Installation
Electrical
Electrical
Electrical Connections
Connections
Connections
All
All
All electrical
electrical
electrical wiring
wiring
wiring must
must
must be
be
be completed
completed
completed by
by
by a
a
a
qualified
qualified
qualified electrician
electrician
electrician and
and
and comply
comply
comply with
with
with all
all
all local
local
local codes
codes
codes
and
and
and regulations.
regulations.
regulations.
Use a motor soft starter or a VFD in the electrical
circuit for all installations (not supplied). VFDs can be
purchased through Graco. See recommended VFD
kits on page 36.
Wire
Wire
Wire Connections
Connections
Connections at
at
at the
the
the Motor
Motor
Motor
(Motor
(Motor
(Motor Code
Code
Code A)
A)
A)
NOTE:
NOTE:
NOTE: Follow
Follow
Follow the
the
the instructions
instructions
instructions in
in
in the
the
the motor
motor
motor
manufacturer’s
manufacturer’s
manufacturer’s manual.
manual.
manual. Use
Use
Use a
a
a motor
motor
motor starter
starter
starter with
with
with
overload
overload
overload protection.
protection.
protection. Wire
Wire
Wire size,
size,
size, fuse
fuse
fuse size,
size,
size, and
and
and other
other
other
electrical
electrical
electrical devices
devices
devices must
must
must comply
comply
comply with
with
with all
all
all local
local
local codes
codes
codes
and
and
and regulations.
regulations.
regulations.
The
The
The motor
motor
motor must
must
must be
be
be wired
wired
wired to
to
to the
the
the VFD.
VFD.
VFD. Install
Install
Install the
the
the
wiring
wiring
wiring at
at
at the
the
the motor
motor
motor as
as
as follows:
follows:
follows:
1.
1.
1.
Remove
Remove
Remove 4
4
4 bolts
bolts
bolts to
to
to open
open
open the
the
the motor’s
motor’s
motor’s electrical
electrical
electrical
box.
box.
box.
2.
2.
2.
Install
Install
Install a
a
a strain
strain
strain relief
relief
relief in
in
in one
one
one of
of
of the
the
the ports
ports
ports at
at
at the
the
the
bottom
bottom
bottom of
of
of the
the
the junction
junction
junction box.
box.
box.
3.
3.
3.
Connect
Connect
Connect the
the
the green
green
green ground
ground
ground wire
wire
wire to
to
to the
the
the ground
ground
ground
screw.
screw.
screw.
4.
4.
4.
For
For
For 230
230
230 V
V
V motors:
motors:
motors: Bridge
Bridge
Bridge as
as
as shown,
shown,
shown, then
then
then
connect
connect
connect L1
L1
L1 to
to
to T1,
T1,
T1, L2
L2
L2 to
to
to T2,
T2,
T2, and
and
and L3
L3
L3 to
to
to T3.
T3.
T3.
T4
T5
T6
L2
L3
L1
T7
T8
T9
T1
T2
T3
Figure
Figure
Figure 3
3
3 Wire
Wire
Wire Connections
Connections
Connections for
for
for a
a
a 230
230
230 V
V
V Motor
Motor
Motor
5.
5.
5.
For
For
For 460
460
460 V
V
V motors:
motors:
motors: Bridge
Bridge
Bridge as
as
as shown,
shown,
shown, then
then
then
connect
connect
connect L1
L1
L1 to
to
to T1,
T1,
T1, L2
L2
L2 to
to
to T2,
T2,
T2, and
and
and L3
L3
L3 to
to
to T3.
T3.
T3.
T4
T5
T6
L2
L3
L1
T7
T8
T9
T1
T2
T3
Figure
Figure
Figure 4
4
4 Wire
Wire
Wire Connections
Connections
Connections for
for
for a
a
a 460
460
460 V
V
V Motor
Motor
Motor
6.
6.
6.
Close
Close
Close the
the
the motor
motor
motor electrical
electrical
electrical box.
box.
box. Torque
Torque
Torque the
the
the bolts
bolts
bolts
to
to
to 20
20
20 in-lb
in-lb
in-lb (2.2
(2.2
(2.2 N•m).
N•m).
N•m).
Wire
Wire
Wire Connections
Connections
Connections at
at
at the
the
the Variable
Variable
Variable Frequency
Frequency
Frequency
Drive
Drive
Drive (VFD)
(VFD)
(VFD)
NOTE:
NOTE:
NOTE: Follow
Follow
Follow the
the
the instructions
instructions
instructions in
in
in the
the
the VFD
VFD
VFD
manufacturer’s
manufacturer’s
manufacturer’s manual.
manual.
manual.
Install
Install
Install the
the
the wiring
wiring
wiring at
at
at the
the
the VFD
VFD
VFD as
as
as follows:
follows:
follows:
1.
1.
1.
Connect
Connect
Connect the
the
the wires
wires
wires to
to
to the
the
the motor.
motor.
motor. See
See
See
Electrical
Electrical
Electrical Connections
Connections
Connections,,, page
page
page 15
15
15
...
2.
2.
2.
Open
Open
Open the
the
the VFD’s
VFD’s
VFD’s electrical
electrical
electrical box.
box.
box.
3.
3.
3.
Install
Install
Install strain
strain
strain reliefs
reliefs
reliefs in
in
in both
both
both ports
ports
ports at
at
at the
the
the bottom
bottom
bottom of
of
of
the
the
the VFD
VFD
VFD box.
box.
box.
4.
4.
4.
Connect
Connect
Connect the
the
the green
green
green ground
ground
ground wire
wire
wire to
to
to the
the
the ground
ground
ground
screw.
screw.
screw.
5.
5.
5.
Connect
Connect
Connect the
the
the wires
wires
wires from
from
from the
the
the motor
motor
motor terminals
terminals
terminals to
to
to the
the
the
matching
matching
matching terminals
terminals
terminals in
in
in the
the
the VFD
VFD
VFD box,
box,
box, as
as
as shown.
shown.
shown.
U
/T1
V
/T2
W
/T3
PE
PE
PES
PES
PES
PES
PES
PE
Figure
Figure
Figure 5
5
5 Wire
Wire
Wire Connections
Connections
Connections from
from
from the
the
the Motor
Motor
Motor to
to
to the
the
the VFD
VFD
VFD
3A7036E
15
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