4.8 Wiring Order for Correct Rotation
The power wires on the pump are black with white letter-
ing 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 controller. 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
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 vessel
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 sec-
onds 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 check-
ing 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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