COOK DBX Manual de instalação, operação e manutenção - Página 2

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COOK DBX Manual de instalação, operação e manutenção
Installation

Motor Installation

To prevent damage to the fan during shipping, motors
5HP and larger, and extremely heavy motors (cast iron or
severe duty) are shipped loose and must be field mounted
by bolting the motor on the motor mounting plate in the ex-
isting mounting slots.

Wiring Installation

NOTICE! 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 fractional
motors have to be removed in order to make the connec-
tion with the terminal box at the end of the motor.
NOTICE! Follow the wiring diagram in the discon-
nect switch and the wiring diagram provided 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).

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
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
L 1
Link A
T-5
Link B
Line
J-10
Low Voltage
L 2
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.
DB IO&M
Ground A
L 1
Line
L 2
High Speed
L 1
Line
L 2
Low Speed
Ground A
L 1
Link A
and B
T-5
J-10
L 2
Ground B
3 Phase, 9 Lead Motor
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.
2 Speed, 1 Winding, 3 Phase Motor
High Speed
1
2
3
Motor
4
5
6
To reverse, interchange any two line leads. Motors require mag-
netic control.
2 Speed, 2 Winding, 3 Phase
T
T
T
Motor
T
T
T
To reverse:
High Speed - interchange leads T
Low Speed - interchange leads T
Both Speeds - interchange any two line leads.
Typical Damper Motor Schematic
Fan
Motor
Transformer**
For 3-Phase, damper motor voltage should be the same be-
tween L
and L
. For single phase application, disregard L
1
2
*Damper motors may be available in 115, 230 and 460 volt mod-
els. The damper motor nameplate voltage should be verified pri-
or to connection.
Line
**A transformer may be provided in some installations to correct
the damper motor voltage to the specified voltage.
2
3 Phase, 9 Lead Motor
Delta-Connection
High Voltage
Low Voltage
460 Volts
208/230 Volts
4 5 6
8
7
6
4
7 8 9
2
1
3
1 2
L 1
L 2
L 3
L 1 L 2 L 3
Low Speed
Together
Motor
L 1
L 2
Line
L 3
Low Speed
3
Low Speed
2
Low Speed
1
High Speed
11
High Speed
12
High Speed
13
and T
.
11
12
and T
.
1
2
Transformer**
Second
Damper
Damper
Motor*
Motor
High Voltage
460 Volts
9
7 8 9
5
3
4 5 6
3
1 2
L 1
L 2
L 3
L 1
1
L 2
2
Line
3
L 3
4
Open
5
6
L
1
L
Line
2
L
3
L3
L2
L1
.
3
B51131-002