6
REMOVING OLD SHAFT SEAL
Disconnect power and release all pressure from the system before attempting to
install, service, relocate or perform any maintenance.
1. Disconnect power to the pump.
2. Open a faucet nearest the tank and allow all water to drain
from the tank.
3. Remove the four cap screws holding the pump housing
(volute) to the motor (Figure 8) and seperate the pump
housing.
4. Remove the small end cap on the end of the motor
opposite the impeller. With a large screwdriver, remove the
impeller by hand
5. Remove the seal plate.
6. Pry the rotating shaft seal member (including stainless collar
and rubber seal) from the impeller (Figure 9).
7. Push or pry the ceramic seat, and rubber seat ring free from
the seal plate (Figure 9).
8. Remove loose particles from impeller hub and seal plate.
INSTALLING NEW SHAFT SEAL
Before handling shaft seal parts wipe hands clean. Dirt
or grease MAY damage the seal.
1. Wet the inside of the seal cavity on seal plate and the rubber
cup enclosing the new ceramic seat with cooking oil. Be
careful not to scratch the ceramic surface of the seal seat
and push seat enclosed in rubber into seal cavity on seal
plate. Use a cardboard washer to protect polished surface
when pushing against ceramic seat with any object. Be sure
to remove cardboard washer.
2. Carefully slip seal plate over shaft. Do not disturb seal
position in seal plate. The seal plate must be orientated
during assembly so the two screw holes are on a horizontal
line across the motor shaft (Figure 10). This placement
should be done to ensure proper draining and priming.
3. Place rotating shaft seal member in position on impeller and
press into place. Take care not to press against polished seal
surface.
4. Position impeller on shaft and tighten securely (Figure 11).
5. Secure diffuser to seal plate using the two cap screws. Be
sure the arrow on the front of the diffuser is pointing up and
the screws are orientated on a horizontal line as described in
Step 2.
6. Carefully position pump housing (volute) gasket over the
diffuser onto the seal plate. In all shallow well applications
care must be taken that the o-ring is clean and properly
positioned on the venturi. Cleaning and positioning makes a
good seal inside the diffuser when assembled.
7. Assemble the pump housing (volute) to the motor using the
four cap screws. Be sure the pump housing (volute) gasket is
positioned correctly and tighten the screws securely.
NOTE:
Shaft must rotate freely and motor end cap should be
secured before operation.
MAINTENANCE (CON'T)
SWS Systems
Operating Instructions and Parts Manual
www.waynepumps.com
L2 3
L1
1
Figure 7 - Electrical Connections
MOTOR
LINE
GROUND SCREW
Figure 8 - Shaft Seal
CAP SCREWS
DIFFUSER
PUMP HOUSING
(VOLUTE)
CAP SCREWS
SEAL PLATE
MOTOR
IMPELLER
VENTURI
Figure 9 - Removing Shaft Seal and Ceramic Seat
ROTATING SHAFT
SEAL MEM-
SEAL PLATE
CERAMIC SEAT
IMPELLER
RUBBER SEAT RING
Figure 10 - Seal Plate Replacement
SCREW
MOTOR
Figure 11 - Motor Shaft
SEAL PLATE
SEAL FACE
MUST BE
CLEAN FOR
PROPER SEAL
SEAL PLATE
MOTOR
IMPELLER
SEAL SEAT
