Installation
3A4586E
7
Electrical Connections (17N668 Motor)
Wire Connections at the Motor
NOTE: Graco recommends the use of a motor soft
starter or a VFD in the electrical circuit for all installa-
tions. In all cases, make sure all products are installed in
accordance with local codes and regulations.
1.
Remove 4 bolts to open the motor’s electrical box.
2.
Internal Wiring:
a.
For 460V Motors: The motor typically comes
wired for 460 V. If this is the voltage you want,
the existing wiring can remain as it is.
b.
For 230V Motors: Move the 7, 8, and 9 wires
as shown. Bridge W2, U2, and V2 as shown.
3.
Install wiring system with proper liquid-tight connec-
tions in one of the ports at the bottom of the motor
box.
4.
Connect the ground wire to the ground screw.
Torque the M5 stud to 17.7 in-lb (2.0 N-m).
5.
Connect power wires L1, L2 and L3 to line terminals
U1, V1, and W1.
6.
Torque terminals to 14.2 in-lb (1.6 N-m). Do not
overtorque.
7.
Close the motor electrical box. Torque the screws to
20 in-lb (2.3 N-m).
Wire Connections at the Variable
Frequency Drive (VFD)
NOTE: For variable speed control, the motor must be
wired to a VFD. Follow the instruction in the VFD manu-
facturer’s manual.
If you purchased an optional Graco VFD, install wiring at
the VFD as follows:
1.
Connect the wires to the motor. See Wire Connec-
tions at the Motor.
2.
Open the VFD’s electrical box.
3.
Install the wiring system with proper liquid-tight con-
nections for incoming supply power and for outgoing
motor power.
4.
Connect the ground wires for the VFD and for the
motor to the ground screw.
5.
Connect the wires from the motor terminals to the
matching terminals in the VFD box, as shown.
To avoid injury from fire, explosion, or electric shock,
all electrical wiring must be done by a qualified electri-
cian and comply with all local codes and regulations.
W2
U2
V2
4
7
5
8
6
9
2
3
1
U1
V1
W1
W2
U2
V2
1
7
2
8
3
9
5
6
4
U1
V1
W1
To avoid injury from fire, explosion, or electric shock, all
electrical wiring must be done by a qualified electrician
and comply with all local codes and regulations.
•
Disconnect power before servicing.
•
Wait 5 minutes for capacitor discharge before
opening.
