Emerson Fisher 1079 Installation Instructions

Instruction Manual

D500208X012

1079 Manual Actuator

Fisherr 1079 Declutchable Manual Actuator

October 2012

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 2.................................

Specifications 2...............................

Educational Services 2.........................

Installation 3..................................

Installing the Manual Actuator 4.................

Operation 5...................................

Engaging and Disengaging the Manual Actuator 5..

Engaging the Manual Actuator 5.............

Disengaging the Manual Actuator 5..........

Maintenance 6.................................

Lubrication 10................................

Parts Ordering 11...............................

Parts List 11...................................

Manual Actuator Assembly 11...................

Introduction

Scope of Manual

Figure 1. Fisher 1079 Manual Actuator Mounted on a
Hytork Actuator and A41 Double D Valve

W6214

This instruction manual includes installation, operation, and maintenance information for the Fisher 1079
declutchable manual actuator. Refer to separate instruction manuals for instructions covering the Hytork actuator and
the control valve.

Do not install, operate, or maintain a 1079 manual 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.

www.Fisher.com

1079 Manual Actuator

October 2012

Table 1. Specifications

Instruction Manual

D500208X012

Available Configurations

Direct acting; see Handwheel Rotation

Manual Actuator Sizes

See tables 2, 3, and 4

PowerActuatorCompatibility

Compatible with all sizes of Hytork actuator; see
tables 2, 3, and 4

Maximum Torque Output

See tables 2, 3, and 4

Wheel-Rim Force

See tables 2, 3, and 4

Handwheel Rotation

Clockwise handwheel rotation closes valve (produces
clockwise valve shaft rotation; as viewed from the
actuator end of the shaft)

Standard Mounting Positions (see figure 2)

J Standard mounting is with the input shaft
perpendicular to the Hytork piston travel, with the
handwheel opposite the actuator supply connections;
J Optional mounting is with the handwheel on the
same side as the Hytork actuator supply connections.

Approximate Weight without Handwheel

Size AAA: 7.3 kg (16 lb)
Size AA: 10 kg (22 lb)
Size A: 14 kg (31 lb)
Size B: 16 kg (35 lb)
Size C: 24 kg (52 lb)
Size D: 33 kg (72 lb)

Handwheel Weight

6-inch: 1.0 kg (2.25 lb)
8-inch: 2.0 kg (4.50 lb)
12-inch: 4.0 kg (8.75 lb)
24-inch: 5.4 kg (12.00 lb)
30-inch: 6.7 kg (14.75 lb)
36-inch: 7.8 kg (17.25 lb)

Description

The 1079 manual actuator, shown in figure 1, is a declutchable unit for manual operation of keyed or square shaft
control valves and equipment that use a Hytork actuator. The 1079 manual actuator mounts directly on the Hytork
actuator and can be engaged to allow manual operation of the valve when the power actuator is not in use or
disengaged to allow automatic operation of the valve by the power actuator. The mechanism used allows manual
actuator engagement at any point of power actuator rotation.

Specifications

The 1079 manual actuator specifications are given in table 1.

Educational Services

For information on available courses for 1079 manual actuators,aswellasavarietyof other products, contact:

Emerson Process Management
Educational Services, Registration
P.O. Box 190; 301 S. 1
Marshalltown, IA 50158-2823
Phone: [phone] or
Phone: [phone]
FAX: [phone]
e-mail: [e-mail]

st

Ave.

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Instruction Manual

D500208X012

1079 Manual Actuator

October 2012

Installation

WARNING

Always wear protective gloves, clothing, and eyewear when performing any installation operations.

To avoid personal injury or property damage resulting from the sudden release of pressure, do not install the valve
assembly where service conditions could exceed the limits given on the valve and actuator nameplates. Use
pressure-relieving devices as required by accepted industry, local, state, or Federal codes, and good engineering practices.

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.

The 1079 manual actuator is normally shipped mounted on the Hytork actuator. If the manual actuator is shipped
separately for installation on the Hytork actuator, or if the manual actuator was removed for maintenance, mount the
manual actuator by following the instructions in this section.

Field conversion of the Hytork actuator for use with the 1079 manual actuator requires fastening a mounting plate,
included with the manual actuator, to the Hytork actuator. The 1079 actuator is installed between the valve and the
Hytork actuator. Figure 2 shows the manual actuator standard and optional mounting positions. Typically the manual
actuator is mounted with the input shaft perpendicular to the power actuator piston travel. However, the manual
actuator can be mounted in any of four positions, provided there is sufficient clearance between the handwheel and
the power actuator end caps. Fasten the mounting plate to the power actuator with the four mounting bolts provided
withthemanualactuator.Donotexceedthetorquevaluesgivenintable5.

Figure 2. Fisher 1079 Actuator Mounting Positions

STANDARD
MOUNTING
POSITION

HYTORK ACTUATOR
SUPPLY CONNECTIONS

OPTIONAL
MOUNTING POSITION

A6186

SEAL RETAINER
SIDE OF VALVE

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1079 Manual Actuator

October 2012

Instruction Manual

D500208X012

Installing the Manual Actuator

WARNING

Refer to the WARNING at the beginning of the Maintenance section in this instruction manual.

CAUTION

Undertravel or overtravel of the valve disk, especially at the closed position, may result in poor valve performance and/or
damage to the equipment. Make certain that the power actuator travel stops are properly set before installing and
adjusting the manual actuator. Refer to the instruction manuals for the valve and the power actuator for information about
setting travel stops.

1. Isolatethecontrolvalvefromthelinepressure,releasepressure from both sides of the valve body, and drain the

process media from both sides of the valve. Also shut off all pressure lines to the power actuator and release all
pressure from the power actuator. Use lock-out procedures to be sure that the above measures stay in effect while
you work on the equipment.

2. Make certain that the power actuator travel stops have been properly set.

3. For spring-return power actuators, allow the power actuator to remain in the position where the spring is relaxed.

For double-acting power actuators, apply supply pressure as appropriate to position the valve disk in either the
open or closed position.

4. Note whether the valve disk is in the open or closed position.

5. Engage the handwheel on the manual actuator. See the Engaging and Disengaging the Manual Actuator section in

this manual for instructions. Perform one or the other of the following procedures.

D If the valve disk is in the closed position: Rotate the handwheel clockwise until it stops.

D If the valve disk is in the open position: Rotate the handwheel counterclockwise until it stops.

6. Disengage the manual actuator.

7. Slide the manual actuator shaft into the power actuator.

8. Rotate either the manual actuator or the power actuator slightly so that the mounting holes on the manual

actuator align with the mounting holes in the mounting plate on the power actuator.

9. Fasten the manual actuator to the power actuator with the bolts, lockwashers, and nuts provided.

10. Install the power actuator and manual actuator assembly on the valve as described in the installation section of

the power actuator instruction manual.

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Instruction Manual

D500208X012

1079 Manual Actuator

October 2012

Operation

After the actuator and control valve assembly are installed, the manual actuator is ready for operation.

CAUTION

Applying too much torque to the actuator and valve parts could cause damage to the parts. To avoid such damage, do not
exceed the maximum allowable torques listed in table 2, 3, or 4 or any other torque limitation of internal valve parts. Also,
do not use wrenches or other devices on the handwheel or handwheel shaft to increase operating force.

If the force required to rotate the handwheel exceeds the wheel-rim force listed in table 2, 3, or 4, refer to the
maintenance procedures.

Engaging and Disengaging the Manual Actuator

WARNING

Refer to the WARNING at the beginning of the Maintenance section in this instruction manual.

Engaging the Manual Actuator

1. Shut off supply pressure to the power actuator.

2. Pull the ring on the detent mechanism to unlock the lever. Move the lever into the engaged position until it is

against the stop pin and locked in position by the detent mechanism.

3. If applicable, open the power actuator bypass valve.

Disengaging the Manual Actuator

CAUTION

Disengaging the manual actuator when forces such as spring compression, cylinder pressure, and dynamic torque are
present may cause sudden, extreme movement of all control valve components. This can result in damage to equipment
and violent disturbance of the process. Before disengaging the manual actuator, approximate system balance should be
achieved. Take appropriate steps to ensure that the return to automatic operation will not result in a extreme repositioning
of control valve components.

1. Before disengaging the manual actuator, approximate system balance should be achieved. The system is in balance

when the actual valve disk position is approximately the same as the position requested by the automatic control
system. Under balanced system conditions, the manual actuator disengaging lever moves freely without use of
excessive force. If after releasing the detent mechanism, the lever does not move freely toward the disengaged
position, some system force is causing an imbalance. A forced return to automatic operation under these
conditions can cause serious damage to the equipment and violent disturbance of the process.

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1079 Manual Actuator

October 2012

Instruction Manual

D500208X012

2. If possible, determine whether the automatic control system is tending to open or close the valve disk, and rotate

the handwheel in the appropriate direction until friction in the manual operator is reduced and the lever can be
easily moved by hand. As an alternate approach, local manipulation of the supply pressure to the power actuator
may bring the set point of the automatic system closer to the actual valve disk position.

3. If a smooth transition from manual to automatic operation cannot be ensured, isolate the valve from the process.

Position the manual actuator so that it matches the position of the disk when no supply pressure is applied to the
power actuator.

4. Pull the ring on the detent mechanism to unlock the lever. Push the lever into the disengaged position until it is

against the stop pin and locked in position by the detent mechanism.

5. Close the bypass valve and return supply pressure to the power actuator.

Maintenance

WARNING

Avoid personal injury 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 to avoid personal

injury.

D Disconnect any operating lines providing air pressure, electric power, or a control signal to the power 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 Vent the power actuator loading pressure and relieve any actuator spring precompression.

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, or when
loosening the packing box pipe plug.

D Check with your process or safety engineer for any additional measures that must be taken to protect against process

media.

If the force required to rotate the handwheel exceeds the wheel-rim force listed in table 2, 3, or 4, check for the
following conditions:

D Insufficient lubrication

D Seized actuator parts

D Excessive pressure drop across the valve, or

D Obstruction to the valve disk rotation.

If the manual actuator does not seem to control the process fluid, the worm or drive sleeve gear teeth may be broken,
the handwheel pin may be sheared, or the internal power actuator or valve parts may be broken. Purchase a
replacement manual actuator if necessary. Refer to the power actuator and valve instruction manuals if power
actuator or valve maintenance is needed.

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Instruction Manual

D500208X012

1079 Manual Actuator

October 2012

Table2.ActuatorSizeSelectionandSpecifications for Keyed Shaft Valves (Model A31A)

MAXIMUM

ALLOWABLE

TORQUE

245
271

129
245

542
542
542
542
542

129
245
671
834
926
926
926

671
834

927
1171
1233
1582
1582
1582
1582

671

834

927
1171
1233
2203

2530
2568
2712

927
1171
1233
2203

2530
2568

4067
4067

(2)

2165

2400

1145
2165

4800
4800
4800
4800
4800

1145
2165
5941

7383
8200
8200
8200

5941

7383

8205
10,360
10,911

14,000
14,000
14,000
14,000

5941

7383

8205
10,360
10,911
19,494

22,396
22,728

24,000

8205
10,360
10,911
19,494

22,396
22,728

36,000
36,000

WHEEL-RIM FORCE FOR

MAXIMUM TORQUE

(3)

267
298

151
298

(3)
(3)
(3)
(3)
(3)

418
418
418
418
418

44
80

222

(3)
(3)
(3)

276
302
302
302

182
227
254
320
338

(3)

431

(3)

431

(3)

431

(3)

431

138
169
187
236
249
445

409
418

(3)

440
160

200
209
378

347
351

(3)

463

(3)

463

ACTUATOR

SIZE

HYTORK

ACTUATOR

SIZE

GEAR

RATIO

HANDWHEEL

DIAMETER

mm Inches mm Inches NSm lbfSin N lbf

VALVE SHAFT

DIAMETER

(1)

203 8 14.3 0.5625 129 1145 214 48

AAA 70 thru 280 24:1

305 12

203 8

AA 70 thru 280 24:1

305 12

A 680A 40:1 610 24

B 1125 40:1 610 24

610 24

C 1370 54:1

762 30

610 24

D 2585 & 4580 64:1

762 30

914 36

1. Shaft diameter at the keyway.

2. Unless otherwisenoted, torque is limited by S17400 stainless steel (17-4PH H1025) shaft material at 38_C (100_F). For other shaft materials, consult your Emerson Process Management
sales office.

3. Maximum manual actuator output.

4. NPS 12 CL150 A31A and NPS 8CL300 A31A.

17.5

23.8

14.3

17.5

23.8

28.6

30.2

31.8

41.3

14.3

17.5

23.8

28.6

30.2

31.8

41.3

23.8

28.6

31.8

30.2

31.8

38.1

41.3

44.5

47.6

23.8

28.6

31.8

30.2

31.8

38.1

41.3

44.5

47.6

31.8

30.2

31.8

38.1

41.3

44.5

47.6

57.2

0.6875

0.9375

0.5625

0.6875

0.9375

1.125

1.1875

1.25

1.625

0.5625

0.6875

0.9375

1.125

1.1875

1.25

1.625

0.9375

1.125

1.25

1.1875

1.25

1.5

1.625

1.75

1.875

0.9375

1.125

1.25

1.1875

1.25

1.5

1.625

1.75

1.875

1.25

1.1875

1.25

1.5

1.625

1.75

1.875

2.25

(4)

(4)(5)

(4)

(5)

(4)

(5)

(4)

(5)

60
67

34
64

94
94
94
94
94

10
18
50
62
68
68
68

41
51
57
72
76
97
97
97
97

31
38
42
53
56

100

92
94
99

36
45
47
85

78
79

104
104

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1079 Manual Actuator

Instruction Manual

October 2012

Table3.ActuatorSizeSelectionandSpecifications for Valves (Fisher A41)

ACTUATOR

SIZE

HYTORK

ACTUATOR

SIZE

GEAR

RATIO

HANDWHEEL DIAMETER

mm Inches mm Inches NSm lbfSin N lbf

152 6

VALVE SHAFT

DIAMETER

12.7

15.9

(1)

0.500

0.625

203 8 15.9 0.625 138 1225 229 51

AAA 70 thru 280 24:1

305 12 15.9 0.625 138 1225 152 34

152 6

12.7

15.9

0.500

0.625

203 8 19.1 0.750 240 2120 392 88

203 8

AA 70 thru 280 24:1

305 12

A 680A 40:1 610 24

B 1125 40:1 610 24

C 1370 54:1

610 24

19.1

25.4

31.8

31.8

38.1

19.1

25.4

31.8

38.1

31.8

38.1

44.5

31.8

38.1

0.750

1.000

1.250

1.250

1.500

0.750

1.000

1.250

1.500

1.250

1.500

1.750

1.250

1.500

762 30 44.5 1.750 2658 23524 433 97

D

1. Shaft diameter at packing box.

2. Unless otherwisenoted, torque is limited by S17400 (17-4 PH H1025) stainless steelshaft. For other shaft materials, contact your Emerson Process Management sales office.

3. Maximum manual actuator output. For AAA, C , and D, the maximum output is 2400, 24000, and 36000 in-lb,respectively.

2585 &

4580

64:1

610 24

762 30 44.5 1.750 2658 23524 365 82

31.8

38.1

1.250

1.500

MAXIMUM ALLOWABLE

58

138

58

138

240
468
542

542
542

240
468
926
926

1110
1356
1582

1110
1356

1110
1356

TORQUE

(2)

515

1225

515

1225

2120
4140

4800
4800

4800

2120
4140

8200
8200

9820

12000

14,000

9820

12000

9820

12000

(3)

(3)
(3)

(3)
(3)

(3)

WHEEL-RIM FORCE FOR

MAXIMUM TORQUE

127
305

127
305

280
546
629

418
418

78
153
303
303

303
371
431

227
278

190
231

D500208X012

29
69

29
69

63
123
141

94

94

18

34

68

68

68

83

97

51

63

43

52

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Instruction Manual

D500208X012

1079 Manual Actuator

October 2012

Table4.ActuatorSizeSelectionandSpecifications for Square Shaft Valves (Fisher A11)

ACTUATOR

SIZE

HYTORK

ACTUATOR

SIZE

AAA 70 thru 280 24:1

GEAR

RATIO

HANDWHEEL DIAMETER

mm Inches mm Inches NSm lbfSin N lbf

203 8 10.3 0.40625 89 790 147 33
305 12 15.9 0.625 271 2400

VALVE SHAFT

DIAMETER

(1)

203 8 10.3 0.40625 89 790 102 23

AA 70 thru 280 24:1

305 12

A 680A 40:1 610 24

B 1125 40:1 610 24

610 24

C 1370 54:1

762 30

D

2585 &

4580

64:1

610 24

914 36

1. Shaft diameter at square connection.

2. Unless otherwisenoted, torque is limited by S17400 stainless steel (17-4 PH H1025) shaft material at 38_C (100_F). For other shaft materials, consult yourEmerson Process Management
sales office.

3. Maximum manual actuator output.

15.9

22.2

15.9

22.2

25.4

15.9

22.2

25.4

34.9

34.9

15.9

22.2

25.4

34.9

34.9

15.9

22.2

25.4

34.9

34.9

0.625

0.875

0.625

0.875
1

0.625

0.875
1

1.375

1.375

0.625

0.875
1

1.375

1.375

0.625

0.875
1

1.375

1.375

MAXIMUM ALLOWABLE

318
542

318
782
926

318

782
1351
1582
1582

318

782
1351

2712
2712

318

782
1351

3520
3520

TORQUE

(2)

2813

4800

2813
6922

8200

2813
6922

11,956
14,000
14,000

2813
6922

11,956
24,000

24,000

2813
6922

11,956

31,157

31,157

(3)

(3)

(3)

(3)
(3)

(3)
(3)

WHEEL-RIM FORCE FOR

MAXIMUM TORQUE

298 67

245
418

102
254
302

85
214
369
431
431

67
160
276

440
440

53
133
231

400
400

55
94

23
57
68

19
48
83
97
97

15
36
62

99
99

12
30
52

90
90

Table 5. Fisher 1079 Manual Actuator Mounting Plate to Hytork Actuator Bolt Torque

HYTORK ACTUATOR MODEL

NUMBER

(1)

ACTUATOR MOUNTING HOLE SIZE

45 0.25-20 UNC 5 4

70
130
185
280

425A
680A

1125
1370

2585
4580

1. Applies to both double-acting and spring-return models.

NSm LbfSft

0.625-18 UNC 11 8

0.375-16 UNC 20 15

0.5-13 UNC 42 31

0.75-10 UNC 100 74

BOLT TORQUE

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Lubrication

The interior parts of the 1079 manual actuator should be lubricated on a regular schedule with a quality gear lubricant.
The interior parts should also be lubricated whenever difficulty in handwheel rotation indicates a need for lubrication.

1. Isolatethecontrolvalvefromthelinepressure,releasepressure from both sides of the valve body, and drain the
process media from both sides of the valve. If using a power actuator, also shut off all pressure lines to the power
actuator,releaseallpressurefromtheactuator.Uselock-outprocedurestobesurethattheabovemeasuresstayin
effect while you work on the equipment.

2. Remove the bolts that secure the power actuator to the manual actuator, and remove the power actuator.

3. Remove the four cap screws that secure the gearbox cover plate and remove the gearbox cover plate.

4. Coat the worm, the drive sleeve gear teeth, and the bearing surfaces of the gearbox housing and worm with a
quality gear lubricant.

5. Install the cover plate and four cap screws.

6. Installthepoweractuatoronthemanualactuator.

Figure 3. Fisher 1079 Declutchable Manual Actuator

10

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Instruction Manual

D500208X012

1079 Manual Actuator

October 2012

Parts Ordering

When corresponding with your Emerson Process Management sales office, indicatethesizeoftheHytorkactuator.If
the manual actuator was shipped separately (not attached to a Hytork actuator), give the serial number of the unit,
which is shown on a tag attached to the manual actuator.

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.

Manual Actuator Assembly
(figure 3)

Key Description

1Gearbox,castiron
2 Handwheel Assembly (includes handwheel and pin)

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Instruction Manual

D500208X012

Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility forproper selection, use, and maintenance of any productremains solelywith the purchaser and end user.

Fisher is a mark owned by one of the companies in the Emerson Process Management businessunit 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 arenot
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 uponrequest. We reserve the right to modify or improve the designs or specifications ofsuch
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

www.Fisher.com

12

E 1993, 2012 Fisher Controls International LLC. All rights reserved.