MYERS DE Serie Manual De Instrucciones página 5

Maintenance
MAINTENANCE
Hazardous voltage. Can shock, burn, or
cause death. Before removing pump from basin for ser-
vice, always disconnect electrical power to pump and
control switch.
After removing basin cover and necessary discharge pip-
ing, lift pump out of basin.
Risk of electrical shock. Can burn or kill. Do
not lift pump by power cord. See "Lifting Pump" and
Figure 1, on Page 3.
Place pump in an area where it can be cleaned thorough-
ly. Remove all scale and deposits on the pump.
Submerge complete pump in a disinfectant solution
(chlorox or similar strength chlorine solution) for at least
one hour before disassembling pump.
The pump seal plate contains a special lubricating oil
which should be kept clean and free of water at all times.
Seal and Impeller Replacement
To replace the impeller, follow steps 1 through 3. Reverse
the steps to reassemble the pump.
To replace the mechanical shaft seal, follow Steps 1
through 9; reverse the steps to reassemble the pump.
To replace the oil seal, follow Steps 1 through 11.
See the Repair Parts Illustrations, Pages 6, 8 and 10, for
part identification.
1. Disconnect the power to the pump.
2. Remove the base, diffuser, and gasket (DE40PC1 and
DE50PC1) or O-Ring (DSW40P1 through
DSW100M4).
NOTE: Models DE40PC1 and DE50PC1 have the dif-
fuser in one piece with the base. For Models
DSW40P1 through DSW100M4, the diffuser is sepa-
rate from the base.
3. Remove the impeller nut and washer; pull the impeller
off of the shaft.
4. Remove the sand shield and washer from the shaft.
5. Remove the drain plug and drain the oil out of the seal
chamber.
6. Remove the rotating half of the mechanical seal from
the pump shaft.
7. Remove the rotor/shaft assembly from the pump body.
8. Carefully tap the shaft out of the seal plate (DE40PC1
and DE50PC1) or pump body (DSW40P1 through
DSW100M4).
9. Remove the stationary half of the mechanical seal from
the seal plate (DE40PC1 and DE50PC1) or pump body
(DSW40P1 through DSW100M4).
10. Slide the lower bearing holder off of the shaft and pop
the oil seal out of the lower bearing holder.
11. Reverse steps 1 through 10 to reassemble the pump.
Use 40 grams (1.6 ounces) of U197-8A oil to refill the
oil chamber.
Capacitor Change
1. Disconnect the power to the pump.
2. Remove the motor cover from the top of the motor
assembly.
3. Remove the plastic capacitor box cover.
4. Remove the screw holding the capacitor tie-down
strap.
5. Remove the capacitor and cut the wires running to it.
6. Strip the wires for the new capacitor and install the
new capacitor. See Table 2 for capacitor specifications.
7. Reverse steps 1 through 4 for reassembly. Connect the
wires with the correct size wire nuts.
TABLE II
Model
DE40PC1 45mF, 250V
DE50PC1 45mF, 250V
DSW40P1 45mF, 250V
DSW50P1 45mF, 250V
DSW50M2 16mF, 450V
DSW100M2 20mF, 450V
DSW100M4
Cord Replacement
1. Disconnect the power to the pump.
2. Remove the motor cover from the top of the motor
assembly.
3. Cut the cord wires in the top of the motor assembly.
4. Remove the cord clamp locking nut and pull the cord
out of the motor cover.
5. Insert the new cord through the hole in the motor
cover and clamp it with the locking nut.
6. Clip the motor leads as close as possible to the wire
nuts, strip the new cord leads and the motor leads, and
connect the new cord. Add new wire nuts.
7. Replace the capacitor cover, the motor cover, and the
motor cover O-Ring.
Capacitor Capacitor
Rating Dimensions
45 x 71 mm
45 x 71 mm
45 x 71 mm
45 x 71 mm
35 x 71 mm
40 x 71 mm
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