COOK CFS - Manual (Page 3)

3
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
Wiring Diagrams
Fan
Motor
Damper
Motor*
Second
Damper
Motor
Transformer** Transformer**
L3
L2
L1
Lock off all power sources before unit is wired to
power source.
Leave enough slack in the wiring to allow for motor
movement when adjusting belt tension. Some frac-
tional motors have to be removed in order to make
the connection with the terminal box at the end of the
motor. To remove motor, remove bolts securing
motor base to power assembly. Do not remove motor
mounting bolts.
Follow the wiring diagram in the discon-
nect switch and the wiring diagram pro-
vided with the motor. Correctly label the
circuit on the main power box and always
identify a closed switch to promote safety
(i.e., red tape over a closed switch).
Wheel Rotation
Test the fan to ensure the rotation of the wheel is the
same as indicated by the arrow marked Rotation.
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
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 or 460 volt models. The damper motor nameplate voltage should be verified
prior to connection. ** A transformer may be provided in some installations to cor-
rect the damper motor voltage to the specified voltage.
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
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
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
Airfoil
Proper Wheel Rotation