oem грязный насос
The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high
The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high
Cleaning method:
Open valve or desilting
Improved design of suction lines or desilting
Lower mounting height
Cleaning method:
Open valve or desilting
Improved design of suction lines or desilting
Lower mounting height