Instruction Manual
D101329X012
1078 Actuator
Fisher™ 1078 Declutchable Manual Actuator
June 2017
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 2.................................
Specifications 3...............................
Educational Services 3.........................
Installation 5..................................
Converting An Existing Power Actuator for use
with the Fisher 1078 Manual Actuator 6........
Installing the Manual Actuator 6.................
Installing the Manual Actuator on a 1061
Size 30, 40, 60, 68, 80, or 100 and
1052 Size 70 7..........................
Installing the Manual Actuator on a 2052
Size 1, 2, or 3 7..........................
Operation 7...................................
Engaging and Disengaging the Manual Actuator 8..
Engaging the Manual Actuator 8.............
Disengaging the Manual Actuator 8..........
Maintenance 8.................................
Lubrication 9.................................
Parts Ordering 10...............................
Parts List 10...................................
Manual Actuator Assembly 10...................
Field Mounting Parts 10........................
For 1061; and 1052 Size 70 Actuators 10......
Figure 1. Fisher 1078 Manual Actuator Mounted on
a 2052 Size 1 Actuator
X0178
Introduction
Scope of Manual
This instruction manual includes installation, operation, and maintenance information for the Fisher 1078
declutchable manual actuator (figure 1). Refer to separate instruction manuals for instructions covering the power
actuator and control valve.
Do not install, operate, or maintain a 1078 declutchable 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 sales office
Partner before proceeding.
www.Fisher.com
or Local Business
1078 Actuator
June 2017
Table 1. Specifications
Instruction Manual
D101329X012
Available Configurations
Direct and reverse acting; see Handwheel Rotation in
this specification table
Actuator Sizes
See tables 2, 3, and 4
Acceptable Coupling Shaft Diameters
See tables 2, 3, and 4
Power Actuator Compatibility
See tables 2, 3, and 4
Output Torque
See tables 2, 3, and 4
Wheel‐Rim Force
See tables 2, 3, and 4
Handwheel Turns Required For Full Rotation
See tables 2, 3, and 4
Handwheel Rotation
Direct Acting Construction: Clockwise handwheel
rotation closes the valve (produces clockwise valve
shaft rotation)
Reverse Acting Construction: Clockwise handwheel
rotation closes the valve (produces counterclockwise
valve shaft rotation)
Decide whether Direct or Reverse Action is required
by referring to the appropriate valve or power
actuator instruction manual and determining valve
rotation.
Maximum Output Rotation
90 degrees; limited by travel stops in the power
actuator
Standard Mounting Positions
1052 (size 70)
(1)
: handwheel down (std) or
handwheel right‐hand or left‐hand mount (optional)
1061 (sizes 30, 40, 60, 68, 80, and 100)
(1)
:
handwheel down (std) or handwheel right‐hand or
left‐hand mount (optional)
(1)
2052 (sizes 1, 2, and 3)
: handwheel down (std) or
handwheel right-hand or left-hand mount (optional)
Approximate Weights without Handwheel
Size AAA: 2.7 kg (6 lb)
Size AA: 6.8 kg (15 lb)
Size A: 9.5 kg (21 lb)
Size 2A: 13.6 kg (30 lb)
Size 1A: 15.9 kg (35 lb)
Size B: 23.1 kg (51 lb)
Size C: 29.9 kg (66 lb)
Size D: 63.5 kg (140 lb)
Size
II‐FA: 81.6 kg (180 lb)
Handwheel Weight
6‐inch: 1.8 kg (4 lb)
8‐inch: 2.3 kg (5 lb)
12‐inch: 3.2 kg (7 lb)
16‐inch: 6.8 kg (15 lb)
24‐inch: 5.4 kg (12 lb)
30‐inch: 6.4 kg (14 lb)
36‐inch: 7.3 kg (16 lb)
1. If a positioner is used, the right‐hand or left‐hand mounting option will be limited to the side away from the positioner.
Description
The 1078 manual actuator, shown in figures 1 and 2, is a declutchable unit for manual operation of control valves and
equipment that use power actuators. The 1078 manual actuator mounts directly to Fisher 1052 size 70; 1061 sizes 30,
40, 60, 68, 80, and 100; and to all sizes of 2052 actuators. The 1078 manual actuator can be engaged to allow manual
operation of the valve when the power actuator is not in use. It can be 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.
2
Instruction Manual
D101329X012
Figure 2. Fisher 1078 Declutchable Manual Actuator Mounted on a 2052 Size 1 Actuator and V300 Valve with
FIELDVUE™ DVC6200 Digital Valve Controller
1078 Actuator
June 2017
X0177
Specifications
1078 manual actuator specifications are given in table 1. Specifications for a control valve assembly as it comes from
the factory appear on a nameplate attached to the power actuator.
Educational Services
For information on available courses for Fisher 1078 manual actuators, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: education@emerson.com
emerson.com/fishervalvetraining
3
1078 Actuator
June 2017
Table 2. Fisher 2052 Actuator Size Selection and Specifications for Sizes AAA, A, and C
MANUAL
ACTUATOR
SIZE
AAA
(2400 in•lbs)
A
(8000 in•lbs)
C
(18000
in•lbs)
SHAFT SIZE
mm Inch Type Size mm Inch NSm LbfSin N Pounds N Pounds 60 90
12.7 1/2
14.2x15.9
15.9
19.1 3/4 271 2400 298 67
14.3x15.9
15.9
19.1 3/4 590 5221 246 54
22.2
25.4
28.6x31.8
31.8
19.1 3/4
22.2
25.4
28.6x31.8
31.8
38.1
39.7x44.5
44.5
50.8
9/16x5/8
5/8
9/16x5/8
5/8
7/8
1
1-1/8x1-1/4
1-1/4
7/8
1
1-1/8x1-1/4
1-1/4
1-1/2
1-9/16x1-3/4
1-3/4
2
POWER
ACTUATOR
2052 1 203 8
2052 2 406 16
2052 3 610 24
STANDARD
HANDWHEEL
DIAMETER
MAXIMUM
TORQUE
131 1156 144 32
211 1866 232 52
489 4326 204 45
818 7241 341 75
904 8000 377 83
1338 11842 279 61
1566 13862 326 71
2034 18000 424 93
For Maximum
WHEEL‐RIM‐FORCE
Torque
Instruction Manual
For Less Than Maximum
Torque
Divide NSm
req'd by
0.91
Divide NSm
req'd by 2.4
Divide NSm
req'd by 4.8
Divide lbfSin
req'd by 36
Divide lbfSin
req'd by 96
Divide lbfSin
req'd by 194
D101329X012
HANDWHEEL
TURNS FOR
ROTATION
Degrees
4 6
5.3 8
9 13.5
Table 3. Fisher 1052 Actuator Size Selection and Specifications for Sizes 2A, 1A, B, and C
MANUAL
ACTUATOR
SIZE
(max output
torque)
1A
(8200 in•lbs)
B
(12,000
in•lbs)
C
(18,000
in•lbs)
1. Field conversion of actuators for F and G mounting adaptations requires installation of new parts.
2. Compare table value with torque requirements of the valve plus the torque required to compress the power actuator spring (from Fisher Catalog 14). Note that dynamic torque of the valve
may have a positive or negative effect on total torque required.
SHAFT SIZE
mm Inch Type Size mm Inch NSm LbfSin N Pounds N Pounds 60 90
31.8,
28.6x
31.8
38.1
31.8x
38.1
(44.4,
50.8),
39.7
x44.5
31.8 1‐1/4
38.1,
(44.4,
50.8)
31.8 1‐1/4
(44.4,
50.8)
1‐1/4,
1‐1/8x
1‐1/4
1‐1/2,
1‐1/4x
1‐1/2
(1‐3/4,
2),
1‐9/16
x1‐3/4
1‐1/2,
(1‐3/4,
2)
(1‐3/4,
2)
POWER
ACTUATOR
1052 70 32:1 610 24 929 8200 378 85
1052 70 40:1 610 24 1356 12,000 369 83
1052 70 54:1 610 24 2034 18,000 414 93
GEAR
(1)
RATIO
HANDWHEEL
DIAMETER
MAXIMUM
TORQUE
(2)
For Maximum
WHEEL‐RIM‐FORCE
Torque
For Less Than
Maximum Torque
Divide NSm
req'd by 2.4
Divide NSm
req'd by 3.6
Divide NSm
req'd by 4.8
lbfSin req'd
lbfSin req'd
lbfSin req'd
Divide
by 96
Divide
by 144
Divide
by 194
HANDWHEEL
TURNS FOR
ROTATION
Degrees
5.3 8
6.7 10
9 13.5
4
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