Greenheck MP-323 Bedienungsanleitung

MP-323 01-97

Motor Pack Contents

1. Actuator

2. Actuator Bracket

3. Actuator Arm Assembly

4. Connecting Links

5. Actuator Spring

All necessary hardware included

Actuator Specifications

The MP-323 motor pack uses a single phase, 60hz, shaded

pole, stall type impedance protected electric actuator.

Specific model depends on the voltage selected.

Greenheck Part #453446

Black

Green

Actuator Wiring Diagram

Field Installation Instructions for

Multi Products

MP-323 Motor Pack

UL Listed Electric Actuators With Spring Return

For Use With WD-323 Dampers

VENCO PRODUCTS

GREENHECK

1. The MP-323 motor pack is designed for installation on

Model WD-323 backdraft dampers only. When properly

installed, the damper will be vertically mounted to

exhaust air.

2. Position the motor bracket into the inside lower left

corner of the damper.

3. While holding the bracket snug into the corner and

keeping it square to the damper frame, trace the

location of the two mounting holes onto the damper

frame.

4. Mount the motor pack to the damper frame using

hardware provided.

5. Connect the motor arm to the blade as shown in Detail

“A”.

6. With the blades in the fully open position, rotate the

motor arm away from the damper until it seats firmly

against the rubber stop. Hold the arm in this postion

while tightening the two adjustment screws on the

motor linkage. (Adjustment screws should be placed as

far apart as possible to provide greater stability to the

linkage.)

7. Release the motor arm to allow the blades to close.

8. If the damper fails to function properly, check for one of the

following causes:

A. Motor pack fails to close the damper completely.

• Check for an ‘out of square’ or racked damper.

• Insufficient spring tension.

B. Motor pack fails to open the damper completely.

• Check for an ‘out of square’ or racked damper.

• Excessive spring tension.

• Excessive voltage drop.

C. Motor pack fails to function.

• Check for correct voltage.

• Check for proper wiring.

Detail "A"

Adjustment Screws

Mounting Hardware

Wiring Diagram

Black

Green

Motor Packs MP-323 Voltages

Are 1-ø, 60 Hz 24 115 230 440

Speed (RPM) 1.8 1.8 1.8 1.8

Running Amps 1.4 0.22 0.12 0.065

Stall Amps 1.6 0.24 0.14 0.075

Identification # 2651 UL-2-2469 UL-3-2495 UL-4-2576

Greenheck's MP-323 motor packs utilize single phase, 60 HZ (50 HZ optional) damper actuators and are supplied in one of the

following voltages: 24, 115, 230, or 440 volts. The voltage of the actuator is stamped into the housing near the output shaft. For

277, 575 or 600 volt operation, an optional transformer and a 115 volt motor pack is required. The 230 volt model can also be

used for 208 volt applications.

1. Diagrams are shown for motor packs and dampers installed with powered ventilator fan equipped with a single speed

motor. The damper will open when the fan is on and close when the fan is off. For connection to 2-speed motors or for

other control sequences consult the factory.

2. Diagrams shown with end switches are for applications where it is desirable to have the damper fully open before fan

start-up.

220, 277, 440, 575 or 600 volts

115 or 220 volts - with End Switch

(Requires end switch kit #851038 installed on damper)

220, 277, 440, 575 or 600 volts with End Switch

(Requires end switch kit#851038 installed on damper)

575/600 Volt Transformer

Model B050WZ13

208/220/277/480 Volt Transformer

Model AE-249

Single Phase

Three Phase

Transformers

Black

Green Actuator

Fuse (if required)

Safety Disconnect

*Fan Starter

Manual or Magnetic

115v Neutral

(white) Conductor

* For 115v starters, neutral (white)

conductor is not opened or fused.

Fan

Motor

Black

Green

Actuator

Fuse

(if required)

Safety Disconnect

*Magnetic Fan

Starter

115v Neutral

(white)

Conductor

Fan

Motor

End

Switch

Fan

On-Off

Switch

* For 115v starters, neutral (white)

conductor is not opened or fused.

Black

Green

Actuator

Fuse

(if required)

Safety Disconnect

Fan

Motor

End

Switch

Fan

On-Off

Switch

Optional transformer for

277, 575 or 600 volts

(115v motorpack required)

Fan Starter

Manual or Magnetic

Black

Green

Actuator

Fuse (if required)

Safety Disconnect

Fan Starter

Manual or Magnetic

Optional transformer for

277, 575 or 600 volts

(115v motorpack required)

Fan

Motor

115 or 220 volts

Black

Green

Connect common wire and one color

coded wire corresponding to supply

voltage of source. Insulate all unused

primary wires.

Common (white)

208v (Red)

220v (Green)

277v (Brown)

480v (Blue)

208/220/277/480 Volt Primary

115 volt secondary

110v

115v

120v

Secondary

600v

575v

550v

Primary

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