Compressor problem

[Deleted member 3568]

Hi all my compressor has developed a bad habit.


When the pressure gets low it tries to start but just seems to hang, if I release all the pressure it will start fine and pressurise fully but when I start spraying and the pressure drops it just hangs when trying to repressurise, empty tank and all's fine again till pressure drops. What's happening, is it a pressure regulator gone or something.

 

[dubster72]

Ken, what compressor have you got? If it's a Chinese one like the AS 186, these are a few things to check:


If the compressor clicks off automatically, the pressure sensor is fine.


Most compressors don't like back pressure, so check the one-way valve as shown below


View attachment 109630



The white bit is the valve - it's not strictly a valve, but a cheap fix used in such compressors.

 

[dougie]

Sounds like a back pressure issue as above, it's struggling to overcome pressure inside the system downstream of the piston, maybe the motor brushes are wearing out, maybe its a lubrication issue? Something is restricting it from overcoming that pressure


Check simple things like the one way valve first haha

 

[Deleted member 3568]

Thanks it is the as 186 but can't say I remember seeing anything like the thing in the picture, where is it, underneath Maybe?

 

[dubster72]

Nope,it's under the piston housing.


Here's some pictures that I took when Monica had a similar problem


View attachment 109645

View attachment 109646

View attachment 109648



If it is that bit, I can provide a replacement for the cost of p & p because I've switched to a fridge type compressor &

View attachment 109647

 

[Deleted member 3568]

Thanks, well I've taken that bit off and it seems ok.