Compresser blowing fuse

[qwakers]

they do if its the same as mine which it looks to be...

instructions attached.

 

[knighty]

the 2 screws, the higher up one is the cut off pressure, the lower one is the cut in

screw the higher up one in a few turns, run the compressor.... when it gets to the pressure you want it at screw that screw back out until the compressor cuts off
(120psi is normal in my experience )

then let air out till it's where you'd like it to cut in (90 normal for most people) and screw the screw in till the compressor cuts in

you having a screw driver on the screw puts pressure on it and can throw it out a little bit... so run the compressor up to pressure and let air out a few times, see where it's stopping/starting and adjust the screws a bit more if it needs it :-)

 

[angellonewolf]

thankyou all for that i can have a play over the weekend see what i can do

 

[dave h 2]

3HP compressors plated @ 14A typically start off load @ 25A+ and drop to 10A when up to speed (like mine does) the fuse takes no notice of the spike, but MCB do hence the various levels of operational delay available to ignore inrush current. If you have an old school analogue clamp meter you have more chance of seeing the spike. It's a very short duration.

The start circuit takes a beating on compressors hence yours failing, you don't want to adjust the restart pressure too high. Looking at Qwakers pdf your restart @ 3.5Bar is correct.

You can check the tank nonreturn for leaks by filling it and tying a rubber glove over the intake, if it blows up you need a new one, same for the outlet tap. That only leaves the tank drain which can get rust in it and the regulator.

 

[angellonewolf]

3HP compressors plated @ 14A typically start off load @ 25A+ and drop to 10A when up to speed (like mine does) the fuse takes no notice of the spike, but MCB do hence the various levels of operational delay available to ignore inrush current. If you have an old school analogue clamp meter you have more chance of seeing the spike. It's a very short duration.

The start circuit takes a beating on compressors hence yours failing, you don't want to adjust the restart pressure too high. Looking at Qwakers pdf your restart @ 3.5Bar is correct.

You can check the tank nonreturn for leaks by filling it and tying a rubber glove over the intake, if it blows up you need a new one, same for the outlet tap. That only leaves the tank drain which can get rust in it and the regulator.

sod it ajusted it and got it to 5,5 restart then 8bar stop will have to reajust it again