Cashco Premier User Manual
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
MODEL 148
SPRING/DIAPHRAGM ROTARY ACTUATOR
I. DESCRIPTION AND SCOPE
Models 148D and 148R are multi-spring, single
acting, spring opposed, rotary ac tu a tors used with
Cashco rotary control valves. Re gard less of fi nal
installed fail ure action, the ac tu a tor is always pressurized on “top” of the traveling diaphragm plate.
Cashco has adopted a convention as follows in
identifying its rotary actuators:
“D” = Direct Action = ATC-FO Action
“R” = Reverse Action = ATO-FC Action
IOM-148
12-13
SECTION I
Model 148 actuator is fi eld reversible by arrange-
ment of actuator with respect to valve stem and with
respect to valve plug/disc orientation. Some dis as sem bly is required, but no new parts are required.
Reference the technical bulletin of the valve body
these actuators are unitized with for operating/
installation/se lec tion specifi cations; i.e. available
bench settings, strokes, etc.
Figure 1
Model 148 Actuator
SECTION II
II. MODEL NUMBERING
The basic Model Number identifi es the actuator size and action. To identify a unique Model Number, another series
of 2-character modifi ers is added to the basic number. This number will identify which basic valve body the actuator
may be used on and which set of range springs is utilized. See Table 1.
Basic Model No.
148 in2 size
Reverse Action
(ATO-FC)
1 4 8 R - 0 1
Modifi er
Valve
Product
Ranger QCT -00 through -09
Premier EZO -00 through -09
Premier Unlined -00 through -09
Modifi er
Series No.
TABLE 1
ACTUATOR MODEL NO. vs. VALVE BODY MODEL
(Model 48 included for clarity)
Full Actuator Model No.
Basic
Actuator
Model No.
48R
or
48D
148R
or
148D
148R
or
148D
148R
or
148D
* Metric body size in parenthesis.
III. INSTALLATION
Available
Bench Settings
Modifi er
Number
-01 5-15 (.34-1.03) 20 (1.4)
-01 5-13 (.34-0.90) 20 (1.4)
-02 10-26 (.69-1.79) 36 (2.5)
-03
psig (Barg) psig (Barg)
7.5-
19.5
(.52-1.34) 27 (1.9)
Air Supply
Pressure
SECTION III
Unitized Products*
1”-2” (DN25-50) Ranger QCT
3”-4” (DN80-100) Premier EZO or
Premier Unlined
3”-4” (DN80-100) Ranger QCT
6” (DN150) Premier EZO
or Premier Unlined
4”-8” (DN100-200) Ranger QCT,
10” (DN250) Premier EZO
8” (DN200) Premier EZO,
8”-12” (DN200-300) Premier
Unlined
A. Orientation:
1. Recommended actuator major axis ori en ta tion
with any model of Cashco rotary control valve
is upwards with the valve in a horizontal pipe
and the valve stem also horizontal; i.e. position
“A” for ATO-FC, or position “B” for ATC-FO.
2. Both Ranger QCT and Premier EZO/Unlined
control valve products incorporate an ex tend ed
Position A
Position B
valve body bon net and a mounting yoke to
allow the actuator to be far enough away
from the valve body or mounting fl anges to
in cor po rate a minimum of 2" (50 mm) thickness of in su la tion. It should not be necessary
to install thermal insulation to any portion of
Model 148 actuator. The maximum ambient
temperature for installation is 180°F (83°C);
the minimum ambient temperature is -20°F
(-29°C).
Position A
Position B
FIGURE 2: Mounting position of Ranger QCT to Model
148 Actuator with Model 73N-B P/P Positioner.
2
FIGURE 3: Mounting position of Ranger QCT to Model
148 Actuator with Models 9540R P/P or Smart Positioner’s PS2 and 991.
IOM-148
Position A
Position A
Position B
FIGURE 4: Mounting position of Premier EZO or Pre-
mier Unlined to Model 148 Actuator with Model 73N-B
P/P Positioner.
3. A 1/4"–NPT female connection for pneumatic
LOAD is located on the side of the actuator’s
upper diaphragm casing near the casing
fl ange joint. Reference specifi c Ranger-TB or
Pre mier-TB for location of the connection.
4. Reference the valve body instructions — IOMRang er, IOM-Premier for ad di tion al instructions on in stall ing unit in the process piping.
B. Air Supply:
1. Recommendation is that a desiccant dried,
instrument quality air supply be used. Such
a supply is recommended for outdoor in stal la tions, and is required in areas of freezing
weather conditions.
Position B
FIGURE 5: Mounting position of Premier EZO or Pre-
mier Unlined to Model 148 Actuator with Models 9540R
P/P or Smart Positioner’s PS2 and 991.
2. If air supply contains moisture and/or lu bri -
cat ing oil, the air should be fi ltered with a
co a lesc ing type of fi lter prior to use in stroking
the actuator.
3. Connection for the air loading pressure is 1/4"
female NPT. A suitable pipe thread sealant is
recommended to be used when installing the
pipe or tube fi tting. Exhibit care to prevent the
sealant from getting inside the tube/pipe.
4. If an alternate gaseous fl uid is used as a source
of loading pressure (i.e. natural gas, ni tro gen,
etc.), this gas MUST NOT BE COR RO SIVE
to the aluminum casing material.
IV. OPERATION
A. General:
1. Actuators supplied with 5-13 psig (0.34-0.90
Barg) benchset range are designed to op er ate
with or without a positioner. A 3-15 psig (0.21-
1.03 Barg) instrument output signal would be
required to operate without a positioner.
2. On larger valve body sizes the benchset
range is essentially 1.5–2.0 times that of
the 5-13 psig (0.34-090 Barg); i.e. 7.5-19.5
psig (0.52-1.34 Barg) or 10-26 psig (0.69-
1.79 Barg). Either a signal booster or a
positioner will be required for full rotation
(0°–90°) by the actuator.
IOM-148
SECTION IV
3. If an “installed characteristic” other than the
“inherent characteristic” is desired, a positioner
plus a “char ac ter iza tion cam” is required. The
inherent characteristic of Rang er QCT control
valves is linear; for Premiers the inherent
characteristic is equal percent.
4. See Tables 2 through 4 for available actuator
models with benchset ranges per valve type
and body size. (Note: Model 48 actuators
included for clarity.) Proper MAX I MUM air
supply pressures are also indicated.
3
TABLE 2
RANGER QCT
ACTUATOR BENCHSET RANGES
Valve Body Size Actuator
in.
1”, 1-1/2” & 2”
3” & 4”
4”, 6’ & 8”
*Model 48 included for clarity
Valve Body Size Actuator
in.
3” & 4”
6”
8”
10”
*Model 48 included for clarity
(DN)
(25, 40 & 50)
(80 & 100)
(100, 150, & 200)
(DN)
(80 & 100)
(150)
(200)
(250)
Model
No.*
48R-01 ATO-FC
48D-01 ATC-FO
148R-01 ATO-FC
148D-01 ATC-FO
148R-02 ATO-FC
148D-02 ATC-FO
ACTUATOR BENCHSET RANGES
Model
No.*
48R-01 ATO-FC
48D-01 ATC-FO
148R-01 ATO-FC
148D-01 ATC-FO
148R-03 ATO-FC
148D-03 ATC-FO
148R-02 ATO-FC
148D-02 ATC-FO
Failure
Action
TABLE 3
PREMIER EZO
Failure
Action
Benchset Range Supply Pressure Qty of
psig (Barg) psig (Barg)
5-15 (.34-1.03) 20 (1.4) 6
5-13 (.34-.90) 20 (1.4) 4
10-26 (.69-1.79) 36 (2.5) 8
Benchset Range Supply Pressure Qty of
psig (Barg) psig (Barg)
5-15 (.34-1.03) 20 (1.4) 6
5-13 (.34-.90) 20 (1.4) 4
7.5-19.5 (.52-1.34) 27 (1.9) 6
10-26 (.69-1.79) 30 (2.1) 8
Range
Springs
Range
Springs
Valve Body Size Actuator
in.
3” & 4”
6”
8” & 10” (200 & 250)
*Model 48 included for clarity
4
(DN)
(80 & 100)
(150)
TABLE 4
PREMIER UNLINED
ACTUATOR BENCHSET RANGES
Model
No.*
48R-01 ATO-FC
48D-01 ATC-FO
148R-01 ATO-FC
148D-01 ATC-FO
148R-03 ATO-FC
148D-03 ATC-FO
Failure
Action
Benchset Range Supply Pressure Qty of
psig (Barg) psig (Barg)
5-15 (.34-1.03) 20 (1.4) 6
5-13 (.34-.90) 20 (1.4) 4
7.5-19.5 (.52-1.34) 27 (1.9) 6
Range
Springs
IOM-148
V. MAINTENANCE
A. General:
1. Hereafter, all maintenance, disassembly, etc.,
is as sumed to be done in an indoor shop.
2. Most actuators are a sub-assembly that is
unitized with a body sub-assembly. Ref er ence
should be made to the IOM for the correct
body utilized.
3. Where the body is not being disassembled,
special care MUST be exhibited to prevent
valve stem rotation during any disassembly
or reassembly for all types of valves. Following this procedure will ensure not damaging
seat ing surfaces.
4. Remove all instrument tubing and in ter con nect ed electrical wiring. Label “ends” to en sure
proper reconnection.
5. All indicated Item Numbers that are with re spect to IOM-Ranger, IOM-Premier EZO or
IOM-Premier Unlined will be in parenthesis
and underscored; i.e. (20); the same is true
for Model 73N-B P/P positioner parts.
6. All Item Numbers that are with respect to this
IOM-148 are not underscored; i.e. (19).
7. Item Numbers that relate to the Models 9540
or Smart positioners ((PA)) are in a double
set of pa ren the sis and are underscored; i.e.
((3)).
B. Separation of Body Assembly (BA) from Ac-
tu a tor Assembly (AA):
1. Place completely joined valve assembly (AA)
(BA) upon a fl at work surface with suf fi cient
room to move the individual sub-as sem blies
(AA) (BA) around. Place matchmarks on valve
yoke (12), dust cover plate (23), arm housing
(4) and ac tu a tor lower casing (2) to use as
ref er enc es at re-assembly.
2. Remove cover plate (20) away from arm
hous ing (4) by removing four machine screws
(36).
3A. Units with Model 73N-B P/P Positioner or No
Positioner, and No Travel Limit Switch:
a. Remove the two cap screws (31) se cur ing
the travel indicator dial lens (14) and travel
indicator dial (15) using a 3/16" allen key
wrench. Using a sharp pointed tool, hook
under the edge of lens (14) and in di ca tor
dial (15) to remove.
b. Remove cap screw (32) and lock tooth
washer (55) se cur ing the bright orangecol ored travel in di ca tor (16) to the upper
IOM-148
SECTION V
end of valve stem (Rang er (7)), (Premier
(3.2)) using a 7/32" allen key wrench.
Re move travel in di ca tor (16) off of pro trud ing lo ca tor pin (51).
c. If equipped with a Model 73N-B P/P
positioner, re move the four cap screws
(33) that secure the positioner assembly
(PA) to the arm housing (4) using a 3/16"
allen key wrench. Remove positioner as sem bly (PA) and feed back range spring
(102). Loop a 6" piece of fi ne wire around
the feedback linkage subassembly (72).
Place one screw (33) back into a tapped
open ing. Pull wire taut and wrap around
pro trud ing screw (33) to keep the linkage
(72) from interfering with further dis as sem bly.
3B. Units with End-of-Shaft Model 9540R Posi-
tioners:
a. Remove clear indicator cover ((22)) by
removing two cap screws ((A3)).
b. Remove red plastic pointer ((34)) by pull-
ing outwards from hub of post-end screw
((23)).
c. Make a matchmark on the char ac ter iza-
tion cam ((24)) at the point where the
cam follower ((31)) touches. Using a
wrench remove post-end screw ((23))
that se cures characterization cam ((24)).
Pull feedback lever ((13)) downwards;
re move cam ((24)) and adhered to lock
toothed washer ((28)) and shouldered
wash er ((27)).
d. Remove the positioner unit ((I/P)) ((P/P))
from the baseplate ((26)) by removing cap
screws ((11)) with lock washers ((12))
from side and back of baseplate ((26)).
e. Remove the four cap screws ((78)) se cur-
ing the bracket ((76)), baseplate ((26))
assembly and coverplate (13) to the arm
housing (4).
3C. Units with End-of-Shaft Model 991 or PS2
I/P Positioners:
a. Remove cap screws (31) securing the
positioner mounting bracket ((9)) to
coverplate (13).
b. Set positioner / bracket assembly off to
the side.
c. Remove set screw ((16)) and washer
((17)) from end of the valve stem (Ranger
(7) or (Premier (3.2)) securing carrier
linkage ((3)) to stem.
d. Remove linkage ((3)) from end of stem.
5
4. For ATO-FC valve action, it is necessary to
remove “stem windup” - use either a. or b.
a. Rotate manual handwheel operator
(MHWO) handwheel (58.1) ap prox i mate ly
1-3 revolutions CW (viewed from above
handwheel) until interconnecting arm and
stem linkage (5, 10) of actuator “relax”.
b. Pressurize actuator casing (1) only
until the in ter con nect ing arm and stem
linkage (5,10) “relax”. DO NOT OVERPRES SUR IZE.
NOTE: Do not remove the drive coupling ((32))
unless required.
5. Using a 7/16" allen key wrench, remove the
four sockethead cap screws (34) that secure
the cover plate ((13)) (13) to the arm housing
(4). Remove the cover plate ((13)) (13) by
pulling outwards.
6. Remove ball bearing (18) over shaft-end
(Rang er (7)), (Premier (3.2)).
7. Remove lock nut (46) that secures shoulder
bolt pin (40) through lever arms (5). Remove
shoulder bolt pin (40).
8. Units with Model 73N-B P/P Positioner or No
Positioner. Remove indicator spacer (17) by
sliding over end of shaft (Ranger (7)), (Pre mier
(3.2)).
9. Grasp lever arms and rotate stem (Ranger
(7)), (Pre mier (3.2)) as required to pull down
and away from the lower rod end-L.H. (9) to
allow clearance to remove arms (5). Slide
subassembly consisting of both arms (5),
spacer (12) or characterization cam (Model
73N-B (12)), and two spring pins (50) out wards
and away from the arm housing (4) and over
shaft-end (Ranger (7)), (Premier (3.2)).
10. While securely holding the actuator assembly
(AA) with an overhead sling support, and the
body assembly (BA) to prevent movement,
remove the four bolts (24) that secure the
body yoke (12) to the actuator arm housing
(4). Slide the actuator assembly (AA) over the
stem-end (Ranger (7)), (Pre mier (3.2)). Lay
body assembly (BA) aside.
C. Changing Actuator Mounting Position (With
No Change in Failsafe Action).
1. Determine the desired mounting position of
actuator assembly (AA) with respect to valve
body assembly (BA) from Figures 6-9, fol low ing pages.
6
2. The valve body/bonnet (1) to valve body
yoke (12) can be rotated in four 90° increments around the centerline of the valve shaft
(Rang er (7)) (Premier (3.2)).
3. Separate the actuator assembly (AA) from
the body assembly (BA) as described in this
Sec tion, V.B.1. through V.B.10.
4. Determine if it is necessary to interchange
packing studs (21) on Ranger or Premier
Un lined, and yoke (12) attachment studs (20)
on Ranger or Premier Unlined per fol low ing:
Rotary Valve
Ranger 90˚, 270˚ Required
Premier Unlined 180˚ Not Required
Premier EZO 90˚, 180˚, 270˚ Not Required
Degrees
Rotation
Position Change
Packing Studs
Yoke Attach Studs
Switch of Position
5. If required, remove both packing stud nuts
(22) on Ranger or Premier Unlined, and any
external live-loaded packing com po nents
(Rang er (27) (28) (29)), and set both aside
carefully to prevent an “inadvertent mix ing”
of the component’s “stack-up”.
6. Place matchmarks between yoke (12) and
valve bon net/body (1). While holding yoke
(12) with hand, remove yoke attachment stud
nuts (22)(Ranger and Premier Unlined qty =
2) (Premier EZO qty = 4). Move loose yoke
(12) over end of stem (Ranger (7)) (Premier
(3.2)) and set aside.
7. If necessary, remove all studs (20) (21) from
Ranger or Premier Unlined body assembly
(BA) and re lo cate/in ter change as re quired.
8. Reposition yoke (12) back onto body bonnet
(1), shifted/rotated the number of degrees
re quired (i.e. 90°, 180° or 270°), using the
matchmarks to guide to correct position. Se cure yoke (12) to body bonnet (1) by engaging
two yoke at tach ment nuts (22) on Ranger and
Premier Unlined, and four nuts (22) on Pre mier
EZO. Torque per following:
3" & 4" Rangers — 35-40 ft-lbs (47-54 N-m)
All Others — 75-80 ft-lbs (101-108 N-m).
9. Reposition packing fl ange (Ranger (14))
(Pre mier Unlined (5)) over packing studs (21)
for Ranger and Premier Unlined. Reinstall
live-loaded packing components (Rang er (27)
(28) (29) 2 sets). Reengage both pack ing stud
nuts (22) for Ranger and Premier Un lined. Set
torque level on pack ing stud nuts as indicated
in IOM-Ranger QCT, IOM-Pre mier EZO, or
IOM-Premier Unlined body as sem bly (BA)
instructions.
IOM-148
FIGURE 6:
ORIENTATION – RANGER QCT ACTUATOR MOUNTING POSITIONS
WITH MODEL 73 P/P POSITIONER
REVERSE ACTION DIRECT ACTION
IOM-148
NOTES: 1. Flangeless valve design indicated; integral fl anged units follow same orientation.
2. Dimension tables are included in the Ranger-TB.
7
FIGURE 7:
ORIENTATION – RANGER QCT/PREMIER ACTUATOR MOUNTING POSITIONS
WITH MODELS 9540R P/P or 991 or PS2 I/P POSITIONERS
REVERSE ACTION DIRECT ACTION
NOTES: 1. Flangeless valve design indicated; integral fl anged units follow same orientation.
2. Dimension tables are printed in the Ranger-TB.
8
IOM-148
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