Troubleshooting Chart - Pentair MYERS SP33 Serie Notice D'installation

TROuBLEShOOTING ChART

SYMPTOM
Pump won't start or run.
Pump starts and stops too often.
Pump won't shut off.
Pump operates but delivers little
or no water.
NOTICE: A plugged screen can be mistaken for a faulty switch. Unlike other pumps, screen and impeller design of pump can
provide significant flow, even when screen is nearly plugged. If pump runs continuously or for extended periods, FIRST check
for a DIRTY SCREEN.
PROBABLE CAuSE(S)
Blown fuse.
Low line voltage.
Defective motor.
Defective float switch.
Impeller.
Float obstructed.
Backflow of water from piping.
Faulty float switch.
Defective float switch.
Restricted discharge
Float obstructed.
Low line voltage.
Something caught in impeller.
Worn or defective parts or
impeller
CORRECTIVE ACTION
If blown, replace with fuse of proper size.
If voltage under recommended minimum, check size of wiring from main
switch on property. If OK, contact power company or hydro authority.
Replace pump.
Replace float switch.
If impeller won't turn, remove lower pump body and locate source of
binding.
Remove obstruction.
Install or replace check-valve.
Replace float switch.
Replace float switch.
Remove pump and clean pump and piping.
Remove obstruction.
If voltage under recommended minimum, check size of wiring from main
switch on property. If OK, contact power company or hydro authority.
Clean out impeller.
Clean impeller if plugged; otherwise replace pump.
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