Schneider Electric MA-5200 Series, MA-5300 Series Data Sheet

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Application

MA-521X Series

Valve Actuator

MA-533X Series

Damper Actuator

The MA-5200 series and MA-5300 series actuators a re used for two-position control of valves and dampers which require a return to the normal position upon power interruption.

Features

• Two-position actuators controlled by an SPST

controller

• Spring return

• 24 Vac, 120 Vac, and 240 Vac mode ls ar e av aila ble

MA-5200 Series MA-5300 Series

Two-Position Actuators

General Instructions

• An actuator with the part number suf fix "- 500" has a

built-in, adjust

able, SPDT auxiliary switch

• Available in damper models or base models that

quire damper or valve linkage

• Die cast lower housing with 1/2" conduit opening

and painted steel upper housing

• Hydraulic actuator with oil-immersed motor and

pump

Applicable Literature

• Pneumatic Products Catalog, F-27383

• Environmental Controls Cross-Reference Guide, F-

23638

• Environmental Controls Reference Manual,

F-21683

• Environmental Controls Application Manual,

F-21335

• Material Safety Data Sheet MSDS-3,

(Until Feb. 1989)

• Material Safety Data Sheet MSDS-12 (Currently)

SPECIFICATIONS

Actuator Inputs

Control Circuit: Two wire, SPST. Power Input: Refer to Table-1 and Table-2. Connections: Color-coded 4 ft. (1.2 m) leads.

Actuator Outputs

Electrical:

Auxiliary Switch (MA-5xxx-500), 10 Amps, 120/240 Vac adjustable SPDT, factory set

to close the N.O. contact at the retracted end of stroke.

Mechanical:

Stroke,

Damper Approximately 2" (51 mm) from fully retracted to fully extended (includes

AM-601 linkage).

Valve Approximately 9/16" (14.3 mm) from fully retracted to fully extended. Nominal Damper Area, Actuator sizing should be done in accordance with damper manufacturer’s specifications.

Environment

Ambient Temperature Limits:

Shipping & Storage, -40 to 140° F (-40 to 60° C). Operating,

Damper 0 to 140° F (-18 to 60° C).

Valve Refer to Table-3.

Humidity: 5 to 95% RH, non-condensing. Location: NEMA Type 1. Agency Listings:

UL 873, Underwriters Laboratories (File # E9429 Category Temperature-Indicating and

Regulating Equipment). CSA, Certified for use in Canada by Underwriters Laboratories. Canadian Standard C22.2 No. 24-93. European Community, EMC Directive (89/336/EEC). Low Voltage Directive (72/23/EEC).

Table-1 Model Chart for Damper Actuators.

Actuator Power Input

Part

Number

MA-5330 120 MA-5333 24

Voltage

+10/

-15%

Hz VA Watts

50 60 18 14 60 15 20 (2.3)

Timing in Seconds

@ 72° F (22° C)

To Extend

(No Load

Stroke)

Retract

on Power

Torque Rating

(Extend & Retract)

lb.-in. (N-m)

Loss

Table-2 Model Chart for Valve Actuators. Also for Damper Actuators with Field Assembled Damper Linkages.

Timing in Seconds @

72° F (22° C)

To Extend

(No Load

Stroke)

Retract on

Power

Loss

Required Linkage

Damper Valve

Part Number

MA-5210

Voltage

+10/-15%

Actuator Power Input

Hz VA Watts

10 Amps

Aux

Switch

120

MA-5210-500 Yes MA-5211

240

50 60 18 14

MA-5211-500 Yes MA-5213

60 15 AM-601

AV-600

AV-601

MA-5213-500 Yes

Damper models are provided with factory-installed damper linkages. Only base models require separately-ordered linkages.

With the installation of the AM-601 damper linkage, these valve actuat ors beco me fu nctio nally the same a s the d amper actua tors li st ed i n Table- 1. Re fer to

Table-1 for the torque rating.

May be required for steam and hot water. Refer to Table-3.

Table-3 Maximum Allowable Ambient Air Temperature for Valve Actuators.

Maximum Temperature of Media

in the Valve Body

(Check the Rating of the Valve)

°F (°C)

366 (186) 90 (32) 90 (32)

Maximum Ambient Temperature

of MA-521x Series

AV-600 (Only)

°F (°C)

AV-600 and AV-601

°F (°C)

340 (171) 100 (38) 100 (38) 281 (138) 115 (46) 140 (46)

181 (83) 140 (60) 80 (26) 140 (60)

Maximum ambient temperature of the actuator must never exceed 140° F (60° C).

140 (60) 140 (60)

ACCESSORIES Common

11-1612 1/2" conduit bushing

Damper Linkages

AM-111 Crank arm for 5/16" (8 mm) diameter damper shaft AM-112 Crank arm for 3/8" (10 mm) diameter damper shaft AM-113 Crank arm for 1/2" (13 mm) diameter damper shaft AM-115 Crank arm for 7/16" (11 mm) diameter damper shaft AM-122 Linkage connector straight type AM-123 Damper clip AM-125 5/16" diameter x 20" damper rod AM-125-048 5/16" diameter x 48" damper rod AM-132 Ball joint connector AM-161-3 Damper linkage kit AM-601 Device includes mounting bracket, damper linkage with spring, and AM-122

straight connector. Required to modify (MA-521x series) valve actuators into 2" (51

mm) stroke damper actuators.

AM-602 Spacer

Valve Linkages

AV-600 Valve linkage AV-601 Valve linkage extension for hot water and steam applications; use with AV-600

TOOLS (factory-available)

TOOL-12 Wrench for adjustment of auxiliary switch TOOL-19 Spring compression tool for AV-600 TOOL-37 1-5/8" (41 mm) open-ended wrench

TYPICAL APPLICATIONS (wiring diagrams)

Black

Green

MA-5XXX Actuator

NOTE: Actuator extends when

contacts are closed and retracts when contacts are open

Actuator Voltage

Vac

Color(s) of

L2 Lead

24 120 240

Black/Blue

White

White/Black

Red/White (C)

Thermostat

or Switch

Orange (N.C.)

Brown (N.O.)

Aux. Switch Leads

(-500 Actuators only)

Figure-1 Typical Wiring for MA-5xxx Series Actuators.

INSTALLATION Inspection 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.

Requirements • Job wiring diagrams.

• Tools (not provided):

– Digital Vo lt-ohm Meter (DVM). – Appropriate drill and drill bit for mounting screws. – Appropriate screw drivers and wrenches. – TOOL-12, Wrench for adjustment of auxiliary switch. – TOOL-19, Spring compression tool for AV-600. – TOOL-37, 1-5/8" (41 mm) open-ended wrench.

• Training: Installer must be a qualified, experienced technician.

Warning:

• Disconnect power supply before installation to prevent electrical 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:

• Static charges produce voltages high enough to damage the electronic components.

Follow static electricity precautions when installing or servicing the device(s). Discharge any static electricity you may have accumulated by using wrist straps, or by touching a known, securely grounded object.

• Do not exceed the ratings of the device(s).

• Do not apply power to the unit unless the damper linkage and/or the valve assembly

have been installed.

• Avoid locations where excessive moisture, corrosive fumes, or vibration is present.

• Do not install insulation on any part of the actuator.

Mounting Do not twist or exert any force on the actuator housing during installation. Either turn the

Housing

Base

Wrench Flats

base by hand or, if necessary , use a 1-5/8" (41 mm) open-ended wrench (TOOL-37) on the flats provided on the actuator base or the valve body mounting nut. Refer to

Figure-2 Housing and Base Location.

Dampers

The actuator is not position sensitive. It can be mounted in any position in a NEMA Type 1 location.

Valves

Allow 3" (76 mm) of clearance above the actuator valve assembly for the removal and reattachment of the actuator to the installed valve.

1. Install all two-way valves so that they close against the flow . An arrow o n the valve body or tag indicates proper flow direction.

2. Always install three-way mixing valves with two inlets and one outlet.

3. Always install three-way diverting valves with one inlet and two outlets.

Figure-2.

Caution: For steam applications only, mount the actuator above the valve body at 45° from vertical.

4. Actuators can be mounted in any upright position above the centerline of the valve body.

Wiring Requirements Power Leads

The low voltage (24 Va c) power leads may be connected to a Class 2 circuit if routed separately from Class 1 circuit wiring. The line voltage (120 and 240 Vac) leads must be connected to a Class 1 circuit. Refer to

Refer to T able-4 for the maximum length of run for the power leads, for the given wire size(s). T o determine the allowable maximum power lead run when wiring multiple actuators, divide the maximum run shown in for further details.

Figure-7.

Table-4 by the number of actuators on the run. Refer to Figure-3

Table-4 Power Wiring Data.

To Vac Power

To Additional MA-52XX

Series Actuators

Black

Green

MA-52XX

24 Vac Black/Blue 120 Vac White 240 Vac White/Black

Actuator

Voltage

Vac

120

240

120

Actuator Model

Number

MA-5210 MA-5210-500 MA-5211 MA-5211-500 MA-5213 MA-5213-500 MA-5330 MA-5330-500 MA-5333 MA-5333-500

Power Lead

Colors

Black & White 14 3,500 (1,067)

Black & White/Black 14 6,000 (1,829)

Black & Black/Blue

Black & White 14 3,500 (1,067)

Black & Black/Blue

Wire SizeGAMaximum Wire Run

14 12

ft. (m)

300 (91.5)

480 (146.3)

300 (91.5)

480 (146.3)

Figure-3 Wiring of Multiple MA-52xx Series Actuators to Single Power Source.

Auxiliary Switch Leads

The low voltage (24 Va c) auxiliary switch leads may be connected to a Class 2 circuit. The line voltage (120 Vac and 240 Vac) a uxiliary switch leads must be connected to a

1 circuit and routed separately from any Class 2 circuit wiring. Refer to Figure-7.

Class

Wiring Connections Wire Lead Connections (No Conduit)

Make connections as required. Refer to Figure-1 for a wiring diagram of a typical application. Refer to Figure-4 for a view of the actuator.

Note: The cover plate and screw supplied with the actuator are not required with this method.

Figure-4 Connection of Wire Leads (No Conduit).

Base

Knockout

Ribs

Cover Plate

Base

Installing 3/8" Flexible Conduit Onto One or Both Sides of Actuator

Flexible conduit may be installed onto one or both sides of the actuator (refer to Figure-6 and Figure-7). Install each conduit as follows:

1. Determine the side of the actuator to which the flexible conduit is to be attached.

2. Remove the knockout (e.g., with channel lock pliers) on the selected side of the actuator. Refer to

3. Make the required connections. Refer to Figure-1 for a wiring diagram of a typical application.

4. Slip the conduit onto the base, over the ribs. Refer to Figure-6 and Figure-7.

5. If flexible conduit is to be installed on both sides of the actuator, repeat the preceding steps to install the second conduit.

Figure-5.

Figure-5 Removal of Knockout on Actuator Base.

Figure-6 Flexible Conduit Installation to Either Side of Actuator.

Figure-7 MA-5200 and MA-5300 Series Wiring with Separation

Transformer

(AM-610 shown)

4 x 4

Conduit

Box

Cover Plate

Leave Knockout in place

Low voltage motor leads may be connected to a Class 2 circuit if routed separately from wiring that is other than Class 2

The line voltage auxiliary switch leads must be separated from Class 2 motor circuit wiring.

Note: Class 2 circuit wiring must be routed separately from the wiring from other circuits. Do not route Class 2 circuit wiring in the same conduit box with the line voltage transformer

Typical for 24 Vac

models (MP-5XX3)

Figure-8 Cover Plate Knockout Removal.

Cover Plate

Knockout

1/8" (3 mm) maximum

Use TAC 11-1612, Bridgeport 1102-DC, or equivalent

Figure-9 1/2" Conduit Bushing.

for Class 2 and Line Voltage Circuits.

6. Install the cover plate with two screws. The cover plate and two screws are supplied with the actuator.

Installing Conduit Box Onto Actuator

Installation of a conduit box allows for the attachment of one or more thin wall conduits to the actuator. This procedure also serves as an optional method for connecting flexible conduit to the actuator.

1. Remove the knockout from the cover plate supplied with the actuator . Refer to Fig ure-8 .

2. Slip the actuator’s leads through a standard 1/2” conduit bushing (Figure-9, not supplied) and the knockout hole in the cover plate. Refer to Figure-10.

3. Seat the conduit bushing in the base.

Figure-10 Conduit Bushing and Cover Plate Installation.

1/2" Conduit Bushing

(not supplied)

Base

Cover Plate

Figure-11 Attachment of Conduit Box to Conduit Bushing.

4. Install the cover plate, using the two screws provided.

5. Loosely install the conduit box and the locknut onto the conduit bushing. Refer to Figure-11.

6. Tighten the locknut as follows: a. Tilt the conduit box approximately 30 degrees counterclockwise, relative to the

actuator. b. Finger-tighten the locknut against the conduit box. c. Rotate the conduit box clockwise until it is aligned with the actuator. This will tighten

the locknut.

7. Make the required wiring connections. Refer to Figure-1 for a wiring diagram of a typical application.

8. Install the conduit to the conduit box as required.

Note: As shown in Figure-10, the hole in the cover plate of the actuator conduit housing is sized to accept both British standard M20 (20 mm) conduit connectors and 20 mm-to-PG16 adaptors for use with DIN PG16 connectors. (Follow the steps for installing the conduit box to the actuator.)

Linkage Assembly Damper

Spring returns open

on loss of power

Open

ExtendRetract

Damper Shaft

Spring returns open

on loss of power

Open

Extend Retract

Damper Shaft

Note: Each actuator in the MA-5x3x series is provided with a factory-installed damper linkage. No separately-ordered linkage is required.

Caution: Do not twist or exert any force on the actuator housing during installation. Either turn the base by hand or, if necessary, use a 1-5/8" (41 mm) open-ended wrench (TOOL-

37) on the flats provided on the actuator base, or on the valve body mounting nut. (Refer to Figure-2.)

1. Determine the best mounting position for the actuator as follows: a. Determine, from the system requirements, if the damper should spring-return to the

open position (refer to

Figure-12) or closed position (refer to Figure-13) whenever power is lost to the actuator. For example, an outside air damper actuator is typically linked so as to retract (spring-return) to the damper’s fully closed position (safe position).

Figure-12 Dampers Open When Actuator Retracts

(Spring-Returns Open on Power Loss).

Figure-13 Dampers Open When Actuator Extends

(Spring-Returns Closed on Power Loss).

b. Be sure to allow adequate working space around the actuator mounting location to

mount the actuator, link it to the damper, and wire it into the system (refer to Figure-20).

c. If possible, select a mounting position such that, at mid-stroke, the actuator crank

arm and the damper crank arm on the drive shaft are each at a 90° angle to the damper rod (Refer to

Figure-14). This is the recommended mounting position. It

may be necessary to swivel the actuator linkage to arrive at this mounting location.

Mounting

Points

Actuator

Crank Arm

Mid-Stroke Position

Angle from Mid-Stroke Position (See Table)

Position of Linkage Connector (See Table)

Damper

Shaft

Damper

Crank Arm

Linkage

Connectors

Damper

Rod

Mounting

Points

Required

Damper

Rotation

Angle

from

Mid-Stroke

Position

Position of

Linkage

Connector

60° 90°

30° 45°

2" (50 mm)

1-1/2" (38 mm)

Figure-14 Recommended Actuator/Damper Mounting.

d. Consider the damper rod length when positioning the actuator in relation to the

damper. A damper rod that is too long is not rigid enough to provide good control, while a damper rod that is too short makes adjustment difficult.

2. Position the actuator on the duct and mark the location of the mounting holes, using the actuator mounting bracket as a template (refer to Figure-20).

3. Drill or punch the mounting holes in the duct for the appropriate 1/4" (6 mm) diameter screws or bolts. The actuator must be mounted firmly enough to prevent excessive actuator movement under normal damper loading. If there is excessive actuator movement, the damper may not fully open or close.

4. Mount a ball joint connector in the slot on the damper crank arm. To achieve 90° of damper rotation, position the connector 1-1/2" (38 mm) from the centerline of the shaft hole on the crank arm. For 60° of damper rotation, position the connector 2" (50 mm) from the shaft hole centerline. Typically, 60° to 70° of rotation (maximum is 90°) is sufficient to permit almost maximum air flow through the dampers. (Refer to

5. Rotate the damper to its open position. Install and secure the damper crank arm (with ball joint connector) to the damper shaft, positioning the crank arm as fo llows (Refer to Figure-14):

a. To achieve 60° of damper rotation, position the crank arm so that it is pointed

towards the actuator at 30° from its mid-stroke position.

b. To achieve 90° of damper rotation, position the crank arm so that it is pointed

towards the actuator at 45° from its mid-stroke position.

6. Install the damper rod by sliding one end through the ball joint connecto r moun ted on the damper crank arm, and the other end through the straight connector on the actuator crank arm. Tighten the nut on the actuator crank arm’s straight connector. Cut off any excess length of damper rod.

7. For normally open dampers, tighten the nut on the ball joint connector on the damper crank arm. T o ensure that the damper closes completely , make adjustments so that the actuator is 1/16" (1.6

mm) from the extended end of stroke when the damper closes.

Verify and, if necessa ry, make final adjustments during system checkout.

8. For normally closed dampers, rotate the damper crank arm until the damper is closed. While holding the damper closed, tighten the nut on the ball joint connector on the damper crank arm. T o ensure that the damper closes completely , make adjustments so that the actuator is 1/16" (1.6 closes.

Final adjustment of the actuator and damper must be performed when the system is

powered and functioning. Refer to the CHECKOUT section to ensure that the damper is linked correctly.

mm) from the retracted end of stroke when the damper

Figure-14).

Valve

Position Indication and

Switch Action Cam

Auxiliary Switch

Adjustment Screw

MA-52XX-500

Series

For valve assembly details refer to AV-600, Valve Linkage Kit General Instructions, F-26279 or AV-601, Linkage Extension Kit General Instructions, F-26280. Refer to

Figure-21 for external dimensions of the valve actuator.

Adjustments Auxiliary Switch (MA-5xxx-500)

The switching point is adjustable over the entire actuator stroke and is pre-set at the factory to close the N.C. contacts at the retracted end of stroke. Turning the switch adjustment screw CW (using TOOL-12), adjusts the make (or break) point closer to the extended end of stroke. (Refer to

Figure-15).

Figure-15 Auxiliary Switch Actuation Point Adjustment and

Position Indication for MA-5xxx-500 Series.

CHECKOUT

After the entire system has been installed and the actuator has been powered up, perform the following checks for proper system operation.

Caution: Never power the actuator without a spring return linkage attached.

Positioning with Controller

If the sensed media is within the controller’s setpoint range, the actuator can be positioned by adjusting the controller setpoint up and down. Check for correct operation of the actuator (valve or damper) while the actuator is being stroked.

Go, No-Go Test 1. Apply power to the actuator. The actuator motor should run and the actuator shaft sh ould

extend.

2. Remove power from the actuator. The actuator motor should stop running and the actuator shaft should spring-return to the retracted position.

THEORY OF OPERATION

Hydraulic

Piston Assembly

Oil-Filled Case

Check Valve

Electric Pump

Switch/Thermostat

To AC Power

Source

Orange Brown

Red/White

Auxiliary Switch Wires

Switch Point Adjustment

for Auxiliary Switch

Position Indication and

Switch Action Cam

Auxiliary

Switch

3/4"

(19 mm)

1-5/16"

(33 mm)

1-5/16"

(33 mm)

MA-521X-XXX MA-521X-XXX-2 MA-521X-XXX-3

Obsolete Actuators

Current Actuator

Refer to Figure-16. The permanently sealed, oil-filled case contains a movable hydraulic piston assembly and an electric pump for the hydraulic system. The pump generates a fluid pressure which is transmitted to the top of the piston, creating a hydraulic force which drives the piston downward. Opposing the hydraulic force is the spring of the valve or damper linkage. When the hydraulic force becomes great enough to overcome the opposing spring force, the piston translates downward, extending the output shaft. The electric pump is powered by the input supply voltage and runs whenever the voltage is applied. When power is removed from the pump, it stops running, decreasing the hydraulic force above the piston. This allows the spring force to overcome the hydraulic force, pushing the piston upward and retracting the output shaft. The oil above the piston is allowed to flow backward through the pump by means of a check valve.

REPLACEMENT PARTS

Figure-16 MA-5xxx Series Actuators.

The installation of replacement actuators, in place of the obsolete series of MA-5xxx actuators (refer to Figure-17), may require additional items. These replacement items are required for the following reasons:

1. The AM-601 damper linkage is used to convert base actuators to damper actuators when damper models are not available.

2. The AM-602 spacer is used when current actuators are installed on old linkages (refer

Figure-18 and Figure-19).

3. The AE-249 transformer (208 Vac to 120 Vac) is used when replacing 208 Vac actuators (MA-5xx2) with 120

Figure-17 Current and Obsolete Actuators.

V ac actuators (MA-5xx 0).

MAINTENANCE

Spacer

AM-602

1-5/8"

(41mm approx.)

1-5/8"

(41mm approx.)

Obsolete Linkages

AV-315, AV-317, AV-319-10,

& AV-319-20

Current Linkage

AV-600

2-3/16"

(56mm approx.)

Strap

Obsolete AM-601

Current AM-601-0-0-2

No Strap

TROUBLESHOOTING

Figure-18 Current and Obsolete Valve Linkages.

Figure-19 Current and Obsolete Damper Linkages.

The actuator is sealed in oil and requires no maintenance. Regular maintenance of the total system is recommended to assure sustained, optimum

performance.

Use the following steps to locate malfunctions:

1. Check the actuator by applying the proper supply voltage.

2. The motor should run when power is applied. If it does not run, the actuator is inoperative and should be replaced.

3. While the motor is running, the actuator should extend. If it does not extend, check the mechanical linkage for any damage or misadjustment which could prevent the actuator from extending. If the mechanical linkage is inoperative, adjust the linkage or replace the damaged components, as applicable. If the mechanical linkage moves correctly and freely, the problem lies in the actuator and it must be replaced.

4. If applying power directly to the actuator results in correct operation of the actuator, the actuator and linkage are functional, and the problem lies in the wiring or thermostat. Repair or replace the wiring or thermostat, as applicable.

FIELD REPAIR

None. Replace an inoperative actuator with a functional unit.

DIMENSIONAL DATA

Actuator

(4) 1/4"

(6 mm)

(50 mm)

5/16"

(8 mm)

4-5/8"

(117 mm)

5-3/4"

(146 mm)

(203 mm)

3-1/4"

(83 mm)

4-1/4"

(108 mm)

4-1/4"

(110 mm)

5-1/2"

(140 mm)

4-3/4"

(120 mm)

3-1/4" Dia.

(83 mm)

6-3/4"

(171 mm)

2-9/32"

(58 mm)

3-23/32" (94 mm)

1-3/8"

(35 mm)

Figure-20 Damper Linkage Assembly Dimensions.

Figure-21 Actuator Dimensions.

On October 1st, 200 9, TA C became the Buildings business of its parent company Sc hneider Electric. This document refle cts the visual identi ty of Sc hneider El ectric, however there r emains r eferences to T AC as a corpor ate brand i n the body copy. As each document is updat ed, the body copy w ill be change d to refl ect appropriate

corporate brand changes.

Copyright 2010, Schneider Electric All brand names, trademarks and registered trademarks are the property of their respective owners. Information contained within this document is subject to change without notice.

F-15070-15

Schneider Electric MA-5200 Series, MA-5300 Series Data Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual

Application

The MA-5200 series and MA-5300 series actuators a re used for two-position control of valves and dampers which require a return to the normal position upon power interruption.

Features

Applicable Literature

SPECIFICATIONS

Regulating Equipment). CSA, Certified for use in Canada by Underwriters Laboratories. Canadian Standard C22.2 No. 24-93. European Community, EMC Directive (89/336/EEC). Low Voltage Directive (72/23/EEC).

Table-1 Model Chart for Damper Actuators.

Table-2 Model Chart for Valve Actuators. Also for Damper Actuators with Field Assembled Damper Linkages.

Table-3 Maximum Allowable Ambient Air Temperature for Valve Actuators.

TYPICAL APPLICATIONS (wiring diagrams)

Figure-1 Typical Wiring for MA-5xxx Series Actuators.

Requirements • Job wiring diagrams.

Mounting Do not twist or exert any force on the actuator housing during installation. Either turn the

Figure-2 Housing and Base Location.

1. Install all two-way valves so that they close against the flow . An arrow o n the valve body or tag indicates proper flow direction.

2. Always install three-way mixing valves with two inlets and one outlet.

3. Always install three-way diverting valves with one inlet and two outlets.

4. Actuators can be mounted in any upright position above the centerline of the valve body.

Wiring Requirements Power Leads

Table-4 Power Wiring Data.

Figure-3 Wiring of Multiple MA-52xx Series Actuators to Single Power Source.

Wiring Connections Wire Lead Connections (No Conduit)

Figure-4 Connection of Wire Leads (No Conduit).

1. Determine the side of the actuator to which the flexible conduit is to be attached.

3. Make the required connections. Refer to Figure-1 for a wiring diagram of a typical application.

4. Slip the conduit onto the base, over the ribs. Refer to Figure-6 and Figure-7.

5. If flexible conduit is to be installed on both sides of the actuator, repeat the preceding steps to install the second conduit.

Figure-5 Removal of Knockout on Actuator Base.

Figure-6 Flexible Conduit Installation to Either Side of Actuator.

Figure-8 Cover Plate Knockout Removal.

Figure-9 1/2" Conduit Bushing.

6. Install the cover plate with two screws. The cover plate and two screws are supplied with the actuator.

1. Remove the knockout from the cover plate supplied with the actuator . Refer to Fig ure-8 .

2. Slip the actuator’s leads through a standard 1/2” conduit bushing (Figure-9, not supplied) and the knockout hole in the cover plate. Refer to Figure-10.

3. Seat the conduit bushing in the base.

Figure-10 Conduit Bushing and Cover Plate Installation.

Figure-11 Attachment of Conduit Box to Conduit Bushing.

4. Install the cover plate, using the two screws provided.

5. Loosely install the conduit box and the locknut onto the conduit bushing. Refer to Figure-11.

6. Tighten the locknut as follows: a. Tilt the conduit box approximately 30 degrees counterclockwise, relative to the

7. Make the required wiring connections. Refer to Figure-1 for a wiring diagram of a typical application.

8. Install the conduit to the conduit box as required.

Linkage Assembly Damper

1. Determine the best mounting position for the actuator as follows: a. Determine, from the system requirements, if the damper should spring-return to the

Figure-14 Recommended Actuator/Damper Mounting.

2. Position the actuator on the duct and mark the location of the mounting holes, using the actuator mounting bracket as a template (refer to Figure-20).

5. Rotate the damper to its open position. Install and secure the damper crank arm (with ball joint connector) to the damper shaft, positioning the crank arm as fo llows (Refer to Figure-14):

Adjustments Auxiliary Switch (MA-5xxx-500)

CHECKOUT

Positioning with Controller

Go, No-Go Test 1. Apply power to the actuator. The actuator motor should run and the actuator shaft sh ould

2. Remove power from the actuator. The actuator motor should stop running and the actuator shaft should spring-return to the retracted position.

THEORY OF OPERATION

REPLACEMENT PARTS

Figure-16 MA-5xxx Series Actuators.

1. The AM-601 damper linkage is used to convert base actuators to damper actuators when damper models are not available.

Figure-17 Current and Obsolete Actuators.

MAINTENANCE

TROUBLESHOOTING

Figure-18 Current and Obsolete Valve Linkages.

Figure-19 Current and Obsolete Damper Linkages.

1. Check the actuator by applying the proper supply voltage.

2. The motor should run when power is applied. If it does not run, the actuator is inoperative and should be replaced.

4. If applying power directly to the actuator results in correct operation of the actuator, the actuator and linkage are functional, and the problem lies in the wiring or thermostat. Repair or replace the wiring or thermostat, as applicable.

FIELD REPAIR

DIMENSIONAL DATA

Figure-20 Damper Linkage Assembly Dimensions.

Figure-21 Actuator Dimensions.