Emerson Fisher 2052 User manual

www.Fisher.com
Fisher™2052 Diaphragm Rotary Actuator
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Educational Services 4...........................
Specifications 4...............................
Installation 4..................................
Actuator Mounting 5..........................
Maintenance 7.................................
Replacing Diaphragm 8........................
Replacing Diaphragm Plate,
Diaphragm Rod Assembly, and Spring(s) 9......
Changing Or Replacing Actuator Lever 11.........
Positioner Mounting
(3610, DVC6020, or DVC6200) 12.............
Top‐Mounted Handwheel 12....................
Locking Mechanism 13.........................
Parts Ordering 17...............................
Parts List 17...................................
Figure 1. Fisher Control‐Disk™ Valve with
2052 Actuator and DVC6200 Digital Valve Controller
W9418-2
Introduction
Scope of Manual
This instruction manual includes installation, adjustment, operation, maintenance, and parts information for the
Fisher 2052 diaphragm rotary actuator (figure 1). Instructions for the control valve, positioner, manual actuator, and
other accessories are included in separate manuals.
Do not install, operate, or maintain a 2052 actuator without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson sales office or Local Business Partner before
proceeding.
Description
2052 spring‐and‐diaphragm rotary actuators are used on rotary‐shaft valve bodies for throttling or on‐off applications.
The 2052 may be used for on‐off service without a positioner, or it may be used for throttling service with a positioner,
depending on service conditions. The 2052 has an ISO 5211 mating interface that allows installation to non‐Fisher
valves. Refer to separate bulletins for valve and positioner information.
A top-mounted handwheel option is available for infrequent service as a manual actuator. For repeated or daily manual
operation, the unit should be equipped with a side-mounted declutchable 1078 manual actuator. Externally adjustable
travel stops are used to limit the degree of rotation at both ends of the actuator stroke.
The lever for the 2052 actuator is supported by bushings. The lever may be changed to accommodate valve bodies
with different size valve shafts.
Instruction Manual
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2052 Actuator
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Instruction Manual
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Table 1. Fisher 2052 Actuator Specifications
Specifications
Actuator Mounting Connections Splined shaft connection, ISO 5211 actuator‐to‐bracket connection
Size 1: F07, Size 2: F10, Size 3: F14
Actuator Sizes See table 2
Operating Pressure(1) See table 3
Maximum Diaphragm Casing Pressure Size 1, 2, and 3 Actuators: 5 barg (73 psig)
Pressure Connection See table 5
Torque Output See table 3
Actuator Temperature Capabilities(1) Standard: -45 to 80_C (-50 to 176_F)
Optional: -45 to 100_C (-50 to 212_F)(3) or -60 to 80_C (-76 to 176_F)(4)
Operation Field reversible between PDTC and PDTO; right‐ and left‐hand mounting, any angle of orientation
Approximate Weight
Size 1: 22.2 kg (49 lb)
Size 2: 54.4 kg (120 lb)
Size 3: 113 kg (250 lb)
Controller/Positioners Available DVC2000, DVC6020, DVC6030, DVC6200, 3610J, 3620J, 4190, C1
Adjustable Travel Stops Standard adjustable up and down stops capable of 30 degrees of adjustment per stop.
Accessories Available 846, 646, 2625, and 67C Series, switches, i2P-100, VBL, DXP, GO Switch™
Handwheel Top‐mounted handwheel: Optional on Size 1, 2, and 3 actuators
Declutchable handwheel: Optional on Size 1, 2, and 3 actuators
Operational Lockout(2) Available for customer‐supplied padlock to lock the actuator in the spring‐fail position
1. The pressure/temperature limits in this manual should not be exceeded. The current SIL certification for the 2052 actuator is only relevant for the standard temperature ratings shown.
2. Lockout and declutchable handwheel cannot be used together on size 2 and size 3 actuators.
3. Temperature range only applies when using silicone diaphragm material. Silicone diaphragm is not available with the top-mounted handwheel option.
4. Temperature range requires use of stainless steel bolting for yoke and travel stops. Not available with top-mounted handwheel.
Table 2. Actuator and Shaft Size Availability
SHAFT SIZE ACTUATOR SIZE
mm Inches 1 2 3
12.7 1/2 X
14.3 x 15.9 9/16 x 5/8 X X
15.9 5/8 X X
19.1 3/4 X X X
22.2 7/8 X X
25.4 1 X X
28.6 x 31.8 1-1/8 x 1-1/4 X X
31.8 1-1/4 X X
31.8 x 38.1 1-1/4 x 1-1/2 X
38.1 1-1/2 X
39.7 x 44.5 1-9/16 x 1-3/4 X
44.5 1-3/4 X
50.8 2 X
Table 3. Torque versus Actuator Size
ACTUATOR
SIZE AND
ACTION
OPERATING PRESSURE
2 barg (29 psig)(1) 3 barg (44 psig)(1) 4 barg (58 psig)(1) 4.7 barg (68 psig)(1)
Torque
NSm lbfSin NSm lbfSin NSm lbfSin NSm lbfSin
1 (PDTO)
1 (PDTC)
25.5
25.5
226
226
25.5
36.2
226
320
51.2
51.2
453
453
51.2
72.4
453
641
2 (PDTO)
2 (PDTC)
105
105
930
930
105
175
930
1550
210
210
1860
1860
210
320
1860
2840
3 (PDTO) 327 2890 327 2890 631 5580 631 5580
3 (PDTC) 280 2480 557 4930 584 5170 930 8230
1. Do not interpolate between operating pressures. Consult your Emerson sales office or Local Business Partner for assistance.

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Table 4. Fisher 2052 Actuator Mounting Styles
MOUNTING ACTION(1)
VALVE SERIES OR DESIGN VALVE SERIES OR DESIGN
BALL/PLUG
ROTATION TO
CLOSE
V150, V200 & V300 CV500
V500
DISK/BALL
ROTATION TO
CLOSE
A11, 8510B, 8532,
8560, 8580,
9500, and
Control‐Disk
Valve
Right‐Hand PDTC
PDTO
CCW
CCW
A
B
A
B
CW
CW
B
A
Left‐Hand PDTC
PDTO
CCW
CCW
D
C
D
C
CW
CW
C
D
Left‐Hand
(Optional)(2)
PDTC
PDTO
CW
CW
C
D
NA
NA
NA
NA
NA
NA
1. PDTC—Push‐down‐to‐close, and PDTO—Push‐down‐to‐open.
2. A left hand mounted ball will be required for the NPS 3 through 12 Vee-Ball Series B and the NPS 14 and 16, with or without attenuator.
Figure 2. Fisher 2052 Actuator Mounting Styles
STYLE A
STYLE C STYLE B STYLE D
FLOW
2
3
42
3
4
POSITION 1
STANDARD
POSITION 1
STANDARD
44
33
22
GE37285-B
FLOW
STYLE D SHOWN
LEFT HAND MOUNTING
VALVE
INLET
STYLE B SHOWN
VALVE
INLET
RIGHT HAND MOUNTING
Table 5. Pressure Connections
ACTUATOR
SIZE
PRESSURE CONNECTION
1/4 NPT 1/2 NPT 3/4 NPT G 1/4
1 standard optional not available optional
2 standard optional not available optional
3not available standard optional not available

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Educational Services
For information on available courses for Fisher 2052 actuators, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [email protected]
emerson.com/fishervalvetraining
Specifications
Specifications are shown in table 1 for 2052 actuators. Specifications for actuator operation are stamped on a metal
nameplate attached to the actuator.
Table 6. Bolting Torque Requirements(1)
DESCRIPTION KEY NUMBER ACTUATOR
SIZE
TORQUE FASTENER LUBRICATION
NSm LbfSft
Rod End Bearing Clamping Bolt
Torque , Key 16
1
2
3
38
180
400
28
130
295
None
End Plate to Housing Bolt
Torque, Key 4
1
2
3
68
120
210
50
90
155
None
Diaphragm Plate to Rod Bolt
Torque, Key 7
1
2
3
27
115
300
20
85
220
Anti-Seize Lubricant
Casing Bolt Torque, Key 8
1
2
3
55
55
55
40
40
40
None
Housing to Yoke Bolt Torque,
Key 28
1
2
3
27
68
245
20
50
180
None
Lever‐Spline Clamping Bolt
Torque, Key 15
1
2
3
38
115
175
28
85
130
None
Optional Lockout Kit Mounting
Bolt Torque, Key 53
1
2
3
NA
88
340
NA
65
250
None
1. Exceeding any torque requirements could damage the actuator and impair safe operation.
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations.
Check with your process or safety engineer for any other hazards that may be present from exposure to process media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
CAUTION
To avoid parts damage, do not apply pressure that exceeds the Maximum Diaphragm Casing Pressure in table 1.
Use pressure‐limiting or pressure‐relieving devices to prevent the Operating Pressure from exceeding the values shown in
table 3.

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The actuator, as it comes from the factory, is normally mounted on a valve body. If the actuator is shipped separately
or if it is necessary to mount the actuator on the valve, perform the procedures presented in the Actuator Mounting
section. Follow the procedures given in the valve instruction manual when installing the control valve in the pipeline.
If a positioner is ordered with the actuator, the pressure connection to the actuator is normally made at the factory. If
it is necessary to make this connection, run tubing of the appropriate size for the diaphragm casing pressure
connection (reference table 5) between the pressure connection and the instrument. Keep the length of tubing or
pipe as short as possible to avoid transmission lag in the control signal.
When the control valve is completely installed and connected to the controlling instrument, check to make sure that
the action is correct (air‐to‐open or air‐to‐close) and that the controlling instrument is properly configured for the
desired action. For successful operation, the diaphragm rod assembly, lever, and valve shaft must move freely in
response to changes in the loading pressure on the diaphragm.
Actuator Mounting
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Safely vent the power actuator loading pressure.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.
D Check with your process or safety engineer for any hazards that may be present from exposure to process media.
Use the following steps to mount the actuator or to change actuator mounting style or position.
Unless otherwise specified, key numbers referenced in the following procedures are shown in figure 7 for the 2052
actuator.
If the Actuator is mounted on a valve body and it is necessary to change mounting style or position, the actuator must
first be separated from the valve body.
1. Isolate the valve body from the process. Release process pressure and vent all actuator pressure.
2. Remove the cover or plug (key 2).
WARNING
To avoid personal injury and equipment damage from moving parts, keep fingers and tools clear while stroking the
actuator with the cover removed.

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3. Loosen the cap screw (key 15).
4. Separate the actuator from the valve body by removing the cap screws and nuts which secure the valve to the
mounting yoke (key 27). Proceed to step 5.
If the actuator is not mounted on a valve body ensure the up and down travel stops (see figure 3) are adjusted
correctly to achieve the desired actuator rotation. Use the travel indicator (key 21) and travel scale (key 19) as
reference.
Note
Once each travel stop is properly positioned, adequately tighten the hex nut (key 24) to lock the travel stop in place.
5. Refer to figure 2 and table 4 for available mounting styles and positions. The actuator is normally positioned
vertically with the valve in a horizontal pipeline.
6. Determine whether the actuator mounting yoke (key 27) will be mounted on the end plate assembly (key 3) side or
on the actuator housing boss side of the actuator. If the desired mounting position and style require moving the
mounting yoke (key 27) and travel indicator components to opposite sides of the actuator, remove the machine
screws (keys 20 and 22), the travel indicator scale (key 19), and the travel indicator (key 21). Remove the cap screws
(key 28) and the mounting yoke (key 27). Install the mounting yoke in the desired position (on the end plate
assembly or on the actuator housing boss). Tighten the mounting cap screws to the torque specified in table 6.
Install the travel indicator components on the opposite side of the actuator.
WARNING
To avoid personal injury or property damage, ensure the travel indicator is installed correctly to coincide with the desired
actuator action. Refer to figure 3 for more information.
Figure 3. Fisher 2052 Actuator Travel Stops and Travel Indication
TRAVEL INDICATOR
SCALE
UP
TRAVEL
STOP
DOWN
TRAVEL
STOP
KEY 22
KEY 20 TRAVEL
INDICATOR
INDICATOR
ORIENTATION
FOR PDTC
INDICATOR
ORIENTATION
FOR PDTO
VIEW A
VIEW A

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7. 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 or disk should be in the fully open position.
For push‐down‐to‐open action, the valve ball or disk should be in the fully closed position (see the valve body
instruction manual).
8. Make sure that the index markings on the valve shaft are properly aligned with either the markings on the lever or
the travel indicator scale mounting holes. Slide the valve shaft into the lever. (See figure 4 for one possible
orientation.) Install the valve mounting cap screws and nuts. Tighten to the torque value given in the appropriate
valve body instruction manual.
9. Ensure all end play in the valve shaft is removed by directing the valve shaft and control element toward the
actuator as much as possible.
10. Tighten the socket head cap screw (key 15) which compresses the splined lever connection to the valve shaft (see
table 6). Install the cover or plug (key 2) into the access hole in the housing.
CAUTION
When adjusting the travel stop for the closed position of the valve ball or disk, refer to the appropriate valve instruction
manual for detailed procedures. Undertravel or overtravel at the closed position may result in poor valve performance
and/or damage to the equipment.
Over-rotation of the lever could result in the diaphragm stroking to the point where the diaphragm seals off against the air
signal connection. This could prevent an air signal from being able to stroke the valve.
11. Adjust the up travel stop (see figure 3) so that the valve ball or disk is in the desired position. When adjusting the
up travel stop, ensure the stop is not backed out too far, causing the lever to over-rotate. Over-rotation of the lever
may cause damage to valve components. Avoid over-rotation by adjusting the up travel stop so that the travel
indicator screws (key 22) align with the travel scale screws (key 20). See figure 3.
12. Stroke the actuator and adjust the down travel stop so that the valve ball or disk is in the desired position.
Note
Once each travel stop is properly positioned, adequately tighten the hex nut (key 24) to lock the travel stop in place.
13. Make sure that the travel indicator pointer matches the ball or disk position. Remove and install in the proper
position if necessary.
14. Refer to the table of contents for accessory installation procedures.
Maintenance
Actuator parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of
inspection and replacement depends upon the severity of service conditions. Instructions are given below for
disassembly and assembly of parts. Key numbers referenced in the following steps are shown in figure 7 for the 2052,
except as listed below or otherwise specified in the procedures.
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.

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D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Safely vent the power actuator loading pressure.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Check with your process or safety engineer for any hazards that may be present from exposure to process media.
Replacing Diaphragm
Isolate the valve body from the process. Release process pressure and vent all actuator pressure.
Disassembly
1. Remove the supply tubing or pipe from the top casing assembly (key 5).
WARNING
To avoid personal injury from precompressed spring force suddenly thrusting parts away from the actuator, spring
compression must first be relieved. Closely follow the instructions below.
Figure 4. Orientation of the Fisher 2052 Actuator Lever into the Housing and Aligning the Actuator to the Valve Shaft
Markings
UP TRAVEL STOP
2. Loosen, but do not remove, all casing cap screws and hex nuts (keys 8 and 9). Ensure there is no spring force to the
top casing assembly (key 5). If spring force is detected against the top casing assembly, ensure the up travel stop
cap screw (key 23) is adjusted correctly to prevent over-rotation of the lever (key 14). Refer to figure 3. The travel
indicator screws (key 22) in the end of the lever should be in alignment with the travel scale screws (key 20). If the
up travel stop is confirmed to be adjusted correctly and force is still detected against the top casing assembly,
contact your local Emerson Automation Solutions Instrument and Valves Service Center. Alternatively, replace two
oppositely located casing cap screws (key 8) with 100 mm (4 inch) long fully threaded M10 cap screws of ISO 898-1

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Property Class 8.8 material or equivalent. Loosen the nuts (key 9) on the two fasteners in an equivalent manner to
relieve spring force.
3. Carefully remove all cap screws and hex nuts (keys 8 and 9) from the top casing assembly. The spring forces are
retained by the diaphragm rod assembly (key 10), allowing quick removal of the pressure retaining components.
4. Remove the top casing assembly and the diaphragm (key 11).
5. Inspect the diaphragm plate (key 6). If the diaphragm plate is damaged or if further disassembly of the actuator is
required, proceed to the Replacing Diaphragm Plate, Diaphragm Rod Assembly, and Spring(s) procedure.
6. Inspect the diaphragm and replace if necessary.
Assembly
1. Place the diaphragm (key 11) on the diaphragm plate (key 6), making certain that it is properly centered.
2. Observe the correct position of the loading connection fitting and install the top casing assembly (key 5). Replace
the cap screws and nuts (keys 8 and 9) which secure the top casing assembly to the actuator housing. Tighten the
nuts in an alternating fashion (see table 6).
3. Install the inlet piping to the top casing assembly.
Replacing Diaphragm Plate, Diaphragm Rod Assembly, and Spring(s)
Isolate the valve body from the process. Release process pressure and vent all actuator pressure.
Disassembly
1. Remove the supply tubing or pipe from the top casing assembly (key 5).
WARNING
To avoid personal injury from precompressed spring force suddenly thrusting parts away from the actuator, spring
compression must first be relieved. Closely follow the instructions below.
2. Loosen, but do not remove, all casing cap screws and hex nuts (keys 8 and 9). Ensure there is no spring force to the
top casing assembly (key 5). If spring force is detected against the top casing assembly, ensure the up travel stop
cap screw (key 23) is adjusted correctly to prevent over-rotation of the lever (key 14). Refer to figure 3. The travel
indicator screws (key 22) in the end of the lever should be in alignment with the travel scale screws (key 20). If the
up travel stop is confirmed to be adjusted correctly and force is still detected against the top casing assembly,
contact your local Emerson Instrument and Valves Service Center. Alternatively, replace two oppositely located
casing cap screws (key 8) with 100 mm (4 inch) long fully threaded M10 cap screws of ISO 898-1 Property Class 8.8
material or equivalent. Loosen the nuts (key 9) on the two fasteners in an equivalent manner to relieve spring force.
3. Carefully remove all cap screws and hex nuts (keys 8 and 9) from the top casing assembly. The spring forces are
retained by the diaphragm rod assembly (key 10), allowing quick removal of the pressure retaining components.
4. Remove the top casing assembly and the diaphragm (key 11).
5. Inspect the diaphragm plate (key 6).
a. To relieve spring compression, using a hex wrench, unscrew and remove the socket head cap screw (key 7) which
secures the diaphragm plate (key 6) to the diaphragm rod assembly (key 10). Remove the diaphragm plate.
6. Remove the spring (key 13) or springs (keys 12 and 13).

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7. The guide assembly (key 48) may be removed for inspection (size 3 only).
Note
At this stage of disassembly, it may be determined that further disassembly is not necessary. If separation of the diaphragm rod
assembly from the lever is not warranted, proceed to the Assembly portion within this section of the procedure.
8. To gain access to the cap screw (key 16) which secures the diaphragm rod assembly to the lever, the end plate
assembly (key 3) must be removed. Before the end plate assembly can be removed, one of the following
procedures must be performed. Proceed as appropriate:
D For actuators with valve bodies mounted on the end plate assembly (key 3) side of the actuator, the actuator must
be separated from the valve body. Perform steps 1 through 4 of the Actuator Mounting section, remove the
mounting yoke (key 27), and then return to step 9 of this section.
D For actuators with valve bodies mounted on the actuator housing boss side of the actuator [opposite of the
endplate (key 3)], remove the travel indicator pointer (key 21). Proceed to step 9.
9. Remove the socket head cap screws (key 4) and the end plate assembly (key 3).
10. Remove the cap screw (key 16) and nut (key 17) if applicable (size 3 only), that secures the actuator lever (key 14)
to the diaphragm rod assembly (key 10). Remove the diaphragm rod assembly.
11. Inspect all parts and replace if necessary.
12. If total disassembly of the actuator is required, or if the actuator will be assembled for use with a valve body with a
different valve shaft diameter, proceed to the Changing or Replacing Actuator Lever procedure.
Assembly
1. Fasten the diaphragm rod assembly (key 10) to the lever using the cap screw (key 16) and nut (key 17) if applicable.
Tighten per table 6.
2. Install the housing end plate (key 3).
3. Adjust the travel stop bolts to the correct position so that the travel indicator screws (key 22) align with the travel
scale screws (key 20). See figure 3.
4. Install the guide assembly (key 48 - size 3 only).
5. Install the spring(s). The outer (larger diameter) spring is standard for the single spring size 1 & 2 constructions. The
inner spring is standard for the single spring size 3 construction.
6. Place the diaphragm plate (key 6) onto the spring(s). It is important that the springs be properly seated in their
respective counterbores on the bottom side of the plate. If necessary, push or pull the diaphragm plate toward
center to ensure the springs are engaged into their respective seats.
7. Lubricate the socket head capscrew (key 7) and tighten per table 6.
8. Place the diaphragm (key 11) on the diaphragm plate (key 6), making certain that it is properly centered.
9. Observe the correct position of the loading connection fitting and install the top casing assembly (key 5). Replace
the cap screws and nuts (keys 8 and 9) which secure the top casing assembly to the actuator housing. Tighten the
nuts in an alternating fashion (see table 6).
10. Install the inlet piping to the top casing assembly.
11. Install the travel indicator (key 19) if removed.
12. If the actuator was removed from the valve body, refer to the appropriate section in the Actuator Mounting
procedure and proceed as applicable.