Troubleshooting Chart - Master Plumber 539906 Manual Del Propietário

Operation • Troubleshooting
Bracket
Pin
Float

Troubleshooting Chart

SYMPTOM
Pump won't start Pump is not plugged in.
or run. Blown fuse.
Low line voltage.
Defective motor.
Defective float switch.
Impeller.
Float obstructed.
Pump starts and Backflow of water from piping.
stops too often.
Faulty float switch.
Pump won't shut off. Defective float switch.
Restricted discharge
(obstacle or ice in piping).
Float obstructed.
Restricted intake screen.
Pump operates Low line voltage.
but delivers little
or no water.
Something caught in impeller.
Worn or defective parts or
plugged impeller.
Check valve installed without
vent hole.
Restricted intake screen.
Check valve is installed either
backward or upside down.
For parts or assistance, call Master Plumber Pump Customer Service at
Vertical Switch Assembly
Switch
Housing
Bracket
Mounting
Screws
Rod Stop
Rod
PROBABLE CAUSE(S)
1
Mount the bracket onto the switch
housing.
Slip the float and then the rod stop
2
onto the rod past the second nib.
3 Insert the rod assembly up into the
switch housing and lock into place
with the pin.
NOTICE Be sure the pin holds the
rod into the switch housing or the
pump will not shut off.
4 Attach the switch to the pump as shown.
CORRECTIVE ACTION
Check and see if pump is plugged in to a proper outlet.
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.
Remove the pump and clean the intake screen and the impeller.
If voltage under recommended minimum, check size of wiring
from main switch on property. If OK, contact power company
or hydro authority.
Remove the pump and clean out the impeller.
Clean impeller if plugged; otherwise replace pump.
Drill a 1/16" - 1/8" (1.6mm - 3.2mm) dia. hole between pump
discharge & check valve (1-2" above where the discharge
pipe screws into the pump discharge and below the waterline).
Remove the pump and clean out the intake screen.
Be sure check valve is installed correctly.
4
800-628-9439