What Are The Characteristics And Maintenance Methods Of Vertical Sewage Pumps

Sep 21, 2025

Vertical sewage pumps can be moved or fixedly installed, and are used for pumping and discharging sewage in construction, agricultural irrigation, and enterprise processes. In addition to transporting sewage, they are also suitable for use as drainage pumps, pulp pumps, irrigation, and can be used for clean water and weakly corrosive media. Now let me introduce the characteristics and maintenance methods of vertical sewage pumps.

1, Characteristics of pipeline sewage pump products

(1) Strong sewage discharge capacity and no blockage.

(2) Reasonable design, small matching motor power, significant energy-saving effect.

(3) Adopting wear-resistant mechanical seals.

(4) Compact structure, easy to move, simple installation, no need to build a pump room, reducing project costs.

(5) Capable of operating within the full head range while ensuring that the motor does not overload.

(6) The centerline of the inlet and outlet are aligned and can be directly installed anywhere in the pipeline.

2, Maintenance and upkeep of sewage pumps

(1) Check for any looseness in the sewage pump pipeline and joints. Rotate the sewage pump by hand to see if it is flexible.

(2) Add bearing lubricating oil into the bearing body, and observe that the oil level is at the centerline of the oil gauge. The lubricating oil should be replaced or replenished in a timely manner.

(3) Unscrew the water inlet plug of the sewage pump body and inject water (or slurry). Self suction sewage pump.

(4) Close the gate valve, outlet pressure gauge, and inlet vacuum gauge of the water outlet pipeline.

(5) Tap the motor and try to see if the motor direction is correct.

(6) Start the motor, when the sewage pump is running normally, open the outlet pressure gauge and the inlet vacuum pump to see if they display appropriate pressure, gradually open the gate valve, and check the motor load condition at the same time.

(7) Try to control the flow rate and head of the sewage pump within the range indicated on the label as much as possible to ensure that the sewage pump operates at the highest efficiency point, in order to achieve the maximum energy-saving effect.

(8) During the operation of the sewage pump, the bearing temperature should not exceed 35C of the ambient temperature, and the maximum temperature should not exceed 80C.

(9) If any abnormal noise is found in the sewage pump, it should be stopped immediately to check the cause.

(10) When the sewage pump needs to be stopped, first close the gate valve and pressure gauge, and then stop the motor.

(11) During the first month of operation of the sewage pump, the lubricating oil should be replaced after 100 hours, and then every 500 hours thereafter.

(12) Regularly adjust the packing gland to ensure normal dripping inside the packing chamber (preferably in droplets).

(13) Regularly check the wear of the shaft sleeve, and replace it promptly if there is significant wear.

(14) When the sewage pump is used in the cold winter season, after parking, the drain plug at the bottom of the pump body should be unscrewed to drain the medium completely. Prevent frost cracking.

(15) If the sewage pump is not in use for a long time, it is necessary to disassemble the entire pump, dry off the water, and apply grease to the rotating parts and joints before installation.