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16.0 Troubleshooting
Before starting any work on the pump, make sure that the electricity supply is disconnected so that it
cannot be accidentally switched on.
Pump does not start.
1. No power supply. Connect the electricity supply
2. Too low/high voltage. Check if supply voltage is within
+/- 10%
3. Inadequate pressure at suction discharge. Adjust pres-
sure switch. (See Pump Manual)
4. Seized-up pump. Place a screwdriver against the shaft
end of the motor to check if the rotor will spin freely, if not
contact your BRAC Systems service representative.
Pump cuts out during operation.
1. Overloaded motor. Unplug the power supply and plug
back in, this will reset the pump.
2. Poor water supply. Check if pump suction inlet is
blocked.
3. Overheating due to excessive water temperature
a. Wait until water temperature cools down before restart-
ing the pump.
b. Check water supply source.
Pump starts when no water is consumed.
1. Leak in piping. Check for leaks and repair.
2. Defective check valve or suction foot valve. Inspect and
clean check valve and/or foot valve. Replace if necessary.
Pump starts and stops too frequently.
1. Leakage in suction foot valve pipe or air in water. Check
the suction pipe and water supply.
2. Discharge flow is too low. Adjust fixture to a higher
water flow.
3. Air tank pressure is too low . Check air tank pressure
and recharge.
Electric shock.
Ineffective grounding. Reactivate grounding.
Pump does not stop when water is not con-
sumed.
1. Low water level in tank, pump is sucking air.
a. Unplug the power cord and open the red filling plug to
release air.
b. Check make-up water connection for adequate flow.
2. Pressure is set too high, adjust pressure. (See Pump
Manual)
3. Flow is set too low, adjust flow. (See Pump Manual)
4. Defective check valve or suction foot valve. Inspect and
clean check valve and/or foot valve. Replace if necessary.
Pump runs normal but with very low dis-
charge flow.
1. 3-phase motor runs in wrong rotation. Switch any of the
two wires from motor terminal to correct rotation.
2. Poor water supply. Check if water supply is adequate
and if the suction foot valve unit pipe is blocked.
