4
230/460 pump stators are wound so they can be wired either
230 or 460 volt. New pumps are shipped connected for specific
voltage ordered.
To change the voltage, remove the six nuts (13) that secure the
lead wire housing (12). Lift off the lead wire housing being careful not
to damage the seal ring (14) assembly. Change wiring as required
per the following diagram (See section D3 - D6).
3 PHASE DUAL VOLTAGE
WIRING DIAGRAM
After changing leads, lightly oil seal ring (14). Insure that wire
leads will not be pinched and position the lead wire housing (12)
on the motor housing (20) securing with nuts (13).
Before installing a pump, check the pump rotation. Insure that
wiring has been completed to proper power source and that the
green lead of power cord (see illustration) is connected to a valid
ground. Momentarily energize the pump, observing the direction
of kick back due to starting torque. Rotation is correct if kick back
is in the opposite direction of rotation arrow on the pump casing. If
rotation is not correct, switching of any two power leads other than
ground will provide the proper rotation.
See page 7 for illustration for identification of wire leads in the
sensor cord to make proper connections for the seal failure alarm
and the motor temperature sensor circuit.
OPERATION
Before putting the pump into operation, the following items should
be checked to insure that the pump is installed correctly.
• Electrical connections
• Pump rotation
DISASSEMBLY PROCEDURES
A. Before you begin...
1. Shut off pump.
2. Disconnect power source.
3. Remove pump from system.
B. When removing impeller (42)...
1. Complete Section A.
2. Remove the eight screws (22) and lock washers (23) from
the flange of the motor housing (20).
3. Remove the pump housing (48), O-ring (47), and U-cup/
wear ring packing (46).
4. Immobilize the impeller (42) by holding the vanes with
a pipe wrench. Using a socket, remove the impeller bolt
(45), lock washer (44), and impeller washer (43).
5. Using two long-handled screwdrivers as levers, carefully
pry the impeller (42) from the shaft.
6. Remove the square key (30) from motor shaft.
Note: Impeller hub serves as lower seal retainer. When impeller
is removed, seal spring will fall free.
C. When removing rotary seals (36 and 41)...
1. Complete Sections A and B.
CAUTION
Do not touch sealing face of the rotating section or the stationary
section of the rotary seal (36 or 41) when removing or installing
seal. When seal replacement is required, cleanliness is of utmost
importance. Seal replacement should be done in shop atmosphere
if possible.
2. Remove the spring of the lower rotary seal (41) from the
shaft. See rotary seal component placement diagram for
part identification.
3. Remove the pipe plug (27) in the bottom seal retainer
(40) and drain oil from the chamber behind the retainer.
4. Remove the four socket head cap screws (39) from the
seal retainer (40).
5. Remove the seal retainer (40) with remaining parts of the
lower seal assembly (41).
6. Press seal seat out of the seal retainer (40).
7. Remove the seal ring (38) and inspect.
8. Slowly remove the large pipe plug (21) from side of motor
housing (20).
9. Remove the lower pipe plug (27) from the side of motor
housing (20) and drain the oil from the motor housing
(20).
Note: Pump assembly will have to be tipped on its side to
completely drain the oil.
10. Remove the snap ring (37) from the shaft and remove
the spring holder and seal spring of the upper rotary seal
(36) from the shaft.
11. Using a bearing puller or other suitable tools, pull the
rotating section of the upper rotary seal (36) from the
rotor shaft. If needed, carefully pry rotating section loose
with screwdrivers and pull off by hand.
12. The stationary seat can be pried out of the bearing housing
(34) with a screwdriver. Use care not to chip seat as chips
may fall into motor.
D. When removing power cord and sensor cords
(7 and 11)...
1. Complete Section A.
2. Remove six nuts (13) and lock washers (5), that secure
the lead wire housing (12) to the motor housing (19).
3. Pry the lead wire housing (19) off using two screwdrivers.
ZEPA0037
© Copyright 2019 Zoeller
®
Co. All rights reserved.
POWER CORD
460 VOLT CIRCUIT
230 VOLT CIRCUIT
POWER CORD
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Disassembly Procedures
