COOK VCRD Manual de instalação, operação e manutenção - Página 3

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Wiring Diagrams

Single Speed, Single Phase Motor
T-1
T-4
Ground B
When ground is required, attach to ground A or B with no. 6 thread forming
screw. To reverse, interchange T-1 and T-4.
2 Speed, 2 Winding, Single Phase Motor
T-1
T-4
Ground B
When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-1 and T-4 leads.
Single Speed, Single Phase, Dual Voltage
Ground A
Link A
T-5
Link B
J-10
Low Voltage
Ground B
When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-5 and J-10 leads.

Operation

Pre-Start Checks
a. Lock out all the primary and secondary power sources.
b. Inspect and tighten fasteners and setscrews, particu-
larly fan mounting and bearing fasteners. Refer to
Torque chart.
c. Inspect belt tension and pulley alignment. Refer to Belt
and Pulley Installation, page 5.
d. Inspect motor wiring. Refer to Wiring Installation, page
2.
e. Ensure belt touches only the pulleys.
f. Rotate the wheel to ensure it rotates freely.
g. Ensure fan and ductwork are clean and free of debris.
h. Close and secure all access doors.
i. Restore power to fan.
Start Up
Turn the fan on. In variable speed units, set the fan to its
lowest speed. 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
If a problem is discovered, immediately shut the fan
off. Lock out all electrical power and check for the
cause of the trouble. Refer to Troubleshooting, page 6.
Ground A
L
1
Line
L
2
Ground A
High Speed
L
1
Line
L
2
Low Speed
Ground A
L
1
Link A & B
T-5
Line
J-10
High Voltage
L
2
Ground B
Wiring Diagrams
3 Phase, 9 Lead Motor
Y-Connection
Low Voltage
208/230 Volts
4 5 6
1
2
3
7
8
9
L 1 L 2 L 3
To reverse, interchange any 2 line leads.
2 Speed, 1 Winding, 3 Phase Motor
High Speed
1
2
3
Motor
4
5
6
To reverse, interchange any 2 line leads. Motors require magnetic control.
2 Speed, 2 Winding, 3 Phase
L
1
Motor
Line
L
2
To reverse: High Speed-interchange leads T
Low Speed-interchange leads T
line leads.
VCRD with Shade Pole or PSC Motors
White
Black
VCRD with 2-Speed PSC Motors
White
Black (High)
Red (Low)
NOTE: Insulate Unused Lead
FSC - 115 VOLT 10 AMP
VCR
FAN*
VCR
FAN*
*See VCR Wiring Diagram for correct lead.
†
Locate away from heat.
3
3 Phase, 9 Lead Motor
Delta-Connection
High Voltage
Low Voltage
460 Volts
208/230 Volts
4 5 6
8
9
7
4
5
6
7 8 9
2
3
1
3
1 2
L 1
L 2
L 3
L 1 L 2 L 3
Low Speed
Together
Motor
L
1
L
Line
2
L
3
T
Low Speed
3
Low Speed
T
2
Low Speed
T
1
T
High Speed
11
T
High Speed
12
T
High Speed
13
and T
11
and T
. Both Speeds-interchange any 2
1
2
*
*
WHITE
FSC
BLACK
High Voltage
460 Volts
7 8 9
4 5 6
1 2
3
L 1
L 2
L 3
L
1
1
L
2
Line
2
3
L
3
4
Open
5
6
L
1
L
2
Line
L
3
.
12
Line
Line
Line
Line