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Internal Basin Connections:
Step 1: Attach float switches to the float bracket by
clamping strain relief bushings around the float cords,
then inserting the bushings into the float bracket slots.
Step 2: After grinder pump attachments have been
made, lower the pump unit down the rails and ensure
ball check valve aligns and connects properly with base
elbow in basin bottom.
Junction Box Systems:
Step 1: Ensure power source is off or disconnected
and push pump power, seal failure/heat sensor, and float
cords through cord grips in the junction box and tighten.
To prevent corrosion or electrical short, plug any
unused holes.
Step 2: Remove junction box cover and make all
connections inside junction box to all incoming control
panel wires. It is required that the customer furnish and
install a conduit seal outside the basin to prevent surface
water from entering the junction box.
NOTE: Failure to use a Pentair approved control
panel voids warranty.
IMPORTANT: Properly connect the panel
ground wire to a grounding rod. Improper
grounding voids warranty.
Panel Wiring:
Step 1: Ensure power source is off or disconnected and
connect pump power, seal failure/heat sensor, and float
cords to panel terminals per the schematic provided. All
conduits and cables entering the panel must be sealed
off.
For single-phase pumps: Check panel wiring to ensure
white, black, and red pump leads are connected
according to the schematic and panel wire labels. Single
phase pumps will run only if connected one way.
Three-phase pumps: Interchange any two line leads
to the motor inside the panel if the pump rotates in the
wrong direction.
Electrical Connections:
MG Series – 230V, 1 Phase
Green
Ground
White
Main Power Line
Black
Common Power Line
V 2 and WGL Series
1 Phase
Green
Ground
Red
Start Power Line
White
Main Power Line
Black
Common Power Line
Orange
Seal Failure
WG/WGX Series
Power Cord
Control Cord
Preoperational Grinder Pump Checks:
Step 1: Ensure power source is off or disconnected and
remove pump from basin.
Step 2: With power off, turn radial cutter with a
screwdriver to be sure it rotates freely.
Step 3: Stand clear from pump and with power on,
check for proper rotation of pump by turning "H-O-A"
switch to "HAND" momentarily and then "OFF". The
impeller should turn counterclockwise when viewed from
the suction end.
PUMP OPERATIONS
Step 1: Run clear water into the basin until motor
housing is covered.
Step 2: Open the shut-off valve to the discharge line.
Step 3: Turn "H-O-A" switch to the "OFF" position and
turn on main breaker.
Step 4: Start the pump by turning the "H-O-A" switch to
the "HAND" position.
Step 5: Check the pump amperage with clamp on
ampmeter on black pump lead. Readings higher
than nameplate indicate clogged pump, miswiring, or
improper voltage. If basin is not being pumped down
and amperage readings are considerably lower than
nameplate, the pump may be air locked.
NOTE: Nameplate amperage is rated at the largest
impeller diameter trim. Pumps with cut diameter
impellers will draw slightly less amps than nameplate.
If pump is air locked, refer to the troubleshooting
section in this manual.
Step 6: Float adjustment for simplex systems: Adjust
floats so that the water level is above the pump motor
housing, and the pump shuts off when the water level is
3 Phase
Ground
2 inches above the pump volute discharge.
Power Line
Power Line
Float adjustment for duplex systems: Adjust floats so
Power Line
that a pump will start when the water level is just above
Seal Failure
the pump motor housing, and pump on override water
level is 5 inches above the pump motor housing. Adjust
pump shut-off so that water level is within 2 inches
4
1 Phase
Green
Ground
Red
Start Power Line
White
Main Power Line
Black
Common Power Line
Orange
Seal Failure
Red
Seal Failure
Black
Heat Sensor
White
Heat Sensor
Green
Ground
3 Phase
Ground
Power Line
Power Line
Power Line
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