Wiring Diagrams - COOK LO-PRO Installation, Operation And Maintenance Manual

Wiring Diagrams

Single Speed, Single Phase Motor
Ground A
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
Ground A
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 leads.
Single Speed, Single Phase, Dual Voltage
Ground A
Link A
T-5
Link B
J-10
Low Voltage
Ground B
When ground is required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-5 and J-10 leads.
LO-PRO IO&M
L 1
Line
L 2
High Speed
Low Speed
Ground A
L 1
Link A & B
T-5
Line
J-10
L 2
Ground B
Typical Damper Motor Schematic
Fan
Motor
Transformer**
For 3 Phase, damper motor voltage should be the same between L
For single phase application, disregard L
able in 115, 230 and 460 volt models. The damper motor nameplate voltage
should be verified prior to connection. **A transformer may be provided in
some installations to correct the damper motor voltage to the specified volt-
age.
L 1
Line
3 Phase, 9 Lead Motor
L 2
3 Phase, 9 Lead Motor
Y-Connection
Low Voltage
208/230 Volts
4 5 6
1 2 3
9
7 8
L 1 L 2 L 3
To reverse, interchange any two line leads.
L 1
2 Speed, 1 Winding, 3 Phase Motor
Line
L 2
To reverse, interchange any two line leads. Motors require magnetic
control.
2 Speed, 2 Winding, 3 Phase
Motor
To reverse: High Speed-interchange leads T
change leads T
6
Second
Damper
Damper
Motor*
Motor
High Voltage
460 Volts
4 5 6
7 8 9
1 2 3
L 1 L 2 L 3
High Speed
1
Together
2
3
Motor
L 1
4
L 2
5 Line
6 L 3
Low Speed
T
3
Low Speed
T
2
Low Speed
T
1
High Speed
T
11
High Speed
T1
2
High Speed
T
13
and T . Both Speeds-interchange any two line leads.
1 2
L3
L2
L1
Transformer**
and L
1
. *Damper motors may be avail-
3
3 Phase, 9 Lead Motor
Delta-Connection
Low Voltage High Voltage
208/230 Volts 460 Volts
8 9
7 7 8 9
5
6 4
1 2 3
4 5 6
1 2 3
L 1 L 2 L 3
L 1 L 2 L 3
Low Speed
L 1
1
L 2
2 Line
3
L 3
Motor
4
Open
5
6
L
1
L
Line
3
L
3
and T . Low Speed-inter-
11 12
B51021-004
.
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