CHIEF Caldwell F12-751 User manual

P.O. Box 848
Kearney, NE 68848 USA
Phone [phone]
Fax [phone]
Part Number 740548
Bulletin 441G
Effective 1/2/2006
OWNERS MANUAL
INSTALLATION AND OPERATION
INSTRUCTIONS FOR
AXIAL FLOW FANS
This manual is for installation, operation, and maintenance of all Caldwell axial fans with serial numbers
06A__________ and up.
WARNING! Read this manual thoroughly before installing or operating fan. Keep this
manual in a location for quick access and reference.

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TABLE OF CONTENTS
LIST OF FIGURES 4
LIST OF TABLES 5
INTRODUCTION 6
SAFETY 7
SERVICE NOTICE 10
PACKING LIST 11
MODEL SPECIFICATIONS 12-13
MOUNTING PAD 12
AXIAL SPECIFICATIONS 13
INSTALLATION INSTRUCTIONS 14-19
FOUNDATION 14
INSTALLATION 14
ELECTRICAL INSTALLATION 15
LEVELING 17
ACCESSORIES 17
INSTALLATION CHECK 17
AXIAL DIMENSIONS 18
ELECTRICAL SERVICE 19
OPERATING INSTRUCTIONS 20-21
PRELIMINARY 20
STARTING FAN 21
MAINTENANCE 22
FAN OPERATION OFF SEASON 22
FAN CONTROL 22
FAN LUBRICATION 22
BLADE CLEANING 22
WIRING DIAGRAM 23-28
AF12-751 23
AF18-11 24
SINGLE PHASE 230 VOLT 25
THREE PHASE 230 VOLT 26
THREE PHASE 460 VOLT 27
THREE PHASE 575 VOLT 28
FAN SERVICE 29-33
GENERAL INFORMATION 29
CONVERTING DUAL VOLTAGE FANS 29-30
TROUBLE SHOOTING 31
FAN REPLACEMENT PARTS 34-36
FAN PARTS 34-35
MOTORS 36
CONTROL PARTS 35
WARRANTY/SERVICE POLICY 37
NOTES 38

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LIST OF FIGURES
Figure 1. Warning Label Locations 7
Figure 2. Danger High Voltage 8
Figure 3. Warning Rotating Blade 8
Figure 4. Warning to Prevent Roof Damage 9
Figure 5. Serial Number Plate 10
Figure 6. Fan Mounting Pad Location for Drying Transition 12
Figure 7. Fan Mounting Pad Location for Wall Adaptor with Angle Flange 12
Figure 8. Screen Guard Location 14
Figure 9. Field Power Installation Single Phase 16
Figure 10. Field Power Installation Three Phase 16
Figure 11. Motor Connection for Single Phase 17
Figure 12. Correcting Fan Rotation Three Phase 17
Figure 13. End and Side View of Axial Fan 18
Figure 14. Toggle Switch 21
Figure 15. Push Button Switch 21
Figure 16. Wiring Schematic for AF12-751 23
Figure 17. Wiring Schematic for AF18-11 Fan 24
Figure 18. Wiring Schematic for 230 Volt Single Phase Axial Fan 25
Figure 19. Wiring Schematic for 230 Volt Three Phase Axial Fan 26
Figure 20. Wiring Schematic for 460 Volt Three Phase Axial Fan 27
Figure 21. Wiring Schematic for 575 Volt Three Phase Axial Fan 28
Figure 22. Conversion 230/460 Volt 29
Figure 23. Conversion 460/230 Volt 30
Figure 24. Axial Fan Parts Disassembled 34
Figure 25. Control Enclosure Disassembled 36

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LIST OF TABLES
Table 1. Fan Pad Distance from Bin Wall for use with Caldwell Drying Transition 12
Table 2. Fan Pad Distance from Building for use with Caldwell Wall Adaptor 12
Table 3. Fan Model Specifications for Tube Axial Aeration & Drying Fans 13
Table 4. Axial Fan Housing Dimensions 18
Table 5. Electrical Service for Single Phase Operation 230 Volt 19
Table 6. Electrical Service for Three Phase Operation 230/460 Volt 19
Table 7. Electrical Service for Three Phase Operation 575 Volt 19
Table 8. Normal Time for Switchless Motor to Reach Full Speed for 230 Volt 20
Table 9. Housing, Screen Guard, Control Enclosure Replacement Parts 34
Table 10. Motor, Blade Replacement Parts 35
Table 11. Contactor or Holding Coil for Converting from 460Volt to 230Volt 35
Table 12. Control Enclosure Parts (Furnas/Siemens Parts) 36

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TO OUR VALUED CUSTOMER
The Chief Industries product you have recently purchased has been engineered and manufactured to
the highest possible standards. This unit has been assembled by caring and trustworthy individuals
who live in the plains of Nebraska and have your best interests in mind. Each Caldwell assembled
product has been 100% quality control inspected plus field simulated stress tested to assure
optimum dependability for you and your operation.
Before using your fan, it is your responsibility to read, understand and
follow all of the safety instructions in your operator's manual. Also
make sure that EVERYONE operating or near your fan understands and
follows all of the safety instructions in the manual.
Remember, a safety-minded, informed operator is the most important
safety aspect of your fan. Accidents can be avoided. Do not risk
injury or death -- be certain that every operator of your fan is well
acquainted with all the safety recommendations and operating
instructions in the manual. The table below will aid you in making sure
all employees or family members know the proper operation of your Chief Industries product. After
completely reading the manual, the table should be filled in.
DATE OPERATOR SIGNATURE OWNER SIGNATURE

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Fi
g
ure 1 . Warnin
g
Label Locations
Safety Notice - Important - Read This!
Safety Alert Symbol
This symbol means ATTENTION! BE ALERT! YOUR SAFETY IS AT STAKE!
The Safety Alert Symbol identifies
important safety messages in this document
and on your fan. Make yourself familiar
with the messages identified for you with
the Safety Alert Symbol. When you see this symbol, be alert to
the possibility of serious injury or death. Follow the safety
instructions given in this manual and on your fan.
Signal Words
Danger:Indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
injury.
Warning: Indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury and property damage.
Caution:Indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
Fan Information:
A.) The unit utilizes electricity as the source of energy. When the power is installed
properly, and protective covers are in place, the unit poses no direct hazard.
WHEN INSTALLING OR SERVICING THE ELECTRICAL COMPONENTS, ALWAYS
SHUT THE POWER OFF AT THE FAN DISCONNECT, AND LOCK THE FAN
DISCONNECT IN THE OFF POSITION, SO NO POWER CAN BE DELIVERED TO THE
FAN WHILE YOU ARE SERVICING THE UNIT.
IN PERFORMING ELECTRICAL CHECKS WITH THE POWER ON, USE A VOLTMETER
AND BE CAREFUL NOT TO CONTACT LIVE PARTS.
B.) The unit, when operating, has a fan blade turning at high speed, and when guarded
with the screen guard, poses no direct hazard.
MAKE SURE THE SCREEN GUARD IS SECURELY FASTENED IN PLACE.
WHEN SERVICING THE FAN BLADE, MAKE SURE THE ELECTRICAL POWER IS
SHUT OFF AT THE FAN DISCONNECT, AND LOCK THE FAN DISCONNECT IN THE
OFF POSITION.

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Safety Decals
READ AND BE CERTAIN THAT YOU FULLY UNDERSTAND THE MEANING OF ALL SAFETY DECALS
BEFORE OPERATING YOUR FAN.
Keep safety decals clean and readable at all times. Replace any safety decals that become unreadable or are
missing. If a part with an attached safety decal is replaced, make sure the proper safety decal is attached in
the proper location on the replacement part. You may obtain new decals from your local dealer.
The following are representative of the safety decals on your Axial fans:
I.) Danger High Voltage:
II.) Warning Rotating
Fan Blade:
Figure 2. Danger High Voltage
Figure 3. Warning Rotating Blade

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Figure 4. Warning To Prevent Roof Damage.
III.) Warning Roof and Wall Damage of Structure:
Read and follow the safety instructions before starting your Axial fan:

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CALDWELL AXIAL FAN
INSTALLATION AND OPERATION MANUAL
THIS MANUAL IS FOR THE INSTALLATION OPERATION AND MAINTENANCE OF ALL AXIAL
FANS WITH SERIAL NUMBER 06A_____ AND UP. READ MANUAL THOROUGHLY BEFORE
INSTALLING OR OPERATING THE FANS. KEEP THIS MANUAL IN A LOCATION FOR QUICK
ACCESS AND REFERENCE.
SPECIAL SERVICE NOTICE
If you are unable to remedy any service problem after thoroughly studying this manual, contact the
dealer from whom you purchased the unit. YOUR DEALER IS YOUR FIRST LINE OF SERVICE. GIVE
THEM THE INFORMATION REQUESTED BELOW AND EXPLAIN YOUR PROBLEM. If they are unable to
remedy the problem, refer to the factory. When calling the factory for service, ask for the Customer
Service Department. Give the information requested below and explain your problem. If adequate
information relating to the problem is given, the Customer Service Department should be able to
pin-point the problem and suggest an immediate remedy. THE CHIEF AGRI/INDUSTRIAL DIVISION
SERVICE POLICY IS INCLUDED AT THE END OF THIS MANUAL.
1.)*Fan Model Number __________________________
2.)*Fan Serial Number __________________________
3.)Size of Bin Diameter __________________________
4.)Type of Grain __________________________
5.)Grain Depth __________________________
6.)Line Voltage (Measured)__________________________
7.)*Dealer Purchased From__________________________
8.)*Date Purchased __________________________
* fill in these items at date of purchase
THE ABOVE INFORMATION MUST BE AVAILABLE BEFORE
CONTACTING THE DEALER OR FACTORY FOR SERVICE.
Figure 5. Serial Number Plate.