Pump Usage Methods and Precautions

Pump Usage Methods and Precautions

I. Preparations before Use

Whole machine inspection

Check that the pump body, inlet and outlet are free from damage or cracks; the inlet and outlet pipes are in good condition without aging or air leakage; the connection terminals and plugs have no looseness or damage.

Screws and base are firmly tightened; the impeller is not stuck.

Installation and placement

Place the pump on a flat, stable, dry and ventilated position. Avoid tilting or hanging.

Strictly prohibit immersion of the motor in water or rain exposure; self-priming pumps should be placed as close to the water source as possible to reduce the length of the suction pipe.

Pipe installation

The inlet pipe must be equipped with a bottom valve and filter screen to prevent sand and stones from being sucked in and damaging the impeller.

The pipe joints should be wrapped and sealed to prevent air leakage. Air leakage will result in no water being pumped or slow water flow.

Key step for water intake and pump start-up

Self-priming pumps and centrifugal pumps must be filled with water before use and the air inside the pump body should be drained;

Starting the pump without water will cause the seal to be burned and no water to be pumped.

Power supply inspection

Voltage matching and reliable grounding; the wires should not be overloaded or connected to a faulty power strip;

Farmers using outdoors must be equipped with an electric leakage protection switch.

II. Correct Startup Steps

Confirm that the outlet valve is half-open or fully open. Do not start under pressure without water.

After all the pipes and water intake are installed, connect the power supply and start the pump.

After starting, observe: is the water flow smooth, are there any abnormal sounds, violent vibrations, or water leakage?

If no water is pumped: immediately stop the machine, refill the water intake, and check if the inlet pipe is leaking or if the bottom valve is leaking.

III. Operating and Usage Norms

After starting, run at no-load for 1-2 minutes until the water flow is stable before normal water supply.

Do not run without water under pressure. Long-term running at no-load will burn the mechanical seal and the motor.

Do not frequently start and stop. The interval between two starts should be no less than 3 minutes to prevent burning the motor.

When pumping water with a lot of sand, try to work intermittently for a short period to reduce the wear of the impeller.

During operation, if there are abnormal sounds, smoke, overheating, water leakage, or tripping, immediately cut off the power and stop the machine.

IV. Prohibited Practices During Use

Do not run the pump under water without water or run it for a long time under pressure to burn the mechanical seal and the motor.

Do not extract stones, branches, or large debris as they may jam the impeller.

Do not connect the wires outdoors during rainy days. Take waterproof measures for the wiring and do not immerse the wires in water to prevent electric shock.

Do not operate under overload for a long time. Allow the machine to cool down appropriately when it is hot.

Keep children and irrelevant personnel away from the running pump and pipe interfaces to prevent pipe breakage and injury.

V. Shutdown Operation

First, turn off the power supply, then close the outlet valve.

Do not suddenly stop under pressure to avoid water hammer damage to the pump body and pipes.

VI. Maintenance and Storage After Use

Drain the remaining water in the pump body and pipes, especially in winter, drain the accumulated water to prevent the pump body from cracking due to freezing.

Clean the sand and debris in the inlet filter screen, dry the water stains and dust on the body.

Check the aging condition of the pipes, replace them in time if they are cracked or hard.

Store the pump indoors in a dry, ventilated, rain and sun-shielded place, away from areas accessible to children.

If not used for a long time, disconnect the power supply and run the pump at no-load once a month for motor maintenance.

VII. Simple Troubleshooting for No Water Flow

The pump body is not filled with water intake → refill water and release air

Inlet pipe leaks or the joint is not tight → re-wrap with tape for sealing

Bottom valve is stuck or leaking → clean or replace the bottom valve

Suction height is too high or the distance to the water source is too far → lower the height and shorten the inlet pipe

Impeller is clogged → cut off power, remove and clean the debris