Wayne CWS Serie Instrucciones De Funcionamiento página 8

Operating Instructions and Parts Manual
MAINTENANCE (CONTINUED)
PRE-CHARGED TANK
Some air is lost through the bladder in any tank. To prevent tank failure,
check the tank pre-charge on a yearly basis.
1. Disconnect power to the pump
2. Open a faucet nearest the tank and allow all water to drain from the
tank.
3. Measure the tank pre-charge at the valve stem using a tire gauge.
4. If necessary, adjust the pre-charge with an air pump 28 - 30 psi on
1/2, 3/4 and 1 HP pumps.
LUBRICATION
The bearing used in the pumps are lifetime lubricated at the factory and
require no additional lubrication.
CWS REPAIR KIT
1. Disconnect power from the pump.
2. Open faucet nearest the tank and allow all of the water to drain from
the tank and pump.
3. Remove 4 cap screws holding pump housing, do not disconnect
pressure switch. (Figure 12)
4. Remove pump housing from pump assembly, move it out of the
way.
5. Using a 5/16" socket or flat blade screw drive remove the 2 screws
from the diffuser on the pump assembly.
6. Remove the diffuser.
7. Remove the black plastic cap from the back of the motor, exposing
the motor shaft end.
8. Using a large flat bladed screw driver hold the motor shaft while
unscrewing the impeller.
9. Remove the seal plate. Pay attention to how the original shaft seal is
installed before disassembly.
10. Remove the shaft seal from the impeller, make sure the stainless
steel sleeve comes off the impeller, all you should see on the back of
the impeller is the brass colored threaded insert. (Figure 13)
11. Remove the ceramic seat and rubber boot part of the seal from the
cast iron seal plate. (Figure 13)
12. Remove the square cut gasket from the seal plate.
13. Reassemble the pump with new parts in reverse order.
14. Wipe down the seal plate to remove any debris or loose rust.
15. Push the ceramic seat of the shaft seal into the seal plate using the
cardboard ring provided to keep the ceramic face clean. You can
use a little water or dish soap to lubricate the seal pocket to make
assembly easier.
16. Slide the square cut gasket over the flange on the seal plate, make
sure not to let the gasket twist.
17. Carefully slip the seal plate over the shaft so as not to disturb seal
position in the seal plate. The seal plate must be orientated during
assembly so the two holes are on a horizontal line across the motor
shaft. (Figure 14)
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SEAL PLATE
CAP SCREWS
MOTOR
SQUARE CUT RING
Figure 12 - Convertible Well Pump
ROTATING
SHAFT SEAL
MEMBER
Figure 13 - Removing Shaft Seal and Ceramic Seat
Figure 14 - Seal Plate Replacement
8
PUMP
HOUSING
SEAL
(VOLUTE)
DIFFUSER
IMPELLER
DRAIN PLUG
SEAL PLATE
IMPELLER
RUBBER
SEAT RING
CERAMIC SEAT
SCREW
HOLES
MOTOR
SHAFT