1

Pump does not start

No power supply

Check power supply.

Very low voltage

Check the input supply wire capacity (size) whether it is adequate for the given load and also check for any loose Connections. Consult Power supplier for low voltage supply.

Fuse blown up

Check for voltage at motor terminal replace fuse. If new fuse also blows out, recheck all electrical wiring

Capacitor failure

Replace capacitor

Motor protector is open due to over heating

Check free rotation of the rotor by rotating the shaft.

Check supply voltage.

Check pump input current.

Impeller stuck

Check and correct it. Cover the foot valve or stainer with a close meshed strainer to avoid foreign particles entering into the pump.

Broken circuit in incoming leads

Check all circuits and remedy fault.

2

Pump rotates but it does not deliver water

Priming is not sufficient

Fill water completely and ensure priming plug is tightened well.

Too many bends & elbows in suction & delivery pipe line

Reduce bends & elbows as much as possible.

Suction Lift too high

Install the pump closer to the water level. Suction lift to be within recommended depth.

Foot valve or inbuilt check value in regenerative monoset self priming pump is not functioning.

Repair or replace it.

Wrong direction of rotation

Correct the direction of rotation to coincide with direction indicated by the arrow mark on the pump.

Total head higher than the specified one

Reduce the total head or change to a suitable range pump.

Air being sucked in through the suction pipe line

Check the pipe for leakage and correct it.

Leakage in air cock

Tighten the air cock. If necessary replace it.

Smaller size pipes used

Change the pipes to the recommended sizes

Mechanical seal leaking

Change the mechanical seal

Foot valve or impeller or pipe blocked

Clean the pipe, impeller and foot valve

3

Pump requires excessive power or heats and ceases

Low voltage

Check the supply wire capacity (size) and also check for any loose connections. Contact the power supplier to rectify low voltage.

4

Pump vibrates and noisy

Mechanical seal improperly fitted or damaged. Check valve / foot valve malfunctioning.

Check seal, correct and replace if required

Bearing worn out / incorrectly fitted

Replace bearing and use recommended quality grease

Vibration of pipes with support

Securely hold pipe lines

Impeller blocked

Clean impeller

Shaft bend

Rectify or replace it

Check valve / foot valve malfunctioning

Rectify or replace

5

Mechanical seal Leaking

Excessive silt content or foreign particles trapped in seal faces.

Replace the seal. Cover the foot valve or strainer with a closed mesh strainer

Dry running

Change the seal

Seal fitted improperly

Check seal and refit

Bearing worn out

Replace bearings

6

Pump jam

Kept idle for long time

Rotate the pump shaft with a screwdriver inserting it in the slotted portion of the shaft, which is provided at cooling fan side of the motor. If this is not enough to solve the problem, unscrew the bold and rinse/clean the pump thoroughly until the pump shaft rotates freely by hand.

Pump should be run for few minutes atleast once in three days.