. rod end (8). NOTE: If lower L.H.
rod end (9) reaches full en gage ment with
low er push rod (10) end fi rst, remove tool
se cur ing against ro ta tion, and allow lower
L.H. rod end (9) to rotate with push rod
(10). Once upper end of push rod (10) is
fully engaged with upper R.H. rod end (8),
rotate lower L.H. rod end (9) CW (viewed
from above) until it is fully engaged.
g. Provide a temporary air supply with an
inline ad just able airset to the actuator
upper casing (1) connection.
h. Reference the nameplate (21) attached
to the cover plate (20) that is fastened to
the arm housing (4). De ter mine the bench
setting from the nameplate (21).
i. Rotate lower L.H. rod end (9) until the rod
end (9) and the lever arm’s (5) holes are
in the same plane.
j. Loosen jam nut (45) and rotate downtra-
vel stop screw (35) out by rotating CCW
(viewed from below screw’s (35) head)
until just barely engaged in arm housing
(4).
k. Pressurize actuator (AA) to the higher
value of the benchset range pressure
indicated on the nameplate (21), while
“guiding” the lower L.H. rod end (9) hub
to its proper position between the lever
arms (5).
l. Pressurize actuator (AA) to a level as
indicated by “C” pressure in table below
according to the formula: “A” + “B” = “C”.
CAUTION