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Application
DuraDrive Direct Coupled Actuators are designed to be used in both damper and valve control applications.
The following general instructions are for damper applications; refer to the Applicable Literature table for valve literature.
The MF40-7173 is an over the shaft spring return actuator used with floating three-wire output controllers.
Features
•
150 lb-in (17 N-m) rated torque
•
NEMA Type 4 housing (IEC IP56)
•
Custom automatic current sensing motor control provides extended reliability and repeatable timing
•
Direct coupled to the damper shaft with dual industrial hardened universal mounting clamps
•
Floating actuator controlled by SPDT floating controllers, Triacs, or DDC controllers with 2 SPST outputs (drive open, hold, drive closed)
•
Clockwise or counterclockwise spring return is determined by actuator mounting position
•
Accurate 93° travel digitally controlled
•
Integral position indication scale
•
Rugged die-cast housing
•
Oil immersed gear train provides continuous lubrication
•
Rated for operating temperatures up to 140 °F
•
Five year warranty
MF40-7173
DuraDrive™ Series Spring Return
Floating Actuators
General Instructions
Printed in U.S.A. 10-04 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
Applicable Literature
F-Number
F-26750
Description
F-27097
AM-674 Weather Shield and Base Mounting Plate for
DuraDrive Actuators General Instructions
F-25098 AM-676 Universal Shaft Extension General Instructions
F-26898
F-26899
AM-751, AM-752, AM-753, AM-754, AM-755 General
Instructions
AM-756 Metric Conduit Adapter for DuraDrive General
Instructions
Mx41-6xxx-2xx, Mx40-7xxx-2xx Series Actuator/Linkage
Assemblies General Instructions
Audience
– Sales Personnel
– Application Engineers
– Installers
– Service Personnel
– Start-up Technicians
F-26646
F-26752
F-26080
F-13755
F-11080
F-11366
Mx41-6043, Mx41-6xxx, Mx4x-7xxx Series DuraDrive
Actuator Selection Guide
Vx-2000, Vx-7000 Series
Mx4x-7xxx, Mx41-6xxx Series
Ball/Linked Globe Valve Assemblies
Actuator/Linkage Assemblies Selection Guide
EN-205 Water System Guidelines
CA-28 Control Valve Sizing
Valve Selection Chart Water
Valve Selection Chart Steam (two-way valves only)
– Sales Personnel
– Application Engineers
– Installers
– Service Personnel
– Start-up Technicians
– Sales Personnel
– Application Engineers
– Installers
– Service Personnel
– Start-up Technicians
– Application Engineers
– Installers
– Service Personnel
– Start-up Technicians
– Application Engineers
– Installers
– Service Personnel
– Start-up Technicians
Purpose
Describes the globe valve actuator/linkage assembly’s features, specifications, and possible applications.
Provides step-by-step mounting instructions.
Provides features, specifications, mounting dimensions, and other criteria useful in the selection of DuraDrive actuators for damper applications.
Provides features, specifications, mounting dimensions, and other criteria useful in the selection of DuraDrive actuators for globe valve assemblies.
Describes Invensys Building Systems approved water treatment practices.
Provides charts, equations, and diagrams to assist in the configuration of valve system applications.
2
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
SPECIFICATIONS
Inputs
Control Signal: SPDT floating control input, Triacs (500 mA rated), or 2 SPST contacts.
See Figure-1 through Figure-5.
Power Input: See Table-1. All 24 Vac circuits are Class 2. All circuits 30 Vac and above are
Class 1.
Connections:
Power, 24 inch (61 cm) long, 18 AWG color coded pigtail leads.
Control, 24 inch (61 cm) long, 22 AWG color coded pigtail leads.
Outputs
Electrical:
Stroke, Electronically limited to 93° ±1°.
Duty Cycle 100%.
Mechanical:
Anti-Rotation Bracket,
Standard 9" long x 13/16" wide (229 x 21 mm), included with the actuator.
Optional Order AM-752 (4" long x 1-11/16" wide) for mounting the actuator in narrow spaces.
Universal Mounting Clamps, Two clamps are required for all mounting configurations.
Standard 3/8" to 1/2" (10 to 13 mm) round and square shaft mounting clamps are included with the actuator.
Optional Order AM-753 for 5/8" (16 mm) square and 3/4" to 1" (19 to 25 mm) round damper shafts, two per package.
Minimum Damper Shaft Length,
Standard Damper shaft must be at least 4-5/8" (117 mm) long for standard mounting.
Optional Shorter than standard length shafts require the AM-676 shaft extension
(order separately).
Position Indicator, Scale numbered from 0 to 95°, provided for position indication.
Nominal Damper Area, Actuator sizing should be done in accordance with damper manufacturer’s specifications.
Direction of Rotation, Clockwise or counterclockwise rotation determined by actuator mounting. The zero (0) position on the position indicator is the normal or spring return position.
Environment
Ambient Temperature Limits:
Shipping & Storage, -40 to 160°F (-40 to 71°C).
Operating, -25 to 140°F (-32 to 60°C).
Humidity: 15 to 95% RH, non-condensing.
Location: NEMA 1. NEMA Type 4 (IEC IP56) with customer supplied water tight conduit connectors.
Agency Listings
UL 873: Underwriters Laboratories Inc. listed (File # E9429 Category Temperature-
Indicating and Regulating Equipment).
CUL: UL Listed for use in Canada by Underwriters Laboratories. Canadian Standards
C22.2 No. 24-93.
European Community: EMC Directive (89/336/EEC). Low Voltage Directive (72/23/EEC).
Machinery Directive (89/392EEC). Safety Directive (92/59/EEC).
Table-1 Model Chart.
Part
Number
MF40-7173
Voltage
(± 20%)
24 Vac
Actuator Power Input
Hz Watts
VA
Running Holding
50 60 5.5
10.0
4.3
Approximate 93° Rotation
Timing in Seconds
@ 70° F (21° C) for Rated Torque
145
Output Torque Rating
lb.-in. (N-m)
Minimum Maximum Stall
150 (17) 450 (51)
F-26749-2 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
3
ACCESSORIES
AM-674
AM-676
AM-751
AM-752
AM-753
AM-754
AM-756
TF-711-02
TF-713-02
X-5521
Weather Shield - steel
Universal Shaft Extension, approximately 9-1/2" (242 mm) long for use on 3/8" to
11/16"(10 to 17 mm) Round Shafts, 3/8" to 9/16" (10 to 14 mm) square shafts
(AM-753 clamps required)
Standard Anti-rotation Bracket 9" long x 13/16" wide (229 x 21 mm), included with actuator
Optional Anti-rotation Bracket 4" long x 1-11/6" wide (102 x 43 mm), for narrow spaces
Optional Universal Mounting Clamps for 5/8"(16 mm) square shaft, 3/4" and 1"
(19 to 25 mm) round shafts (two per package)
Standard Universal Mounting Clamps for 3/8" to 1/2" (10 to 13 mm) round and square shafts, two included with actuator
Metric Conduit Adaptor M20 x 1.5 to 1/2" NPT (two per package)
1/2" Sealtight Water Tight Conduit Connector (straight)
1/2" Sealtight Water Tight Conduit Connector (90°)
1/2" Pipe Plug, included with actuator
TYPICAL APPLICATIONS (wiring diagram)
1
CCW
White
4
CW
Black COM
MF40-7173
2
4
24 Vac
3
Black 24H
Black/Blue
Green/Yellow
24G
GRD
1 SPDT Floating or Switch/Controller or 2 SPST.
2 Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.
3 Ground wire may be Green on some models.
4 As viewed from "L" side.
Figure-1 Typical SPDT Controller Wiring Diagram.
1
Controller
DOX
DOY
C
2
GRD
AC
CCW
CW
Black COM
MF40-7173
3
24 Vac
Black 24H
Black/Blue
Green/Yellow
24G
GRD
4
1 Triacs switching to 24G.
2 Do not connect drive wiring to C terminal of controller.
3 Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.
4 Ground wire may be Green on some models.
5 As viewed from "L" side.
Figure-2 Typical Triacs Switching to 24G Wiring Diagram of Actuator with Invensys MCS-P-75x and MSC -P150x Series Controllers.
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
1
Controller
DOX
DOY
CCW
CW
Black COM
MF40-7173
2
24H
24G
24 Vac
Black 24H
Black/Blue
Green/Yellow
24G
GRD
3
1 Triacs switching to 24H.
2 Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.
3 Ground wire may be Green on some models.
4 As viewed from "L" side.
Figure-3 Typical Triacs Switching to 24H Wiring Diagram of Actuator with Invensys MN-HPFC Controllers.
Controller
DOX
1
DOY
A
B
B
A
White
5
Black
CW
COM
MF40-7173
2
24 Vac
Black 24H
Black/Blue
Green/Yellow
24G
GRD
3
4
1 Isolated triac wiring.
2 Unused conduit port must remain plugged with a water tight pipe plug as shipped from factory to maintain NEMA Type 4 or IP56 rating.
3 The MSC-MPC controller must have a dedicated transformer.
4 Ground wire may be Green on some models.
5 As viewed from "L" side.
Figure-4 Typical Isolated Triac Wiring Diagram of Actuator with Invensys MPC-8DO and MPC-SSR Controllers
F-26749-2 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
5
24 Vac
CCW
CW
Black COM
MF40-7173
1
Black 24H
Black/Blue
Green/Yellow
24G
GRD
24H
24G
24 Vac
Transformer
CCW
CW
Black COM
MF40-7173
1
INSTALLATION
Inspection
24 Vac
2
Black 24H
Black/Blue
Green/Yellow
24G
GRD
1 Not recommended for applications needing multiple actuators mounted on a common jackshaft.
2 Ground wire may be Green on some models.
3 As viewed from "L" side.
Figure-5 Typical Wiring of Multiple Actuators Using One Transformer.
Requirements
Inspect the package for damage. If damaged, notify the appropriate carrier immediately.
If undamaged, open the package and inspect the device for obvious damage. Return damaged products.
•
Job wiring diagrams
•
Tools (not provided)
– Socket wrench 1/2 inch, used for universal mounting clamp nuts
– Open-end wrench 10 mm, used for installing AM-676 universal shaft extension
– Slotted screwdriver, used for installing anti-rotation brackets
– Allen wrench 3/16", used for manual override
•
Appropriate accessories
– Water tight 1/2 inch conduit seals Invensys part number TF-711-02 or T&B #5332
(straight, Invensys part number TF-713-02 or T&B #5352 (90°), or equivalent.
– Water tight 1/2 inch flexible conduit (e.,g. Anaconda: Sealtight) or 20 mm flexible water tight conduit when using AM-756 metric conduit adapter with appropriate metric water tight seals.
– Water tight 1/2 inch flexible conduit (Anaconda: Sealtight) or 20 mm flexible water tight conduit when using AM-756 metric conduit adaptor
– Two #8 1/2 inch (13 mm) sheet metal screws for mounting anti-rotation bracket
(optional)
•
Training: Installer must be a qualified, experienced technician
6
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
Precautions
Location
F-26749-2
General
Warning:
•
Electrical shock hazard! Disconnect the power supply (line power) before and during installation to prevent electric shock and equipment damage.
•
Make all connections in accordance with the wiring diagram and in accordance with national and local electrical codes. Use copper conductors only.
Caution:
•
Avoid electrical noise interference. Do not install near large contactors, electrical machinery, or welding equipment.
•
Avoid locations where excessive moisture, corrosive fumes, vibration, or explosive vapors are present.
Federal Communications Commission (FCC)
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy and may cause harmful interference if not installed and used in accordance with the instructions. Even when instructions are followed, there is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception— which can be determined by turning the equipment off and on—the user is encouraged to try to correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
•
Consult the dealer or an experienced radio/television technician for help.
Canadian Department of Communications (DOC)
Note: This class B digital apparatus meets all requirements of the Canadian Interference-
Causing Equipment Regulations.
Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le material broilleur du Canada.
European Standard EN 55022
Warning: This is a class B (European Classification) product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
Caution:
•
To maintain NEMA Type 4 rating, use water tight 1/2" flexible conduit only, with 1/2" conduit connector of the water tight type, Invensys part number TF-711-02 or T&B
#5332 (straight), Invensys part number TF-713-02 or T&B #5352 (90°), or equivalent.
•
For metric conduit applications using AM-756 conduit adapters, use the appropriate metric water tight seals to maintain compliance with IP56 or NEMA Type 4 rating.
•
Use a water tight 1/2" pipe plug in any unused actuator conduit ports and seal with water tight tape to stay in compliance with NEMA Type 4 or IP56 rating. Use Invensys part number X-5521, Grinnell #8700159257 (black), Grinnell #8700159851
(galvanized), or equivalent. Actuators with unused conduit ports are shipped with the unused port plugged.
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
7
Mounting
8
Mount the DuraDrive Actuator directly on the damper shaft in locations that clear the maximum dimensions of the actuator case and allow the actuator to be mounted flush to the surface of the terminal box and perpendicular to the damper shaft.
Note: Some terminal boxes have sheet metal screw heads or other protrusions near the damper shaft. In these cases, a spacer or shim may be added under the mounting tab of the actuator to make the actuator perpendicular to the shaft.
Damper Actuator Sizing
Correct sizing of the actuator is necessary for proper control of dampers. The area of damper that can be controlled by a given actuator is dependent upon the quality of the damper, the pressure drop across the damper in the closed position, and the velocity of the air flow through the damper. To obtain actual damper torque requirements, contact the damper manufacturer.
Damper Shaft Sizing
Use the “Long Damper Shaft” mounting instructions if the damper shaft is at least 4-5/8"
(117 mm) long.
Use the “Short Damper Shaft” mounting instructions if the damper shaft is shorter than
4-5/8" or the area around the damper shaft is too narrow to allow standard mounting, as
described in the “Long Damper Shaft” mounting section. See Figure-6 for minimum shaft
length.
Min. 4-5/8" (117 mm)
Figure-6 Long Damper Shaft Dimensions.
Caution: The MF40-7173 actuator is not designed to be used on aluminum damper shafts, solid steel shafts smaller than 1/2" diameter round or 1/2" square, or hollow steel shafts smaller than 3/4" round. The actuator can produce up to 450 in-lbs (51 N-m) maximum stall torque, which could result in the actuator snapping off an aluminum damper
shaft or an improperly sized steel damper shaft. Refer to Table-2 for nominal damper shaft
sizes.
Table-2 Steel Damper Shaft Specifications.
Damper Shaft Shape
Round
Square
Damper Shaft Type
Solid bar
Hollow tubing
Solid bar
O.D. (Nominal) a
1/2" to 1"
3/4"
13/16"
27/32"
7/8"
15/16"
1"
1/2" to 5/8" a
Damper shaft sizes over 1/2" (13 mm) O.D. require AM-753 universal mounting clamps.
I.D. (Maximum)
0
0.375
0.683
0.626
0.805
0.808
0.930
0
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
Mounting the Actuator for Clockwise or Counterclockwise Dampers
The zero (0) position on the position indicator is the normal or spring return position. When the actuator is mounted with the “R” side facing the installer and the control signal increases the actuator will rotate in the counterclockwise direction. When the actuator is mounted with the “L” side facing the installer and the control signal increases the actuator will rotate in the clockwise direction.
Long Damper Shaft
1. Move the damper to its normal position. Verify the controller action is set to match the
damper application. See TYPICAL APPLICATIONS (wiring diagram).
– For a normally closed damper, when damper is closed the actuator position indicator should be at 0°. When damper is open the actuator position indicator should be at 90°.
– For a normally open damper, when damper is open the actuator position indicator should be at 0°. When damper is closed the actuator position indicator should be at
90°.
Note: The actuator comes equipped with two AM-754 universal mounting clamps. For damper shafts larger than 1/2" (13 mm) in diameter, the AM-753 universal mounting clamps are required (order separately). The AM-753 clamps accommodate round shaft sizes ranging from 3/4" to 1" (19 to 25 mm) or 5/8" (16 mm) square shafts.
2. Slide the actuator over the shaft and into its desired final mounting position.
– If the damper shaft rotates clockwise to the closed position, mount the actuator with
the side marked “R” facing the installer. See Figure-7.
– If the damper shaft rotates counterclockwise to the closed position, mount the
actuator with the side marked “L” facing the installer. See Figure-8.
3. Hand tighten the nuts on both of the actuator’s universal mounting clamps.
4. Align the actuator at 90° (perpendicular) to the damper shaft. See Figure-9.
5. Slide the anti-rotation bracket pin into the mounting slot on the actuator and drill
mounting holes. See Figure-9. For narrow spaces the AM-752 anti-rotation bracket is
recommended (order separately).
6. Attach one side of the anti-rotation bracket to the mounting surface with one of the screws provided. Leave the screw loose so that the bracket can be rotated. See
Figure-7 for clockwise or Figure-8 for counterclockwise spring return.
7. Pivot the anti-rotation bracket away from the actuator. See Figure-7 or Figure-8.
8. Loosen the universal mounting clamps, making sure not to move the damper shaft.
Rotate the actuator approximately 5° in the direction which would open the damper. See
9. Tighten all of the universal mounting clamp nuts with a 1/2" socket wrench. Apply
4 to 6 ft-lbs (5 to 8 N-m) of torque.
10. Manually rotate the actuator toward the full-closed position to apply pressure to the
damper seals. See Figure-7 or Figure-8.
11. Pivot the anti-rotation bracket into place and secure the other side of the bracket onto
the mounting surface with the other screw provided with the actuator. See Figure-7 or
12. Verify that the damper is in its full-closed position and actuator at 90° (perpendicular) to
the damper shaft. See Figure-7 or Figure-8.
F-26749-2 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
9
1
R
1
CENTERLINE
1 Two AM-754 Universal Mounting Clamp Assemblies are provided with each actuator. Each clamp assembly includes 1 universal mounting clamp and
1 retaining clip. Two Universal Mounting Clamp
Assemblies are required for all mounting configurations.
Figure-7 Long Damper Shaft Mounting with Clockwise Spring Return for Normally Closed Damper.
5
10
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
1
CENTERLINE
1 Two AM-754 Universal Mounting Clamp Assemblies are provided with each actuator. Each clamp assembly includes 1 universal mounting clamp and
1 retaining clip. Two Universal Mounting Clamp
Assemblies are required for all mounting configurations.
5
Figure-8 Long Damper Shaft Mounting with Counterclockwise Spring Return for Normally Closed Damper.
F-26749-2
Actuator Mounting Slot
AM-751
Anti-rotation Bracket
90
90
Figure-9 Mounting Anti-rotation Bracket to Actuator.
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
11
12
Short Damper Shaft
See Figure-10 for installation of actuator using the AM-676 Universal Shaft Extension.
Installation requires AM-676 Universal Shaft Extension and AM-753 Universal Mounting
Clamps for 3/4" to 1" (19 to 25 mm) shafts, these items must be ordered separately.
1. Loosen the V-clamp nuts on the AM-676 universal shaft extension.
2. Fit the universal shaft extension fully onto the damper shaft. Tighten the universal shaft extension V-clamp nuts with a 10 mm open-end wrench. Apply 4 to 6 ft. lbs
(5 to 8 N-m) of torque.
3. Move the damper to its normal position. Verify the controller action is set to match the
damper application. See TYPICAL APPLICATIONS (wiring diagram).
– For a normally closed damper, when damper is closed the actuator position indicator should be at 0°. When damper is open the actuator position indicator should be at 90°.
– For a normally open damper, when damper is open the actuator position indicator should be at 0°. When damper is closed the actuator position indicator should be at
90°.
4. Remove the mounting clamps from the actuator and replace them with the AM-753 universal mounting clamps.
5. Loosen the nuts on both of the AM-753 universal mounting clamps on the damper actuator.
– If the damper shaft rotates clockwise to the closed position, it is a normally open damper and requires the actuator to be mounted with the side marked “R” facing the
– If the damper shaft rotates counterclockwise to the closed position, it is a normally closed damper and requires the actuator to be mounted with the side marked “L”
facing the installer. See Figure-8.
6. Assemble the damper actuator onto the universal shaft extension, allowing the extension to slide through the actuator’s universal mounting clamps. Make sure the actuator is 90° (perpendicular) to the damper shaft. Then, hand tighten the nuts on both
of the actuator’s universal mounting clamps. See Figure-9
Note: If the universal shaft extension protrudes excessively above the damper actuator's top universal mounting clamp:
• remove the damper actuator from the universal shaft extension,
• remove the extension from the damper shaft,
• shorten the universal shaft extension by cutting it to the desired length,
• then proceed to follow mounting instructions.
7. Slide the anti-rotation bracket pin into the mounting slot on the actuator. See Figure-9.
For narrow spaces, the AM-752 anti-rotation bracket is recommended (order separately).
8. Position the actuator and bracket in the desired final mounting position on the mounting
surface and drill mounting holes. See Figure-10.
9. Attach one side of the anti-rotation bracket to the mounting surface with one of the screws provided. Leave the screw loose so that the bracket can be rotated. See
Figure-7 for clockwise or Figure-8 for counterclockwise spring return.
10. Pivot the anti-rotation bracket away from the actuator. See Figure-7 or Figure-8.
11. Loosen the universal mounting clamps, making sure not to move the damper shaft.
Rotate the actuator approximately 5° in the direction which would open the damper. See
12. Tighten all of the universal mounting clamp nuts with a 1/2" socket wrench. Apply
4 to 6 ft -lbs (5 to 8 N-m) of torque.
13. Manually rotate the actuator toward the full-closed position to apply pressure to the
damper seals. See Figure-7 or Figure-8.
14. Pivot the anti-rotation bracket into place and secure the other side of the bracket onto
the mounting surface with the other screw provided with the actuator. See Figure-7 or
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
\
15. Verify that the damper is in its full-closed position and actuator at 90° (perpendicular) to
the damper shaft. See Figure-7 or Figure-8.
Actuator
AM-753
Universal
Mounting
Clamps
Anti-rotation
Bracket
(included with actuator)
AM-676
1
Universal Shaft
Extension
Mounting Surface
Duct
V-clamp
1 The AM-676 extends the damper shaft approximately
9" (229 mm).
Damper Shaft
Figure-10 Installation of Universal Shaft Extension.
Wiring Requirements
Control and Power Leads
Remove blue plastic thread protectors before installing conduit fittings. See Figure-1 and
Figure-5 for typical wiring applications and Table-3 for maximum wire lengths.
Caution: This product contains a half-wave rectifier power supply and must not be powered by transformers used to power other devices utilizing non-isolated full-wave rectifier power supplies. Refer to EN-206 Guidelines for Powering Multiple Full-Wave and
Half-Wave Rectifier Devices from a Common Transformer, F-26363, for further information.
Note: Class 2 control and power lead wiring must be routed separately from line voltage wiring and any other non-class 2 circuits.
Table-3 Control and Power Wiring Data.
Actuator
Voltage
24 Vac
Part
Number
MF40-7173
14 AWG
1118
(341)
Maximum Wire Run in ft. (m)
(5% Voltage Drop)
16 AWG
703
(214)
18 AWG
442
(135)
F-26749-2 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
13
CHECKOUT
This procedure is for checking out a normally closed actuator that is typically mounted unpowered. It is possible to mount the actuator with power applied for special applications.
Note: To check out a normally open actuator the procedure is the same as below, except the initial position is open and closed when powered.
After the entire system has been installed and the actuator has been powered up, the following check can be made for proper system operation. Check for correct operation of the damper while the actuator is being stroked.
1. Apply power to the actuator and control system.
2. Set the switch/controller to cause the actuator to drive open (usually, White wire to
24H).
3. Check to see that the actuator travels to the full-open position.
4. Set the switch/controller to cause the actuator to drive closed (usually, Red wire to 24H).
5. Check to see that the actuator travels to the fully closed position.
Note: If anticipated damper operation does not occur, verify the Long Damper Shaft or
Short Damper Shaft mounting procedures. Also, verify that the controller has the proper action (direct or reverse) to match the damper required operation.
THEORY OF OPERATION
The actuator is, by means of dual mounting clamps, directly mounted onto the damper shaft.
The anti-rotation bracket supplied with the actuator will prevent lateral movement of the actuator. The damper actuator is not provided with and does not require any limiting switches, but is electronically protected against overloading.
The angle or rotation is electronically limited to 93° ±1°. When reaching the damper or actuator end position, the motor stops automatically. The position of the actuator is indicated by means of scale reading 0 to 95°.
MAINTENANCE
Regular maintenance of the total system is recommended to assure sustained optimum performance. The MF40-7173 actuator is maintenance free.
FIELD REPAIR
None. Replace with functional actuator.
14
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
F-26749-2
DIMENSIONAL DATA
Figure-11 dimensions are in inches (mm).
4"
(102)
4"
(102)
1-27/64"
(36)
10-27/32" (275)
Figure-11 MF40-7173 Damper Actuator.
F-26749-2 © Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
15
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved
No part of this document may be photocopied or reproduced by any means, or translated to another language without prior written consent of Invensys.
All specifications are nominal and may change as design improvements are introduced. Invensys shall not be liable for damages resulting from misapplication or misuse of its products.
F-26749-2 BK
Invensys and DuraDrive are trademarks of Invensys plc and its subsidiaries and affiliates.
All other trademarks are the property of their respective owners.
Printed in U.S.A.
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