8
MH Series Horizontal Multi-stage Pump
230V
115V
230V
115V
115 V
230 V
Figure 3
Dual Voltage Adjustment
NOTE:
To change the motor voltage (Figure 3) unplug the dual voltage connector on the motor
and reconnect it in the position required to match the available electrical system. The motor can
be set for 115 Volts or 230 Volts. Voltage setting of the motor can be determined by looking at the
alignment of the arrow on the plug and the arrow on the motor terminal board (located under the
motor’s end cover). Any questions as to which voltage setting is required for proper motor and
pump operation in your system should be directed to an electrical professional. The factory preset
is 230 Volts.
Check motor terminal cover or nameplate for wiring instructions. The
essential pump motor facts are as follows:
1. 3450 rpm;
2. Single-phase;
3. Dual voltage, 115/230;
4. 1/2, 3/4, 1, 1-1/2, and 2 horsepower motors are wired for 230 Volts as a factory standard.
Note that all wiring is subject to official inspection and must conform to the local electrical code.
Install a circuit breaker or fused disconnect switch near the pump. Connect the incoming power wires
to the LINE terminals and the green or bare wire to the ground screw, then ground the entire unit.
s
!
NOTICE
Thermal Protection
W
115/230 V
MH
HP
W
1
ɸ
W
3
ɸ
1/2
860
990
3/4
1140
1200
1
1360
1660
1.5
1740
2160
2
2200
2600
