MAINTENANCE
Replacing Mechanical Seals
8
Replacing Mechanical Seals
Disassembly
IMPORTANT: Do not disassemble
the pressure tank.
1. Ensure the pump is disconnected
from electrical power and drained.
2. Remove the bolts (1) and casing (2).
3. Remove fan shroud fasteners from
the motor and remove the fan shroud
(3).
4. Remove the impeller (4) by firmly
holding on to the motor fan (5) and
turning the impeller clockwise.
5. Slip rotating seal (9) off the shaft.
6. Remove motor tie bolts.
7. Remove motor (6) from adapter (7) by slightly tapping end of motor shaft with a mallet.
8. Remove the adapter plate and the O-ring.
9. Inspect all parts and replace any that are worn or damaged.
Reassembly
1. Clean and lubricate all parts thoroughly with dish soap and water before assembling, including the
rubber cap on the ceramic seal (8).
NOTE: If the pump remains out of service longer than one week, the components must be
installed dry and without lubrication.
2. Push the ceramic seal into the adapter (7) with the smooth surface of the seal facing outwards.
Usethumbs only.
3. Reassemble the motor (6) to the adapter.
• Align the adapter plate tabs with the slot at the bottom of the motor housing.
4. Lubricate the rubber components of the rotating seal (9) with soapy water and slip it onto the shaft
with the carbon ring towards the ceramic seal.
5. Replace the impeller (4) and the shroud with fasteners.
6. Lubricate and replace the O-ring.
7. Replace the casing (2), making sure the O-ring is in place and not damaged.
8. Replace the drain and fill the plugs
9. Refer to “
Operation” on page 6 to start the pump.
Risk of damage to pump or other property.
• Only qualified persons should perform maintenance on electrical or mechanical devices.
• Care must be taken not to damage the motor fan or cover.
• Do not use petroleum-based cleaners or lubricants.
• Care must be taken not to contaminate the ceramic seal face.
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