Compressor Does Not Run:

Check the power for voltage and amperage on all 3 legs

Reset any safeties either mechanically or through the control panel

Determine if the motor or the compressor head/airend will turn freely

Check oil level as some units have low oil level device

Ensure that no one has hit the emergency stop

Compressor Runs But Will Not Make Pressure:

Pressure Control Issue – mechanical systems check solenoid valves/pneumatic controller for operation. PLC controls see operators manual for pressure reset/troubleshooting.

Separator – clogged or collapsed causing pressure drop internally in the machine with little or no pressure coming from the discharge – rotary issue only. Shows up in no or extremely high pressure drop across the separator either on the gauges or in the panel. Change separator.

Internal Hose Or Tubing Blockage – many new machines have eliminated hoses for this reason. Compressor will not load. Primarily a rotary issue.

Broken Check Valve – jammed in closed position preventing pressure from leaving pump head or rotary compressor package. Compressor short cycles or shows internal pressure.

Clogged Inlet Filter – remove inlet filter and determine if compressor will load. In an emergency clean filter, but must be replaced.

Compressor Runs and Makes Minimal Pressure To Plant:

System Valves – air piping valve in an incorrect position causing restriction. Check all valves.

Faulty Auto Drain – open drain valve with outlet to outside causing pressure drop. Check all drain valve discharge points.

Filters – heavily contaminated or collapsed line filter. Check all filters for pressure drop. If no pressure drop indicators, determine where the pressure drop issue is by using a gauge in the system. Remove filter element and replace when new element available.

Dryer – refrigerated dryer frozen causing restriction. Determined by using gauges on either side of the dryer. If frozen turn off and allowed air out. Run system on dryer bypass.