MOTOR SPECIFICATIONS
Model
Voltage/
Number
HP
4MSW300MC2
3
4MSW300MC3
3
208-230/460/3
4MSW500MC2
5
4MSW500MC3
5
208-230/460/3
4MSWH750MC3
7.5
208-230/460/3
4MSWH1000MC3 10
208-230/460/3
4MSWH1200MC3 12
208-230/460/3
6MSW750MC3
7.5
208-230/460/3
6MSW1000MC3
10
208-230/460/3
6MSW1200MC3
12
208-230/460/3
A: Terminal Board, 460/60/3
Power Cable
L1
L2
2
L3
3
G
4
9
P1
P2
5
S
6
G
Control
Cable
Figure 1: 3-Phase Connections. Make sure that motor voltage matches supply voltage. Board is viewed from the top.
Use 3-pole contactor to prevent
start relay chatter at shutdown.
Connect as shown with
dotted line when not
using 3-pole contactor.
Start Capacitors
Start Relay
Run Capacitors
Figure 2: MSW4 Single Phase with Thermal overload and leak detection probe. Use a three-pole contactor to prevent
start relay chatter at shutdown. Connect as shown with dotted line when not using 3-pole contactor.
Single phase units that are not installed with Myers control panels require a capacitor/overload
package. Purchase the package through the Myers catalog.
Motor
Minimum
Max. Load
Circuit
Phase
Amps
Req.(Amp)
230/1
20.0
14.0/6.3
20/10
230/1
27.0
19.4/8.3
30/15
33.2/15.0
50/20
37.6/17.0
50/30
40.0/18.5
50/30
30.0/14.0
50/20
35.4/16.0
50/20
40.0/18.0
50/30
B: Terminal Board, 230/60/3
T3
Power Cable
T2
L1
T1
L2
L3
T6
1
G
T9
8
T5
P1
T8
7
P2
T4
T7
S
G
S
P2
Control
Cable
P1
L1
L2
CONTROL
BOX
Black
(Common)
White (Main)
Red (Start)
2 1
Black
5
White
Red
PERFORMANCE CHART
Model
Number
25
4MSW300MC2
4MSW300MC3
4MSW500MC2
4MSW500MC3
4MSWH750MC3
4MSWH1000MC3
4MSWH1200MC3
6MSW750MC3
6MSW1000MC3
6MSW1200MC3
2
3
1
4
8
9
5
7
6
Power Cable
(14-4)
Ground
(Green)
Ground
(Green)
Control Cable
(16-4)
2
GPM at Total Feet
10
30
50
70
Capacity Gallons/Minute
500
225
25
–
500
225
25
–
700
500
200
–
700
500
200
–
575
425
250
100
675
525
350
175
725
575
425
275
875
525
200
–
975
650
375
50
1,075
775
475
175
C: Motor Connections
T3
T1
T9
T4
T2
T8
T8
T7
T1
T9
T7
T6
T9
T6
T4
T3
T3
T5
T5
T6
T6
P1
Thermal Protector
S
P2
P2
S
Leak Detector
P1
T1
T4
T5
T8
PUMP
P1
P2
Thermal Overload
Protector
Leak Detector
2003 0895
No Flow at
Height Shown
Below Ft.
52
52
67
67
80
90
104
80
90
104
T1
T4
T7
T8
T5
T2
N
C
N
O
2002 0895
Main
Winding
Start
Winding