Alfamacchine underpinner MC

[misterdiy]

I have one of these and it works fine, but I am wanting to upgrade my compressed air supply to cater for this and a few air tools. My CMC is run from a separate compressor.

On the instruction booklet the air requirement is stated as "4Nl@5bar". Now I know that Nl is normal litres and 5 bar is around 70psi, but the missing bit of information is the time value. Is the Nl per second of per minute? It makes a considerable difference to compressor choice.

Any advice would be much appreciated.

Steve

[stcstc]

my understanding is the norm is l/min

[misterdiy]

I thought that as well. Most of the air compressor manufacturers are quoting FAD in litres/min, but my compressor has a 50 litre tank but is incapable of pinning two pins/corner for a complete frame without kicking in. I know my compressor is knackered and leaks but it just makes me wonder if its litres/second. If it was 4 litres/minute it would necessarily be a very small compressor...... which is great, but I don't need to undersize it.

[stcstc]

its not that your compressor tank is full of water ?

that doesnt sound right

i have a 50L bambi, it runs cmc, air gun, cassese 199xl, and doesnt kick in that quick

[misterdiy]

I drain the compressor every week and to be honest there isnt a lot of water in it. My compressor is a 50/100 bambi which sounds similar to yours, but the fact that you run all those tools from your compressor gives me heart that it is 4Nl/min.

Thanks for all your help Steve

[JohnMcafee]

Why not attend to your leaky system?

To detect leaks, use a paintbrush to apply soapy water to the joints in your airline, or any place where you think air might be escaping, and watch for bubbles.

[misterdiy]

Thanks John, but the leaks are actually on the compressor itself and come from around the pot. There comes a time, like most cars, when its time to replace rather than try to repair. The compressor has other "issues" which make me think its time to change it.

[misterdiy]

I found out on friday that the "4Nl" refers to per cycle rather than per minute or per second. This makes the average consumption for a frame with 8 wedges 32litres, which soon drains a tank.

Looks like I need a pretty big compressor after all

Thanks for your help guys