Wayne SWS50-1/2 HP Instructions D'utilisation Et Manuel De Pièces page 5

Maintenance
(Continued)
valve. The air valve will expel water if
the bladder is broken.
2. If broken, replace the tank.
NOTE: Once a bladder is leaking or
broken, the bladder cannot be repaired.
The tank must be replaced.
LUBRICATION
The bearings used in the pumps are
lifetime lubricated at the factory and
require no additional lubrication.
PRECHARGED TANK
Some air is lost through the bladder in any
tank. To prevent tank failure, check the
tank precharge on a yearly basis.
1. Disconnect power to the pump, so water
does not refill the precharged tank.
2. Open a faucet nearest the tank and allow
all water to drain from the tank.
3. Measure the tank precharge at the
valve stem using a tire gauge.
4. If necessary, adjust the precharge with
an air pump 28 - 30 psi on 1/2, 3/4 and
1 HP pumps.
5. Reconnect power to the pump.
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).
4. Separate the pump housing (volute)
from the motor to expose the diffuser
and the seal plate.
5. Remove the two cap screws and
diffuser from the seal plate to expose
the impeller.
6. Remove the small end cap on the end
of the motor opposite the impeller.
7. With a large screwdriver, keep the shaft
from rotating and remove the impeller
by hand (standard right hand thread).
Be sure to hold onto the seal plate
when removing the impeller from the
shaft.
CAP SCREWS
MOTOR
Figure 8 - Shaft Seal
8. Remove the seal plate.
9. Pry the rotating shaft seal member
(including stainless collar and rubber
seal) from the impeller (Figure 9).
10. Push or pry the ceramic seat, and
rubber seat ring free from the seal plate
(Figure 9).
11. Remove loose particles from impeller
hub and seal plate.
INSTALLING NEW SHAFT SEAL
clean. Dirt or grease MAY damage the seal.
1. Wet the inside of the seal cavity on
seal plate and the rubber cup enclos-
ing the new ceramic seat with cook-
ing 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
ROTATING
SHAFT
SEAL MEM-
Figure 9 - Removing Shaft Seal and
Ceramic Seat
shaft (Figure 10). This placement should
be done to ensure proper draining and
priming.
3. Place rotating shaft seal member in
SEAL PLATE
DIFFUSER
CAP SCREWS
IMPELLER
VENTURI
4.
5.
6.
Before handling shaft
seal parts wipe hands
Maintenance
7.
SEAL
PLATE
Figure 10 - Seal Plate Replacement
IMPEL-
RUBBER
SEAT RING
NOTE: Shaft must rotate freely and
motor end cap should be secured before
CERAMIC
SEAT
SEAL
SEAT
Figure 11 - Motor Shaft
operation.
PUMP
HOUSING
(VOLUTE)
5
SWS Systems
position on impeller and press into
place. Take care not to press against
polished seal surface.
Position impeller on shaft and tighten
securely (Figure 11).
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.
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
(Continued)
and positioning makes a good seal
inside the diffuser when assembled.
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.
MOTOR
SEAL PLATE
IMPELLER
BE CLEAN FOR
PROPER SEAL
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SCREW
MOTOR
SEAL
PLATE
SEAL
FACE
MUST