Schneider Electric Damper Actuators User Guide 8 Pages

Schneider Electric Damper Actuators User Guide
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Schneider Electric Damper Actuators are pneumatic actuators used to control dampers, mixing boxes, and air valves in heating, ventilating, and air conditioning systems. They have an 8-inch² effective area and a maximum air pressure of 30 psig. The actuators are constructed from die-cast aluminum and have a beaded molded neoprene diaphragm. They have a spring that retracts the actuator shaft on loss of air pressure and can be mounted in any position. The actuators come with a mounting bracket (except MK-3300 Series end mounting) and a connector for a 5/16" diameter push rod.

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Schneider Electric Damper Actuators User Guide | Manualzz

MK-3000 Series, MK2-3000

Series, MK4-3000 Series

Pneumatic Damper Actuators

General Instructions

APPLICATION

Proportional pneumatic actuator with 8 in.

2

(52 cm

2

) effective area used to control dampers, mixing boxes, air valves, etc., in heating, ventilating and air conditioning systems,

MK2-31X1 used for high temperatures.

SPECIFICATIONS

Construction:

Housing, Die cast aluminum.

Diaphragm, Beaded molded neoprene. MK2-31X1 only -

Beaded molded silicone.

Stroke: See Table 2.

Start Point: Adjustable on most models ± 1 psi, see Table 2.

Spring: Retracts actuator shaft on loss of air pressure.

Maximum Air Pressure: 30 psig (207 kPa).

Ambient Temperature Limits:

Shipping, -40 to 160

°F (-40 to 71°C).

Operating, -20 to 160

°F (-29 to 71°C).

MK2-31X1 only,

Shipping, -40 to 250

°F (-40 to 121°C).

Operating, -20 to 250

°F (-29 to 121°C), for 30 minute exposure 450

°F (232°C).

Air Connections: 1/8” FNPT.

Mounting: In any position. Mounting bracket (except

MK-3300 Series end mounting) and connector for 5/16" (8 mm) diameter push rod included with actuator.

Dimensions: 12" high x 5-7/8" wide x 5-1/2" deep (305 mm x 143 mm x 140 mm)

Table-1 Nominal Damper Area For Proportional Control a

ACCESSORIES

AK-42309-500

AM-111

AM-112

AM-113

AM-115

AM-122

AM-123

AM-125

AM-125-048

AM-132

AM-161-3

AM-301

AM-530

AM-532

AM-533

AM-534

AM-535

AM-536

AM-545

TOOL-95

Positive positioner and linkage, do not use with

MK2-3100 series

Crank arm for 5/16 " diameter damper shaft

Crank arm for 3/8 " diameter damper shaft

Crank arm for 1/2 " diameter damper shaft

Crank arm for 7/16 " diameter damper shaft

Linkage connector straight type

Damper clip

5/16 " x 20 " damper rod

5/16 " x 48 " damper rod

Ball joint connector

Damper linkage kit

90

°

mounting bracket for pivot mounting

Crank arm for 1/2 " diameter damper shaft holes for 3-1/2 " and 4-1/2 " stroke

Bolt-on frame lug and damper blade clip kit

Actuator shaft extension

Pivot stud for pivot mounting

Clevis for pivot mounting

Mounting plates for pivot mounting on ducts or damper frame

Rod end connector for 5/16 " (10 mm) dia. rods

Pneumatic calibration tool kit

Actuator Part

Number

MK-3101

MK-3101-108

MK2-3101

MK4-3101

MK-3111

MK2-3111

MK-3121-109

MK-3121

MK2-3121

MK-3141

MK4-3141

MK-3151

MK-3161 b

MK-3201

MK-3211

MK-3221

MK-3311-109

MK-3321-102

MK-3801

MK4-3801

MK-3811

MK-3821

MK-3841

MK4-3841

MK4-3111 c

MK4-3811 c

MK4-3121 d

MK4-3821 d

Parallel Blades ft

2

11.6

23.2

34.8

m

2

1.07

2.15

3.23

Opposed Blades ft

2

15

30

45 m

2

1.39

2.79

4.18

b c d a

For two-position control use proportional rating of the same actuator with positive positioner. Damper ratings are nominal and based on standard

(not low leakage) dampers at 1" (25.4 mm) W.C. static pressure and 2000 fpm (10 m/s) velocity.

Requires 20 psi be available to the actuator.

Requires minimum 15 psi be available to the actuator.

Proportional control with positioner (8-13 spring, 20 psi supply).

Printed in U.S.A. 1/10

© Copyright 2010 Schneider Electric All Rights Reserved.

F-12586-11

Table-2 Specifications.

Maximum Force b

Part Number

Nominal

Operating

Range

Starting

Pressure

Nominal

Stroke a

Return

Stroke

Based on

1.5 psi

(10 kPa)

Pressure to

Actuator lb.

N

15 psi

(103 kPa)

Supply

Dual Press.

System

Power Stroke

15 psi

(103 kPa)

Supply

Single

Press.

System d lb. N

20 psi

(138 kPa)

Supply

Single or

Dual Press.

System lb.

N

MK-3101-108 psig

3-7.2

kPa

21-50 psig

3 ± 1 kPa

21 ± 7 in. (mm)

3 (76)

Adjustable

2 to 4 (51 to 102)

12 53 lb.

50

N

226 62 276 102 454

MK-3101

MK2-3101

MK4-3101 e

MK-3111

MK2-3111

MK4-3111

MK-3121

MK-3121-109

MK2-3121 e

MK4-3121 e

MK-3141

MK4-3141 e

3-8

3-8

5-10

5-10

8-13

21-55

21-55

34-69

34-69

55-90

3 ± 1

3 ± 1

5 ± 1

5 ± 1

8 ± 1

21 ± 7

21 ± 7

3 ± 7

34 ± 7

55 ± 7

3 1/2 (89)

Adjustable

2 to 4 (51 to 102)

12

12

28

28

52

53

53

125

125

231

44

44

28

28

4

196

196

125

125

18

56

56

40

40

16

249

249

178

178

71

96

96

80

80

56

427

427

356

356

249

MK-3151

MK-3161

MK-3201

MK-3211

MK-3221

MK-3311-109

MK-3321-102

8-13

3-13

3-6

9-12

3-6

11-17

3-8

21-41

62-83

21-41

76-117

21-55

5-10 34-69

8-13

5-10

8-13

55-90

21-90

55-90

34-69

55-90

8 ± 1

3 non-adj

3-6

3-6

3 ± 1

5 ± 1

8 ± 1

5 ± 1

8 ± 1

55 ± 7

21 non-adj

21 to

41

21 to

41

21 ± 7

2-3/4 (70)

Adjustable

2 to 2-3/4

(51 to 70)

34 ± 7

55 ± 7

90 o

Rotation

Typical,

Adjustable

1.2 to 4.4

(30 to 111)

34 ± 7 3-1/2 (89)

Adjustable

55 ± 7

2 to 4 (51 to 102)

52

12

12

12

12

28

52

28

52

231

53

53

53

53

125

231

125

231

4

4

12

0

44

28

4

28

4

18

18

53

0

196

125

18

125

18

16

16

24

0

56

40

16

40

16

71

71

107

0

249

178

71

178

71

56

56

64

24

96

80

56

80

56

249

249

285

107

427

356

249

356

249

MK-3801

MK4-3801 e

MK-3811

3-8 21-55 3 ± 1 21 ± 7 12 53 44 196 56 249 96 427

MK4-3811

MK-3821

MK4-3821 e

5-10 34-69

5-10 34-69

8-3 55-90

5 ± 1

5 ± 1

8 ± 1

34 ± 1

34 ± 1

55 ± 1

55 ± 1

21 non-adj

3-1/2 (89)

Adjustable

2 to 4 (51 to 102)

28 125 28

28 125 28

52 231 4

125

125

18

40

40

16

178

178

71

80

80

56

356

356

249 c d a b e

MK-3841

MK4-3841 e

8-13

3-13

55-90

21-90

8 ± 1

3 non-adj

52

12

231

53

4

4

18

18

16

16

71

71

56

56

Factory setting required for published operating range.

Force and torques based on factory set stroke and starting pressure.

Nominal torque for actuators without positive positioner is based on 1.5 psi pressure change at the actuator.

Adjust pressure reducing valve so that listed pressures are available at the actuator.

Factory installed positive positioner (AK-42309-500) start point adjustable 2 to 10 psi with range adjustable 2 to 10 psi.

249

249

79

79

Nominal Torque c

Proportional Control

b

15 psi

(103 kPa)

Supply Dual

Press.

System

15 psi

(103 kPa)

Supply

Single Press.

System

20 psi

(138 kPa)

Supply

Single or

Dual Press.

System

d

lb-in.

N-m lb-in.

N-m lb-in.

N-m

18

21

21

21

49

7

7

7

21

0

21

21

7

21

7

21

21

49

7

7

7

2.03

2.37

2.37

2.37

5.54

79

79

79

2.37

0

2.37

2.37

.79

2.37

.79

2.37

2.37

5.54

79

18

21

21

21

49

21

28

21

21

0

21

21

21

21

21

21

21

49

21

28

21

2.03

2.37

2.37

2.37

5.54

2.37

3.16

2.37

2.37

0

2.37

2.37

2.37

2.37

2.37

2.37

2.37

5.54

2.37

3.16

2.37

18

21

21

21

49

21

91

21

21

21

21

21

21

21

21

21

21

49

21

91

21

2.03

2.37

2.37

2.37

5.54

2.37

10.28

2.37

2.37

2.37

2.37

2.37

2.37

2.37

2.37

2.37

2.37

5.54

2.37

10.28

2.37

2 © Copyright 2010 Schneider Electric All Rights Reserved.

F-12586-11

Figure-1 MK-3100 Series Dimensions.

1

Figure-2 MK-3200 Series Dimensions.

Mounting plate for MK-3101-108 and MK-3300-102

Series Actuators

Figure-3 MK-300 Series Dimensions

2

.

1.

All dimensions shown in the Instruction Sheet are in inches.

F-12586-11

Figure-4 MK-3800 Series Dimensions.

2.

Typical Model shown. Linkage, and air connection details may vary from

Model to Model.

© Copyright 2010 Schneider Electric All Rights Reserved.

3

MK-3100 Series Typical Mounting

Accessories Required for Mounting Per Figure 5

1 — AM-113 Crank arm.

1 — AM-122-0-0-2 or AM-132-0-0-2 ball joint.

1 — AM-125 link rod 5/16-inch x 20 inches.

To mount proceed as follows. Refer to Figure 5.

1. Measure a minimum of 8 inches from damper shaft in the direction of actuator location.

2. Hold actuator up to duct with actuator shaft approximately

1-1/2 inches above (N.C.) or below (N.O.) damper shaft and mark mounting holes.

3. With drill or punch, pierce holes marked in Step 2.

4. Mount actuator to duct.

5. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft hole.

6. Attach crank arm to damper shaft at approximately 45

° angle, from vertical, toward actuator with damper in the normal actuator retracted position.

7. Connect actuator ball joint to crank arm ball joint with

5/16-inch diameter rod. Cut off excess rod.

8. Refer to Checkout.

Figure-5 MK-3100 Series Typical Mounting.

MK-3300 Series Typical Mounting

Note: MK-3300 Series Models are designed for Mixing Box applications. Mounting, Linkage, and air connection details vary among Models. See Actuator Selection Sheet F-13795 for more information.

Figure-6

MK-3200 Series Typical Mounting

Accessories Required for Mounting Per Figure 7

2 — AM-113 crank arm.

2 — AM-122-0-0-2 or AM-132-0-0-2 ball joint.

1 — AM-125 link rod 5/16-inch x 20 inches.

To mount proceed as follows. Refer to Figure 7.

1. Locate actuator on a surface perpendicular to the damper shaft, with the actuator rotary shaft approximately in line with the damper shaft.

2. Hold actuator up to duct and mark mounting holes.

3. With drill or punch, pierce holes marked in Step 2.

4. Mount actuator to duct.

5. Attach crank arm to actuator shaft at approximately 45

° angle.

6. Attach ball joint to crank at approximately 2-1/2 inches from center of shaft hole.

7. Attach crank arm to damper shaft an approximately 45

° angle, from vertical, toward actuator with damper in the normal actuator retracted position.

8. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft.

9. Connect actuator ball joint to crank arm ball joint with

5-1/6-inch diameter rod. Cut off excess rod.

10. Refer to Checkout.

Accessories Required for Mounting Per Figure 8

1 — AM-125 link rod 5/16-inch x 20 inches.

1 — Connector as required for connection to driven device.

To mount proceed as follows. Refer to Figures 6 and 8.

1. Drill holes in mounting surface as shown in Figure 6.

2. Mount actuator.

3. Connect actuator.

4. Refer to Checkout.

Figure-7 MK-3200 Series Typical Mounting.

4 © Copyright 2010 Schneider Electric All Rights Reserved.

F-12586-11

Figure-8 MK-3300 Typical Mounting.

MK-3800 Series Typical Mounting

Accessories Required for Mounting of Actuator Per

Figure 9 through 11

1— AM-532 bolt-on frame bracket kit.

Note: Bracket kit includes the frame bracket, leaf connector, and necessary screws or bolts and nuts.

To install the actuator proceed as follows:

1. Prepare the damper by drilling necessary holes, etc. See

Figures 11 and 15 for bolt-on bracket.

2. Attach bracket and leaf connector to damper.

3. Attach actuator mounting plate to damper bracket.

4. Install pivot stud to actuator mounting plate.

5. Install actuator to pivot stud and connect clevis to blade connector.

Note: Adjust clevis as needed to align clevis and leaf connector.

Figure-10 MK-3800 Series Typical Mounting,

Normally Closed.

Preparing Damper for Frame Mounting of Actuator

Refer to Figures 11 and 15 for required holes, etc. for AM-532.

Figure-9 MK-3800 Series Typical Mounting, Normally Open.

Figure-11 Typical Bolt-On Bracket Mounting.

Accessories Required for Mounting of Actuator Per

Figure 12

1 — AM-530 crank arm.

To install proceed as follows:

1. Attach mounting plate to duct or wall with damper shaft protruding through locator hole in mounting plate. If this is not possible, additional shaft extensions may be used to allow locating the actuator farther from the damper shaft.

Each extension provides 4 inches of extension to the actuator shaft and may be used in multiples.

2. Install the pivot stud to the mounting plate.

3. Install actuator on pivot stud.

4. Install crank arm on damper shaft at approximately 45

° angle from vertical toward actuator.

F-12586-11

© Copyright 2010 Schneider Electric All Rights Reserved.

5

Note: Figure 12 shows position for normally closed.

5. Manually position damper to full retracted actuator position and tighten crank arm in position described in

Step 4.

6. Connect clevis to crank arm in hole closest to damper shaft. If necessary adjust clevis and/or extensions.

7. Refer to Checkout.

Figure-12 MK-3800 Typical External Pivot Mounted.

Figure-13 Mk-3800 Series Mounting Plate.

6

Figure-14 MK-3800 Series Clevis.

Figure-15 AM-532 Bolt-On Frame Bracket.

© Copyright 2010 Schneider Electric All Rights Reserved.

F-12586-11

CHECKOUT

After installation, the actuator should be checked to insure proper damper operation. To check the actuator and linkage, proceed as follows:

1. Check the linkage with the actuator in the retracted position for proper return force. The actuator should be linked so that on a normally closed application, the damper is closed with no more than 1/16-inch compression of the spring. (The actuator shaft would return an additional

1/16-inch if the linkage were disconnected.) For a normally open application, the actuator should be linked with the actuator fully retracted.

2. Apply air pressure to the actuator or pilot port of a positioner and check the linkage as follows. On a normally closed application, the damper should be just full open when the actuator piston reaches the stops in the actuator. On a normally open application, the damper should reach the closed position with no more than

1/16-inch stroke remaining to reach the actuator stops.

3. The above can be obtained through adjustment of the ball joint in the crank arms or by adjustment of the actuator stops. The amount of thread engagement of the actuator ball joint or extension shaft may also be used to assist in proper linking.

Connection of Air Line: On pivot mounting arrangements,

Figures 9, 10 and 12, control air lines MUST be terminated at the actuator with at least 6 inches of flexible tubing to allow for pivoting of the actuator. On mounting arrangements, Figures

5, 7 and 8, control air lines may be connected directly with either copper or plastic tubing, as required by application.

Caution: On MK2-31X1 Series, metal connectors and tubing must be used.

Adjustable Starting Pressure: Actuators are available with adjustable starting pressure. To adjust the starting pressure, turn adjusting nut supporting the spring clockwise to increase and counterclockwise to decrease the starting pressure. Each rotation of the adjusting nut changes the starting pressure .04 psi (.28 kPa).

Adjustable Stroke Length: Stroke length is determined by the two stops located on either side of the actuator. Stops are set for 3-1/2-inch stroke. mark this point and measure toward the diaphragm end of the actuator to reduce the stroke or away from the diaphragm end to increase the stroke.

Maximum stroke length is 4 inches. By increasing the stroke length, the force available to resist an opposing force is decreased while decreasing the stroke length increases this force.

Diaphragm Replacement: If the actuator diaphragm should leak, it may easily be replaced by removing the four screws holding the top power housing. Make sure that shaft swivel joint is in place on the end of the shaft. Remove the screws and old diaphragm. Roll the new diaphragm inside out and install over the piston making sure the circular bead is facing up. Put the top power housing back in place making sure the bead on the diaphragm is in the housing groove and the screw holes are lined up. Tighten housing screws.

UNITS WITH FACTORY MOUNTED

POSITIVE POSITIONERS

Figure-16 Typical Factory Mounted Positioner.

For Actuators with Positioners:

Note: If actuator is frame pivot mounted, the actuator must be mounted to the left-hand frame. If actuator is mounted external, Figure 12 must be on right-hand side of duct.

Install fittings required in Ports 2 and 3.

ADJUSTMENTS

Refer to Figure 16.

Range Adjustment: Adjustable 2 to 10 psig (14 to 69 kPa).

Factory set at 5 psig (34 kPa). Range is the pressure change required to produce full actuator stroke.

If adjustment is required (see Figure 16), with a small screwdriver loosen screw on range slider approximately 1/2 turn.

Move the graduated range slider until desired pressure mark lines up with center of screw and tighten screw.

Start Point: Adjustable 2 to 10 psig (14 to 69 kPa). Start point is the pressure at which the actuator just begins to extend.

See Figure 16.

Connect main air supply to Port 3 and a variable air supply to

Port 2.

1. Adjust variable air supply on Port 2 to desired start point pressure.

2. Adjust the start point screw with small screwdriver until actuator just starts to extend.

3. Gradually raise pressure on Port 2 until actuator is fully extended, and readjust range slider to obtain desired range if further adjustment is necessary.

4. Remove variable air supply from Port 2 and connect to controller output.

F-12586-11

© Copyright 2010 Schneider Electric All Rights Reserved.

7

Note: If slave damper actuators are to be controlled, tee into the tubing from Port 1 to the actuators. All dampers must be mechanically interconnected.

Figure-17 Typical Piping Diagram with Factory Mounted Positive

Positioner.

On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric, however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect 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-12586-11

Schneider Electric

1354 Clifford Avenue

P.O. Box 2940

Loves Park, IL 61132-2940 www.schneider-electric.com/buildings

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