Wiring Connections - MYERS 7MPB Serie Manual Del Usuario

MOTOR SWITCH SETTINGS
Dual-voltage motors without cords(motors that can
operate at either 115 or 230 volts), are set at the
factory to 230 volts. Do not change motor voltage
setting if line voltage is 230 volts, or if you have a
single voltage motor.
NOTE: Never wire a 115 volt motor to a 230 volt line.
Remove Motor End Cover
If you have a dual-voltage motor, and will connect it to
115 volts, follow the procedure below.
You will need to remove the motor end cover to
change the voltage setting.
End Cover Screws
Motor
End Cover
Figure 5 – Removing end cover.
Your motor terminal board (located under the motor
end cover) should look like the one below.
Dial Type Voltage Selector
To change to 115 volts:
1. Make sure power is off.
2. Turn the dial counter-clockwise until 115 shows in
the dial window.
Ground
Screw
Voltage
Change Dial
Figure 6 – Voltage adjustment dial.
3. Attach the power lead wires to the power lead
terminals. Make sure the wires are secure.
4. Attach the ground wire to the green ground screw
5. Reinstall the Motor end cover
Go to Wiring Connections below.
ELECTRICAL
electrical connections.
cause fire or serious damage to motor and voids
warranty. If in doubt consult a licensed electrician.
branch circuit with no other appliances on it.
diagrams above, follow nameplate diagram.

WIRING CONNECTIONS

1. Install, ground, wire and maintain this pump in
compliance with the National Electrical Code (NEC)
or the Canadian Electrical Code (CEC) and with all
local codes and ordinances that apply. Consult your
local building inspector for local information.
2. Make sure that the voltage, frequency and phase
(single phase or three phase) of the power supply
agree with that stamped on the motor nameplate. If
in doubt, check with the power company.
3. Some models are equipped with three phase
motors. Three phase motors require magnetic
starters and can run in either direction, depending
on how they are connected to the power supply.
NOTICE: Dual voltage motors without cords are factory
wired for 230 volts. If necessary, reconnect the motor
for 115 volts, as shown. All cord connected motors are
wired for 115 volts. Do not alter the wiring in single
voltage motors.
Power Lead
Terminals
5
Ground motor before connecting to electrical
power supply.
Failure to ground motor can cause severe or
fatal electrical shock hazard.
Explosion hazard. Do not ground to a gas
supply line.
To avoid dangerous or fatal electrical shock,
turn OFF power to motor before working on
Supply voltage must be within ±10% of
nameplate voltage. Incorrect voltage can
Use wire size specified in Wiring Chart (Table II,
Page 7). If possible, connect pump to a separate
Wire motor according to diagram on motor
nameplate. If nameplate diagram differs from