help with atlas copco compressor

[paul441]

hi
anyone help us us with atlas GX5aircompressor,seems to be running ok when on site pressure switch opperating off 10 bar on 8 bar seems ok what happens is customer says unit runs and will suddenly show no pressure and staysoff for few hours and just starts again , nobody touching unit and no high temp warning light coming on.

cheers

[The Viking]

Internal clixon?
Start or cycling limiter?
Problems with power supply?

[dorinspeedy]

What type of controller its on compressor, Elektrinikon or is a standard one? If its Elektronikon, maybe someone has activated timer function. More info needed for diagnostic.

[glenn1340]

As dorinspeedy says it could be the elektronikon or is there a remote controller with a timer, BMS etc.

[anish.sheorayan]

If its GX series than it must be having mechanical pressure switch instead of electonikon, here either your pressure switch is malfunctioning, means its not giving on command (control voltage ) to coil or may be your solenoid coil plunger is stucking, If your pressure switch and solenoid coil plunger are OK than there must be some leakage ( some exhaust valve stucking) in air line, which you have to check thoroughly.