Publicidad
Idiomas disponibles
Idiomas disponibles
Replacing Mechanical Seals
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 seal faces.
Disassembly
1.
Disconnect pump from the power source.
2. Drain the pump.
• Refer to
"Draining" on page
3. Disconnect the tubing leading to the pressure
switch.
4. Remove the bolts (1) and casing (2).
5. Pry the diffuser (3) out of the casing, using
two slotted screwdrivers for leverage.
6. Remove the cap (4) and insert a screwdriver
to prevent the shaft from turning.
7. Unscrew the impeller (5).
• The impeller has a right-hand thread.
• If the impeller cannot be turned by hand,
insert a flat object into the impeller vane.
8. Slip the rotating seal (6) off the shaft.
9. Remove the seal plate (7).
10. Remove the ceramic seal seat (8) from the seal plate.
11. Inspect all parts and replace any that are worn or damaged.
Reassembly
1.
Clean 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 with the smooth surface of the seal facing outwards.
• Wear gloves to avoid contaminating the seal face.
3. Install the seal plate (7) on the motor.
4. Lubricate the rotating seal (6) with soapy water and slip it onto the shaft with the carbon ring
towards the ceramic seal.
5. Replace the impeller (5) and the diffuser (3).
6. Replace the casing (2), making sure that the gasket is not damaged and is in place.
7. Reconnect the tubes to the casing and pressure switch.
8. Replace the drain and fill plugs.
9. Refer to
"Operation" on page 7
8.
to start the pump.
Replacing Mechanical Seals
8
1
6
2
5
3
7
MAINTENANCE
4
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