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C-2120A
Farm Fans C-2120A User Manual
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C21A-02-2
OPERATOR’S MANUAL
C-2
1
20A, C-2
1
25A,
C-2
1
30A, and C-2
1
40A
Model Grain Dryers
1997 & LA
TER MODELS
Division of ffi Corporation
5900 Elmwood
Ave. • Indianapolis, IN 46203
© 1998 ffi Corporation Printed in USA
2
Table of Contents
Table of Contents
3
Operating Precautions
4
Section 1: SPECIFICATIONS
5
Dimensions
5
General Specifications
6
Auger Drive Data
7
SCR Drive Information
7
Transporting Dryer
9
Installation
9
Fuel Connection
10
Fuel Specs
11
Electrical Power Supply
11
Electrical Load, Overload Relays, and Circuit Breakers
12
Section 3: OPERATING CONTROLS
13
Miscellaneous Components
13
Control Start/Stop
13
Fan Switches
13
Main/Safety Gas Shutoff Valve
13
Burner Switches
13
Plenum Temperature Control
13
Hi lo Pressure Control
13
Load Auger Switch
14
Load Timer
14
Unload Auger Switch
14
Dryer Operator Light
14
Hour Meter
14
Discharge Safety Shutoff Switch
14
Hinged Fast Trip Cleanout
15
Meter Roll Controls
15
Meter Roll Selector Switch
15
Manual Unload Control Dial
15
% Unload Rate (Meter Roll) Volt Meter
15
Vari-Trol Moisture Control
15
Meter Roll Monitor System
16
Shutdown Features
17
Shutdown Indicators
17
Restarting Dryer after a Shutdown
17
Section 4: TEST FIRING
19
Section 5: DRYER OPERATION
23
Drying Temperatures
23
Full Heat Drying
23
Final Moisture Content
23
Dryer Shutdown
23
Operating Instructions
24
Startup Procedure
25
Drying Tables
26
Section 6: DRYER ILLUSTRATIONS
35
Section 7: SERVICE
42
Seasonal Inspection and Service
45
Propane Vaporizer Seasonal Inspection
46
Vaporizer Adjustment
46
Burner Control Sequence of Operation
47
Fan Propeller Removal and Installation
47
Fan Motor Removal and Installation
49
Heater Removal and Installation
50
Grain and Plenum Temperature Sensor Locations
51
SCR Drive and Meter Roll Information
51
Meter Roll Blockage
51
To Clear Jam from Meter Roll
52
SCR Motor Control
52
Adjusting SCR Motor Speed
52
Section 8: WIRING DIAGRAMS
53
Section 9: TROUBLESHOOTING
61
General Troubleshooting
61
Improper Electronic Temperature Control
65
Operation
65
Improper Moisture Control Operation
65
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Farm Fans C-2120A Specifications
General
Type
Grain Dryer
Model
C-2120A
Brand
Farm Fans
Power Source
Electric
Fuel Type
Propane/Natural Gas
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