Goulds Pumps 3409 - IOM - Manual (Page 40)

CHANGING ROTATION
3409 centrifugal pumps can be operated clockwise or
counterclockwise when viewed from the coupling end of
the pump (Fig. 15). If you wish to reverse the suction and
discharge nozzles; i.e., change rotation, this can be
accomplished with the same pump as follows:
1. Remove the impeller from the shaft, turn it 180° and
replace it on the shaft. (Follow the disassembly
procedures given in this manual.)
2. With the rotating element out of the casing, remove the
casing from the baseplate and turn 180°. (Factory
baseplates are drilled for both rotations.)
3. Set the rotating element back in the casing and
reassemble the pump.
NOTE: 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.
4. Reassemble the pump and realign the coupling as
called for in the alignment instructions.
5. The rotation of the motor must be changed by
switching motor leads.
NOTE: Unless the motor rotation is reversed the
impeller will run backward.
$
CAUTION
Check motor fan to make sure it is bi-directional. If
not, motor fan will have to be turned around or
replaced. Failure to do this could cause motor to run
hot.
40
3409 IOM 11/04
Fig. 15