Greenheck MP-310 User manual

®
1. MP-310 motor packs
are designed for use
on model WD-300
series backdraft
dampers only.
2. For single panel
damper, insert tab of
Actuator Bracket into
the slot on the side of
the frame. For dampers
with center bars, the
tab of the Actuator Bracket should be inserted into the slot
on the bottom of the center bearing rail. Position bracket
over the two holes on the bottom of the frame and secure
with the #10 hardware provided.
3. Position the Connecting Link(s) on the second blade pivot
from the bottom of the damper. Slip the Connecting Link
over the bushing and with a needle nose pliers bend the tab
over to the position shown in detail "A". This will hold the
Connecting Link in place on the pivot.
4. To adjust the Actuator Linkage Assembly, pull back on the
Actuator Arm Assembly until a slight amount of tension has
been applied to the Actuator Spring. Tighten the fasteners
between the Connecting Link and the Actuator Arm
Assembly. Fasteners should be placed as far apart as
possible. This provides greater stability to the linkage.
NOTE: It is important to avoid too much spring tension; use
just enough tension to help close the damper. Too
much tension could impair opening of the damper.
5. Actuators are supplied with junction boxes and covers.
When wiring, make sure the voltage is correct. On dual
voltage motor packs, be sure to connect the proper motor
leads for the correct voltage and insulate any unused wire.
The voltage of each specific model is stamped into the
actuator housing or on a label that is affixed to the actuator
(see page 2 for typical wiring diagrams).
1
3
2
5
41
3
2
5
1
Field Installation Instructions for
Multi Products
MP-310 Motor Pack
UL Listed Electric Actuators With Spring Return
For Use With WD-300 Series Dampers
Motor Pack Contents
1. Actuator
2. Actuator Bracket
3. Actuator Arm Assembly
4. Connecting Links
5. Actuator Spring
All hardware included
Single Panel Multiple Panel
6. If the damper fails to open properly, check for one of
the following causes:
A. Motor pack fails to open the damper completely.
• Check for an ‘out of square’ or racked damper.
• Spring tension too great.
• Excessive voltage drop.
B. Motor pack fails to function.
• Check for correct voltage.
• Check for proper wiring.
Motor Pack Quantity
One or two motor packs may be required depending on
damper size. Single panel dampers have one column of
blades and one actuator is installed as shown in the
Single panel view above. Double panel dampers have
two columns of blades and on actuator is installed as
shown in the Multiple panel view above. Triple panel
dampers have three columns of blades and two
actuators are installed as shown in the Multiple panel
view above.
Actuator Specifications
MP-310 motor packs use single phase 60hz (50hz
optional) shaded pole stall type impedance protected
electric actuators and are supplied in various
voltages(see chart below). For 277, 575 or 600 volt
operation a transformer and 115 volt motor pack is
required.
Part No. 463547
Motor packs 24V (60 Hz) 440V (60 Hz) 120V (50/60 Hz) 208V (50/60 Hz) 220V (50/60 Hz) 24V (50 Hz) 380V (50 Hz)
Stall Amps .740 .047 .110 .050 .062 .100 .098
Spec ID# 3753 3752 3751 3751 3751 2651-A 2663-C
DAMPERS AND LOUVERS

Wiring diagrams are shown for motor packs and dampers installed with power ventilator fan equipment with single speed
motor. The damper will open when the fan is on and close when the fan is off. For connection to 2-speed fan motors or for
other control sequences consult the factory. The wiring diagrams shown with end switches are for applications where it is
desirable to have the damper fully open before fan start-up.
TYPICAL WIRING DIAGRAMS MP-310
IOM-MP-310
Rev. 1 July 2003
Copyright © 2003 Greenheck Fan Corp.
208/220/230/240 Volt
Actuator
110/115/120 Volt
Dual Voltage Actuators
Actuator
Black
White
Green
Brown
Red
Brown
White
Green
Black
Red
Single Voltage Actuator
Black
Black
Green
Actuator
L1 O
1
conductor is not opened or fused.
* For 115v Starters, neutral (white)
115v Neutral
(white) Conductor
L2
Fuse (if required)
Motor
See Chart
Actuator
Green 1
Fan
Manual or Magnetic
* Fan Starter Safety Disconnect
115v Neutral
(white) Conductor
L2
L1
End
Switch
See Chart
* For 115v Starters, neutral (white)
conductor is not opened or fused.
Switch
On-Off
Fan
(if required)
Fuse
Green 1
Actuator
C
NO
NC
M
* Magnetic Fan Safety Disconnect
Starter
Fan
Motor
1O
Single Phase
(115v motorpack required)
277,575 or 600 volts
Optional transformer for
* Fan Starter
Manual or Magnetic
L3
L2
L1
(white) Conductor
115v Neutral Fuse (if required)
Green 1
Motor
Actuator
See Chart
Fan
3O
Safety Disconnect
277,575 or 600 volts
(115v motorpack required)
Optional transformer for
(white) Conductor
115v Neutral
L2
L1
End
Switch
See Chart
Motor
M
Switch
On-Off
Fan
(if required)
Fuse
1
Green
Actuator
NO
C
NC
* Magnetic Fan Safety Disconnect
Starter
Fan
3O
Three Phase
Chart 1
Primary
550v
575v
600v
Secondary
120v
115v
110v
H
2
X
1
X
2
H
1
Common (white)
coded wire coresponding to supply
Insulate all unused
Connect common wire and one color
Green
See Chart
Actuator
1
voltage of source.
primary wires.
480v (Blue)
208v (Red)
220v (Green
277v (Brown
Transformers
575/600 Volt Transformer Model B050WZ13 208/220/277/460 Volt Transformer
GREENHECK
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
www.greenheck.com