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  • Sump, Sewage, Effluent, and Dewatering Pumps
    • Pump will not start or run

      Check fuse, low voltage, overload open, open or incorrect wiring, open switch, impeller or seal bound mechanically, motor or wiring shorted. Float assembly held down. Switch, damaged or out of adjustment.

    • Motor overheats and trips overload or blows fuse

      Incorrect voltage, negative head (discharge open lower than normal) impeller or seal bound mechanically, motor shorted.

    • Pump starts and stops too often

      Float switch tether length too short, check valve stuck open, or none installed in long distance line, overload open, bidding, sump pit too small.

    • Pump will not shut off

      Debris under float assembly, float bound by basin sides or other, switch, damaged or out of adjustment.

    • Pump operates but delivers little or no water

      Check inlet, strainer housing, discharge pipe, and vent holes for obstructions. Discharge head exceeds pump capacity. Low or incorrect voltage. Incoming water containing air or causing air to enter pumping chamber. Incorrect motor rotation. (3 phase pumps only)

    • Drop in head and/or capacity after a period of use

      Increased pipe friction, clogged line or check valve. Abrasive material and adverse chemicals could possibly deteriorate impeller and pump housing. Check line. Remove base and inspect.

    • Tank or fittings leak

      Carefully tighten pipe joints (use pipe dope) and screws. Check gasket location, tighten lid evenly. Do not over tighten fittings or screws.

  • Progressing Cavity Grinder Pumps
    • Pump will not start or run

      Blown panel or circuit breaker fuse, low voltage, thermal overload open, defective capacitor
      circuit, cutter clogged, damaged hydraulic stator or rotor, float switch held down or defective,
      incorrect wiring in control panel, water in cap assembly, check valve not installed or
      malfunctioning.

      Possible Cause Corrective Action
    • Motor overheats and trips on overload

      Incorrect voltage, hydraulic rotor or cutter blocked, negative head (discharge lower than intake
      of pump). Defective “off” float. Pump runs continuously at low water level. Low oil level in motor
      shell. Pump running at shut-off head, check valve not installed or malfunctioning.

    • Pump will not shut off

      Debris under float assembly, defective switch, incoming sewage exceeds capacity of pump.

    • Pump operates but delivers little or no water

      Intake clogged with grease or sludge, damaged hydraulic stator or rotor, low or incorrect voltage,
      clogged discharge line, operating near shut-off head.

    • Pump starts and stops too often

      Check valve stuck open or defective. Sump pit too small to handle incoming sewage. Level
      control out of adjustment. Thermal overload tripping.

    • Large red flashing light comes on at control box

      High water in pit. Check pump for clogging, or overload trip.

    • Grease and solids accumulate in pit around pump

      Break up solids and run pump with water running into the pit. Allow level to lower to the pump
      intake. Continue until solids are cleared from the pit. Do not drain kitchen grease down the sink.

      Possible Cause Corrective Action
  • Fractional Horsepower Grinder Pumps
    • Pump will not start or run

      Check fuse, low voltage, overload open, open or incorrect wiring, open switch, impeller or seal bound mechanically, defective capacitor or relay when used, motor or wiring shorted. Float assembly held down. Switch defective, damaged, or out of adjustment.

      Possible Cause Corrective Action
    • Motor overheats and trips overload or blows fuse

      Incorrect voltage, negative head (discharge open lower than normal) impeller or seal bound mechanically, defective
      capacitor or relay, motor shorted.

      Possible Cause Corrective Action
    • Pump starts and stops too often

      Float tight on rod, check valve stuck or none installed in long distance line, overload open, level switch(s) defective,
      sump pit too small.

      Possible Cause Corrective Action
    • Pump will not shut off

      Debris under float assembly, float or float rod bound by pit sides or other, switch defective, damaged or out of adjustment.

      Possible Cause Corrective Action
    • Pump operates but delivers little or no water

      Check strainer housing, discharge pipe, or if check valve is used vent hole must be clear. Discharge head exceeds pump capacity. Low or incorrect voltage. Incorrect motor rotation. Capacitor defective. Incoming water containing air or causing air to enter pumping chamber.

      Possible Cause Corrective Action
    • Drop in head and/or capacity after a period of use

      Increased pipe friction, clogged line or check valve. Abrasive material and adverse chemicals could possibly deteriorate impeller and pump housing. Check line.

      Possible Cause Corrective Action