GSI Group PNEG-010 User manual

PNEG-010
Vane Axial Fan
Installation and Operation
Model #:
Owner’s Manual
PNEG-010
Date: 02-11-09

2PNEG-010 Vane Axial Fan
Fan Check List
1. All wire connections
2. Tip clearance on blade
3. Fan blade torqued to torque specs
4. Grill guard in place and tight
5. Fuse in place, extra fuse provided
6. Motor rotation correct
7. Contactor engages properly
8. Running amperage
9. Vibration
10. All fasteners tight
11. Indicator light
12. All decals and serial number tag
13. Aesthetic appearance
14. Manual
Tester Signature: __________________________
Date: ____________________________________
Record in the space provided below the Model # and Serial # of this product. These numbers are found
on the Model and Serial Tags located on the outside of the unit.
Model #: ___________________________________________
Serial #: ___________________________________________
Keep these numbers for future reference.

Table of Contents
PNEG-010 Vane Axial Fan 3
Contents
Chapter 1 Safety .................................................................................................................................................. 4
Safety Guidelines ............................................................................................................................... 4
Safety Instructions .............................................................................................................................. 5
Chapter 2 Decals ................................................................................................................................................. 7
Roof Damage Warning and Disclaimer .............................................................................................. 7
Safety Alert Decals ............................................................................................................................. 8
Chapter 3 Installation Instructions .................................................................................................................. 10
Vane Axial Fan Pad .......................................................................................................................... 10
Chapter 4 Fan Installation ................................................................................................................................ 11
Pre-installation Requirements .......................................................................................................... 11
Machine to Earth Ground ................................................................................................................. 14
Previously Installed Units ................................................................................................................. 14
Proper Installation of the Ground Rod .............................................................................................. 14
Chapter 5 Fan Specifications ........................................................................................................................... 15
Chapter 6 Fan Operation .................................................................................................................................. 18
Fan Start-up ..................................................................................................................................... 18
Fan Shut Down ................................................................................................................................. 18
Maintaining Grain Quality ................................................................................................................. 18
Grain Storage ................................................................................................................................... 19
Fan Blade Removal and Installation ................................................................................................. 20
Removal ........................................................................................................................................... 21
Installation ........................................................................................................................................ 21
Chapter 7 Fan Service ...................................................................................................................................... 22
Fan Blade Inspection and Maintenance ........................................................................................... 22
Fan Motor ......................................................................................................................................... 22
Chapter 8 Troubleshooting .............................................................................................................................. 25
Fan Troubleshooting Flow Chart ...................................................................................................... 26
Chapter 9 Parts List .......................................................................................................................................... 27
12''-14'' Fan Parts ............................................................................................................................. 27
18''-28'' Fan Parts ............................................................................................................................. 28
Chapter 10 Wiring Diagrams ............................................................................................................................ 29
1 Phase Schematic ......................................................................................................................... 30
3 HP 1 Phase Wiring Diagram and Parts ....................................................................................... 31
3, 7, 10 and 15 HP 1 Phase Wiring Diagrams and Parts ................................................................ 32
3 Phase 230 Volt Schematic ........................................................................................................... 35
3, 7, 10 and 15 HP 3 Phase 230 Volt Wiring Diagrams and Parts ................................................. 36
3 Phase 460 Volt Schematic ........................................................................................................... 39
3, 7, 10 and 15 HP 3 Phase 460 Volt Wiring Diagrams and Parts ................................................. 40
3 Phase 575 Volt Schematic ........................................................................................................... 43
3, 7, 10 and 15 HP 3 Phase 575 Volt Wiring Diagrams and Parts ................................................. 44
Chapter 11 Warranty ......................................................................................................................................... 47

4PNEG-010 Vane Axial 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-010 Vane Axial 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.
Follow Safety Instructions
Carefully read all safety messages in this manual and
safety signs on your machine. Keep signs in good
condition. Replace missing or damaged safety signs. Be
sure new equipment components and repair parts include
the current safety signs. Replacement safety signs are
available from the manufacturer.
Learn how to operate the machine and how to use controls
properly. Do not let anyone operate without instruction.
Keep your machinery in proper working condition.
Unauthorized modifications to the machine may impair
the function and/or safety and affect machine life.
If you do not understand any part of this manual or need
assistance, contact your dealer.
Read and Understand Manual
Install and Operate Gas-Fired Equipment Properly
Fuel supply should be installed by a qualified gas
technician and must meet local and state codes for
gaseous fuel supplies.
Disconnect and lock out all fuel sources before
servicing equipment. Explosive Gases

1. Safety
6PNEG-010 Vane Axial Fan
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
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

PNEG-010 Vane Axial Fan 7
2. Decals
Roof Damage Warning and Disclaimer
The manufacturer does not warrant any roof damage caused by excessive vacuum or internal
pressure from fans or other air moving systems. Adequate ventilation and/or “makeup air”
devices should be provided for all powered air handling systems. The manufacturer does not
recommend the use of downward flow systems (suction). Severe roof damage can result from
any blockage of air passages. Running fans during high humidity/cold weather conditions can
cause air exhaust or intake ports to freeze.
CAUTION!
Excessive vacuum (or pressure) may
damage roof. Use positive aeration
system. Make sure all roof vents are
open and unobstructed. Start roof
fans when supply fans are started.
Do not operate when conditions exist
that may cause roof vent icing.
DC-969

2. Decals
8PNEG-010 Vane Axial Fan
Safety Alert Decals
Stay clear of rotating
blade. Blade could start
automatically. Can cause
serious injury. Disconnect
power before servicing.
DC-1225
WARNING

2. Decals
PNEG-010 Vane Axial Fan 9

10 PNEG-010 Vane Axial Fan
3. Installation Instructions
Vane Axial Fan Pad
Placement of the Fan Pad: Transitions/Fans/Heaters Only
If a fan or fan and heater is to be installed, refer to Figure 3A to determine the concrete pad size.
1. The top of this pad should be level with the top of the bin’s foundation.
2. Recommended pad thickness is 4" minimum.
3. Front of pad should be perpendicular to bin wall.
4. Pad for heater not required, but if it is to added, pour the pad to cover both locations.
For fans and transitions used in aeration duct system applications, refer the transition and aeration
installation instructions.
IMPORTANT: Fan pad and fan must be level and smooth for proper operation. Vibration problems can
result from improper fan leveling.
Figure 3A
TR-4734
A = 20" for fans without heaters
A = 44'' for fans with heaters
TR-6918 and TR-6919
A = 32" for fans without heaters
A = 56" for fans with heaters
TR-7048
A = 45" for fans without heaters
A = 69" for fans with heaters

PNEG-010 Vane Axial Fan 11
4. Fan Installation
Pre-installation Requirements
Foundation
Use the dimension Figure 5A on Page 15 in the specifications section of this manual to determine the
physical size of the fan to be installed. Use the dimensions shown to determine the position of the fan
installation with respect to other equipment.
For proper operation of the fan, the unit is to be mounted on a level pad. The fan should not be
anchored to the pad, but it should be allowed to “float” on the pad. Refer to Figure 5A on Page 15 for fan
pad location in the specifications section of this manual for recommendations of pad placement with
respect to various catalog transition ducts.
Transition
The transition duct should be all metal construction, with a gradual angle to the rectangular opening in
the bin wall. The duct should allow for a smooth transition with minimal resistance of the airflow from the
fan discharge to the bin plenum. Keep the entrance of the plenum as clear as possible from obstructions
by floor support.
Roof Exhaust
Adequate exhaust air openings in the roof are required to prevent any additional back pressure from
building in the bin. See roof damage warning and disclaimer on Page 7.
Power Supply
Adequate power must be supplied to the fan for reliable operation. Consult the local power company and
have a representative survey the installation. Only the power company can ensure that their system is
sized properly to provide adequate service to the installation and new equipment.
Wire Size
Undersized wire can lead to voltage drop which causes motor overheating and shortened motor life.
Use the electrical specifications chart on Page 16 in this manual to size the supply wire according to the
horsepower of the fan and the distance to the power supply. Refer to fan specifications section
on Page 15 of this manual to find the full load current of the motor for a given fan size. The full load
current can also be found on the motor nameplate.
Service Disconnect
Each fan motor must be supplied with an independent power circuit, equipped with a fused disconnect
switch. Locate this switch near the unit, as the power should be shut off before servicing the fan.
It is the customer’s responsibility to provide a fused disconnect and motor overload protection. These
must be properly sized and connected to allow proper motor operation. Failure to provide these
components could cause severe motor damage and void the manufacturer’s warranty.

4. Fan Installation
12 PNEG-010 Vane Axial Fan
Fan Installation
1. Remove packaging materials and inspect fan for any shipping damages. Report these at once to
the shipper.
2. Check all fasteners on the fan to make sure they are tight (fasteners may loosen during shipment).
Tighten any loose fasteners, check for proper clearance and retighten.
3. Check all electrical connections that may have loosened during shipment.
4. Rotate the fan blade. Blade should rotate freely and should not make contact with the housing
sides or venturi.
5. Place fan in proper location on the fan pad. Attach fan to transition duct and seal connection
with caulk.
6. Check all joints and seams around the lower part of the bin. Verify that these are well sealed to
prevent air leakage fromthe bin plenum. Inspect the transition duct as well. Seal any leaks thatmay
be present to prevent air losses that reduce fan efficiency.
7. Level fan. Fan pad should be poured flat and level, however, it may be necessary to shim the legs
provided on the fan housing to level the fan. Fans not resting on support legs may have excess
vibration which can lead to premature wear and tear on fan components.
IMPORTANT: Electrical installation must be performed by a qualified electrician, in accordance with
National and Local Electrical Codes. Any violation of electrical wiring codes could
jeopardize the warranty.
Electrical Installation
1. Verify that the incoming power supply has been deemed adequate by the local power company.
2. Verify that the wiring supplying power to the fan is sized correctly for thedistance away from supply
and fan horsepower. (See tables in specification section on Page 16 of this manual.)
3. Verify that the safety disconnect is installed and sized correctly for the fan size. (See tables in
specification section on Page 16 of this manual.)
4. Install a machine to earth ground for each individual fan. Refer to the ground rod installation
on Page 14 in this manual.
5. The following wires must be supplied to each fan. Units without control transformers require a
separate neutral and earth ground connection.
6. The starter controls require 115 VAC power to operate. On 230 volt 3 phase units, this power is
supplied by L1 to neutral.
1 PH 230V L1, L2, N, G
3 PH 230V L1, L2, L3, N, G
3 PH 230V with optional transformer kit L1, L2, L3, G
3 PH 460V/575V L1, L2, L3, G
Always disconnect and lock out power before working on or around fan.

4. Fan Installation
PNEG-010 Vane Axial Fan 13
Check this voltage before starting unit. If voltage is not within 105 VAC-125 VAC, check for proper
voltage on L2 or L3 and move to appropriate leg. If voltage is not acceptable, install a 1/4 KVA
step-down transformer. (NOTE: Grounded B and some open delta power supplies will require this
transformer kit.)
Final Check
Check to make sure all safety guards are in place and not damaged. Replace damaged parts. Check to
make sure all decals are visible and not damaged. Replace damaged decals. Check to make sure all
control boxes are closed and no wiring is exposed.
Test Run
When the fan is completely installed, the unit will need to be checked for proper rotation. Provide
power to the fan controls and start the fan momentarily. Make sure that the fan blade rotation is in the
direction that the decal on the fan housing illustrates. If the blade is rotating the wrong direction, have
the electrician correct the wiring.
Figure 4A
The voltage between L1 and N must be 115 VAC. Any other voltage will cause
damage to equipment.
Use a #6 or approved size bare copper ground wire. Install a 5/8" diameter 8' long
copper-clad ground rod, 2' away from the foundation and 1' below the surface of the
ground or in accordance with local requirements.

4. Fan Installation
14 PNEG-010 Vane Axial Fan
Machine to Earth Ground
It is very important that a machine to earth ground rod be installed at the fan. This is true even if there is
a ground at the pole 15' away. This ground needs to be as close to the fan as possible, but no more than
8' away. The ground rod should be connected to the fan control panel with at least a #6 solid bare copper
ground wire, or in accordance with local requirements. The machine to earth ground provides additional
safety if there is a short. It also provides the grounding necessary for long life and operation of the solid
state circuit boards used on control circuits and the electronic ignition systems.
Previously Installed Units
It is recommended that previously installed units be checked to see that a machine to earth ground has
been installed by an electrician.
Proper Installation of the Ground Rod
Ground rods and wires are not supplied. It is recommended that the rod not be driven into dry ground.
The following steps ensure proper ground rod installation:
1. Dig a hole large enough to hold 1 to 2 gallons of water.
2. Fill hole with water.
3. Insert rod through water and jab it into the ground.
4. Continue jabbing the rod upand down, the water will work its way down the hole, makingit possible
to work the rod completely into the ground. This method of installing the rod gives a good
conductive bond with the surrounding soil.
5. Connect the bare copper ground wire to the rod with the proper ground rod clamp.
6. Connect the bare ground wire to the fan control boxes with a grounding lug.
7. Ground wire must not have any breaks or splices. Insulated wire is not recommendedfor grounding.
Figure 4B
Dig a hole large enough to hold 1 or 2 gallons of
water. Work the ground rod into the earth until it is
completely in the ground.

PNEG-010 Vane Axial Fan 15
5. Fan Specifications
NOTE: All dimensions in inches.
Figure 5A Fan Dimensions
Fan 12'' Dia.
1 HP 12'' Dia. 0.75 HP 14'' Dia. 18'' Dia.
1.5 HP/3 HP 24'' Dia. 26'' Dia. 28'' Dia.
A (Bolt circle) 13-1/2" 13" 15-1/4" 19-1/4" 25-3/4" 27-3/4" 30"
B (Inside diameter) 12-1/4" 11-7/8" 14-1/4" 18-1/4" 24-1/4" 26-5/16" 28-1/4"
C (CL to bottom of leg) 7-9/16" 7-9/16" 10-7/8" 11-7/8" 15-7/16" 16-7/8" 18-1/8"
D (Length) 16-1/8" 16-1/8" 16-3/16" 17/20" 24" 24" 24"
E - - - - 26-3/4" -26-3/4"

5. Fan Specifications
16 PNEG-010 Vane Axial Fan
Fan Electrical Specifications
Fan Horsepower 3/4 1
RPM 3450 3450
Phase 1 3 1 3
Volts 230 230 460 575 230 230 460 575
Full Load Amps 5.5 2.6 1.3 1 5.5 3 1.5 1.2
Minimum Wire Size Copper Wire Copper Wire
50'Run 1414141414141414
100' Run 14 14 14 14 14 14 14 14
200'Run 1214141412141414
300' Run 10 14 14 14 10 14 14 14
Minimum Wire Size Aluminum Wire Aluminum Wire
50' Run 14 14 14 14 14 14 14 14
100'Run 1414141414141414
200' Run 10 14 14 14 10 14 14 14
300' Run 8 12 14 14 8 12 14 14
Fuse Size (slow blow) 15 10 5 5 15 10 5 5
Breaker Size 20 15 10 10 20 15 10 10
Fan Horsepower 1-1/2 3
RPM 3450 3450
Phase 1 3 1 3
Volts 230 230 460 575 230 230 460 575
Full Load Amps 7.5 4.6 2.3 1.8 15 7.4 3.7 3
Minimum Wire Size Copper Wire Copper Wire
50'Run 1414141412121414
100' Run 12 14 14 14 10 12 12 12
200' Run 8 12 14 14 8 10 12 12
300' Run 610 12 12 6 8 10 10
Minimum Wire Size Aluminum Wire Aluminum Wire
50' Run 12 12 14 14 12 12 12 12
100'Run 10121214 8 101212
200' Run 610 12 12 610 10 10
300' Run 4 10 12 12 4 8 10 10
Fuse Size (slow blow) 15 10 5 5 30 15 10 10
Breaker Size 20 15 10 10 40 20 15 15

5. Fan Specifications
PNEG-010 Vane Axial Fan 17
Fan Horsepower 5 7
RPM 3450 3450
Phase 131 3
Volts 230 230 460 575 230 230 460 575
Full Load Amps 30 18 9 6.9 30 18 9 6.9
Minimum Wire Size Copper Wire Copper Wire
50'Run 101012121010 12 12
100' Run 810 12 12 810 12 12
200' Run 4 8 10 12 4 8 10 12
300' Run 4 6 8 10 4 6 8 10
Minimum Wire Size Aluminum Wire Aluminum Wire
50' Run 8 8 12 12 8 8 12 12
100' Run 6 8 10 12 6 8 10 12
200' Run 3 6 10 10 3 6 10 10
300' Run 2 4 8 10 2 4 8 10
Fuse Size (slow blow) 40 25 15 15 40 25 15 15
Breaker Size 60 30 15 15 60 30 15 15
Fan Horsepower 10 15
RPM 3450 3450
Phase 1 3 1 3
Volts 230 230 460 575 230 230 460 575
Full Load Amps 47 25 13 9.6 57 32 16 14
Minimum Wire Size Copper Wire Copper Wire
50'Run 8 812126 6 10 10
100' Run 6 6 10 12 4 4 10 10
200'Run 4 410102 2 10 10
300' Run 2 2 8 8 0 0 8 10
Minimum Wire Size Aluminum Wire Aluminum Wire
50' Run 6 6 12 12 4 4 8 8
100' Run 4 4 10 10 2 2 8 8
200' Run 22810 0 0 6 8
300'Run 006800 4 6
Fuse Size (slow blow) 60 30 20 15 75 40 20 20
Breaker Size 80 40 20 20 100 60 30 20

18 PNEG-010 Vane Axial Fan
6. Fan Operation
After initial installation and also prior to using the unit each season, check the operation to ensure proper
functioning, adjustment, and reliability.
Fan Start-up
1.Makecertain the unitisproperlyinstalledandconnected,as describedwithintheinstallationsection
of this manual. All air passage joints and seams must be well sealed.
2. With main power supply turned OFF, rotatethe blade by hand to make certain it turns freely without
contacting the housing or venturi.
3. Open roof doors to allow airflow at all times when fan is operating.
IMPORTANT: Refer to roof damage disclaimer in the safety section on Page 7 of this manual.
4. Turn ON main power disconnect switch.
5. Press the fan START button and check the following:
a. Check direction of blade rotation. Correct if needed by following the instructions on the motor.
b. Check to make sure the blade comes to full operating speed in less than 10 seconds. If there
is any doubt as to proper operation, check the current draw of the motor. The motor amperage
should not exceed the maximum full load amps listed on the motor nameplate.
Fan Shut Down
1. Press the fan STOP button on units equipped with motor controls.
2. Shut off electrical power at main and at disconnect.
3. Close the roof openings and cover fan inlet to prevent harmful back-draft air currents from passing
through the grain and to avoid grain infestation from rodents and insects.
Maintaining Grain Quality
To properly maintain the quality of stored grain, it is necessary to keep the grain dry, cool and insect free.
Any one of these problems can contribute to spoilage. Wet, warm grain promotes insect growth as well
as grain spoilage. Cool, dry grain can keep for long periods of time. (See Chart on Page 19.)
It is recommended that the grain be kept cool (avoid freezing as freezing can reduce quality). Grain
should be cooled through the fall and winter, warmed in the spring and summer.
Make certain all guards and covers are securely in place.

6. Fan Operation
PNEG-010 Vane Axial Fan 19
Grain Storage
IMPORTANT: Conditions and requirements may vary from area to area. Contact the local agriculture
extension office or state agriculture university for more exact guidelines.
Average grain temperature should be above 35°F in the winter and below 65°F in the summer. Always
try to keep the grain within 10°F-15°F of the average monthly outside temperature. This means grain
may need to be aerated on warm days during the winter to stay above 35°F when freezing temperatures
are predominate. During the summer it may be necessary to aerate the grain on cool nights, so the 65°F
temperature is not exceeded during the hot days of summer.
If the grain is to be stored more than one (1) year, it has to be recooled the following fall and winter,
repeating the process as long as the grain is in storage. Frequent and regular inspection (at least
weekly during fall and spring) is the best prevention against grain spoilage.
Equilibrium Moisture Chart
Approximate Allowable Holding Time for Field-Shelled Corn, to Maintain Grade*
Air
Temperature
Percentage Relative Humidity
35 40 45 50 55 60 65 70 75 80 85 90 95 100
20°F 11.2 11.7 12.7 13.7 14.5 15.1 16.2 17.1 18.0 19.6 21.2 23.5 25.8 29.1
30°F 10.8 11.3 12.2 13.1 13.9 14.6 15.5 16.4 17.4 18.7 20.2 22.5 25.0 28.3
40°F 10.5 11.0 11.7 12.5 13.3 14.0 14.8 15.5 16.6 17.8 19.4 21.5 24.2 27.5
50°F 10.1 10.6 11.3 12.0 12.7 13.3 14.1 14.8 15.8 16.9 18.6 20.5 23.4 26.7
60°F 9.7 10.2 10.9 11.6 12.1 12.7 13.4 14.2 15.0 16.0 17.8 19.5 22.6 25.9
70°F 9.0 9.7 10.4 11.1 11.5 12.0 12.8 13.5 14.5 15.4 16.8 18.5 21.3 24.5
80°F 8.3 9.1 9.8 10.5 10.8 11.2 12.1 13.0 13.9 14.8 15.8 17.4 20.0 22.8
Grain
Temperature 15% Days 18% Days 20% Days 22% Days 24% Days 26% Days 28% Days 30% Days
40°F 898 195 85 54 38 28 24 20
50°F 451 102 46 28 19 16 13 11
60°F 242 63 26 16 10 86.5 5.5
70°F 147 37 13 8 5 4 3.5 3
80°F 109 27 10 6432.5 2
*Allowable holding time for field-shelled corn at various grain temperatures and moisture.
Safe moisture for normal winter storage of shelled corn is about 15%. Grain to be stored through the
summer or long term, needs to be 1 to 3 points dryer.

6. Fan Operation
20 PNEG-010 Vane Axial Fan
Approximate Hours of Fan Time to Change Bin Temperature
1. Bushels are rounded and approximate.
2. The hours required are based on clean grain. High moisture grain and grain containing fines or foreign material will
require more time to complete the air change.
3. Not Recommended: Bins in the NR range, may require fan(s) of a different size to get the cool time into the
accepted range.
4. Bins requiring more than 100 hours of aeration to totally change the temperature may require continuous aeration
at about 1/10th CFM per bushel or some other acceptable method.
Fan Blade Removal and Installation
The fan blade is secured to the motor shaft by the use of a taper-lock bushing, motor shaft key, and
cap screws. The size, quantity, and torque of cap screws required will depend on the model of the fan.
Fan Size
HP
Bin Diameter Approximate 22' to Eave-Approximate Hours
of Fan Time Required Approximate 32' to Eave
18 21 24 27 30 33 36 42 48 36 42 48
173 79 90 NR NR NR NR NR NR NR NR NR
1.5 56 61 65 66 76 82 92 NR NR NR NR NR
344 51 52 57 63 69 78 93 NR NR NR NR
738 42 44 47 52 56 61 71 81 79 93 NR
10 35 37 41 42 45 49 53 62 71 72 82 92
15 30 32 35 39 40 42 45 54 63 62 70 80
Approximate BU 4500 6500 8500 11000 13500 16500 19500 27000 35500 28000 38500 50500
Always disconnect and lock out power before working on or around fan.
Although the taper-lock method of retaining the blade onto the motor shaft is
very simple and obvious, it is essential that the following points be read
carefully and fully understood, as improper installation can result in serious or
fatal injury caused by a loose, fast flying blade.
THREADED BUSHING HOLES: The threaded holes within the bushing are
provided for disassembly purposes only. Do not attempt to use these holes for
reassembly, as they will not allow the parts to become locked onto the shaft,
thereby causing an extremely hazardous operating condition.
CLEARANCE HOLES: When reassembling parts, the cap screws must be
installed through the UNTAPPED.
NR