Emerson Fisher Vee Ball V150E Instruction Manual

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Instruction Manual

2052 Actuator

D103296X012

November 2011

Fisherr 2052 Diaphragm Rotary Actuator
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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 or DVC6020) . . . . . . . 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

W9425-2

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 Process Management sales office 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.

www.Fisher.com

Instruction Manual

2052 Actuator
November 2011

D103296X012

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.
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 4

Torque Output

See table 3

Actuator Temperature Capabilities(1)

-45 to 80_C (-50 to 176_F)

Operation

Field reversible between PDTC and PDTO; right- and left-hand mounting, any angle of orientation

Controller/Positioners Available

Size 1: 22.2 kg (49 lb)
Size 2: 54.4 kg (120 lb)
Size 3: 113 kg (250 lb)
DVC2000, DVC6020, DVC6030, DVC6200, 3610J, 3620J, 4190, C1

Accessories Available

846, 646, 2625, and 67C Series, switches, i2P-100, VBL, DXP, GO™

Handwheel

Top-mounted handwheel: Optional on Size 1 and 2 actuators only
Declutchable handwheel: Optional on Size 1, 2, and 3 actuators

Operational Lockout

Available for customer-supplied padlock to lock the actuator in the spring-fail position

Approximate Weight

1. The pressure/temperature limits in this manual should not be exceeded.

Table 2. Actuator and Shaft Size Availability
SHAFT SIZE

Table 3. Torque versus Actuator Size
OPERATING PRESSURE

ACTUATOR SIZE

Inches

1/2

available

not available

5/8

available

not available

3/4

available

2 barg (29 psig)(1)

4 barg (58 psig)(2)

Torque

NSm

lbfSin

NSm

available

1 (PDTO, PDTC)

25.5

226

51.2

lbfSin
453

105

930

210

1860

not available

available

2 (PDTO, PDTC)

1-1/4

not available

available

3 (PDTO)

327

2890

631

5583

1-1/2

not available

available

3 (PDTC)

280

2479

584

5173

1-3/4

not available

available

not available

available

Table 4. Pressure Connections
ACTUATOR
SIZE

ACTUATOR
SIZE AND
ACTION

PRESSURE CONNECTION
1/4 NPT

1/2 NPT

3/4 NPT

G 1/4
optional

standard

optional

not
available

standard

optional

not
available

optional

not
available

standard

optional

not
available

1. Operating pressure up to 3 barg (44 psig) is allowable for single spring construc
tion.
2. Operating pressure up to 5 barg (73 psig) is allowable for dual spring construction.

Instruction Manual

2052 Actuator

D103296X012

November 2011

Table 5. Fisher 2052 Actuator Mounting Styles
VALVE SERIES OR DESIGN

VALVE SERIES OR DESIGN
CV500
V500

DISK/BALL
ROTATION TO
CLOSE

A11, 8510B, 8532,
8560, 8580,
9500, and
Control-Disk
Valve

A
B

CW
CW

B
A

CCW
CCW

D
C

CW
CW

C
D

CW
CW

C
D

NA
NA

MOUNTING

ACTION(1)

BALL/PLUG
ROTATION TO
CLOSE

V150, V200 & V300

Right-Hand

PDTC
PDTO

CCW
CCW

Left-Hand

PDTC
PDTO

Left-Hand
(Optional)(2)

PDTC
PDTO

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

LEFT HAND MOUNTING

RIGHT HAND MOUNTING

VALVE
INLET

STYLE D SHOWN

STYLE B SHOWN

STYLE D

STYLE C

STYLE A

STYLE B

POSITION 1
STANDARD
2

4
3

POSITION 1
STANDARD
FLOW

2
3

4
FLOW

2
3

GE37285-B

Specifications
Specifications are shown in table 1 for 2052 actuators. Specifications for actuator operation are stamped on a metal
nameplate attached to the actuator.

Instruction Manual

2052 Actuator
November 2011

D103296X012

Table 6. Bolting Torque Requirements(1)
DESCRIPTION KEY NUMBER
Rod End Bearing Clamping Bolt
Torque , Key 16
End Plate to Housing Bolt
Torque, Key 4
Diaphragm Plate to Rod Bolt
Torque, Key 7
Casing Bolt Torque, Key 8
Housing to Yoke Bolt Torque,
Key 28
Lever-Spline Clamping Bolt
Torque, Key 15
Optional Lockout Kit Mounting
Bolt Torque, Key 53

TORQUE

ACTUATOR
SIZE

NSm

LbfSft

1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3

38
180
400
68
120
210
27
115
300
55
55
55
27
68
245
38
115
175
NA
88
340

28
130
295
50
90
155
20
85
220
40
40
40
20
50
180
28
85
130
NA
65
250

FASTENER LUBRICATION
None

None

Anti-Seize Lubricant

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.

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 4) 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

Instruction Manual
D103296X012

2052 Actuator
November 2011

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.

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.

Instruction Manual

2052 Actuator
November 2011

D103296X012

5. Refer to figure 2 and table 5 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
INDICATOR
ORIENTATION
FOR PDTO
TRAVEL INDICATOR
SCALE

INDICATOR
ORIENTATION
FOR PDTC

VIEW A

KEY 22
DOWN
TRAVEL
STOP

UP
TRAVEL
STOP

KEY 20

TRAVEL
INDICATOR

VIEW A

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.

Instruction Manual
D103296X012

2052 Actuator
November 2011

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.

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.
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.

Instruction Manual

2052 Actuator
November 2011

D103296X012

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

Instruction Manual
D103296X012

2052 Actuator
November 2011

contact your local Emerson Process Management 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). 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 Process Management 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).

2052 Actuator
November 2011

Instruction Manual
D103296X012

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.

Instruction Manual
D103296X012

2052 Actuator
November 2011

Changing or Replacing Actuator Lever
WARNING
Avoid personal injury or property damage. The end plate assembly (key 3) and lever (key 14) may only be removed after the
actuator spring compression forces are safely relieved. Refer to the instructions below.

Disassembly
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 Check with your process or safety engineer for any other hazards that may be present from exposure to process media.

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.

3. Loosen the cap screw (key 15).
4. Follow steps 2 through 10 in the Replacing Diaphragm Plate, Diaphragm Rod Assembly, and Spring(s) section.
5. Remove and inspect the lever (key 14). If the lever is worn or damaged, or if the actuator will be mounted to a valve
body requiring a different size lever, replace the lever.
6. Inspect the bushings located in the end plate (key 3) and housing (key 1) assemblies. If bushings are excessively
worn or damaged, remove them with a press. Press in new bushings so that they are flush with the exterior surfaces
of the actuator housing and the end plate assembly.

Assembly
1. Refer to figure 4 for the correct orientation of the lever during assembly.
2. If a cam-operated positioner is used, install the cam to the lever with the parts provided by the appropriate
instrument mounting kit. Be sure to observe the orientation shown in figure 4 and follow all procedures given in the
positioner instruction manual.

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November 2011

Instruction Manual
D103296X012

3. Insert the lever into the bushing in the actuator housing.
4. Fasten the rod end bearing diaphragm rod assembly to the lever using the cap screw (key 16) and nut (key 17) if
applicable. Tighten per table 6.
5. Install the end plate assembly (key 3).
6. 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.
7. Install the guide assembly (key 48) size 3 only.
8. 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.
9. 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.
10. Lubricate the socket head capscrew (key 7) and tighten per table 6.
11. Place the diaphragm (key 11) on the diaphragm plate (key 6), making certain it is properly centered.
12. 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).
13. Install the inlet piping to the top casing assembly.
14. Refer to the Actuator Mounting procedure and proceed as applicable:

Positioner Mounting (3610, DVC6020, or DVC6200)
1. Before installing the positioner, the positioner cam must be installed on the lever.
2. Refer to assembly step 2 in the previous section on Changing or Replacing Actuator Lever.
3. Refer to the positioner instruction manual for setup and calibration procedures.

Top-Mounted Handwheel (Size 1 and 2)
Key numbers used in this procedure are shown in figure 9 except where indicated.
The optional top-mounted handwheel can be used as a manual actuator for intermittent service. It is not to be used as
an adjustable travel stop. This is built into the housing.
The handwheel assembly is welded to a special top casing assembly (key 5, figure 9). A hex nut (key 43) locks the
handwheel in position. For field installation of a handwheel, the special upper diaphragm casing is supplied with the
handwheel.
Turning the handwheel (key 32) clockwise into the upper casing forces the pusher plate (key 36) against the
diaphragm and diaphragm plate (keys 11 and 6, figure 7) to compress the inner and outer springs (keys 12 and 13,
figure 7) and move the diaphragm rod assembly downward. Turning the handwheel counter-clockwise allows the
actuator spring(s) to move the diaphragm rod assembly upward.
Instructions are given below for complete disassembly and assembly required for inspection and parts replacement.

Disassembly
WARNING
To avoid personal injury from the precompressed spring force thrusting the upper diaphragm casing away from the
actuator, fully turn the handwheel counterclockwise.

Instruction Manual
D103296X012

2052 Actuator
November 2011

1. Perform steps 1 through 6 of the Replacing Diaphragm procedure.
2. Remove the cotter pin, hex nut, handwheel, and locknut (keys 34, 33, 32, and 43). Unscrew the stem (key 35) out
through the actuator end of the handwheel body (key 5).
3. Check the condition of the O-ring (key 44); replace if necessary.
4. If it is necessary to remove the pusher plate or spacer (key 36 or 42), drive out the groove pin (key 37).

Assembly
1. Before assembling, lubricate the thread of the stem (key 35) with anti-seize lubricant. Lubricate the bearing
surfaces of the stem and rounded end with lithium grease.
2. If the pusher plate or spacer was removed, attach them to the stem and drive in a new groove pin (key 37).
3. With the O-ring (key 44) in place, thread the stem into the handwheel assembly.
4. Install the locknut, handwheel, hex nut, and cotter pin (keys 43, 32, 33, and 34).

Note
Be sure to install the handwheel so that the arrow of operation on the top side coincides with the action of the actuator, as stated
on the nameplate. (The arrow should point clockwise for PDTO. The arrow should point counter-clockwise for PDTC.)

5. Install the top casing assembly, making certain the warning tag is in place on the casing flange.

Locking Mechanism
Refer to figures 5 or 6 for the appropriate size locking mechanism when installing or planning to operate the device.

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 Check with your process or safety engineer for any hazards that may be present from exposure to process media.

Installing the Size 1 Locking Mechanism
To add the locking mechanism (figure 5) to an existing actuator, purchase the required kit from Emerson Process
Management.

Instruction Manual

2052 Actuator
November 2011

D103296X012

1. Ensure the diaphragm rod assembly (key 10) is in the upward position and the lever (key 14) is against the up travel
stop (spring fail position).
2. Thread the supplied jam nut (key 40) all the way onto the threaded bolt portion of the mounting plate assembly.
3. Loosen the down travel stop hex nut (key 24) and remove the travel stop cap screw (key 23).
4. Remove the vent screen (key 47) from the threaded hole in the bottom of the actuator housing.
5. Secure the locking plate (key 39) to the bottom of the housing assembly by reinstalling the down travel stop (key
23) and hex nut (key 24). Ensure the clearance hole in the locking plate is aligned with the threaded hole in the
bottom of the housing.
6. Ensure the down travel stop is adjusted correctly to achieve the desired actuator rotational output.
7. Install the mounting plate assembly (key 38) by inserting it through the clearance hole in the locking plate and
threading it into the hole in the actuator housing.
Figure 5. Size 1 Locking Mechanism

LOCKING PLATE
(KEY 39)

CUSTOMER-SUPPLIED
LOCKING DEVICE

JAM NUT
(KEY 40)
MOUNTING PLATE ASSEMBLY
(KEY 38)

GE51941_A

Operating the Locking Mechanism (Size 1)
To Lock the Actuator
1. Screw the mounting plate assembly into the housing until it contacts the actuator lever.
2. Align the hole in the locking plate (key 39) with one of the holes in the disk of the mounting plate assembly.
3. Tighten the jam nut (key 40) against the locking plate.
4. Insert a padlock (not furnished by Emerson Process Management) to prevent the mounting plate assembly from
rotating.

Instruction Manual

2052 Actuator

D103296X012

November 2011

To Unlock the Actuator
1. Remove the padlock. Loosen the jam nut (key 40), and unscrew the threaded bolt until it no longer protrudes inside
the housing.

Note
Ensure the mounting plate assembly bolt is unthreaded far enough that the actuator lever will not contact the bolt during normal
actuator operation.

2. If the mounting plate assembly is to be left partially threaded into the housing, lock it with the jam nut (key 40) so
that it cannot be screwed further into the housing and interfere with normal actuator operation.
Figure 6. Size 2 and 3 Locking Mechanism

CUSTOMER SUPPLIED
LOCKING DEVICE

SIZE 3

PART ORIENTATION FOR SIZE 3 END-MOUNT INSTRUMENT

Installing the Size 2 and 3 Locking Mechanism
To add the locking mechanism (figure 6) to an existing actuator, purchase the required kit from Emerson Process
Management.
1. The actuator should be mounted to the valve body and both travel stops (key 23) properly positioned prior to
installing the locking mechanism.

2052 Actuator
November 2011

Instruction Manual
D103296X012

2. Ensure the actuator lever (key 14) is in the spring-fail position (against the up travel stop).
3. Assemble the lockout kit by positioning the locking shaft (key 50) within the center through-hole of the mounting
plate (key 51), as shown in figure 6. Insert the locking pin (key 52) through the center pinhole of the mounting plate
and through the pin hole in the locking shaft. Install the hairpin cotter pin (key 54) for retention.
4. If installing the lockout kit on an existing actuator, remove the travel indicator (key 21) and travel indicator scale
(key 19) from the actuator by loosening the appropriate screws.
5. Position the lockout kit against the actuator outboard end. The locking shaft will insert and engage the lever end
geometry.
Size 2 actuator: The standard size 2 lockout kit orientation shown in figure 6 will accommodate the use of
window-mount and end-mount digital valve controllers, positioners, and accessories. This orientation requires
removal of the locking pin in the direction of the bottom side of the actuator.
Size 3 actuator: For the window mounted DVC6200 digital valve controller, the size 3 lockout kit should be oriented
such that locking pin removal is in the direction of the bottom side of the actuator. This mounting plate position
provides necessary clearance with the integral supply pressure regulator. For the end-mount digital valve controller or
accessory option, the size 3 lockout kit should be oriented as shown in the inset picture of figure 6.
6. Loosely install the four flanged cap screws (key 53). Prior to tightening the fasteners, ensure the through-hole in the
mounting plate is centered around the outside diameter of the locking shaft (key 50). Rotate the assembly by hand
in the appropriate direction opposite of anticipated lever rotation to eliminate initial clearance among parts.
7. Tighten the cap screws (key 53) per the recommended torque values in table 6.
8. Install the travel indicator (key 21) and travel indicator scale (key 19) to the lockout parts as illustrated in figure 6.

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.

9. For normal actuator operation, remove the hairpin cotter pin (key 54) and locking pin (key 52) from the center
pinhole of the mounting plate and reinstall these parts in the second pinhole for storage.

Operating the Locking Mechanism (Size 2 & 3)
To Lock the Actuator
1. With the actuator lever (key 14) against the up travel stop (spring-fail position), insert the locking pin (key 52)
through the center pinhole of the mounting plate and through the pin hole in the locking shaft. Install the hairpin
cotter pin (key 54) for retention.
2. Install the customer-supplied locking device to further prevent removal of the locking pin.

To Unlock the Actuator
1. Remove the customer-supplied locking device.
2. Remove the hairpin cotter pin (key 54) and locking pin (key 52) from the center pinhole of the mounting plate and
reinstall these parts in the second pinhole for storage.

WARNING
To avoid personal injury or property damage, be aware the travel indicator scale (key 19) retains the locking shaft (key 50)
during normal actuator operation. Removal of the travel indicator scale could allow the locking shaft to fall out in certain
actuator orientations.

Instruction Manual

2052 Actuator

D103296X012

November 2011

Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, refer to the serial
number found on the actuator nameplate.

WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.

Parts List
Note
Part numbers are shown for recommended spares only. For part
numbers not shown, contact your Emerson Process Management sales
office.

Key

Description

1
1a*

Housing Assembly
Bushing
Size 1
Size 2
Size 3
Cover or Plug
End Plate Assembly
Bushing
Size 1
Size 2
Size 3
Cap Screw
Top Casing Assembly
Diaphragm Plate
Cap Screw
Cap Screw
Hex Nut
Diaphragm Rod Assembly
Diaphragm
Size 1
Size 2
Size 3
Spring, Inner
Spring, Outer

2
3
3a*

4
5
6
7
8
9
10
11*

12
13

*Recommended spare parts

Part Number

GE27672X012
GE32316X012
GE34956X012

GE28042X012
GE31917X012
GE34829X012

Key

Description

14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
42
43
44*

Lever
Cap Screw
Cap Screw
Hex Nut
Insert
Travel Indicator Scale
Self Tapping Screw
Travel Indicator
Machine Screw
Cap Screw
Hex Nut
Cover Plate
Cap Screw
Mounting Yoke
Cap Screw
Label
Nameplate
Drive Screw
Handwheel
Slotted Hex Nut
Cotter Pin
Screw
Pusher Assembly
Groove Pin
Warning Label
Washer
Hex Nut
O-Ring
Size 1
Size 2
Lubricant
Lubricant
Vent Screen
Guide Assembly
Lockout Kit
Size 1
Size 2
Size 3

45
46
47
48*
49

Part Number

1D237506992
1D237506992

GE51941X012
GE52968X012
GE52968X022

Instruction Manual

2052 Actuator
November 2011

D103296X012

Figure 7. Fisher 2052 Actuator Assembly

SIZE 3 ONLY

GE42779-C

APPLY LUB/SEALANT
PARTS NOT SHOWN: 2, 18

Instruction Manual

2052 Actuator

D103296X012

November 2011

Figure 8. Fisher 2052 Size 3 Actuator Assembly

SIZE 3 ONLY

APPLY LUB/SEALANT
GE52013-A

Instruction Manual

2052 Actuator
November 2011

D103296X012

Figure 9. Fisher 2052 Size 1 Handwheel Assembly

APPLY LUBRICANT

GE33241_A

Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher, Control-Disk, and GO are marks owned by one of the companies in the Emerson Process Management business division of Emerson Electric Co.
Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property
of their respective owners.
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 use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore

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