What are the common faults of fuel dispensers

Fuel dispensers may encounter various malfunctions during use, which can be caused by multiple reasons. Here are some common fuel dispenser malfunctions and their possible causes:

Firstly, unable to start or stop working

Power supply issues: such as broken power cords, faulty power sockets, etc., causing the fuel dispenser to be unable to receive power supply.

Control system malfunction: such as circuit breaker tripping, relay failure, etc., affecting the normal operation of the fuel dispenser.

Electric pump malfunction: such as motor burnout, pump jamming, etc., causing the fuel dispenser to be unable to extract fuel.

Secondly, inaccurate flow measurement

Flow meter malfunction: such as sensor aging, plunger wear, turbine damage, etc., causing measurement results to deviate.

Environmental factors such as temperature, pressure, and changes in oil products may also affect the accuracy of Flow meters.

Thirdly, the oil output speed is slow or unable to output oil

Blockage of oil pipeline: such as sludge, impurities, etc. blocking the pipeline, affecting the flow of fuel.

Electric pump malfunction: such as insufficient motor power, slow pump speed, etc., leading to a decrease in fuel extraction efficiency.

Fuel tank sealing issue: If the fuel tank is not tightly sealed, it can cause fuel leakage or air to enter, affecting the fuel delivery speed.

Fourth, excessive noise

Electric pump malfunction: such as bearing wear, blade damage, etc., causing unstable mechanical operation and generating noise.

Motor malfunctions, such as worn carbon brushes and damaged stator, can also cause noise problems.

Pipeline resonance or air entering the system: may also cause noise from the fuel dispenser during operation.

Fifth, display screen malfunction

Display screen malfunction: such as damaged LCD screen, backlight not working, etc., resulting in the inability to display refueling information normally.

Control system malfunction: such as broken signal lines, damaged control board, etc., affecting communication between the display screen and other components of the fuel dispenser.

Sixth, accuracy exceeds the tolerance

Sensor damage: such as damage to the dual photoelectric plate (optical slot), resulting in loss of counting pulses and affecting measurement accuracy.

Internal leakage of flow meter: Poor sealing inside the flow meter leads to fuel leakage, affecting measurement accuracy.

Poor oil and gas separation: The oil and gas separator is not working properly, resulting in the presence of gas in the oil, which affects the measurement accuracy.

Motherboard malfunction: Damage to the fuel dispenser computer motherboard may also result in measurement accuracy exceeding the limit.

Seventh, other common faults

Fuel dispenser jump count: It may be caused by oil and gas leakage in the oil pipeline, blockage and poor sealing of the oil outlet valve, arbitrary elongation of the fuel dispenser hose, or replacement of non-standard hoses.

Cannot automatically shut down during quantitative refueling: This may be due to motherboard malfunction or loss of unit price.

Oil discharge from the exhaust pipe of the fuel dispenser: It may be due to a malfunction of the oil-gas separator, damage to the sealing gasket, or other reasons that the oil in the high-pressure chamber enters the normal pressure chamber and is discharged from the exhaust pipe.

For these faults, it is usually necessary to inspect, diagnose, and repair the fuel dispenser. Gas stations should establish a sound fault handling mechanism to promptly detect and solve problems, in order to ensure the normal operation of gas machines and the efficient operation of gas stations. At the same time, regular equipment maintenance and replacement of damaged parts are also important measures to prevent malfunctions.

Wenzhou Jiahao Petroleum Machinery Co, Ltd is a professional manufacturer of petroleum machinery products since 2010. The main products are Fuel dispenser components including Automatic Fuel nozzle, Adblue DEF Nozzle, Vapor Recovery Nozzle, Flowmeter and Fuel pumps.