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4.8 Wiring the Pump
The power wires on the pump are black with white
lettering to indicate L1, L2 and L3. WRITE DOWN the
colors that you splice to L1/ L2 / L3 so you can match
them with the L1/ L2 / L3 terminals in the pump control-
ler. If your pump cable has the standard GREY,
BROWN, BLACK and GREEN-YELLOW colors, use
this sequence:
GREY BROWN BLACK
YELLOW-
GREEN
L1 L2 L3 Ground
The power wires on the pump may also be brown-black-
grey for Motors delivered before Q2 2005. Then use
brown as L1, black as L2 and grey as L3.
No disconnect switches must be
installed in power wires between
motor pump controller. Connecting
the motor wire to the switched-on
controller might irreparably damage it. Such
damages are excluded from the warranty.
4.9 Wiring Order for Correct Rotation
Testing the pump for direction Helical rotor pumps
will produce water flow only if they are rotating in
the right direction. If you place it in a water tank or a
bucket, you will observe flow if the rotation is correct.
(Submerge at least 75 % to observe full flow).
Alternative, dry test If you do not have a water ves-
sel to test the pump in, you can test it dry by watching
the pump shaft and running it for only a few seconds.
The metal label on the pump has an arrow to indicate
the proper direction of rotation. If the pump is new from
the factory, it is lubricated so it can run dry for about
90 seconds without risk. If the pump is not new, it can
be run dry safely for about 15 seconds. Either way, this
is more than enough time to observe the direction of
the shaft.
If you did not write down the color match (or the wind
blew your note away) connect the three power wires
to the controller in ANY random order. Apply power.
Observe the pump shaft rotation, then turn the power
off. If the direction is wrong, exchange ANY TWO of the
power wires at the controller. In any case, when you are
finished connecting the pump to the controller, test it to
assure the proper direction.
Did you install the pump in the well without
checking the wiring order or the direction?
OR – Is it running but not pumping?
HELICAL ROTOR pump (model number does NOT
contain “C”) Turn the pump on. Observe if air is rising
from the pipe. If it isn’t, reverse any two motor wires
and observe again. If you cannot observe air rise, chose
whichever direction is quieter (less vibration). There is
risk of dry-run damage if it runs too long in reverse. If
the pump is new from the factory, it is lubricated so it
can run dry for about 90 seconds without risk. If the
pump has been used, it
WARNING If the pump wires are in
the wrong order, the motor will run
in reverse and the pump will not
function. Damage may result.
Check the direction BEFORE installing the pump.
The proper direction is COUNTERCLOCKWISE
when viewed from above.
CENTRIFUGAL pump (model with C in the name)
In reverse, it will produce no flow (or very little). This
will NOT damage the pump. If the flow is not normal,
reverse any two motor wires.
WARNING When testing for
direction, do not run the pump dry
for more than 15 seconds.
QUESTION The motor shaft
is hard to turn by hand, and
moves in a bumpy manner. Is
this normal? – ANSWER YES. This is
caused by permanent magnets in the motor.
It is especially hard to turn when it is
connected to the controller, or if the pump
wires are connected together.
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