This instruction manual includes installation,adjustment, operation, maintenance, and partsinformation for the Type 1051 and 1052 Size 33diaphragm rotary actuator (figure 1). Mountingadaptations F, G, H, and J are included in thismanual. Instructions for the control valve, positioner,manual actuator, and other accessories are includedin separate manuals.
Dependent of actuator size, rotation, spring rate,initial spring compression, supply pressure, and sizeof supply piping. If stroking time is critical, consultyour Fisher sales office.
Diaphragm Casing Displacement
Clearance Volume(3): 623 cm3 (38 cubic inches)
Casing Volume(4)
90 Degree Rotation: 2390 cm3 (146 cubic inches)
60 Degree Rotation: 1890 cm3 (115 cubic inches)
Material Temperature Capabilities(1)
Nitrile Diaphragm or O-Rings(5): –40 to 82�C(–40 to 180�F)
Silicone Diaphragm: –40 to 149�C (–40 to300�F)
Delrin Push Rods and Guides (used withlever-operated switches): –40 to 82�C(6) (–40 to180�F)
Travel Indication
Graduated disc and pointer
Pressure Connections
Standard: 1/4 inch NPT female
Optional: � 1/2 or � 3/4-inch NPT female
Mounting Positions
See figure 2
Approximate Weights
Type 1051: 20 kg (45 pounds)
Type 1052: 21 kg (46 pounds)
1. The pressure/temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.2. Use this value to determine the maximum torque output allowed.3. Volume when the diaphragm is in the up position.4. Includes clearance volume.5. Nitrile O-rings are used in the optional top-mounted handwheel and in the optional up travel stop assembly.6. For higher temperature ratings, contact your Fisher sales office.7. This maximum casing pressure is not to be used for normal operating pressure. Its purpose is to allow for typical regulator supply settings and/or relief valve tolerances.
No person may install, operate, or maintain a Type1051 or 1052 Size 33 rotary actuator without first (1)being fully trained and qualified in valve, actuator,and accessory installation, operation andmaintenance, and (2) carefully reading andunderstanding the contents of this manual. If youhave any questions about these instructions, contactyour Fisher sales office before proceeding.
Note
Fisher does not assume finalresponsibility for the selection, use, ormaintenance of any product. Finalresponsibility for the selection, use,and maintenance of any Fisherproduct remains with the purchaserand end-user.
DescriptionType 1051 and 1052 Size 33 spring-and-diaphragmactuators are used on rotary-shaft valve bodies forthrottling or on-off applications. The Type 1051 may beused for on-off service without a positioner or forthrottling service with a positioner. The Type 1052uses an adjustable spring seat to control springcompression. It may be used for on-off service withouta positioner, or it may be used for throttling servicewith or without a positioner, depending on serviceconditions.
A top-mounted handwheel may be mounted forinfrequent service as a manual override. A manualactuator is recommended for routine and repeatedmanual operation. Externally adjustable travel stopsare used to limit the degree of rotation at both endsof the actuator stroke. Provisions are included forintegral mounting of optional magnetic proximityswitches. Lever-operated, mechanical switches arealso available.
The lever for the Type 1051 and 1052 size 33 actuatoris supported by bushings. The lever may be changedto accommodate valve bodies with different size valveshafts and different mounting adaptations. Levers andaccessories are available for mounting valve bodiesand equipment with the following mountingadaptations:
F and G mounting adaptations (figures 9 and 10)are for use with Fisher splined-shaft rotary valvebodies with 12.7, 15.9, and 19.1 mm (1/2, 5/8, and3/4 inch) valve shaft diameters. A stub shaft isavailable for installation on the end of the leveropposite the valve body for use as awrench-operated extension (for emergency override)or as a means of connecting a manual actuator (seefigure 14).
H mounting (figure 11) is for use with non-Fisherproducts and user-provided mounting brackets andshaft couplings. It includes a mounting surface withthreaded holes for attaching the user-providedmounting bracket. A 22.2 mm (7/8 inch) stub shaftwith flats is pinned to the lever and is used to couplethe actuator to the operated equipment. A secondstub shaft may be installed on the opposite end ofthe lever for use as a wrench-operated extension(for emergency override) or as a means forconnecting a manual actuator (see figure 14). Stubshafts are available in standard and reverseconstructions (see figure 12) to provide properoperation with the mounting position and actuatoraction desired (see figure 2).
Table 2. Bolting Torque Requirements(1)
DESCRIPTIONBOLT SIZE
TORQUEDESCRIPTIONKEY NUMBER BOLT SIZE
N�m Lbf�ft
DiaphragmCasing 5
3/8–24 27 20
Travel Stop 8 7/16–14 27 20
Diaphragm torod 9
3/8–24 54 40
Rod end tolever 18
3/8–16 54 40
Housing toyoke 23
5/16–18 41 30
Yoke to valve71
3/8–16 (See appropriate valveinstruction manual)
Clamped lever28
3/8–16 54 40
Switch Nut 78 3/8–16 27 201. Exceeding any torque requirements could damage the actuator and impair safeoperation.
J mounting (figure 13) permits use of the actuatorwith Fisher keyed-shaft valve bodies and otherkeyed-shaft equipment with 9.5, 12.7, and 15.9 mm(3/8, 1/2, and 5/8 inch) shaft diameters. A stub shaftis pinned to the lever and a valve shaft coupling ispinned to the stub shaft. The coupling has multiplekeyways (see figure 4) to accommodate mounting inthe desired position. A second stub shaft may beinstalled on the opposite end of the lever for use asa wrench-operated extension (for emergencyoverride) or as a means for connecting a manualactuator (see figure 14).
Specifications
Specifications are shown in table 1 for Type 1051and 1052 size 33 actuators. Some specifications fora given actuator as it originally comes from thefactory are stamped on a metal nameplate attachedto the actuator.
Installation
WARNING
Always wear protective gloves,clothing, and eyewear whenperforming any installation operations.Check with your process or safetyengineer for any other hazards thatmay be present from exposure toprocess media.
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
4
VALVE SERIES OR DESIGN VALVE SERIES OR DESIGN
MOUNTING ACTION(1) BALL/PLUGROTATION TO V250 V150 V200 & V300
CV500 DISC/BALLROTATION TO V250
8510B, 8532,8560
MOUNTING ACTIONROTATION TO
CLOSEV250 V150, V200 & V300
CV500V500 ROTATION TO
CLOSEV250 8560
& 9500
Right-Hand PDTCPDTO
CCWCCW
AB
AB
AB
CWCW
NANA
BA
Left-Hand PDTCPDTO
CCWCCW
NANA
DC
DC
CWCW
CD
CD
Left-Hand(Optional)(2)
PDTCPDTO
CWCW
NANA
CD
NANA
NANA
NANA
NANA
1. PDTC—Push-down-to-close, and PDTO—Push-down-to-open.2. A left hand ball will be required for the 3- through 12-inch Series B and the 14- to 20-inch, with or without attenuator.
Figure 2. Mounting Styles and Positions for the Type 1051 and 1052 Actuator
1
NOTES:POSITION 1 IS STANDARD; POSITIONS 2 THROUGH 4
To avoid parts damage, do not use anoperating pressure that exceeds theMaximum Diaphragm Casing Pressure(table 1) or produces a torque greaterthan the Maximum Allowable ValveShaft Torque (see Catalog 14). Usepressure- limiting or pressure-relievingdevices to prevent the diaphragmcasing pressure from exceeding itslimit.
The actuator, as it comes from the factory, isnormally mounted on a valve body. Follow theprocedures given in the valve instruction manualwhen installing the control valve in the pipeline.
If a positioner is ordered with the actuator, thepressure connection to the actuator is normallymade at the factory. If it is necessary to make thisconnection, run either 1/4-inch pipe or 3/8-inchtubing (for standard diaphragm case fittings)between the pressure connection and theinstrument. Keep the length of tubing or pipe asshort as possible to avoid transmission lag in thecontrol signal.
When the control valve is completely installed andconnected to the controlling instrument, check tomake sure that the action is correct (air-to-open orair-to-close) and that the controlling instrument isproperly configured for the desired action. Forsuccessful operation, the diaphragm rod, lever, andvalve shaft must move freely in response to changesin the loading pressure on the diaphragm.
Actuator Mounting and ChangingActuator MountingUse the following steps to mount the actuator or tochange actuator mounting style or position.
F and G Mounting AdaptationsUnless otherwise specified, key numbers referencedin the following procedures are shown in figure 9 forthe Type 1051 actuator and in figure 10 for the Type1052 actuator.
1. Proceed as appropriate:
If the Actuator is mounted on a valve body and itis necessary to change mounting style or position,the actuator must first be separated from the valve
body. Proceed to the Disassembly portion of theChanging or Replacing Actuator Lever procedure,observe all warnings, perform steps 1 through 6, andreturn to step 2 which follows.
If the Actuator is not mounted on a valve body,proceed to the Disassembly portion of the Changingor Replacing Actuator Lever procedure, performsteps 2 through 5, and return to step 2 which follows.
2. Refer to figure 2 for available mounting styles andpositions. When mounting on a Vee-Ball DesignV150, V200 or V300 valve, check the valve manual todetermine if it is Series B. The actuator is normallypositioned vertically with the valve in a horizontalpipeline.
3. Determine whether the actuator mounting yoke(key 22) will be mounted on the housing coverassembly (key 33) side or on the actuator housingboss side of the actuator. If the desired mountingposition and style require moving the mounting yokeand travel indicator (key 35) to opposite sides of theactuator, remove the machine screws (key 38), thetravel indicator pointer (key 37), the machine screws,and the travel indicator scale (key 35). Remove thecap screws (key 23) and the mounting yoke. Installthe mounting yoke in the desired position (on thehousing cover assembly or on the actuator housingboss). See table 2 for recommended torque for themounting cap screws. Install the travel indicatorcomponents on the opposite side of the actuator.See figure 14 for travel indicator components usedwith wrench-operated extensions and manualactuators.
4. Before sliding the valve shaft into the lever,position the valve ball or disk as follows:
For push-down-to-close action, the valve ball ordisk should be in the fully open position.
For push-down-to-open action, the valve ball ordisk should be in the fully closed position (see thevalve body instruction manual).
5. Make sure that the index markings on the valveshaft are properly aligned with the markings on thelever and slide the valve shaft into the lever. Installthe valve mounting cap screws, washers, and nutsand tighten to the torque value given in theappropriate valve body instruction manual.
6. Ensure all end play in the valve shaft is removedby pulling the valve shaft toward the actuator asmuch as possible. Make sure the actuator rod isperpendicular to the valve shaft. Refer to the valveinstruction manual for specific end playconsiderations.
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
6
Figure 3.Travel Stops and Switch Positions on the Type 1051 and 1052 Size 33 Actuator
HOUSING COVERASSEMBLY (KEY 33) PROXIMITY
SWITCHES
MOUNTING POSITION FORSWITCH INDICATINGTOP OF STROKE(ACTIVATED BYOUTER CAM)
YOKEMOUNTINGBOSS
UP TRAVELSTOP
DOWN TRAVEL STOP
MOUNTING POSITION FOR SWITCHINDICATING BOTTOM OF STROKE(ACTIVATED BY INNER CAM)W4738/IL
7. Tighten the socket head cap screw whichcompresses the splined lever connection to thevalve shaft (see table 2).
CAUTION
When adjusting the travel stop for theclosed position of the valve ball ordisk, refer to the appropriate valveinstruction manual for detailedprocedures. Undertravel or overtravelat the closed position may result inpoor valve performance and/ordamage to the equipment.
8. Adjust the up travel stop (see figure 3) so that thevalve ball or disk is in the desired position.
WARNING
To avoid personal injury andequipment damage from moving parts,keep fingers and tools clear whilestroking the actuator with the coverremoved.
9. Stroke the actuator and adjust the down travelstop so that the valve ball or disk is in the desiredposition.
10. Make sure that the travel indicator pointermatches the ball or disk position. Remove and installin the proper position if necessary.
11. Install the cover plate or switch mounting plate(key 59) with cap screws (key 60).
12. Refer to the table of contents for accessoryinstallation procedures.
H Mounting AdaptationUnless otherwise specified, key numbers referencedin the following procedures are shown in figure 9 forthe Type 1051 actuator and in figure 10 for the Type1052 actuator. Unique parts used for the H mountingadaptation are shown in figure 11 for single stubshaft construction and in figure 14 for dual stub shaftconstruction.
1. To change mounting style or position, theactuator must be separated from the valve body (orother operated equipment). Remove the cap screwsused to attach the actuator to the valve body (orother operated equipment) and remove the actuator.
2. Determine the desired mounting position. Notethat stub shafts are available in standard andreverse constructions so that proper alignment withthe operated equipment can be achieved (see figure12). Refer to figure 2 for available mounting stylesand positions.
3. If it is necessary to install or change stub shaft(s),the actuator lever (key 27) must be removed.Perform all applicable operations in the Disassemblyportion of the Changing or Replacing Actuator Leverprocedure. Install the stub shafts for the constructiondesired (refer to figures 11 and 14) and reassemblethe actuator.
4. Determine whether the operated equipment willbe mounted on the housing cover assembly (key 33)side or on the actuator housing boss side of theactuator. Depending on the desired mounting styleand position, it may be necessary to move theoperated equipment and travel indicator componentsto opposite sides of the actuator. If so, remove thetravel indicator components, the operatedequipment, and the mounting bracket if used. Installthe operated equipment or mounting bracket in thedesired position (on the housing cover assembly oron the actuator housing boss). See table 2 forrecommended torque for the mounting cap screws.Install the travel indicator components on the side ofthe actuator opposite the operated equipment. Referto figure 14 for travel indicator components usedwith wrench-operated extensions and manualactuators.
5. Before coupling the operated equipment to theactuator stub shaft, position the equipment asfollows:
For push-down-to-activate (open) action, theequipment should be in the fully de-activated(closed) position.
For push-down-to-deactivate (close) action, theequipment should be in the fully activated (open)position.
6. Install the required shaft coupling and theoperated equipment.
CAUTION
When adjusting the travel stops tolimit rotation, be certain that therotation produced does not exceed thesafe limit of the operated equipment.Undertravel or overtravel may result inpoor performance and/or damage tothe equipment.
7. Adjust the up travel stop (see figure 3) so that theoperated equipment is in the desired position.
WARNING
To avoid personal injury andequipment damage from moving parts,keep fingers and tools clear whilestroking the actuator with the coverremoved.
8. Stroke the actuator and adjust the down travelstop so that the operated equipment is in the desiredposition.
9. Make sure that the travel indicator pointermatches the ball or disk position. Remove and installin the proper position if necessary.
10. Refer to the table of contents for accessoryinstallation procedures.
J Mounting AdaptationUnless otherwise specified, key numbers referencedin the following procedures are shown in figure 9 forthe Type 1051 actuator and in figure 10 for the Type1052 actuator. Unique parts used for the J mountingadaptation are shown in figure 13 for single stubshaft construction and in figure 14 for dual stub shaftconstruction.
1. If the actuator is mounted on a valve body and itis necessary to change mounting style or position,the actuator must be separated from the valve body.Proceed to the disassembly portion of the Changingor Replacing Actuator Lever procedure, observe allwarnings, perform steps 1 through 6, and return tostep 2 which follows.
2. Refer to figure 2 for available mounting styles andpositions. The actuator is normally mountedvertically on a valve body that is installed in ahorizontal pipeline.
3. If it is necessary to install or change stub shaft(s),the actuator lever (key 27) must be removed.Perform all applicable operations in the Disassemblyportion of the Changing or Replacing Actuator Leverprocedure. Install the stub shafts for the constructiondesired as shown in figure 13 and reassemble theactuator.
4. Determine whether the actuator mounting yoke(key 22) will be mounted on the housing coverassembly (key 33) or on the actuator housing boss.If the desired mounting position and style requiresmoving the mounting yoke and travel indicatorcomponents to opposite sides of the actuator,remove the travel indicator components, the valveshaft coupling (key 80 for Type 1051, or key 90 forType 1052), cap screws (key 23), and the mountingyoke. Install the mounting yoke in the desiredposition (on the housing cover assembly or on theactuator housing boss). See table 2 forrecommended torque for the mounting cap screws.Install the valve shaft coupling on the actuator stubshaft.
Install the travel indicator components on theopposite side of the actuator. See figure 14 for travelindicator components used with wrench-operatedextensions and manual actuators.
5. Before coupling the valve to the actuator, positionthe valve ball or disk as follows:
For push-down-to-close action, the valve ball diskshould be in the fully open position.
For push-down-to-open action, the valve ball ordisk should be in the fully closed position (see thevalve body instruction manual).
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
8
DESIREDDESIRED
ACTUATOR COUPLING
VALVE SHAFT KEYWAY TO USE FOR FISHTAIL�DISK VALVE BODIES(1) (SEE FIGURE 2)
DESIREDACTUATOR
ACTION
DESIREDSHAFT
ROTATION,
ACTUATORMOUNTINGPOSITION
COUPLINGKEYWAYTO USE(3)
Clockwise toClose Valve Action(2)
Counterclockwise toClose Valve Action(2)
ACTIONO O ,
DEGREES POSITION TO USE(3)Flow Leftto Right(2)
Flow Rightto Left(2)
Flow Leftto Right(2)
Flow Rightto Left(2)
1 B Nose Tail Tail Nose
Push Down to60 or 90
2 A Tail Nose Nose TailPush Down toOpen (PDTO 60 or 90
3 B Tail Nose Nose Tailp (
4 A Nose Tail Tail Nose
1 A Tail Nose Tail Nose
Push Down to60(3) or 90
2 B Tail Nose Tail NosePush Down toClose (PDTC) 60(3) or 90
3 A Nose Tail Nose Tail( )
4 B Nose Tail Nose Tail1. For conventional disk valve bodies, use either valve shaft keyway.2. When viewed from actuator side of valve body.3. For 60-degree rotation with PDTC action, the coupling and actuator output shaft assembly will offset 30 degrees clockwise (for actuator housing construction style B), orcounterclockwise (for actuator housing construction Style A) in the lever when viewed from the splined end of the actuator shaft. 30 degrees is one spline tooth for 9.5, 12.7, and15.9 mm (3/8, 1/2, and 5/8-inch) valve shafts and two spline teeth for 19.1 mm (3/4-inch) valve shafts.
Figure 4. Valve Shaft Coupling for the J Mounting Adaptation
A3253*/IL
19A1465-B/IL
NOTES:FOR USE WITH J MOUNTING ADAPTATION.
COUPLING
FULL KEYWAYLOCATED ONNOSE AND TAILSIDE OF VALVE SHAFT
VALVE SHAFT
PARTIAL KEYWAYFOR DETERMININGDISC POSITION
USE APPROPRIATEVALVE SHAFTKEYWAY ASINDICATEDIN TABLE 5
USE APPROPRIATE LETTEREDKEYWAY AS INDICATED INTABLE 5 KEYWAY A KEYWAY B
ABOVEKEYWAY A
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���� �����
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1
6. The valve shaft coupling (see figure 4) has twokeyways lettered A and B (the letters C and D on thecoupling are not used and may be disregarded).Align the appropriate keyway with the keyway inshaft of the operated equipment. When used with aFisher butterfly valve body, refer to the table andillustration in figure 4 for proper orientation of thecoupling and valve shaft. Install the woodruff key
(key 81 for Type 1051, key 91 for Type 1052) in thevalve shaft keyseat, lubricate the inside of thecoupling, and slide the valve shaft into the coupling.
7. Install the valve mounting cap screws, washers,and nuts and tighten to the torque value given in theappropriate valve body instruction manual.
When adjusting the travel stop for theclosed position of the valve ball ordisk, refer to the appropriate valvebody instruction manual for detailedprocedures. Undertravel or overtravelat the closed position may result inpoor valve performance and/ordamage to the equipment.
8. Adjust the up travel stop so that the valve ball ordisk is in the desired position.
WARNING
To avoid personal injury andequipment damage from moving parts,keep fingers and tools clear whilestroking the actuator with the coverremoved.
9. Stroke the actuator and adjust the down travelstop so that the valve ball or disk is in the desiredposition.
10. Make sure that the travel indicator pointermatches the ball or disk position. Remove and installin the proper position if necessary.
11. Refer to the table of contents for accessoryinstallation procedures.
Type 1052 Spring CompressionAdjustment
Initial Compression
Key numbers referred to in this procedure are shownin figure 10 unless otherwise specified.
The Type 1052 nameplate specifies an initial setadjusted into the actuator spring. Initial set is thecasing pressure at which the diaphragm (key 3) anddiaphragm rod (key 10) begin to move away fromthe stop in the upper diaphragm case (key 1) whenthe actuator is disengaged from the control valvebody or other operated equipment. The initial setwas determined from the service conditionsspecified when the actuator was ordered, so thatwhen the actuator and valve are in service, the valveball or disk seats properly and full travel is obtained
Figure 5. Spring Adjustment
W4767/IL
TRAVELSTOPS
with the supply pressure specified on the order andshown on the nameplate.
Before adjusting spring tension to change initial set,the valve body or other operated equipment must beremoved or otherwise disengaged from the actuator.Refer to the applicable steps given under theappropriate mounting adaptation in the ActuatorMounting and Changing Actuator Mountingprocedure.
To gain access to the spring adjusting screw, eitherthe spring adjuster cover (key 117) or the switchmounting plate (key 59) must be removed. Ifexternally mounted switches are used, remove themas an assembly by removing the cap screws (key75, figure 16) and the switch mounting plate (key 1,figure 16). In order to gain access to the cap screws,it may be necessary to loosen the hex nuts (key 77,figure 16) and slide the switches away from theactuator housing.
Note that the lower part of the spring adjusting screw(key 74) is notched so that it can be rotated with ascrewdriver or other flat bladed tool. To decreasespring compression, rotate the spring adjustingscrew to the right (see figure 5). To increase springcompression, rotate the spring adjusting screw to theleft (clockwise when viewed from above). Adjust thespring so that the diaphragm rod just starts to travelat the initial set pressure specified on the nameplate.When the desired initial set has been achieved,install the spring adjuster cover or switch mountingplate.
1. For more detailed information concerning proper spring selection to obtain thetorque required, consult your Fisher sales office.
Stroking Range
Key numbers referred to in this procedure are shownin figure 10 unless otherwise specified.
If, under operating conditions, the desired strokingrange cannot be achieved with the casing pressureused, it may be possible to shift the stroking rangeby making a spring adjustment to change the initialspring compression. A spring adjustment shifts thecasing pressure span and equally increases (ordecreases) the casing pressure at which theactuator begins to stroke and the pressure at whichthe actuator reaches full travel.
To gain access to the spring adjusting screw, eitherthe spring adjuster cover (key 117) or the switchmounting plate (key 59) must be removed. Ifexternally mounted switches are used, remove themas an assembly by removing the cap screws (key75, figure 16) and the switch mounting plate (key 1,figure 16). In order to gain access to the cap screws,it may be necessary to loosen the hex nuts (key 77,figure 16) and slide the switches away from theactuator housing.
Note that the lower part of the spring adjusting screw(key 74) is notched so that it can be rotated with a
screwdriver or other flat bladed tool. To shift thecasing pressure span downward, rotate the springadjusting screw to the right (see figure 5). To shiftthe casing pressure span upward, rotate the springadjusting screw to the left. When the desiredstroking range has been achieved, replace thespring adjuster cover or the switch mounting plate.
MaintenanceActuator parts are subject to normal wear and mustbe inspected and replaced as necessary. Thefrequency of inspection and replacement dependsupon the severity of service conditions. Instructionsare given below for disassembly and assembly ofparts. Key numbers referenced in the following stepsare shown in figure 9 for the Type 1051 actuator andin figure 10 for the Type 1052, except as listed belowor otherwise specified in the procedures. If new partsare required for repair or to change construction, useonly genuine Fisher replacement parts.
Mounting Adaptations
F and G Adaptations
The procedures given in this instruction manualapply directly to F and G mounting adaptations.Refer to figures 9 and 10.
H Mounting Adaptations
Whenever the procedures require separating theactuator from the operated equipment, it may benecessary to remove brackets, couplings, and stubshafts before proceeding. Refer to figure 11 for partsused with the H mounting adaptation.
J Mounting Adaptations
Whenever the procedures require separating theactuator from the valve body, it may be necessary toremove couplings and keyways. Refer to figure 13for parts used with the J mounting adaptation.
WARNING
Avoid personal injury or propertydamage from sudden release ofprocess pressure or bursting of parts.Before performing any maintenanceoperations:
� Always wear protective gloves,clothing, and eyewear whenperforming any maintenanceoperations to avoid personal injury.
� Disconnect any operating linesproviding air pressure, electric power,or a control signal to the actuator. Besure the actuator cannot suddenlyopen or close the valve.
� Use bypass valves or completelyshut off the process to isolate thevalve from process pressure. Relieveprocess pressure from both sides ofthe valve. Drain the process mediafrom both sides of the valve.
� Vent the power actuator loadingpressure and relieve any actuatorspring precompression.
� Use lock-out procedures to besure that the above measures stay ineffect while you work on theequipment.
� The valve packing box maycontain process fluids that arepressurized, even when the valve hasbeen removed from the pipeline.Process fluids may spray out underpressure when removing the packinghardware or packing rings.
� Check with your process or safetyengineer for any hazards that may bepresent from exposure to processmedia.
Replacing Diaphragm
Disassembly1. Bypass the control valve. Relieve all loadingpressure, and remove the tubing or pipe from theupper diaphragm case (key 1).
2. Observe the position of the travel indicatorpointer (key 37) and mark its position on the travelindicator scale (key 35).
WARNING
Failure to control spring tensionagainst the upper diaphragm case asoutlined in the following step couldresult in sudden spring
decompression causing bodily injuryor equipment damage. Control springtension by following step 3 closely.
3. Loosen the hex jam nut (key 84 for Type 1051, orkey 86 for Type 1052) on the up travel stop. Thisstop is nearest to the positioner or positioner cover(key 39; also see figure 3). Screw the travel stop in(turn it clockwise) until it can be verified that allspring tension has been removed from thediaphragm stop in the upper diaphragm case, i.e.when any movement of the travel indicator pointer isobserved, all spring tension against the upperdiaphragm case stop has been removed. Do notrotate the travel stop past this position as additionalcompression of the spring is not necessary ordesirable.
4. Carefully remove all cap screws and hex nuts(keys 5 and 6) from the diaphragm case.
5. Remove the diaphragm case and the diaphragm(key 3).
6. Inspect the diaphragm plate (key 4). If thediaphragm plate is damaged or if furtherdisassembly of the actuator is required, proceed tothe Diaphragm Plate, Diaphragm Rod, Spring, andSpring Seat procedure.
7. Inspect the diaphragm and replace if necessary.
Assembly1. Place the diaphragm (key 3) on the diaphragmplate (key 4), making certain that it is properlycentered.
2. Make sure that the up travel stop (see figure 3) isscrewed in sufficiently to eliminate interference ofthe diaphragm plate (key 4) with the upperdiaphragm case.
3. Observe the correct position of the loadingconnection fitting and install the upper diaphragmcase (key 1). Replace the cap screws and nuts (keys 5 and 6) which secure the upper diaphragmcase to the actuator housing. Tighten the nuts in analternating fashion (see table 2).
CAUTION
When adjusting the travel stop for theclosed position of the valve ball ordisk, refer to the appropriate valvebody instruction manual for detailedprocedures. Undertravel or overtravelof many valve types may result in poorvalve performance and/or damage tothe equipment.
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
12
4. Adjust the up travel stop (see figure 3). If theupper travel stop establishes the closed position ofthe valve ball or disk, refer to the valve bodyinstruction manual and follow the procedures givenfor properly establishing the closed position.Proceed as appropriate:
For F, G, and J mounting adaptations, performoperations beginning with step 8 under theappropriate mounting adaptation section of theActuator Mounting and Changing Actuator Mountingprocedure.
For H mounting adaptations, perform operationsbeginning with step 7 under the appropriatemounting adaptation section of the ActuatorMounting and Changing Actuator Mountingprocedure.
5. Return the travel indicator pointer to its originalposition as previously marked on the travel indicatorscale.
6. Install the inlet piping to the upper diaphragmcase.
Replacing Diaphragm Plate, DiaphragmRod, Spring, and Spring Set
Disassembly1. Perform steps 1 through 6 of the Disassemblyportion of the Replacing Diaphragm procedureabove.
For Type 1052 Actuators Only
a. Before removing the diaphragm plate, springcompression must be relieved. Proceed asappropriate to gain access to the spring adjustingscrew:
� Without lever-operated switches, remove thecap screws (key 21) and the spring adjuster cover(key 117).
� With lever-operated switches, remove theswitches as an assembly by removing the capscrews (key 75, figure 16) and the switch mountingplate (key 1, figure 16). In order to gain access to thecap screws, it may be necessary to loosen the hexnuts (key 77, figure 16) and slide the switches awayfrom the actuator housing.
WARNING
To avoid personal injury fromprecompressed spring force suddenlythrusting parts away from the actuator,spring compression must first berelieved by rotating the springadjusting screw until the spring seat isbottomed against the spring adjuster.Closely follow the instructions below.
b. To relieve spring compression, insert ascrewdriver into the notches on the springadjusting screw and rotate the spring adjustingscrew to the right (counter-clockwise whenviewed from the top of the actuator) until thespring seat (key 13) is bottomed against thespring adjuster.
2. For Type 1051 and 1052 Actuators, using a5/16-inch hex wrench, unscrew and remove thesocket head cap screw (key 9) which secures thediaphragm plate (key 4) to the diaphragm rod (key10). Remove the diaphragm plate and the upperthrust washer (key 83 for Type 1051, or key 72 forType 1052).
3. For the Type 1051, remove the spring (key 11)and spring seat (key 14).
For the Type 1052, remove the spring (key 11),spring seat with adjusting screw (keys 74 and 14),and lower thrust washer (key 72).
Note
At this stage of disassembly, it may bedetermined that further disassembly isnot necessary. If separation of thediaphragm rod from the lever is notwarranted, proceed to the Assemblyportion of this procedure.
4. To gain access to the cap screw (key 18) whichsecures the diaphragm rod to the lever, the housingcover assembly (key 33) must be removed. Beforethe housing cover assembly can be removed, one ofthe following procedures must be performed.Proceed as appropriate:
For actuators with valve bodies mounted on thehousing cover assembly (key 33) side of theactuator, the actuator must be separated from thevalve body to provide access to the cap screw (key18). Proceed to the Disassembly portion of theChanging or Replacing Actuator Lever procedureand perform steps 2 through 6.
Figure 6. Spring Seat Pre-Set Dimensions for the Type 1052Size 33 Actuator
10B1601-AA3777/IL
For actuators with valve bodies mounted on theactuator housing boss side of the actuator,remove the travel indicator pointer (key 37).
5. Remove the cap screws and washers (keys 34and 63) and the housing cover assembly (key 33).
6. Remove the outer switch cam, if used, byremoving the two hex head machine screws,spacers, and retaining washers (keys 119, 132, and144, figures 15 and 16). Note that the retainingwashers help to keep all parts together as anassembly.
7. Remove the cap screw (key 18) that secures theactuator lever (key 27) to the diaphragm rod.Remove the diaphragm rod.
8. Inspect all parts and replace if necessary.
9. If total disassembly of the actuator is required, orif the actuator will be assembled for use with a valvebody with a different valve shaft diameter, proceedto the Changing or Replacing Actuator Leverprocedure.
AssemblyFor the Type 1052 Only
a. Lubricate the threads of the spring adjustingscrew (key 74) with Lubriplate Mag-1. Also
lubricate the bottom portion of the springadjusting screw which contacts the lower thrustwasher (key 72).
b. Screw the spring adjusting screw onto thespring seat (key 14) to minimize spring seatadjustment after assembly, refer to figure 6 andpre-set the spring adjusting screw to theappropriate dimension.
c. Place the lower thrust washer into the lowerspring barrel area.
For Type 1051 and 1052
1. Lubricate the threads of the socket head capscrew (key 9) with Lubriplate Mag-1. Also lubricatethe bottom surface of the diaphragm plate whichcontacts the upper thrust washer (key 83 for Type1051, or key 72 for Type 1052).
2. Insert the socket head cap screw through thediaphragm plate (key 4) and into the diaphragm rod(key 10). Tighten the cap screw four or five turns.
3. Install the spring seat (with spring adjusting screwfor the Type 1052 actuator), spring, and upper thrustwasher.
4. Insert the diaphragm plate/diaphragm rodassembly into the spring barrel. Make sure that thenotch in the diaphragm rod is oriented according toview shown in figures 9 and 10, i.e. the notch in thediaphragm rod must face the positioner or positionercover plate (key 39).
5. Rotate the lever so that it straddles the sphericalbearing in the diaphragm rod. It may be necessary toexert lateral pressure on the diaphragm rod toachieve alignment of the rod with the lever. Installthe cap screw (key 18) (see table 2). Use the uptravel stop (see figure 3) to keep the lever fromrotating during tightening.
6. If the actuator uses an outer switch cam, installthe outer cam (key 170, figures 15 and 16) using thetwo hex head machine screws, spacers, andretaining washers (keys 119, 132, and 144). Notethat the retaining washers help to keep all partstogether as an assembly to ease installation. Makesure that the cam is mounted on the lever accordingto the orientation shown in figure 7.
7. Install the housing cover assembly (key 33) withcap screws and washers (keys 34 and 63).
8. Tighten the socket head cap screw (key 9) with a5/16 hex wrench until the diaphragm plate is fullyseated against the diaphragm rod. Tighten the capscrew to the torque value in table 2.
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
14
Figure 7. Orientation of Switch and Positioner Cams on theLever of the Type 1051 and 1052 Size 33 Actuator
OUTER SWITCH CAM (ACTIVATESSWITCH INDICATING TOP OF STROKE)
W4767/IL
9. Perform steps 1 through 5 of the Assemblyportion of the Replacing Diaphragm procedure.
10. For Type 1052 actuators, refer to the Type1052 Spring Compression Adjustment procedureand adjust the spring for the desired initial set.
11. Install the cover plate or switch mounting plate(key 59) with cap screws (key 60). If switches areused, observe the marks made during removal of thecover plate.
12. Install the spring adjuster cover (key 117) or theswitch mounting plate (key 1, figure 16) with theappropriate cap screws.
13. Install the travel indicator (key 37) if removed.
14. If the actuator was removed from the valvebody, refer to the appropriate section in the ActuatorMounting and Changing Actuator Mountingprocedure and proceed as follows:
For F and G mounting adaptations, perform allapplicable steps beginning with step 3
For H and J mounting adaptations, perform allapplicable steps beginning with step 4
Changing or Replacing Actuator Lever
Note
The lever and associated parts may beremoved as an independent procedurewithout disassembling the upperdiaphragm casing or spring barrelcomponents. Or, the lever may beremoved after performing theoperations given in the ReplacingDiaphragm procedure and in theDiaphragm Plate, Diaphragm Rod,Spring, and Spring Seat procedure.
Disassembly
WARNING
Avoid personal injury or propertydamage from sudden release ofprocess pressure or bursting of parts.Before performing any maintenanceoperations:
� Always wear protective gloves,clothing, and eyewear whenperforming any maintenanceoperations to avoid personal injury.
� Disconnect any operating linesproviding air pressure, electric power,or a control signal to the actuator. Besure the actuator cannot suddenlyopen or close the valve.
� Use bypass valves or completelyshut off the process to isolate thevalve from process pressure. Relieveprocess pressure from both sides ofthe valve. Drain the process mediafrom both sides of the valve.
� Vent the power actuator loadingpressure and relieve any actuatorspring precompression.
� Use lock-out procedures to besure that the above measures stay ineffect while you work on theequipment.
� The valve packing box maycontain process fluids that arepressurized, even when the valve hasbeen removed from the pipeline.Process fluids may spray out underpressure when removing the packinghardware or packing rings.
� Check with your process or safetyengineer for any other hazards thatmay be present from exposure toprocess media.
1. Isolate the valve body from the process. Releaseprocess pressure and vent all actuator pressure.
2. If externally mounted switches are used, removethem as an assembly by removing the cap screws(key 75, figure 16) and the switch mounting plate(key 1, figure 16). In order to gain access to the capscrews, it may be necessary to loosen the hex nuts(key 77, figure 16) and slide the switches away fromthe actuator housing.
3. If switches are used, mark the position of theswitch mounting plate (key 59) on the actuatorhousing so it may be returned to the exact sameposition.
4. Remove the cap screws (key 60) and the coverplate or switch mounting plate (key 59). If switchesare used, leave the push rod assemblies (keys 169and 170, figure 16) or the proximity switchassemblies (key 7, figure 15) undisturbed.
5. Using a 5/16-inch hex wrench, loosen the sockethead cap screw (key 28) which compresses thesplined lever connection around the valve shaft.
6. Separate the actuator from the valve body byremoving the cap screws and washers which securethe valve to the mounting yoke (key 22). For someconstructions of H and J mounting adaptations, itmay be necessary to remove other mounting andcoupling parts.
7. If the valve body (or other operated equipment) ismounted on the housing cover (key 33) side of theactuator, remove the mounting yoke and travelindicator pointer.
8. Remove the cap screws and washers (keys 34and 63) and the housing cover (key 33).
9. If the actuator is equipped with a positioner,remove the positioner cam (see figure 7) byremoving the two hex head machine screws whichsecure the cam to the lever.
10. If the actuator is equipped with cam-operatedswitches, remove the outer cam (see figure 7) withthe two hex head machine screws, spacers, andretaining washers (keys 119, 132, and 144,figures 15 and 16). Note that the retaining washershelp to keep all parts together as an assembly.
WARNING
Failure to relieve spring tension on thediaphragm rod to lever connectionbefore removing the cap screw (key18) may result in personal injury andequipment damage from sudden andforceful movement of the diaphragmrod. Relieve spring tension byperforming the operations described inthe next step.
11. Relieve all spring loading on the diaphragm rod(key 10) to lever (key 27) connection by backing out(turning counter-clockwise) the up position travelstop (see figure 3). When the travel stop is no longerin direct contact with the lever (key 27), it can bedetermined that all spring compression is beingcontained by the stop in the upper diaphragm case(key 1).
12. Remove the cap screw (key 18) which securesthe diaphragm rod (key 10) to the lever (key 27).Disconnect the lever from the diaphragm rod byrotating the lever away from the diaphragm rod.
13. Remove and inspect the lever. If the lever isworn or damaged, or if the actuator will be mountedto a valve body requiring a different size lever,replace the lever.
14. Inspect the bushings (key 31). If bushings areexcessively worn or damaged, remove them with apress. Press in new bushings so that they are flushwith the interior surfaces of the actuator housingboss and housing cover assembly.
Assembly1. Refer to figure 7 for the correct orientation of theinner switch cam (if used); be sure that it is attachedto the lever in the proper orientation.
2. Refer to figure 7 for the correct orientation of thelever during assembly. Insert the lever into thebushing in the actuator housing boss.
3. If the diaphragm rod has been removed, performall operations through step 3 of the Assembly portionof the Diaphragm Plate, Diaphragm Rod, Spring andSpring Seat procedure.
4. Rotate the lever so that it straddles the sphericalbearing in the diaphragm rod. It may be necessary toexert lateral pressure on the diaphragm rod toachieve alignment of the rod with the lever. Installthe cap screw (key 18) and tighten to the torquevalue in table 2.
5. If an outer switch cam is used, install the camusing the two machine screws, spacers, and
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
16
retaining washers. Note that the retaining washershelp to keep all parts together as an assembly.Observe the orientation shown in figure 7.
6. If a positioner is used, install the positioner camwith machine screws. Be sure to observe theorientation shown in figure 7 and follow allprocedures given in the positioner instructionmanual.
7. Install the housing cover assembly (key 33).
8. If the diaphragm plate has been removed, tightenthe socket head cap screw (key 9) with a 5/16 hexwrench until the diaphragm plate is fully seatedagainst the diaphragm rod. Tighten the cap screw tothe torque value in table 2.
9. If the upper diaphragm case has been removed,perform all applicable steps in the Assembly portionof the Replacing Diaphragm procedure.
10. Refer to the Actuator Mounting and ChangingActuator Mounting procedure and proceed asfollows:
For F and G mounting adaptations, start with step 3
For H and J mounting adaptations, start with step 4
11. For Type 1052 actuators only, refer to the Type1052 Spring Compression Adjustment procedureand adjust the spring for the desired initial set.
Proximity Switches, Lever OperatedSwitches, and PositionerThe proximity switches (see figure 15), leveroperated switches (see figure 16), and positionerused with Type 1051 and 1052 size 33 actuator usecams (see figure 7) mounted on the lever to transmitvalve ball or disk position feedback to theaccessories. These cams must be attached to thelever before accessories can be installed.
Installing the CamKey numbers referred to in the following proceduresare shown in figure 15 for proximity switchinstallation and in figure 16 for lever operated switchinstallation unless otherwise specified. Proceed asappropriate:
For switches which activate at the bottom of theactuator stroke, the inner cam (key 170; also seefigure 7) is used. Installation of the inner cam
requires removal of the actuator lever (key 27,figures 9 and 10). To remove the lever, refer to theChanging or Replacing Actuator Lever procedureand perform all applicable steps in the Disassemblyportion. Install the inner cam with machine screwsand retaining washers (keys 117 and 144). Note thatthe retaining washers help to keep all parts togetheras an assembly to ease installation. Reassemble theactuator and install the actuator on the valve body.
For switches which activate at the top of theactuator stroke, the outer cam (key 170; also seefigure 7) is used. If the valve body or other operatedequipment is mounted on the housing coverassembly side of the actuator, it will be necessary toremove the valve body and the mounting yoke.Refer to the Changing or Replacing Actuator Leverprocedure and perform all applicable steps in theDisassembly portion. Remove the housing coverassembly (key 33). Install the outer cam withmachine screws, spacers, and retaining washers(keys 119, 132, and 144). Note that the retainingwashers help to keep all parts together as anassembly to ease installation. Follow the steps in theInstallation section to reassemble the actuator andinstall the actuator on the valve body.
For actuators using a positioner, the positionercam (see figure 7) must be installed on the lever. Ifthe valve body or other operated equipment ismounted on the housing cover assembly side of theactuator, it will be necessary to remove the valvebody and the mounting yoke. Refer to the Changingor Replacing Actuator Lever procedure and performall applicable steps in the Disassembly portion.Remove the housing cover assembly (key 33).Install the cam on the lever with machine screws inthe orientation shown in figure 7 and in thepositioner instruction manual. Follow the steps in theInstallation section to reassemble the actuator andinstall the actuator on the valve body.
Installing Proximity SwitchesKey numbers referenced in the following proceduresare shown in figure 15 unless otherwise specified.
Switches Indicating Bottom of Stroke1. Apply inlet pressure to the diaphragm case (key1, figures 9 and 10) until the actuator is at the bottomof its stroke. Make sure that the lever (key 27,figures 9 and 10) is against the down position travelstop (see figure 3).
2. Install one 5/8-inch UNF jam nut (key 78) ontothe proximity switch (key 7). Screw the switch
assembly into the mounting cover (key 59, figures 9and 10) so that it is directly over the inner cam (referto figure 3).
3. Carefully screw the switch into the mountingcover until the electrical contacts close. Maintain aminimum of 0.5 mm (0.02 inch) clearance betweenthe switch and the cam.
4. Lock the switch in place by tightening the locknut(key 78) to the torque value in table 2. Whentightening the locknut, be careful not to turn theswitch and thereby reduce its clearance with thecam.
Switches Indicating Top of Stroke1. Make sure that the air supply to the diaphragmcase (key 1, figures 9 and 10) is totally vented andthe lever (key 27, figures 9 and 10) is against the upposition travel stop (see figure 3).
2. Install one 5/8-inch UNF jam nut (key 78) ontothe proximity switch (key 7). Screw the switchassembly into the mounting cover (key 59, figures 9and 10) so that it is directly over the outer cam (referto figure 3).
3. Carefully screw the switch into the mountingcover until the electrical contacts close. Maintain aminimum of 0.5 mm (0.02 inch) clearance betweenthe switch and the cam.
4. Lock the switch in place by tightening the locknut(key 78) to the torque value in table 2. Whentightening the locknut, be careful not to turn theswitch and thereby reduce its clearance with thecam.
Installing Lever-Operated SwitchRefer to figure 16 for the key numbers referenced inthe following procedures and for proper orientationof switches and switch mounting accessories.
Installing the Push Rod1. For Switches Indicating Bottom of Stroke,apply inlet pressure to the diaphragm case (key 1,figures 9 and 10) until the actuator is at the bottom ofits stroke. Make sure that the lever (key 27, figures 9and 10) is against the down position travel stop (seefigure 3).
For Switches Indicating Top of Stroke, make surethat the air supply to the diaphragm case (key 1,figures 9 and 10) is totally vented and the lever (key27, figures 9 and 10) is against the up position travelstop (key 8, figures 9 and 10).
2. For Switches Indicating Bottom of Stroke,install one jam nut (key 78) onto the push rod guide(key 169). Refer to figure 3 and screw the push rodguide into the mounting cover (key 59, figures 9 and10) so that it is directly over the inner cam.
For Switches Indicating Top of Stroke, install onejam nut (key 78) onto the push rod guide (key 169).Screw the push rod guide into the mounting cover(key 59, figures 9 and 10) so that it is directly overthe outer cam (refer to figure 3).
3. For both kinds of switches, insert the push rod(key 168) into the push rod guide with its headresting against the outer surface of the push rodguide.
4. Screw the push rod guide/push rod assembly inuntil the push rod contacts the cam (key 170).
5. Hold the push rod tightly against the push rodguide and screw the push rod guide into themounting cover until a gap of 6.4 to 6.8 mm (0.25 to0.27 inch) exists between the push rod head and thesurface of the push rod guide.
6. Lock the push rod guide in place by tightening thelocknut to the torque value in table 2. Be careful notto turn the push rod guide and thereby reduce itsclearance with the push rod head.
7. Install the boot (key 163) over the push rod andthe push rod guide.
Mounting Lever-Operated Switch andAdjustment1. If used, remove the cap screws and springadjuster cover (keys 21 and 85 for Type 1051, orkeys 21 and 117 for Type 1052).
2. Attach the switch mounting plate (key 1) at thislocation with cap screws (key 75). Tighten the capscrews to the torque value in table 2.
3. Install the levers onto the switch shafts so thatthey are parallel to the centerline of the switch whenthey trip.
4. Insert the round head carriage bolts (key 4) intothe switch mounting bracket (key 129). Mount thelimit switch onto the bracket using machine screwsand nuts (keys 8 and 9). Tighten the machinescrews to 2.8 N�m (5 lbf�ft).
5. Attach the switch/mounting bracket assembly tothe mounting plate using the nuts and washers (keys77 and 154).
6. Adjust the switch lever on the shaft so that itsroller is in the approximate center of the push rod.
7. With the actuator set at one end of its travel, slidethe appropriate switch/bracket assembly toward the
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
18
actuator until the roller on the switch lever is incontact with the push rod head and the switchcontacts close. Stroke the actuator to the oppositeend of its travel and repeat the adjustmentprocedure for the other switch.
Positioner Mounting1. Before installing the positioner, the positionercam must be installed on the lever (key 10, figures 9and 10). Refer to the Installing the Cam procedure.
2. Refer to the positioner instruction manual forset-up and calibration procedures.
Top-Mounted Handwheel
Key numbers used in this procedure are shown infigure 17 except where indicated.
The optional top-mounted handwheel can be usedas a manual actuator for intermittent service or as anadjustable up travel stop to limit full retraction of thediaphragm rod (key 10, figures 9 and 10).
The handwheel assembly is attached to a specialupper diaphragm casing (key 1, figures 9 and 10)with cap screws (key 141). A hex nut (key 137) locksthe handwheel in position. For field installation of ahandwheel, the special upper diaphragm case mustbe ordered as well as the handwheel.
Turning the handwheel (key 51) clockwise into theupper casing forces the pusher plate (key 135)against the diaphragm and diaphragm plate (keys 3and 4) to compress the spring (key 11, figures 9 and10) and move the diaphragm rod downward. Turningthe handwheel counter-clockwise allows the actuatorspring to move the diaphragm rod upward. If thevalve is push-down-to-close, full opening can berestricted by positioning the handwheel at thedesired position. If the valve is push-down-to-open,full closing of the valve ball or disc can be restrictedby use of the handwheel.
Instructions are given below for completedisassembly and assembly required for inspectionand parts replacement.
Disassembly
WARNING
To avoid personal injury from theprecompressed spring force thrustingthe upper diaphragm casing away fromthe actuator, relieve springcompression before diaphragm casingbolting is loosened.
1. Remove the upper diaphragm casing (key 1,figures 9 and 10) by following steps 1 through 5 ofthe disassembly portion of the Replacing Diaphragmprocedure.
2. Remove the cotter pin, hex nut, handwheel, andlocknut (keys 247, 54, 51, and 137). Unscrew thestem (key 133) out through the actuator end of thehandwheel body (key 142).
3. Remove cap screws (key 141), and separate thehandwheel assembly from the upper casing.
4. Check the condition of the O-rings (keys 138 and 139); replace them if necessary.
5. If it is necessary to remove the pusher plate orspacer (key 135 or 171), drive out the groove pin (key 140).
Assembly1. Before assembling, lubricate the thread of thestem (key 133) and the bearing surfaces of the stemand pusher plate (key 135) with Lubriplate MAG-1 orequivalent lubricant.
2. If the pusher plate or spacer was removed, attachthem to the stem and drive in a new groove pin (key140).
3. With the O-ring (key 138) in place, thread thestem into the handwheel assembly.
4. Attach the handwheel assembly to the upperdiaphragm casing (key 1, figures 9 and 10) with capscrews (key 141).
5. Install the locknut, handwheel, hex nut, and cotterpin (keys 137, 51, 54, and 247).
6. Install the diaphragm casing, making certain thewarning tag is in place on the casing flange.
7. Tighten the cap screws (key 5, figures 9 and 10)evenly in a criss-cross pattern (see table 2).
8. Adjust the initial set as described in the SpringCompression Adjustment procedure.
Figure 8. Type 1051 and 1052 Actuator Locking Mechanism
24B0391-AA6226/IL
Locking Mechanism
Installing the Locking MechanismTo add the locking mechanism to an existingactuator, purchase the required parts from Fisher.
1. Carefully review and complete the steps in theWarning at the beginning of the Maintenancesection to isolate the control valve and actuator.
2. Remove cap screws, spring adjustor cover, andcover plate (keys 21 & 60, 85 or 117, and 59).
3. Thread jam nut (key 128) all the way onto thethreaded bolt portion of the locking device beforethreading it into the cover (key 59).
4. After the bolt is threaded into the cover, drive thegroove pin (key 127) into the threaded bolt. So thelocking mechanism will not interfere with rotation ofthe lever (key 27), rotate the locking mechanismcounter-clockwise until it is stopped by the groovepin (key 127). Attach the cover to the actuator withcap screws (key 60).
5. Attach mounting plate (key 123) with cap screws(key 21).
6. Be sure the diaphragm rod is retracted fully. Thiswill be the locked position of the valve.
7. Screw the threaded bolt into the cover until itcontacts the actuator lever.
8. Rotate the locking device slightly until the hole inthe mounting plate (key 123) aligns with a hole in thelocking device.
9. Tighten the jam nut against the cover.
10. Insert the padlock (not furnished by Fisher) toconnect the mounting plate with the locking device.
Operating the Locking Mechanism
To Unlock the Actuator1. Remove the padlock. Loosen the jam nut (key128), and unscrew the threaded bolt until it isstopped by the groove pin (key 127) in the threadedbolt.
Note
For normal operation of the actuator,the threaded bolt must be unscrewedfar enough that the actuator lever willnot contact the bolt in normal actuatoroperation.
2. If you are going to leave the bolt threaded into thecover, lock it with the jam nut (key 128) so that itcannot be screwed into the cover and interfere withnormal actuator operation.
To Lock the Actuator1. Make sure the actuator diaphragm rod isretracted fully (the locked position of the valve). Fora push-down-to-close valve and actuator, the valvewill be fully open when locked. For apush-down-to-open valve and actuator, the valve willbe fully closed when locked.
2. Make sure the jam nut (key 128) is loose. Then,screw the threaded bolt into the cover until itcontacts the actuator lever.
3. Rotate the threaded bolt until one of the holes inthe locking disc (which is welded to the bolt) is in linewith the hole in the mounting plate (key 123).Tighten the jam nut against the cover.
4. Lock the plate and disc together with a padlock(not furnished by Fisher).
Note
Fisher does not assume responsibilityfor the selection, use, or maintenanceof any product. Responsibility forproper selection, use, andmaintenance of any Fisher productremains solely with the purchaser andend-user.
1051 & 1052 ActuatorInstruction Manual
Form 5620December 2002
20
APPLY LUB
Figure 9. Type 1051 Size 33 Actuator with F or G Mounting Adaptation
50B3577-E/DOC
Parts OrderingWhen corresponding with your Fisher sales officeabout this equipment, refer to the serial numberfound on the actuator nameplate.
Components that are not manufactured by Fisher,should not, under any circumstance, be used in anyFisher valve. The use of parts not manufactured byFisher may adversely affect the performance of thevalve as well as worker and workplace safety.
Parts KitsKey Description Part Number
Retrofit KitsKit provides parts to add a top-mounted handwheel. Kit number 1 includes the handwheel assembly only. Kit number 2 includes Kit number 1 and a new Upper Case (key 1) required to mount the handwheel assembly.Kit Number 1 28A1205X082Kit Number 2 28A1205X092
Parts List
Note
Part numbers are shown for recommended sparesonly. For part numbers not shown, contact yourFisher sales office.
Basic Actuator With F and G MountingAdaptations (figures 9 and 10)Key Description Part Number
Figure 10. Type 1052 Size 33 Actuator with F or G Mounting Adaptation50B3571-F/DOC
APPLY LUB
Key Description Part Number20 Housing, cast iron20A Housing Assembly21 Cap Screw, plated steel (2 req’d)22 Mounting Yoke, painted steel
(not included w/ H mounting adaptation)23 Cap Screw, plated steel (4 req’d)27 Lever, ductile iron28 Hex Cap Screw, plated steel31* Bushing, PTFE lined bronze (2 req’d) 12A9558X01233A Housing Cover34 Cap Screw, plated steel (4 req’d)35 Travel Indicator Scale, stainless steel36 Self Tapping Screw (not shown),
plated steel for use with standardindicator scale (2 req’d)
37 Travel Indicator, stainless steel(not used with manual actuator, PMV, or 3710 positioner)
38 Machine Screw, plated steel(2 req’d for use with key 37 travel indicator)
39 Cover Plate, plastic (not used with positioner)40 Machine Screw, plated steel (4 req’d)
(required for use with key 39 cover plate)41 Nameplate, stainless steel42 Drive Screw, plated steel (2 req’d)55 Vent Screen, zinc/stainless steel56 Warning Nameplate
Key Description Part Number59 Cover Plate, painted steel60 Cap Screw, plated steel (4 req’d)63 Washer, plated steel (4 req’d)71 For Type 1051 only
Cap Screw, plated steel72 For Type 1052 only
Thrust Washer, nylon (2 req’d)74 For Type 1052 only Spring Adjuster, cast iron74 For Type 1051 only Lubriplate Mag-176 For Type 1052 only78 For Type 1052 only, Cap Screw, plated steel79 For Type 1052 only, Washer, plated steel83 For Type 1051 only, Thrust Washer, nylon84 For Type 1051 only, Hex Jam Nut, plated steel (2 req’d)85 For Type 1051 only
Spring Adjuster Cover, painted steelnot used with lever-operated switches
86 Hex Jam Nut, plated steel (2 req’d), For Type 1052 only86 Washer, plated steel For Type 1051 only
117 For Type 1052 onlySpring Adjuster Cover, painted steelfor use without lever-operated switches
Figure 11. Parts Used for the H Mounting Adaptation
50B1581-CA3780-1/IL
NOTE: REQUIRES APPROPRIATE LEVER (KEY 27) FOR HMOUNTING ADAPTATION – SEE PARTS LIST.2. STYLE A MOUNTING SHOWN. FOR STYLE B, ASSEMBLE PARTS LISTED AND TRAVEL INDICATOR COMPONENTS ON OPPOSITE ENDS OF LEVER.
1
Figure 12. Standard and Reverse Constructions of the StubShaft Used for H Mounting Adaptations
50B1581-B/DOC
Key Description Part Number
Parts Used For H MountingAdaptations (figure 11)
Parts For Use With Type 1051 Actuators Only77 Stub Shaft, steel (1 req’d for valve mounting: 2 req’d for use
with manual actuator or wrench-operated extension)79 Pin, steel (1 req’d for each stub shaft)
Parts For Use With Type 1052 Actuators Only87 Stub Shaft, steel (1 req’d for valve
mounting; 2 req’d for use with manualactuator or wrench-operated extension)
89 Pin, steel (1 req’d for each stub shaft)
Figure 13. Parts Used for the J Mounting Adaptation
50B1584-CA3781-1/IL
NOTE: REQUIRES APPROPRIATE LEVER (KEY 27) FOR JMOUNTING ADAPTATION – SEE PARTS LIST.2. STYLE A MOUNTING SHOWN. FOR STYLE B, ASSEMBLE PARTS LISTED AND TRAVEL INDICATOR COMPONENTS ON OPPOSITE ENDS OF LEVER.
1
Key Description Part Number
Parts Used For J Mounting Adaptations(figure 13)
Parts For Use With Type 1051 Actuators Only44 Pin, steel (for coupler)79 Pin, steel (for stub shaft)80 Coupling, steel81* Woodruff key, steel
For 3/8, 1/2 inch valve shaft size F13576X0062For 5/8 inch valve shaft size F13577X0052
87 Stub shaft, steelParts For Use With Type 1052 Actuators Only89 Pin, steel (for stub shaft)90 Coupling, steel91* Woodruff key, steel
For 3/8, 1/2 inch valve shaft size F13576X0062For 5/8 inch valve shaft size F13577X0052
Fisher Marshalltown, Iowa 50158 USACernay 68700 France Sao Paulo 05424 BrazilSingapore 128461
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy,they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their useor applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Fisher does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Fisher product remains solely with the purchaser and end-user.
�Fisher Controls International LLC. 1986, 2002; All Rights Reserved Printed in USA
FIELDVUE and Fisher are marks owned by Fisher Controls International LLC, a business of Emerson Process Management. The Emersonlogo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.
