23
5.8
Wiring Order for Correct Rotation
WARNING If the
pump wires are
in the wrong
order, the motor
will run in
reverse and the
pump will not
function. Dam-
age may result.
Check the
direction BE-
FORE installing
the pump. The
proper direction
is COUNTER-
CLOCKWISE
when viewed
from above.
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 controller.
If your pump cable has the standard RED,
BLACK and YELLOW colors, use this
sequence:
The power wires on the pump may also be
broun-black-grey for Motors delivered Q2
2005. Then use broun 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 don’t 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 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
WARNING When
testing for
direction, do not
run the pump
dry for more
than 15 seconds.
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 must not be run for more
than about 15 seconds. In many cases, a
pump that is reversed will turn off due to
overload.
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.
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.
D
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