Reason analysis: 1, pressure switch improperly set or set after the drift; 2, the inlet valve action is poor; 3, the system stops using gas, such as relief solenoid valve failure, the pressure will slowly rise; 4, control circuit failure.

Elimination methods: 1, overhaul the pressure switch, if necessary, replacement; 2, disassembled and filled with lubricating oil; 3, overhaul, replace the relief solenoid valve; 4, repair or replacement.

keywords：Air compressor repairs   Screw Air Compressor