Cumberland G50CBF16GA User manual

PNEG-1425
50" Butterfly Fan
Model:
G50CBF16GA
Installation and Operation Manual
PNEG-1425
Date: 10-28-09

2PNEG-1425 50" Galvanized Butterfly Fan
Congratulations
You have just purchased one of the best ventilation fans in the industry designed to give years
of high velocity airflow while saving hundreds of dollars in electrical usage. Please take some
time to read through this manual and familiarize yourself with the proper installation methods and
operation of the fan.
FEATURES
• 23500 CFM @ 24.0 CFM/W @ 0.05" S.P.
• One year warranty on parts
• Shutterless operation - No shutters to clean
• Consistent airflow through flock growout
• Easy assembly and maintenance
• On-site service and support
Unpacking
Before beginning installation, check the condition of the fan. Remove the overwrap and packing
materials and examine all parts and components for shipping damage. Any damage incurred
must be reported immediately to the freight carrier.
Model : G50CBF16GA
Size : 50" Galvanized Housing and Cone
Voltage : 115V/230V
Amps : 13.0/6.5
Frequency : 50/60 Hz Single Phase

Table of Contents
PNEG-1425 50" Galvanized Butterfly Fan 3
Contents
Chapter 1 Safety.................................................................................................................................................. 4
Safety Guidelines .............................................................................................................................. 4
Safety Instructions ............................................................................................................................. 5
General Safety Information ................................................................................................................ 7
Chapter 2 Decals................................................................................................................................................. 9
Warning Decals and Locations .......................................................................................................... 9
Chapter 3 Installation ....................................................................................................................................... 10
Framing and Positioning .................................................................................................................. 10
Installation of the Fan on a Vertical Plane ....................................................................................... 11
Tabbed Cone Panel Assembly ........................................................................................................ 12
Butterfly Assembly ........................................................................................................................... 14
Grill Guard Assembly ....................................................................................................................... 15
Inlet Grill Assembly .......................................................................................................................... 15
Chapter 4 Wiring ............................................................................................................................................... 17
Electrical Hookup ............................................................................................................................. 17
Chapter 5 Operation ......................................................................................................................................... 18
Start-up and Operation of the Butterfly Fan ..................................................................................... 18
Chapter 6 Troubleshooting.............................................................................................................................. 19
Troubleshooting Guide .................................................................................................................... 19
Chapter 7 Parts List.......................................................................................................................................... 20
Chapter 8 Exploded Diagram........................................................................................................................... 22
Chapter 9 Warranty........................................................................................................................................... 25

4PNEG-1425 50" Galvanized Butterfly Fan
1. Safety
Safety Guidelines
This manual contains information that is important for you, the owner/operator, to know and understand.
This information relates to protecting personal safety and preventing equipment problems. It is the
responsibility of the owner/operator to inform anyone operating or working in the area of this equipment
of these safety guidelines. To help you recognize this information, we use the symbols that are defined
below. Please read the manual and pay attention to these sections. Failure to read this manual and its
safety instructions is a misuse of the equipment and may lead to serious injury or death.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.
NOTE indicates information about the equipment that you
should pay special attention.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.

1. Safety
PNEG-1425 50" Galvanized Butterfly Fan 5
Safety Instructions
Our foremost concern is your safety and the safety of others associated with this equipment. We want
to keep you as a customer. This manual is to help you understand safe operating procedures and some
problems which may be encountered by the operator and other personnel.
As owner and/or operator, it is your responsibility to know what requirements, hazards and precautions
exist, and to inform all personnel associated with the equipment or in the area. Safety precautions may
be required from the personnel. Avoid any alterations to the equipment. Such alterations may produce
a very dangerous situation where SERIOUS INJURY or DEATH may occur.
This equipment shall be installed in accordance with the current installation codes and applicable
regulations which should be carefully followed in all cases. Authorities having jurisdiction should be
consulted before installations are made.
Install and Operate Electrical Equipment Properly
Electrical controls should be installed by a qualified electrician
and must meet the standards set by the National Electrical Code
and all local and state codes.
Disconnect and lock out all power sources before installing
wires/cables or servicing equipment. Electric Shock Hazard
Keep Hands Away from Moving Parts
DO NOT put hand or arm in fan. Rotating parts can crush
and dismember.
DO NOT put any kind of tool inside fan to try and clear debris while
the fan is running. Damage to the equipment will result.
ALWAYS turn OFF and lock out all power sources before
servicing equipment. Rotating Fan Blade
Lifting Hazard
Single person lift could cause injury.
Use two or more people or a mechanical lifting device to lift/move
heavy equipment.
Use Assistance When Lifting or
Moving Heavy Equipment

1. Safety
6PNEG-1425 50" Galvanized Butterfly Fan
Prepare for Emergencies
Be prepared if fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors, ambulance service,
hospital and fire department near your telephone.
Keep Emergency Equipment
Quickly Accessible
Wear Protective Clothing
Wear close fitting clothing and safety equipment appropriate
to the job.
Remove all jewelry.
Long hair should be tied up and back.
Safety glasses should be worn at all times to protect eyes
from debris.
Wear gloves to protect your hands from sharp edges on
plastic or steel parts.
Wear steel toe boots to help protect your feet from falling
debris. Tuck in any loose or dangling shoe strings.
A respirator may be needed to prevent breathing potentially
toxic fumes and dust.
Wear hard hat to help protect your head.
Wear appropriate fall protection equipment when working at
elevations greater than six feet (6').
Eye Protection
Gloves
Steel Toe Boots
Respirator
Hard Hat
Fall Protection

1. Safety
PNEG-1425 50" Galvanized Butterfly Fan 7
General Safety Information
Users Manual
This manual contains information and instructions essential to the safe installation and use of the
50" Galvanized Butterfly Fan . This manual should be readthoroughly before attempting any installation
or use of the fan. Keepthis manual in a locationthat it can bereadily accessed. Failure to read the manual
and its safety instructions constitutes misuse of the product.
Safety in Handling the Butterfly Fan
This unit should be installed and maintained by a qualified technician familiar with the use and
function of ventilation fans. This will prevent situations leading to damaged components and/or injury.
Whenever possible, use mechanical lifting equipment when lifting or moving the fan during installation.
Where manual handling is required, seek assistance from other people.
Correct Use of the Butterfly Fan
The fan is designed solely for the purpose of ventilating agricultural buildings. Use of the fan in any other
way is a misuse of the equipment and may endanger yours or another person’s safety and health.
In the installation and use of the Butterfly Fan only genuine Cumberland parts are to be used. Use of
other non-genuine parts is a misuse and may lead to dangerous situations.
This fan is not designed for use in atmospheres where the risk of explosion is foreseen. Such
environments may include enclosed areas of high dust concentrations, gas, vapors and fumes.
Use in such an environment is prohibited. If in doubt, contact Cumberland or your dealer.
Safety Guards
The Butterfly Fan contains moving and electrical parts which will cause serious injury, even death if
touched. Guards are placed onthe fan to protect you. Operating the fan at any time with guards removed
or incorrectly fitted is a serious misuse of the fan and endangers you and others safety.
Safety in Maintenance
While the Butterfly Fan is designed to keep maintenance to a minimum, some items such as greasing the
bearings and belt replacement will be required over the life of the fan. Do not attempt any maintenance
orrepairs onthefan unless youarecompetent todoso. Remember thatthefan may,incertain situations,
operate under automatic control and will start without warning. Never attempt any work on the fan without
first isolating it from the power supply and locking out the isolator so that only you can turn the power back
ON. For your safety, follow the guidelines given in the
Maintenance Section on Page 18 of this manual.
Before re-starting the fan, ensure that all electrical enclosures are locked, closed and all guards and
other safety measures are correctly fitted. If in doubt, contact your dealer or Cumberland for assistance.

1. Safety
8PNEG-1425 50" Galvanized Butterfly Fan
Electrical Safety
Provisions for an adequate and safe power supply to the fan unit are essential to your safety.
Cumberland recommends that a competent and qualified electrician undertake all electrical wiring. All
wiring is to be installed in accordance with National, State, and Local electrical codes. Fans used
to ventilate livestock buildings and other rooms where continuous air movement is essential should be
connected to individual electrical circuits with a minimum of two circuits per room.
We strongly recommend the installation of supplementary natural ventilation as well as a back-up
thermostat. There should also be an alarm system on at least one cooling stage. For connection
requirements, refer to the diagram on the motor nameplate and also to information enclosed with
the fan control used.
For single phase fans, motor overload protection should be provided for each fan. A circuit breaker or
slow blow motor type fuse must be used. A safety cut-off switch should be located adjacent to each fan.
Contact your local distributor for the correct cut-off switch.
The motor must be securely and adequately grounded. This can be accomplished by wiring with a
groundedconduitora separate ground wire attached to the motor’sgroundlug.Donotattemptoperation
unless the motor is sufficiently grounded.
Do not kink power cable and never allow cable to come in contact with oil, grease, hot surfaces,
or chemicals.
Remember, electrical safety is your responsibility.

PNEG-1425 50" Galvanized Butterfly Fan 9
2. Decals
Warning Decals and Locations
SHEAR POINT
Keep hands clear of moving
parts. Do not operate with
guard removed. Disconnect
and lockout power before
servicing.
DC-995
WARNING
Lockout power
before servicing.
HIGH VOLTAGE.
Will cause serious
injury or death.
STAY CLEAR OF
ROTATING BLADE
May cause serious injury.
Blade may start
automatically.
Disconnect and
lockout power sources
before servicing.
FLYING OBJECTS
HAZARD.
Danger of eye injury.
Wear eye protection.
DC-1540
WARNING
WARNING
DC-995 - 2.0" x 4.5"
WARNING Shear Point
Located in lower right corner on both front and
back sides of the fan housing.
DC-1540 - 5.0" x 7.5"
DANGER High Voltage
WARNING Stay Clear of Rotating Blade
WARNING Flying Objects Hazard
Located in lower right corner on both front and back
sides of the fan housing.

10 PNEG-1425 50" Galvanized Butterfly Fan
3. Installation
Framing and Positioning
1. Construct the opening frame to the correct size (55-1/4" H x 55-1/4" W) as shown below in
Figure 3A. Remember, framing must be able to support the weight of the fan assembly. Ensure
the load bearing portion of the bottom sill is rigid and properly supported.
IMPORTANT: When installing more than one fan, maintain a minimum of 10" between rough
openings to ensure clearance of cones outside of buildings. The cone largest
diameter is 59" and allowances must be made to keep the cones separated. If not
sure of sufficient clearance, contact your local distributor for more information.
(See Figure 3B.)
Figure 3A
Figure 3B

3. Installation
PNEG-1425 50" Galvanized Butterfly Fan 11
Installation of the Fan on a Vertical Plane
1. Position the fan in front of the opening from the inside of the building. Using a minimum of two (2)
people, lift fan housing into the opening.
2. Because of the design and operation of the butterfly flaps it is necessary to mount the fan
vertical regardless of the angle of the wall to which it is mounted. In order to accomplish this it is
recommended that a level be positioned vertical on the housing and shims (furring strips can be
used) be placed behind either the top or bottom mounting flanges until the fan is fully vertical.
(See Figure 3C.) Once you confirm the fan is setting vertical in the opening, fasten flanges to the
rough opening framework with the wood mounting screws provided. Failure to complete this step
can result in insufficient closure of thebutterfly flaps.The fan housing should now be flush and level
inside of the framing.
Figure 3C
Lifting Hazard. Single person lift could cause injury. Use two (2) or more people
or a mechanical lifting device to lift/move heavy equipment.
NOTE: Fan must be vertical.

3. Installation
12 PNEG-1425 50" Galvanized Butterfly Fan
Tabbed Cone Panel Assembly
Figure 3D
Assembly Steps
1. Lay cone panels on the ground as shown in Figure 3D.
2. Slip four (4) cone panels together using tab and slot connections on edges of each panel.
(Please note that all tabs must be on the inside of the cone assembly.)
3. Placeboltsthroughholesandthreadnutsintoplacetoholdfour(4)conepanelstogether.(Nutsmust
be located on the outside of the cone assembly.) (Do not tighten nuts.)
(See Figure 3E on Page 13.)
4. Once four (4) cone panels are assembled stand assembly up on large radius side. (See Figure 3D.)
5. Pull both ends together create a heart shape as shown in Figure 3E on Page 13 to slide tabs
into slots.
6. Place remaining bolts through holes and thread remaining nuts into place to hold cone together.
(Nuts must be located on the outside of the cone assembly.) (Do not tighten nuts.)
7. Install assembled cone onto fan venturi unit using cone strut angles provided. (See Figure 3F
on Page 13.) (Make sure bottom panel with drain hole is closest to the ground.)

3. Installation
PNEG-1425 50" Galvanized Butterfly Fan 13
Figure 3E
Figure 3F
Nuts on outside of
cone assembly
Cone strut angles

3. Installation
14 PNEG-1425 50" Galvanized Butterfly Fan
Butterfly Assembly
1. Install the spring clip 16-0108 onto the butterfly framebar using one (1) 1/4" x 20" x 1"bolt (S-6998)
and one (1) 1/4" x 20" whiz nut (S-7215) as shown in Figure 3G.
2. Thecenterbarofthe butterfly frame weldment shouldbepositionedvertically,withthebottomlining
up with the slots farthest out on the cone and the top lined up with the slots farthest in on the cone.
This will give the butterfly frame weldment a slight tilt back (~ 1"). This aids the closing of the
butterfly flaps.
3. Use 1/4" x 1-1/4" bolts and nuts to fasten the butterfly frame weldment to the panels. Tighten the
1/4" nuts. Attach the springs from the doors to the spring clip and push the flaps open and they
should close automatically from the spring tension, completely sealed by the magnets on the
butterfly frame weldment assembly. See Figure 3H for assembly inside of cone.
Figure 3G Spring Clip
Figure 3H Inside Cone

3. Installation
PNEG-1425 50" Galvanized Butterfly Fan 15
Grill Guard Assembly
Position grill guard lining up attachment hoops with the holes in the cone panels at 3, 6, 9, 12 o’clock
positions. Attach and tighten using the 5/16" x 1" bolts and 5/16" whiz nuts. (See Figure 3I.)
Figure 3I
Inlet Grill Assembly
1.RemovethefoldedInlet grill fromthepackaging.Unfoldallfour(4)sides lining them upperpendicular
to each other. Using the black wire ties, link the sides together using two (2) ties per corner.
(See Figure 3J.) After pulling them tight, clip off excess wire tie. (See Figure 3K.) Attach
hanging hooks in corners as shown in
Figure 3L and Figure 3M on Page 16 (upper left and lower
right shown).
Figure 3J Unclipped Wire Tie Figure 3K Clipped Wire Tie
Wire tie excess
Wire tie
Wire tie

3. Installation
16 PNEG-1425 50" Galvanized Butterfly Fan
Figure 3L Inlet Grill Hanging Hook - Top
Figure 3M Inlet Grill Hanging Hook - Bottom

PNEG-1425 50" Galvanized Butterfly Fan 17
4. Wiring
Electrical Hookup
As previously mentioned, All wiring should be installed in accordance with National, State and Local
electrical codes. A certified electrician should complete this portion of the installation to ensure safety
and that the wiring is correct for the application.
1. First, remove the back cover of the motor exposing the wiring block. (See Figure 4A.)
Figure 4A
2. Themotoris designed to use eitherasolidclampingconduitonthesideof the motor or the supplied
wire with a three-prong plug attached. In either case, it is important to attach the ground wire to the
ground lug as depicted in Figure 4A. For correct motor rotation (CCW), the Red wire should be
located on the L2 connection as depicted. If this is not the case, switch the Red and Black wires.
Refer to wiring diagram on the side of the motor for correct wiring for 115V and 230V supply.
3. Fans used to ventilate livestock buildings or other rooms where continuous air movement is
essential should be connected to individual electrical circuits with a minimum of two (2) circuits per
room. For connection requirements, refer to diagram on the motor nameplate. For single phase
fans motor overload protection should be provided for each fan. A safety cut-off switch should be
located next to each fan. A circuit breaker switch or slow blow motor type fuses must be used.
(See Figure 4B.) 3 Phase fans require three (3) pole contactors with overload protection.
Figure 4B
Ground lug
Hole for conduit
Gusset for wire
(remove rubber plug)

18 PNEG-1425 50" Galvanized Butterfly Fan
5. Operation
Start-up and Operation of the Butterfly Fan
1. With the fan de-energized, rotate the prop by turning the fan pulley, look for clearance between the
prop tip and the housing. Replace all guards and check all fasteners to ensure they are tight.
When satisfied, energize the fan and make note of direction of rotation. The prop should turn
counterclockwise when viewed from inside the house and the butterfly flaps should open
completely. They are designed to stay open during fan operation and close when the fan is
de-energized. If the prop is turning backwards, the flaps will not open. If this is the case, refer to
Figure 3J on Page 15 and switch the black and red wires as noted after de-energizing the fan.
Re-check the operation and when satisfied the fan is operating properly, follow the
instructions below.
2. Write down the date that the Butterfly Fan went into service and follow the maintenance schedule
as listed below:
a.
Check the belt, pulleys and the bearings after every two (2) months of service. The belt tensioner
should be positioned between the 2
nd
and 3
rd
notch as indicated by the mark on the body of the
tensioner. Under tensioning will result in belt slippage, over tensioning will lead to premature belt
and bearing failure.
b. The motor and shaft bearings are lubricated at the factory. The motor bearings should never
requirelubricationoverthelifeofthe fan butthefanshaftbearingsshouldbegreasedafterevery
2-3 months of use, using the zerks on top of thepillow blocks. Only use a small amount of lithium
soap base grease after cleaning the zerks. Contact your fan distributor for the proper grease.
3.Whencleaningthe fans, Do Not Spray bearings,tensionerormotordirectlywitha pressure washer
asthisWill leadto premature failure of thesecomponents.Aftercleaningthefan,simplywipe these
parts with a clean rag to remove dirt and debris. Failure to follow these instructions will void the
warranty on these components.
Disconnect and lock out all power sources before servicing equipment.

PNEG-1425 50" Galvanized Butterfly Fan 19
6. Troubleshooting
Troubleshooting Guide
Fan would not Start
1. Check the power supplied to the fan at the point closest to the fan.
2. Check the wiring to the fan.
3. Override the controller (set to manual) and re-check.
4. Contact your Cumberland distributor.
Fan Turns Slow
1. Check the voltage supplied (must be within ± 10% if the nominal voltage).
2. De-energize the power and check the wiring at the rear of the motor.
3. De-energize the power, remove the belt and rotate both the motor and fan pulleys. Do they turn
freely? If not, contact your Cumberland distributor.
Fan is Noisy or Vibrates
1. De-energize the fan. Check for loose parts, i.e., bolts, screws, motor, pulleys, prop. Are the fan
blades even? Turn the prop inside of the venturi and look at the blade tips as they move past the
same location. Do they all three appear even? (NOTE: They can be a little different without
any problems.)
If they are significantly different contact your Cumberland distributor for more information.
2. Is the noise coming from the bearings? Lubricate per instructions and energize the fan. Did the
noise subside? If not, the bearings are probably damaged and in need of replacement.
Butterfly Flaps do not Close Completely
1. Check vertical alignment of the butterfly frame using a level. If not level, shim the housing out as
described on Page 7.
2. Check the springs, are they attached? If not, re-attach. Are they stretched and no longer under
tension? Contact your Cumberland distributor for replacements.
3. Check the butterfly flap bushings, are they full of contamination? Rinse with water and remove all
buildup of dirt and contamination. Move the flap by hand until loose and moving freely.
4. Look to see if the flap is bent. With the fan OFF completely close both flaps and look along mating
surface of the butterfly frame. Are all points contacting? If not, bend the flap slightly until all
surfaces contact.

20 PNEG-1425 50" Galvanized Butterfly Fan
7. Parts List
No. Part # Description Qty U/M
110-0200 Galvanized Cone Mounting Hardware 1EA
2 12-0312 50" Galvanized Butterfly Cone Bracket 4
3S-3611 Nut Flanged Whiz 5/16"-18 ZN YDP 32
4 S-6606 Bolt Flanges 5/16"-18 x 3/4" ZN Grade 5 32
510-0103 Cord/Terminal Bag - Galvanized Fans 1EA
6 10-0102 Terminal Bag - Galvanized Fans 1
7S-7145 Cord, 96"-16/3 SJT w/ Male 1
810-0106 50" Galvanized Butterfly Fan Install Kit 1 EA
9CW-2002 Hook 3/16" x 1-1/2" Lagged Thread 4
10 S-6997 Bolt HHCS 1/4"-20 x 1-1/4" ZN Grade 5 4
11 S-7215 Nut Flanged Whiz 1/4"-20 Zinc 5
12 S-9248 Screw WS 1/4"-10 x 1-1/2" FHP ZN 16
13 16-0108 Spring Clip - 54" Butterfly Fan 1
14 S-6998 Bolt HHCS 1/4"-20 x 1" ZN Grade 5 1
15 12-0400 50" Galvanized Butterfly Sub-Assembly 1EA
16 12-0401-GY Butterfly Frame Weldment 53" Grey 1
17 12-0317 Block, Mounting - Nylon 2
18 12-0319 Washer, Nylon 4
19 12-0406 Butterfly Flap 50" Galvanized Fan 2
20 S-1101 Bolt HHCS 1/4"-20 x 1/2" ZN 2
21 S-853 Bolt HHCS 1/4"-20 x 1-1/2" ZN 4
22 12-0405 Galvanized Flap Shaft 50" Butterfly 2
23 16-0092 Disk Magnet 1/2" Diameter 1/8" Thick 4
24 16-0109 Tape Foam Seal 1/2" x 14' (4714) 14'
25 16-0100 Spring, SS 8.70" Long - Butterfly Flap 2
26 S-9440 Rivet, POE 1/8" Diameter 4
27 S-1429 Bolt HHCS 1/4"-20 x 3/4" ZN Grade 2 2
28 S-3229 Bolt HHCS 1/4"-20 x 1-3/4" ZN Grade 2 2
29 S-7025 Nut Nylock 1/4"-20 ZN Hex Grade 5 4
30 S-7215 Nut Flanged Whiz 1/4"-20 Zinc 4
31 11-0163 Conefan Bearing Plate Strut 1
32 11-0331 Bearing Plate, Galvanized Fan, Tensioner 1
33 11-0333 Front Inlet Grill 50" Short Fan 1
34 11-0334 Side Inlet Grill 50" Short Fan 4