Fault and Handling of Gear Pump

1. The pump is difficult to suction liquid
reason
The motor does not rotate
Electric motor reversal
Medium viscosity too high
The suction height exceeds the allowable range
Air leakage or blockage in the suction pipeline

Solution
Check the power supply, wiring, and motor
Adjusting the phase sequence of the motor
Lower the temperature of the medium
Reduce suction height
Check the suction pipeline and eliminate any leaks or blockages

2. Low traffic
reason
The safety valve is damaged or calibrated too low
Gear and pump sleeve wear
Insufficient motor speed

Solution
Re calibrate the safety valve to meet the design requirements. If damaged, replace or repair
Replace relevant components
Determine whether the rated speed of the motor meets the design requirements, and check whether the electrical voltage meets the motor requirements

3. Machine seal oil leakage
reason
Incorrect assembly position
Sealing gland not flattened
Mechanical seal damage

Solution
Reassemble according to technical requirements
Adjusting the sealing gland
Replacing mechanical seals

4. The pump body temperature is too high
reason
Medium temperature too high
Mechanical seal oil return hole blockage

Solution
Take necessary measures to reduce the temperature of the medium
Clearing the oil return hole

5. Pump overload operation
reason
Eliminate pipeline blockage
Medium viscosity too high

Solution
Stop the pump and unclog the discharge pipeline
Heat up the medium appropriately

6. Severe pump vibration
reason
Installation height too high, causing cavitation inside the pump
There is air inside the pump
The pump and motor are not concentric

Solution
Reduce installation height
Check the suction pipeline and eliminate any leaks
Adjust position and realign