Pump Disassembly; Shaft Seal Replacement - Pentair HYDROMATIC HTS33 Serie Manual De Instalación, Operación Y Repuestos

Pump Disassembly

Impeller and Seal Replacement
A. Impeller removal (See the pump disassembly drawing at
right:
1. Remove the oil fill plug and turn the pump upside
down to drain oil.
2. Remove the capscrews holding the upper motor
housing to the lower motor housing; lift off the upper
motor housing and remove the motor lead wires from
the connector to detach upper housing from assembly.
The lead wires are fitted with quick connect terminals
for this purpose.
3. Remove the capscrews holding the lower motor
housing to the volute; lift off the lower motor housing.
4. Hold the rotor shaft assembly and unscrew the
impeller by turning it counter-clockwise. Remove
impeller and clean it.
If no more service is needed, reverse instructions above
to reassemble the pump. Reattach the motor lead wires
as shown in Figure 1, fill with clean dielectric oil (Part
No. U197-8A), check the oil level and replace fill plug.
Oil should cover the motor windings.
Green Wire
(connected between
the two tallest
dividers)
View A-A
Figure 1
B. Shaft seal replacement:
1. Follow the instructions to remove the impeller, above.
2. Remove the stator capscrews and the spacers (if
applicable). Lift off the stator.
3. Remove the seal's ceramic seat from the shaft and tap
the body of the seal out of the lower motor housing.
4. Clean the seal cavity thoroughly before installing the
new seal. NOTICE: Make sure that the seal faces are
clean; do not scratch or damage the new seal face
during seal replacement. Apply Permatex #2 or an
equivalent sparingly to the outside edge of seal body
before installing the seal in the lower motor housing.
WARNING
Risk of electrical shock.
Can burn or kill.
Do not lift pump by
power cord.
Either Black Wire
Short Divider
Either Black Wire
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CORD LIFT WARNING
5. Press the new seal body into position in the lower
housing cavity.
6. Press the ceramic seat onto the motor shaft. The
impeller will pull it into position.
7. Reassemble the stator and tighten the stator
capscrews.
8. Reassemble the impeller and the pump (reverse
instructions 1 through 4 in section A).
9. Reattach the motor lead wires as shown in Figure 1.
10. Fill with clean dielectric oil (Part No. U197-8A), check
the oil level (it should be about 7/8" below the boss in
the motor housing to allow for expansion) and replace
the oil fill plug.
Pump Disassembly
HTS33 Series
Pump Disassembly
Oil Fill
Plug
Housing
Capscrew
Insulating
Disk
Rotor/Stator
Assembly
Stator
Capscrew
Grn
Blk
Blk
1. Attempting to lift or support pump by power cord
can damage cord and cord connections.
2. Cord may pull apart, exposing bare wires with
possibility of fire or electrical shock.
3. Lifting or supporting pump by power cord will
void warranty.
4. Use lifting ring or handle on top of pump for
all lifting/lowering of pump. Disconnect power
to pump before doing any work on pump or
attempting to remove pump from sump.
3
Power Cord
O-Ring
Lower
Motor
Housing
Shaft Seal,
Stationary
Head Ass'y
Shaft Seal,
Rotating
Mating Ring
Impeller
Volute
410 0893