Maintenance; Maintenance Overview - Pentair Myers DE Serie Manuel D'installation Et D'utilisation

MAINTENANCE

MAINTENANCE OVERVIEW

Pump normally runs hot. To avoid burns when servicing pump,
allow it to cool for 20 minutes after shutdown before handling it.
Do not run pump dry. Dry running can overheat pump and will
void the warranty.
Hazardous voltage. Can shock, burn, or cause
WARNING
death. During operation the pump is in water. To avoid fatal
shocks, read and follow all instructions.
1. Before removing pump from basin for service, always
disconnect electrical power to pump and control switch.
2. After removing basin cover and necessary discharge piping,
lift pump out of basin.
3. Place pump in an area where it can be cleaned thoroughly.
4. Remove all scale and deposits on the pump.
5. Submerge complete pump assembly in a disinfectant
solution (Clorox® or similar strength chlorine solution) for at
least one hour before disassembling pump.
6. The pump seal plate contains a special lubricating oil which
should be kept clean and free of water at all times.
SERVICING
Pump is permanently lubricated. No oiling or greasing is
required in normal operation.
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.
Refer to the Parts List section of this manual for part
identification.
1. Disconnect the power to the pump.
2. Remove the base/diffuser. Additionally, remove gasket or
o-ring, depending on model.
Models DE40PC1 and DE50PC1 have the diffuser in
one piece with the base. For Models DSW40P1 through
DSW100M2, the diffuser is separate 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 on models
DE40PC1 and DE50PC1 or the pump body on models
DSW40P1 through DSW100M2.
6
9. Remove the stationary half of the mechanical seal from the
seal plate (DE40PC1 and DE50PC1) or pump body (DSW40P1
through DSW100M2).
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 below for capacitor specifications.
7. Reverse steps 1 through 4 for reassembly. Connect the
wires with the correct size wire nuts.
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 on 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, motor cover and the motor cover
o-ring.
TABLE 2
Model Capacitor Rating
DE40PC1 45mF, 250V
DE50PC1 45mF, 250V
DSW40P1 45mF, 250V
DSW50P1 45mF, 250V
DSW50M2 16mF, 450V
DSW100M2 20mF, 450V
Capacitor
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
253P7090 (2-21-20)