CAUTION:
•
Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves
while handling these parts.
6.5.2 Change the rotation
CAUTION:
Risk of motor running hot. Make sure that the motor fan is bidirectional. If it is not bidirectional,
then turn it around or replace it.
These centrifugal pumps can be operated clockwise or counterclockwise when viewed from the coupling
end of the pump.
1
3
2
1.
Discharge
2.
Clockwise rotation
3.
Suction
Figure 27: Clockwise rotation viewed from the coupling end
1
3
2
1.
Suction
2.
Counterclockwise rotation
3.
Discharge
Figure 28: Counter\clockwise rotation viewed from the coupling end
Use the following instructions to reverse the suction and discharge nozzles, which changes the rotation:
1.
Remove the impeller from the shaft, turn it 180°, and replace it on the shaft.
Make sure to use the disassembly and assembly instructions in this manual.
2.
With the rotating element out of the casing, remove the casing from the baseplate and turn the cas-
ing 180°.
Factory-supplied baseplates are drilled for both rotations.
3.
Put the rotating element back in the casing and reassemble the pump.
The impeller and casing are in the same relationship to each other as they were originally. The shaft
and motor are also in the same relationship to each other as they were originally.
6.5 Disassembly
44
Model 3409 Installation, Operation, and Maintenance Manual
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