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To Re-wire the pump from 230V to
460V 3 phase: Only a 230V pump from
the factory is considered dual voltage,
a cord label clearly states the factory
wound voltage.
Remove bolts securing cord assembly
then raise the cord cap assembly
enough to slip a prying instrument on
opposite sides between the cord cap
casting and the junction box. Take
care to not damage the o-ring or the
machined surfaces of the castings.
Doing so could void FM agency
certifications. While prying evenly
on both sides; separate the cord cap
casting from the motor housing, the
assembly is airtight and will have a
vacuum effect when disassembling.
Once separated, the cord cap can be
inverted and rotated to the outside of
the pump assembly, and a bolt can be
re-used to secure the upside down
cord cap to the motor housing for ease
of rewiring.
Refer to the wiring diagram within
this manual for wiring details. Once
all electrical connections are finished
and secure (a crimped electrical
connector is best to prevent issues
due to vibration if required), the cord
cap should be re-attached reversing
the steps above. Ensure the o-ring is
in place and perform a hi-pot test for
safety once ever thing is complete.
Pump:
The fluid end of the pump is field
serviceable and can be disassembled
in case of wear, damage, plugging or
outboard seal failure.
Pump
Troubleshooting
Checking For Moisture in Motor
Use ohmmeter or a megger and set
on highest scale. Readings on the
large power cord between any of
the conductors red, black, or white
to green conductor or to the motor
housing should be greater than
1,000,000 ohms (1 megohm). Service
work should be done only
at an authorized service station.
4
Readings should be taken with
line leads disconnected from the
control panel.
Resistance of Windings
Every motor winding has a fixed
resistance and winding must check
close to specification values.
Verification of the proper wiring of
a dual voltage motor can also be
checked by measuring the motor
winding resistance.
Trouble Checklist
Troubles listed are generally caused
by the pump. Other trouble can occur
from faulty control box operation.
Pump runs but does not pump liquid
from basin.
1. Pump impeller may be air locked;
this occasionally occurs on a new
installation. Start and stop pump
several times to purge air.
2. Run additional water into basin
so that pump will be submerged
deeper to clear air.
3. If pump is three phase, rotation
may be wrong. See instructions
for checking proper rotation.
4. If air does not clear it may be
necessary to lift pump out of
sealing elbow and start motor
to allow pump to pump for a
few seconds.
Air vent hole is provided in pump
case, so some water will flow from
this hole when pump is operating.
If vent hole gets clogged, clean
out.
5. If pump has been installed for
some time and does not pump, it
may be clogged at grinder inlet.
6. Discharge gate valve may
be closed.
7. Discharge check valve may be
clogged or have a broken clapper.
8. Discharge head may be too high.
Check elevation.
9. If above checks do not locate
trouble, motor rotor may be loose
on shaft which allows motor to run
but will not turn impeller or only at
low RPM.
Red light comes on at control box.
1. This indicates some water has
leaked past the lower seal and
has entered the seal chamber
and made contact with the
electrode probe. Pump must be
removed immediately from basin
for replacement of lower seal.
This preventive repair will save an
expensive motor.
Overload trips at control box and
alarm buzzer or flashing red light
comes on due to high water level
in basin.
1. Push in on red reset button to
reset overload. If overload trips
again after short run, pump
has some damage and must be
removed from basin for checking.
2. Trouble may be from clogged
grinder causing motor to overload
or could be from failed motor.
3. Trouble may be from faulty
component in control box.
Always check control box before
removing pump.
Yellow run light stays on
continuously.
1. Indicates H-O-A switch may be in
the Hand position.
2. Level control switch may have
failed causing pump to continue
to operate when water is below
lower weight, or lower weight may
have dropped off.
3. Grinder assembly may be partially
clogged causing pump to operate
at very reduced capacity.
4. Gate valve or check valve may be
clogged causing low pump flow.
5. Pump may be air logged.
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