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5

Fan

Motor

Damper

Motor*

Second

Damper

Motor

Transformer**

Transformer**

L3
L2
L1

Motor

1
2

3

4

5

6

Together

High Speed

Line

L1

L2
L3

1
2

3

4

5

6

Open

Low Speed

Line

L1

L2
L3

Motor

4 5 6

1

7

2
8

3
9

L1 L2 L3

4 5 6

7 8 9

1 2

3

L1 L2 L3

Low Voltage

208/230 Volts

High Voltage

460 Volts

3 Phase, 9 Lead Motor
Y-Connection

7

1

6

7 8 9

4 5 6

1 2

3

Low Voltage

208/230 Volts

High Voltage

460 Volts

8

2

4

9

3

5

L1

L3

L2

L1

L3

L2

3 Phase, 9 Lead Motor
Delta-Connection

T-1

T-4

Ground B

L2

L1

Ground A

Line

Ground A

Ground B

T-1

T-4

Low Speed

High Speed

L 1

L 2

Line

Wiring Diagrams

Wiring Diagrams

When ground is required, attach to ground A or B with no. 6 thread forming 
screw. To reverse, interchange T-1 and T-4.

Single Speed, Single Phase Motor

To reverse, interchange any 2 line leads.

When ground required, attach to ground A or B with No. 6 thread forming 
screw. To reverse, interchange T-1 and T-4 leads.

2 Speed, 2 Winding, Single Phase Motor

2 Speed, 1 Winding, 3 Phase Motor

To reverse, interchange any 2 line leads. Motors require magnetic control.

Single Speed, Single Phase, Dual Voltage

2 Speed, 2 Winding, 3 Phase

When ground required, attach to ground A or B with No. 6 thread forming 
screw. To reverse, interchange T-5 and J-10 leads.

To reverse: High Speed-interchange leads T

11

 and T

12

.

Low Speed-interchange leads T

1

 and T

2

. Both Speeds-interchange any 2 

line leads.

Typical Damper Motor Schematic

For 3 phase, damper motor voltage should be the same between L

1

 and 

L

2

. For single phase application, disregard L

3

. *Damper motors may be 

available in 115, 230 and 460 volt models. The damper motor nameplate 
voltage should be verified prior to connection. ** A transformer may be pro-
vided in some installations to correct the damper motor voltage to the 
specified voltage.

Ground B

J-10

T-5

Ground A

Link A

Link B

Low Voltage

Line

L 2

L 1

Ground A

Link A & B

L1

L 2

Line

Ground B

T-5

J-10

Start Up

Turn the fan on. In variable speed units, set the fan to its 

lowest speed and inspect for the following:

• Direction of rotation. 
• Excessive vibration.
• Unusual noise. 
• Bearing noise.
• Improper belt alignment or tension (listen for

squealing).

• Improper motor amperage or voltage.

NOTICE! If a problem is discovered, immediately 

shut the fan off. Lock out all electrical power and check 
for the cause of the trouble. See Troubleshooting.

Operation

Pre-Start Checks

1. Lock out all the primary and secondary power 

sources.

2. Ensure fasteners and setscrews, particularly those 

used for mounting the fan, are tightened.

3. Inspect belt tension and pulley alignment. 
4. Inspect motor wiring.
5. Ensure belt touches only the pulleys.
6. Ensure fan and ductwork are clean and free of debris.
7. Inspect wheel-to-inlet clearance. The correct wheel-

to-inlet clearance is critical to proper fan performance.

8. Close and secure all access doors.
9. Restore power to the fan.

Содержание CA DWDI

Страница 1: ...mental documents prior to any installation or maintenance procedure Loren Cook Company s catalogs CA CF CP provide additional information describing the equipment fan performance available accessories...

Страница 2: ...extend at least 6 inches beyond the outline of the fan and its motor The weight of the foundation should be 2 to 3 times the weight of the unit and its motor Isolation NOTICE Although a certain amoun...

Страница 3: ...32 210 1 4 225 5 32 245 9 32 270 445 1 4 490 17 32 540 600 27 32 660 730 25 32 Duct Installation Efficient fan performance relies on the proper installation of inlet and discharge ducts Be sure your...

Страница 4: ...ameplate See page 5 for diagram Leave enough slack in the wiring to allow for motor movement when adjusting belt tension Some fractional motors have to be removed in order to make the connection with...

Страница 5: ...T1 and T2 Both Speeds interchange any 2 line leads Typical Damper Motor Schematic For 3 phase damper motor voltage should be the same between L1 and L2 For single phase application disregard L3 Dampe...

Страница 6: ...r Class II Normal Conditions Clean Dry Smooth 2 7 500 2 1 000 Extreme Conditions Dirty Wet Rough 2 1 500 2 200 Centrifugal Blower Class III Normal Conditions Clean Dry Smooth 2 3 000 2 500 Extreme Con...

Страница 7: ...local Loren Cook representative or your nearest authorized electric motor service representative Changing Shaft Speed belt drive All belt driven fans with motors up to and including 5 HP 184T max are...

Страница 8: ...lacement 1 Remove pulleys from their respective shafts 2 Clean the motor and fan shafts 3 Clean bores of pulleys and coat the bores with heavy oil 4 Remove grease rust or burrs from the pulleys and sh...

Страница 9: ...or oily belts Speed too high Incorrect direction of rotation Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly Bearings need lubrication or replacement Fan...

Страница 10: ...SI Arrangement 3 5 4 3 2 1 6 10 13 9 8 12 11 14 Drive Side View Discharge Side View Inlet Side View 7 Part No Arr 1 Arr 3 ARR 9 1 Motor Slide Base 2 Motor 3 Motor Sheave 4 Belt Set 5 Fan Sheave 6 Hous...

Страница 11: ...SI CF 4 SWSI Arr 4 1 Motor Slide Base 2 Motor 3 Motor Sheave 4 Belt Set 5 Fan Sheave 6 Housing 7 Isolation Base optional 8 Shaft 9 Drive Side Bearing 10 Free Side Bearing 11 Wheel 12 Inlet Cone 12 5 3...

Страница 12: ...F DW CA 4 DWDI 5 4 3 2 1 6 10 13 9 8 11 12 14 7 Drive Side View Free Side View Discharge Side View Part No CA DWDI CAF DW CA 4 DWDI 1 Motor Slide Base 2 Motor 3 Motor Sheave 4 Belt Set 5 Fan Sheave 6...

Страница 13: ...S A CPV Part No CPA CPA A CPS CPS A CPV w Optional Curb Cap and Inlet Box Accessory Parts List 1 CP Vent Set 2 Adjustable Draw Latch 3 Access Door Assembly 4 Latch Keeper 5 Curb Cap Plenum Box Assembl...

Страница 14: ...A CPV Arr 4 CPV EC 1 Motor 2 Housing 3 Wheel 4 Inlet Cone 5 Pedestal 6 Optional Weather Cover 7 Discharge Flange 8 Inlet Side Support CPV EC 5 4 2 3 7 1 6 Inlet Side View Discharge Side View 8 Drive...

Страница 15: ...15...

Страница 16: ...le Street Springfield Missouri 65803 4637 explaining in writing in detail your complaint and referring to the specific model and serial numbers of your fan Upon receipt by Loren Cook Company of your w...

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