Table of Contents
Advertisement
Available languages
Available languages
7)
Remove cap (5) and insert a screwdriver to prevent the shaft
from turning while unscrewing the impeller (6)(GE motors).
For A.O. Smith motors, remove rear cover and hold the
shaft using a flat wrench inserted from the side, through the
opening in the end housing. Impeller has right-hand thread.
If impeller cannot be turned by hand, insert a flat object into
the impeller vane.
8)
Slip the rotating seal (7) off the shaft and remove the seal
plate (8).
9)
Remove the ceramic seal seat (9) from the seal plate.
Reassembly:
1)
Clean all the parts thoroughly before assembling.
2)
Lightly lubricate (soapy water) the rubber cap on the ceramic
seal (9) and push it into the seal plate using thumbs only.
Make sure the smooth surface of the ceramic seat faces
outward.
NOTE: If the pump will remain out of service for longer than
one week, the seal components must be installed dry (no
lubrication).
3)
Put the seal plate back on the motor.
4)
Lubricate the rotating seal (7) with soapy water and slip it onto
the shaft with the 'carbon' ring towards the ceramic seat.
5)
Replace the impeller (6) and the diffuser (4).
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 to the pressure
switch.
8)
Reconnect the power.
9)
Prime pump, start, check for leaks.
TROUBLESHOOTING
a)
Motor will not start:
1)
No power to pressure switch due to blown fuses, open
switches or loose connections.
2)
Pump pressure switch not closed.
b)
Pump fails to deliver water:
1)
Pump not completely primed.
2)
Suction lift is too great.
3) Foot valve is either not submerged, buried in mud or
plugged.
c)
Pump loses prime:
1)
Air leaks in suction line.
2)
Well draw down too far.
3)
Faulty foot valve.
d)
Pump delivers water but not at rated capacity:
1)
Leaks in suction or discharge line.
2)
Foot valve, suction line, impeller or nozzle are
partially plugged.
3)
Suction lift is greater than recommended.
4)
Improper impeller rotation or low speed.
5)
Venturi or diffuser is plugged.
6)
Motor is wired for improper voltage.
7)
Motor does not come off starting windings(improper motor
switch adjustment).
e)
Pump starts and stops too often:
1)
Faulty air volume control.
2)
Air leaks in tank above the water level.
3)
Incorrect setting on pressure switch.
4)
Tank is water logged or too small for application.
6
Advertisement
Table of Contents
