GSi CF-3 User manual

OWNER’S MANUAL
Centrifugal Fan
INSTALLATION AND OPERATION
PNEG-163-04
Model #:
Serial #:
PNEG-163-04
DATE: 4-1-05

_____ 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
_____ 15.Manual Supplements for Double Inlet Fans
Tester Signature___________________________________
Date_________________________
CHECK LIST

TABLE OF CONTENTS
Safety .............................................................................................................................................................. 4
Safety Guidelines ................................................................................................................................. 4
Safety Decals ....................................................................................................................................... 7
Roof Damage Warning and Disclaimer ................................................................................................ 8
Installation ............................................................................................................................................................. 9
Pre-Installation Requirements .............................................................................................................. 9
Fan Installation ..................................................................................................................................... 9
Electrical Installation ........................................................................................................................... 10
Test Run ........................................................................................................................................... 10
Ground Rod Installation ....................................................................................................................... 11
Fan Specifications ........................................................................................................................................... 12
1750 rpm Fan Electrical Specifications .............................................................................................. 12
3500 rpm Fan Electrical Specifications .............................................................................................. 13
Fan Dimensions .................................................................................................................................. 14
Discharge Bolt Pattern Dimensions ................................................................................................... 15
Inlet Cone Dimensions ....................................................................................................................... 16
Fan Wheel Dimensions ...................................................................................................................... 17
Fan Pad Location ............................................................................................................................... 18
Operation ............................................................................................................................................................ 19
Maintenance and Troubleshooting ..................................................................................................................... 20
Fan Wheel Removal and Installation ................................................................................................. 20
Fan Wheel Inspection and Maintenance ............................................................................................ 21
Taper Bushing Torque Requirements ................................................................................................. 21
Fan Motor Removal & Installation ...................................................................................................... 22
General Inspections ........................................................................................................................... 22
Lubrication & Bearings ....................................................................................................................... 23
Troubleshooting Charts ...................................................................................................................... 24
Parts ............................................................................................................................................................ 26
Main Assembly - 1750 rpm Fans ........................................................................................................ 26
CF-3; CF-5 ......................................................................................................................... 26
CF-7.5; CF-10 .................................................................................................................... 27
CF-15; CF-20 ..................................................................................................................... 28
CF-25; CF-30 ..................................................................................................................... 29
CF-40; CF-50 ..................................................................................................................... 30
Main Assembly - 3500 rpm Fans ........................................................................................................ 31
CHS-3; CHS-5 ................................................................................................................... 31
CHS-7.5; CHS-10 .............................................................................................................. 32
CHS-15; CHS-20 ............................................................................................................... 33
CHS-30; CHS-40 ............................................................................................................... 34
CHS-50 ........................................................................................................................... 35
Main Assembly - Single Inlet Direct Drive Fans ................................................................................. 36
Main Assembly - Double Inlet Fans .................................................................................................... 37
Component Sub-Assemblies - Direct Drive and Double Inlet Fans ................................................... 38
Companion Flange - C-8570 ............................................................................................. 38
Double Inlet Electric Motor Drives ..................................................................................... 39
Shaft Coupling ................................................................................................................... 39
Control Box Assembly ........................................................................................................................ 40
Control Box Sub-Assembly ................................................................................................ 40
230 Volt Single Phase ....................................................................................................... 41
230 Volt Three Phase ........................................................................................................ 42
460 Volt Three Phase ........................................................................................................ 44
Motor Conduit Assembly .................................................................................................................... 47
Schematics/Wiring Diagrams ............................................................................................................................. 50
230 Volt Single Phase ........................................................................................................................ 50
CF-3-1C ........................................................................................................................... 50
CHS-3-1C .......................................................................................................................... 52
CF-5-1C; CF-7.5-1C; CHS-5-1C; CHS-7.5-1C .................................................................. 54
CF-10-1C; CHS-10-1C ....................................................................................................... 56
CF-15-1C ........................................................................................................................... 58
230 Volt Three Phase ......................................................................................................................... 60
460 Volt Three Phase ......................................................................................................................... 62
Appendix A - Additional Double Inlet Information ............................................................................................... 64
Warranty ............................................................................................................................................................ 65
Double Inlet Fan Supplements .............................................. Pneg-1436 (Bearings) & Pneg-1437 (Shaft Coupling)

Centrifugal Fan PNEG-163-04 4
This manual contains information that is important for you, the owner/operator, to know and under-
stand. 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 it’s safety instructions is a misuse of the equipment and may lead to serious injury or death.
SAFETY GUIDELINES
DANGER indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
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 hazard-
ous situation which, if not avoided, may result in property damage.
NOTE indicates information about the equipment that you should pay spe-
cial attention to.
SAFETY

PNEG-163-04 Centrifugal Fan 5
PREP ARE 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.
PRACTICE SAFE MAINTENANCE
Understand service procedures before doing
work. Keep area clean and dry.
Never lubricate, service, or adjust machine while
it is in operation. Keep hands, feet, and clothing
from rotating belt and idlers.
Keep all parts in good condition and properly
installed. Fix damage immediately. Replace
worn or broken parts. Remove any build up
grease, oil, or debris.
FOLLOW SAFETY INSTRUCTIONS
Carefully read all safety messages in this
manual and safety signs on your equipment.
Keep signs in good condition. Replace missing
or damaged safety signs. Be sure new equip-
ment 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 condi-
tion. 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
and need assistance, contact your dealer.
SAFETY

Centrifugal Fan PNEG-163-04 6
WEAR PROTECTIVE CLOTHING
Wear close fitting clothing and safety equipment
appropriate to the job.
Ear Plugs or Muffs should be worn at all times to
protect ears from high noise levels.
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.
A respirator may be needed to prevent breathing
potentially toxic fumes and dust.
Wear hard hat and steel toe boots to help protect
your head and toes from falling debris.
Eye Protection
Gloves
Steel Toe
Boots
Respirator
Hard Hat
INST ALL & OPERA TE ELECTRICAL
EQUIPMENT PROPERL Y
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 .
Hearing Protection
INST ALL & OPERA TE GAS-FIRED
EQUIPMENT PROPERL Y
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 .
SAFETY

PNEG-163-04 Centrifugal Fan 7
SAFETY DECALS
Safety decals should be read and understood by all people in the grain
handling area. If a decal is damaged or is missing contact:
The GSI Group, Inc.
1004 E. Illinois St.
Assumption, IL 62510
217-226-4421
A free replacement will be sent to you.
Part Number: DC-1225
Size: 4.875” x 2.25”
Located on fan housing side near fan inlet.
Part Number: DC-113
Size: 4.75” x 1.625”
Located on painted inlet cone
of fan housing.
Part Number: DC-1224
Size: 2.625” x 4.625”
Located on fan housing side
above motor & located on
outside of control box lid.
Part Number: DC-1749
Size: 1.75” x 3.75”
Located on fan coupling guard on motor
driven fans.
Part Number: DC-1544
Size: 4.00” x 6.00”
Located on fan housing motor side.
Part Number: DC-163
Located on fan housing motor side.
Part Number: DC-889
Size: 2.813” x 1.375”
Located inside control box.
Part Number: DC-219
Located on fan inlet cone.

Centrifugal Fan PNEG-163-04 8
Roof Damage Warning And Disclaimer
GSI 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 SYS-
TEMS. GSI DOES NOT RECOMMEND THE USE OF DOWN-
WARD FLOW SYSTEMS (SUCTION). SEVERE ROOF DAM-
AGE CAN RESULT FROM ANY BLOCKAGE OF AIR PAS-
SAGES. RUNNING FANS DURING HIGH HUMIDITY/COLD
WEATHER CONDITIONS CAN CAUSE AIR EXHAUST OR
INTAKE PORTS TO FREEZE.
General Safety Statements
Thank you for choosing a GSI Group product. It is de-
signed to give excellent performance and service for
many years.
It is the plan of The GSI Group to improve its product
whenever possible and practical to do so. We reserve
the right to change, improve, and modify products at
any time without obligation to make changes, improve-
ments, and modifications on equipment sold previously.
The principal concern of the The GSI Group Inc.
("GSI") is your safety and the safety of others associ-
ated with grain handling equipment. This manual is writ-
ten to help you understand safe operating procedures,
and some of the problems that may be encountered by
the operator or other personnel.
As owner and/or operator, it is your responsibility to
know what requirements, hazards and precautions ex-
ist, and to inform all personnel associated with the equip-
ment, or who are in the dryer area. Avoid any alter-
ations to the equipment. Such alterations may produce
a very dangerous situation, where serious injury or death
may occur.
THIS MANUAL DESCRIBES THE OPERA TION OF
THE CENTRIFUGAL F AN. THIS PRODUCT IS IDEAL
FOR THE CONDITIONING OF CORN, SOYBEANS,
AND OTHER SELECT GRAINS. ANY OTHER USE IS
CONSIDERED A MISUSE OF THE PRODUCT.
CAUTION
This product has sharp edges! These
sharp edges may cause serious injury.
To avoid injury handle sharp edges with
caution and use proper protective
clothing and equipment at all times.
SAFETY

PNEG-163-04 Centrifugal Fan 9
INSTALLATION
Pre-Installation Requirements
Foundation Use the dimension illustration in the speci-
fications section of this manual to determine the physi-
cal 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 your 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.
The fan pad should be offset 2.00” below the top of the
bin foundation. Refer to the dimension illustration “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 con-
struction, with a gradual angle to the rectangular open-
ing 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 pres-
sure from building in the bin. See “Roof Damage Warn-
ing” on the previous page.
Power Supply Adequate power must be supplied to
the fan for reliable operation. Consult the local power
company and have a representative survey the installa-
tion. Only the power company can ensure that their sys-
tem 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 in this manual
to size the supply wire according to the horsepower of
the fan and the distance to the power supply. Refer to
the “Fan Specifications” section 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.
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 wheel. Wheel should rotate freely
and should not make contact with the housing
sides or inlet cone.
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 from the bin plenum. Inspect the
transition duct as well. Seal any leaks that may 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 adjust the legs
provided on the fan housing to level the fan. The
legs should be adjusted so that when level all five

Centrifugal Fan PNEG-163-04 10
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 the distance away from supply
and fan horsepower. (See tables in specification
section of this manual)
3. Verify that the safety disconnect is installed and
sized correctly for the fan size. (See tables in
specification section of this manual)
4. Install a machine to earth ground for each individual
fan. Refer to the “Ground Rod Installation” page 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.
1PH 230V L1, L2, N, G
3PH 230V L1, L2, L3, N, G
3PH 230V with optional
transformer kit L1, L2, L3, G
3PH 460V/575V L1, L2, L3, G
INSTALLATION
DANGER
ALWAYS DISCONNECT AND LOCK
OUT POWER BEFORE WORKING
ON OR AROUND FAN.
IMPORTANT
ELECTRICAL INST ALLA TION MUST BE PERFORMED BY A
QUALIFIED ELECTRICIAN, IN ACCORDANCE WITH
NA TIONAL AND LOCAL ELECTRICAL CODES. ANY
VIOLA TION OF ELECTRICAL WIRING CODES COULD
JEOP ARDIZE THE W ARRANTY .
6. The starter controls require 115VAC power to
operate. On 230 Volt 3 Phase units, this power is
supplied by L1 to neutral.
Check this voltage before starting unit. If voltage is not
within 105-125VAC, check for proper voltage on L2 or
L3 and move to appropriate leg. If voltage is not
acceptable, install a 0.25 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 wheel rotation is in the direction that the decal on
the fan housing illustrates. If the decal is missing, note
that the wheel should operate counterclockwise when
viewed through the inlet guard on standard construction
fans. If the wheel is rotating the wrong direction, have
your electrician correct the wiring.
CAUTION
THE VOL T AGE BETWEEN L1 AND N MUST BE
1 15VAC. ANY OTHER VOLTAGE WILL CAUSE
DAMAGE TO EQUIPMENT.
legs touch the pad. Fans not resting on support
legs may have excess vibration which can lead to
premature wear and tear on fan components.

PNEG-163-04 Centrifugal Fan 11
INSTALLATION
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.
#6 or approved
size bare copper
ground wire
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 feet away. This ground needs to be as
close to the fan as possible, but no more than 8 feet
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 ma-
chine 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 sys-
tems.
Machine To Earth Ground
(Ground rods and wires are not supplied ). It is recom-
mended 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 up and down, the
water will work its way down the hole,
making it 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 recommended
for grounding.
Previously Installed Units
Proper Installation
of the Ground Rod
It is recommended that previously installed units be
checked to see that a machine to earth ground has been
installed by an electrician.
Dig a hole large
enough to hold 1
or 2 gallons of
water.
Work the ground
rod into the earth
until it is com-
pletely in the
ground.

Centrifugal Fan PNEG-163-04 12
FAN SPECIFICATIONS
1750 rpm Fan Electrical Specifications
IMPORTANT
THE VALUES LISTED IN THIS CHART ARE RECOMMENDATIONS ONLY. ELECTRICAL
INST ALLA TION MUST BE PERFORMED BY A QUALIFIED ELECTRICIAN, IN ACCORDANCE
WITH NA TIONAL AND LOCAL ELECTRICAL CODES. ANY VIOLATION OF ELECTRICAL
WIRING CODES COULD JEOPARDIZE THE W ARRANTY .
1111
230 230 460 575 230 230 460 575 230 230 460 575 230 230 460 575
17 9.6 4.8 3.9 28 15.2 7.6 6.1 40 22 11 9 50 28 14 11
50 ' RUN 12 14 14 14 10 14 14 14 8 10 14 14 6 10 14 14
100 ' RUN 12 14 14 14 8 12 14 14 8 10 14 14 6 10 14 14
200 ' RUN 8 12 14 14 6 10 14 14 4 8 14 14 4 6 12 14
300 ' RUN 6 10 14 14 4 8 14 14 3 6 12 14 2 4 10 12
50 ' RUN 10 12 12 12 8 12 12 12 6 10 12 12 4 8 12 12
100 ' RUN 8 12 12 12 6 10 12 12 6 8 12 12 4 8 12 12
200 ' RUN 6 10 12 12 4 8 12 12 3 6 12 12 2 4 10 12
300 ' RUN 4 8 12 12 3 6 12 12 1 4 10 12 0 3 8 10
30 15 8 6 50 25 12 10 70 40 20 15 90 45 25 20
50 15 15 15 70 30 15 15 100 40 20 15 125 50 30 20
* Based on NEC Tables 430-148 & 430-150
FULL LOAD CURRENT (AMPS) *
FUSE SIZE (SLOW BLOW)
MINIMUM WIRE SIZE
MINIMUM WIRE SIZE
BREAKER SIZE
FAN HORSEPOWER
PHASE
VOLTS
Aluminum WireAluminum Wire
Copper Wire Copper Wire Copper WireCopper Wire
Aluminum Wire Aluminum Wire
3333
3 5 7.1/2 10
FAN HORSEPOWER
PHASE 1
VOLTS 230 230 460 575 230 460 575 230 460 575 230 460 575 230 460 575 230 460 575
FULL LOAD CURRENT (AMPS) * 65 42 21 17 54 27 22 68 34 27 80 40 32 104 52 41 130 65 52
MINIMUM WIRE SIZE
50' RUN 4 6 10 12 4 10 10 4 8 10 388166 00 4 6
100' RUN 4 6 10 12 4 10 10 4 8 10 388166 00 4 6
200' RUN 3 4 10 12 4 10 10 3 8 10 388166 00 4 6
300' RUN 1 4 10 10 3 8 10 268168066 00 4 6
MINIMUM WIRE SIZE
50' RUN 2 4 10 10 3 8 10 268168 00 4 4 0000 2 4
100' RUN 2 4 10 10 3 8 10 268168 00 4 4 0000 2 4
200' RUN 138 10 2 8 10 168068 00 4 4 0000 2 4
300' RUN 00 168068 00 4 6 00 4 6 000 4 4 0000 2 4
FUSE SIZE (SLOW BLOW) 125 70 40 30 90 45 40 110 60 45 125 60 50 175 80 70 200 100 80
BREAKER SIZE 175 70 40 30 90 50 40 110 60 50 125 60 50 175 80 70 200 100 80
* Based on NEC Tables 430-148 & 430-150
Aluminum Wire
Copper Wire Copper Wire Copper Wire
Aluminum Wire Aluminum WireAluminum Wire Aluminum Wire Aluminum Wire
Copper Wire Copper Wire Copper Wire
33
5040
3333
30252015

PNEG-163-04 Centrifugal Fan 13
FAN SPECIFICATIONS
3500 rpm Fan Electrical Specifications
IMPORTANT
THE VALUES LISTED IN THIS CHART ARE RECOMMENDATIONS ONLY. ELECTRICAL
INST ALLA TION MUST BE PERFORMED BY A QUALIFIED ELECTRICIAN, IN ACCORDANCE
WITH NA TIONAL AND LOCAL ELECTRICAL CODES. ANY VIOLATION OF ELECTRICAL
WIRING CODES COULD JEOPARDIZE THE W ARRANTY .
1111
230 230 460 575 230 230 460 575 230 230 460 575 230 230 460 575
17 9.6 4.8 3.9 28 15.2 7.6 6.1 40 22 11 9 50 28 14 11
50 ' RUN 12 14 14 14 10 14 14 14 8 10 14 14 6 10 14 14
100 ' RUN 12 14 14 14 8 12 14 14 8 10 14 14 6 10 14 14
200 ' RUN 8 12 14 14 6 10 14 14 4 8 14 14 4 6 12 14
300 ' RUN 6 10 14 14 4 8 14 14 3 6 12 14 2 4 10 12
50 ' RUN 10 12 12 12 8 12 12 12 6 10 12 12 4 8 12 12
100 ' RUN 8 12 12 12 6 10 12 12 6 8 12 12 4 8 12 12
200 ' RUN 6 10 12 12 4 8 12 12 3 6 12 12 2 4 10 12
300 ' RUN 4 8 12 12 3 6 12 12 1 4 10 12 0 3 8 10
30 15 8 6 50 25 12 10 70 40 20 15 90 45 25 20
50 15 15 15 70 30 15 15 100 40 20 15 125 50 30 20
* Based on NEC Tables 430-148 & 430-150
FAN HORSEPOWER
PHASE
VOLTS
FULL LOAD CURRENT (AMPS) *
MINIMUM WIRE SIZE
MINIMUM WIRE SIZE
3 5 7.1/2 10
3333
Aluminum Wire
Copper Wire Copper Wire Copper WireCopper Wire
Aluminum Wire Aluminum Wire Aluminum Wire
FUSE SIZE (SLOW BLOW)
BREAKER SIZE
FAN HORSEPOWER
PHASE
VOLTS 230 460 575 230 460 575 230 460 575 230 460 575 230 460 575
FULL LOAD CURRENT (AMPS) * 42 21 17 54 27 22 80 40 32 104 52 41 130 65 52
MINIMUM WIRE SIZE
50' RUN 6 10 12 4 10 10 3 8 8 1 6 6 00 4 6
100' RUN 6 10 12 4 10 10 3 8 8 1 6 6 00 4 6
200' RUN 4 10 12 4 10 10 3 8 8 1 6 6 00 4 6
300' RUN 4 10 10 3 8 10 1 6 8 0 6 6 00 4 6
MINIMUM WIRE SIZE
50' RUN 4 10 10 3 8 10 1 6 8 00 4 4 0000 2 4
100' RUN 4 10 10 3 8 10 1 6 8 00 4 4 0000 2 4
200' RUN 3 8 10 2 8 10 0 6 8 00 4 4 0000 2 4
300' RUN 1 6 8 0 6 8 00 4 6 000 4 4 0000 2 4
FUSE SIZE (SLOW BLOW) 70 40 30 90 45 40 125 60 50 175 80 70 200 100 80
BREAKER SIZE 70 40 30 90 50 40 125 60 50 175 80 70 200 100 80
* Based on NEC Tables 430-148 & 430-150
Copper Wire
Aluminum Wire
2015
33
5040
333
30
Copper Wire
Aluminum WireAluminum Wire Aluminum Wire Aluminum Wire
Copper Wire Copper Wire Copper Wire

Centrifugal Fan PNEG-163-04 14
FAN SPECIFICATIONS
FAN A B C D E F G H I J K L M N
CF-3 44 37.875 25.094 15.313 30.813 23.593 13.5 32.094 15.688 28.813 15.313 19.656 24.875 26.125
CF-5 48.563 42 27.719 17.063 34.688 27.25 14.25 36.125 16.438 32.563 17.063 21.968 27.375 29.125
CF-7.5 48.563 42 27.719 17.063 38.438 27.25 18 36.125 20.188 36.313 17.063 21.968 27.375 29.125
CF-10 53 45.938 30.125 18.406 38.625 29.875 17.438 40.094 19.781 35.844 18.406 24.656 30 31.75
CF-15 53 45.938 30.125 18.406 40.063 29.875 18.875 40.094 21.219 37.281 18.406 24.656 30 31.75
CF-20 58.906 50.563 33.34 20.094 45.438 33.25 19.563 44.438 21.813 42.906 20.094 27.281 33.625 35.125
CF-25 58.906 50.563 33.34 20.094 47.75 33.25 21.875 44.438 24.063 45.125 20.094 27.281 33.625 35.125
CF-30 64.406 55.75 36.219 22.25 47.688 33.25 21.875 49.844 24.125 45.25 22.313 30.532 36.5 38.375
CF-40 64.406 55.75 36.219 22.25 49.5 33.25 23.688 49.844 25.938 47.063 22.313 30.532 36.5 38.375
CF-50 64.406 55.75 36.219 22.25 50.625 33.25 25.25 49.844 27.5 48.625 22.313 30.532 36.5 38.375
CF-30D-
CF-50D
56.498 51.756 32.938 22.688 90.625 33.25 44 42.5 46.532 89.563 22.688 25.089 33.5 35.125
FAN A B C D E F G H I J K L M N
CHS-3 30.031 29.813 17.375 12.813 27.188 16.5 8.125 24.156 10.281 25.375 12.813 14.156 16.5 17.875
CHS-5 30.031 29.813 17.375 12.813 28.969 16.5 10 24.156 12.156 27.25 12.813 14.156 16.5 17.875
CHS-7.5 36.375 33.375 20.875 13.281 29.938 19 10 27.688 12.219 28.219 13.281 17.219 20.5 21.75
CHS-10 36.375 33.375 20.875 13.281 30.938 19 11 27.688 13.219 29.219 13.281 17.219 20.5 21.75
CHS-15 36.375 33.375 20.875 13.281 32.938 19 13 27.688 15.219 31.219 13.281 17.219 20.5 21.75
CHS-20 44 37.875 25.094 15.313 37.813 23.563 12.563 32.094 14.75 35.813 15.313 19.656 24.875 26.125
CHS-30 44 37.875 25.094 15.313 39.313 23.563 14.063 32.094 16.25 37.313 15.313 19.656 24.875 26.125
CHS-40 44 37.875 25.094 15.313 41.75 23.563 16.5 32.094 18.688 39.75 15.313 19.656 24.875 26.125
CHS-50 48.563 42 27.719 17.063 41.125 27.25 15.75 36.125 17.938 39 17.063 21.968 27.375 29.125
Note:
All dimensions in inches to nearest 1/32".
Note:
Add 8.125" to ' A ' dimension for 3500 rpm fans with control boxes
1750 rpm Fan Housing Dimensions
3500 rpm Fan Housing Dimensions
Minimum Leg Height ( Z ) = 1.875”

PNEG-163-04 Centrifugal Fan 15
FAN SPECIFICATIONS
FAN A B C D E F G H I J
CF-3 1.531 4.688 5.906 5.906 7.094 1.094 0.875 2.406 7.844 ***
CF-5 1.813 5.125 8.438 8.438 5.218 0.875 0.75 2.75 8.031 ***
CF-7.5 1.813 5.125 8.438 8.438 5.218 0.875 0.75 3.75 9.906 ***
CF-10 1.594 3.5 11.5 11.5 3.344 0.813 0.688 3.75 9.594 10.563
CF-15 1.594 3.5 11.5 11.5 3.344 0.813 0.688 5.75 10.313 11.281
CF-20 1.656 8.156 8.469 8.469 8.188 0.75 0.75 5.75 10.5 11.656
CF-25 1.656 8.156 8.469 8.469 8.188 0.75 0.75 5.75 11.656 12.813
CF-30 1.281 8.188 8.438 8.438 8.156 0.75 0.75 5.75 11.656 ***
CF-40 1.281 8.188 8.438 8.438 8.156 0.75 0.75 5.75 12.563 ***
CF-50 1.281 8.188 8.438 8.438 8.156 0.75 0.75 5.75 13.344 ***
CF-30D-
CF-50D
1.313 8.031 8.438 8.438 8.219 0.656 0.813 3.0 * 22.906 ***
* 4 holes @ 6.00" Spacing
FAN
A B C D E F G H I J
CHS-3 1.625 4.313 4.125 4.125 4.063 1 0.781 2 5.125 ***
CHS-5 1.625 4.313 4.125 4.125 4.063 1 0.781 2 6.094 ***
CHS-7.5 1.625 3.531 4.75 4.75 6 1.094 0.875 2 6.094 ***
CHS-10 1.625 3.531 4.75 4.75 6 1.094 0.875 2 6.094 ***
CHS-15 1.625 3.531 4.75 4.75 6 1.094 0.875 2 6.094 ***
CHS-20 1.531 4.688 5.906 5.906 7.094 1.094 0.875 2.406 7.375 ***
CHS-30 1.531 4.688 5.906 5.906 7.094 1.094 0.875 2.781 8.125 ***
CHS-40 1.531 4.688 5.906 5.906 7.094 1.094 0.875 3.063 9.344 ***
CHS-50 1.813 5.125 8.438 8.438 5.219 0.875 0.75 3.063 8.781 ***
Note:
All dimensions in inches to nearest 1/32".
1750 rpm Discharge Dimensions
3500 rpm Discharge Dimensions

Centrifugal Fan PNEG-163-04 16
FAN SPECIFICATIONS
Inlet Cone DImensions
GAP
The “GAP” between the cone and wheel should
be equal distance all around the cone’s inner edge.
OVERLAP
The “OVERLAP” of the wheel over the cone
should be a minimum distance to allow free rotation
without interference.
Inlet Cone to Wheel Clearances
15 C-7743 18.625 4.000 10.375 9.875 0.688 8
18 C-7745 22.750 5.388 12.625 21.750 0.875 16
22 C-7747 27.125 6.750 15.625 26.125 0.875 16
24 C-7749 30.500 7.250 17.000 29.125 1.000 16
27 C-7751 33.125 8.000 18.813 31.750 1.000 16
30 C-7753 36.500 9.000 21.125 35.125 1.000 16
33 C-7754 38.750 10.000 23.063 38.376 1.000 16
Add suffix to painted part number for correct color. "-Y" = YELLOW, "-R" = RED, "-O" = ORANGE
Hole Size
Painted Part
Number
Size A B C D Number of
Holes

PNEG-163-04 Centrifugal Fan 17
FAN SPECIFICATIONS
Fan Wheel DImensions
Fan Model Wheel Assembly
Part Number * Size A B C
1750 rpm Fans
CF-3 CH-6878 22 23.000 15.875 4.956
CF-5 C-956 24 25.250 17.188 5.938
CF-7.5 C-957 24 25.250 17.188 8.875
CF-10 C-8533 27 27.625 19.000 8.375
CF-15 C-960 27 27.625 19.000 9.750
CF-20 CH-2076 30 30.625 21.313 9.625
CF-25 C-2046 30 30.625 21.313 10.750
CF-30 C-7319 33 33.156 23.428 9.000
CF-40 C-7320 33 33.156 23.428 11.625
CF-50 C-8517 33 33.156 23.428 13.500
3500 rpm Fans
CHS-3 FH-5464 15 15.500 10.625 2.875
CHS-5 FH-5465 15 15.500 10.625 4.750
CHS-7.5 FH-5466 18 18.750 12.750 3.000
CHS-10 FH-5467 18 18.750 12.750 4.000
CHS-15 FH-5468 18 18.750 12.750 6.000
CHS-20 FH-5469 22 23.000 15.875 3.938
CHS-30 FH-5470 22 23.000 15.875 5.938
CHS-40 FH-5758 22 23.000 15.875 7.875
CHS-50 FH-5852 24 25.250 17.188 6.938
* Wheel Assembly isBlade and Bushing

Centrifugal Fan PNEG-163-04 18
FAN SPECIFICATIONS
FAN PAD LOCATION
Fan pad should be perpendicular to bin wall.
Fan discharge centerline should lie on bin centerline.
Recommended thickness for pad is 4.00” minimum.
Top surface of pad should be 2.00” below bin foundation.
Fans with downwind heaters require fan pad to be
48.00” wide and add 33.00” onto length ( D ).
IMPORTANT
FAN P AD AND FAN MUST BE LEVEL AND SMOOTH
FOR PROPER OPERATION. VIBRATION PROBLEMS
CAN RESULT FROM IMPROPER FAN LEVELING.
TR-4734
A = 20”
B = 10”
C = 40”
D = 40”
TR-7048
A = 45”
B = 10”
C = 40”
D = 48”
TR-6918 & TR-6919
A = 32” without heater
A = 65” with downwind heater
B = 13”
C = 48”
D = 52”
TR-7049
A = 45” without heater
A = 78” with downwind heater
B = 13”
C = 48”
D = 52”
TR-6207
A = 42” without heater
A = 78” with downwind heater
B = 13”
C = 48”
D = 60”
TR-6958
A = 55” without heater
A = 85” with downwind heater
B = 13”
C = 48”
D = 60”
TR-6853 (double inlet)
A = 54” without heater
A = 88” with downwind heater
B = 28”
C = 100”
D = 60”
Bin Side Wall Tangent Line
Bin Side Wall
Dimension Edge
from Bin Side Wall
Centerline of Bin

PNEG-163-04 Centrifugal Fan 19
OPERATION
After initial installation and also prior to using the unit
each season, check the operation to ensure proper func-
tioning, adjustment, and reliability.
FAN START-UP
1. Make certain the unit is properly installed and
connected, as described within the installation
section of this manual. All air passage joints and
seams must be well sealed.
2. With main power supply turned OFF, rotate the
wheel by hand to make certain it turns freely
without contacting the housing or inlet cone.
3. Open roof doors to allow airflow at all times when
fan is operating.
4. Turn ON main power disconnect switch.
5. Press the fan START button and check the
following:
A. Check direction of wheel rotation. Correct if
needed by following the instructions on the motor.
B. Check to make sure the wheel 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.
WARNING
MAKE CERTAIN ALL GUARDS AND
COVERS ARE SECURELY IN PLACE.
IMPORT ANT
REFER TO ROOF DAMAGE DISCLAIMER IN THE
SAFETY SECTION OF THIS MANUAL.
2. Shut off electrical power at main and at discon-
nect.
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.
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.
Grain Storage
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 10-15°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 ex-
ceeded during the hot days of summer.
If the grain is to be stored more than one 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).
IMPORT ANT
CONDITIONS AND REQUIREMENTS MAY V AR Y FROM
AREA T O AREA. CONTACT THE LOCAL AGRICUL TURE
EXTENSION OFFICE OR STA TE AG . UNIVERSITY FOR
MORE EXACT GUIDELINES.

Centrifugal Fan PNEG-163-04 20
MAINTENANCE & TROUBLESHOOTING
F an Wheel Removal & Installation
The fan wheel is secured to the motor shaft by the
use of a taper-lock bushing, motor shaft key, and
capscrews. The size, quantity, and torque of capscrews
required will depend on the model of the fan.
Removal
1. LOCK-OUT THE MAIN POWER SUPPLY and re-
move the fan guard and inlet cone.
2. Remove the three capscrews from the clearance
holes in taper-lock bushing. Inspect for thread dam-
age and set aside for later reinstallation (do not use
these bolts for step 3, bushing removal).
3. Install two Grade 5 (or better) capscrews into the
THREADED HOLES in the bushing and turn them
in by hand until they bottom against the front sur-
face of the wheel. These capscrews should not be
used for reassembly, as some thread distortion could
occur during the removal operation. Grade 5 screws
are marked with three 120° spokes on the head and
are more durable than low strength unmarked bolts.
NOTE: DO NOT ATTEMPT TO USE LOW STRENGTH
(UNMARKED) BOLTS TO REMOVE THE BUSH-
ING, AS THE BOLTS MAY BREAK OFF.
4. Block wheel to prevent it from turning, and GRADU-
ALLY TURN IN THE CAPSCREWS (up to 1/4 turn
at time), until the wheel breaks loose from the bush-
ing and motor shaft. Carefully remove bushing and
wheel. ( With the wheel free from the bushing, a
wheel puller can be used to pull the bushing off of
motor shaft, if required. ) Reattach bushing onto
wheel to prevent the loss of parts and also to main-
tain the original alignment of bushing to wheel.
Inspect wheel and bushing at this time, looking for
any cracks, thread or bolt damage, warpage, etc.
Consult your dealer or the factory for any questions
concerning damage.
Installation
1. Carefully clean motor shaft, key, bushing and bore
of wheel. MAKE SURE MAIN POWER IS LOCKED
OUT, and that shaft and key are completely free of
rust and burrs. Do NOT lubricate the bushing or
capscrews. CHECK AND MAKE SURE ALL MO-
TOR MOUNT BOLTS ARE PROPERLY TIGHT-
ENED. Before installing the wheel, check the fol-
lowing:
(1) All foreign material should be removed
from the wheel.
(2) Carefully inspect the wheel weldment and
hub casting for damage, cracks, or other
defects. Contact the factory if there is any
question regarding the structural integrity
of the wheel.
CAUTION
AL THOUGH THE TAPER-LOCK METHOD OF RET AINING
THE WHEEL ONT O THE MOT OR SHAFT IS VER Y SIMPLE
AND OBVIOUS, IT IS ESSENTIAL THA T THE FOLLOWING
POINTS BE READ CAREFULLY AND FULLY
UNDERSTOOD, AS IMPROPER INSTALLATION CAN
RESUL T IN SERIOUS OR FAT AL INJURY CAUSED BY A
LOOSE, FAST FLYING WHEEL.
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
capscrews must be installed through the UNTAPPED
CLEARANCE HOLES to cause the wheel to be pulled
forward onto the tapered bushing, thus locking the
parts securely onto the motor shaft. Refer to text
for assembly details.
DANGER
ALWAYS DISCONNECT AND LOCK
OUT POWER BEFORE WORKING
ON OR AROUND FAN.