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: 800-338-8158 or
Phone: 641-754-3771
FAX: 641-754-3431
e-mail: education@emerson.com
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
3
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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