Cashco Ranger QCT - Manual (Page 6)

IOM-Ranger 6
1. Position valve on a fl at work sur face with the
actuator assembly (AA) oriented vertical.
NOTE: If actuator assembly (AA) has been
re moved, rotate stem (7) to close plug (6), and
proceed with Steps 4 through 8.
2. If the valve actuator includes a handwheel/ad-
justing screw (58) assembly, use handwheel/
ad just ing screw (58) to remove the closing
torque; i.e. “stem windup”.
a. For ATO-FC valves: Loosen locking le ver/
nut (59) with CCW rotation when viewed
from above and rotate handwheel/ad just-
ing screw (58) CW just enough to relieve
the closing torque, but not enough to start
opening the plug (approximately 1/2-1
handwheel rev o lu tion).
b. For ATC-FO valves: Loosen locking le-
ver (59) with CCW rotation when viewed
from above and turn handwheel (58) CW
to fully close the plug (6) and then back
off enough to relieve the closing torque
by reversing the handwheel/adjusting
screw (58) CCW (approximately 1/2-1
handwheel revolution).
c. Remove machine screws (36) and cover
plate (20). Through opening in arm hous-
ing (4), insert a tool similar to a screw driv er
and apply force to either side at the lower
rod end (9). Rod end (9) will move easily
from side to side when all clos ing torque
has been relieved.
3. If the valve actuator does not include hand-
wheel (58) assembly, connect a tem po rary
air supply with an in-line ad just able airset
reg u la tor with gauge to the ac tu a tor top works.
Remove machine screws (36) and cover plate
(20).
a. For ATC-FO Valves: Pressurize ac tu a tor
to a level 2-3 psig (0.1-0.2 Barg) under the
upper pressure lev el of the bench setting
as stated on the name plate (21); i.e. 5-15
psig (.34–1.03 Barg) range, set pressure
at 12-13 psig (.83-.90 Barg). Refer to 2.c.
previous to confi rm relief of all closing
torque. Ad just ac tu a tor pres sure slow ly
±1 to 2 psig (±.07–0.2 Barg) to con fi rm
great est/eas i est move ment of lower rod
end (9). Install slotted “C” wash er on push
rod (10) be tween the lower case (2) and
the upper jam nut (43) to help se cure plug
in the closed position.
4. Remove the seal retainer screws (18) and
washers (23) and (47)
5. Remove the seal retainer (3) (full or i fi ce, re-
duced, anti-cavitation, lo-noise), seal re tain er
gas ket (9), soft seal (10) (if supplied) and metal
seal (11).
6. Through backside of body (1), place a wood en
hammer handle on the vane on the back side of
the plug (6), or the LN2–LN4 lo-noise insert (25),
and tap lightly to remove cage as sem bly.
7. Remove bearings (4)( 5) from the cage (2).
(If necessary, pry or tap the bear ings loose.)
Rotate plug (6) 135° to 180° from the closed
position and lift plug (6) from the cage (2).
8. Remove abrasion sleeve (26) or LN2–LN4
lo-noise insert, if installed.
9. Depressurize actuator for ATC-FO valves.
C. Trim Reassembly:
Inspect and clean all parts. If any parts are worn,
replace with new parts. If the stem assembly (7) has
been removed, reassemble per Section IV, Sub sec-
tion F., then proceed to reassemble the trim.
For sizes 1" - 3", Reorient unit so that the back-end
of the body (1) is directed downwards, and the
front-end is up wards and in a horizontal plane. In
this position gravity will assist in proper alignment of
internals. For 4" - 8" sizes orient body on its side.
NOTES: A. The seal retainer gasket (9) and soft
seal (10) should always be replaced after every
dis as sem bly. Use only original factory re place-
ment parts.
B. For ATC-FO Valves without handwheel
(58) assembly: Pressurize ac tu a tor to levels in di-
cat ed per previous Sub sec tion 3.a. to prop er ly align
groove in stem sub as sem bly (7) to mate with the
tongue on the plug (6).
1. Install LN2/4 “lo-noise” insert (25) or “abra sion
sleeve” insert (26) into the body (1) cavity before
inserting the cage/plug subassembly (2)(4)(5)
(6). Ensure that the insert (25)(26) is properly
located within the groove located in the back-
end of the body (1)
NOTE: For proper orientation of LN2, LN3 or LN4
trims, see Figure 6.
WARNING
Do not insert hands/fi ngers into body (1) or actuator
arm housing (4) openings while actuator is pressurized.