Shop compressor

[tomlad]

Hi.
Been considering a bigger compressor, poss 3 ph
Seen this locally , probably 1 mile away.
I have shook on it so bit late asking I know.
Looks basically same as this

Azenda B46-300 Piston Compressor on Auction Now at Apex Auctions (US)

Capacity 40 cfm, Input 415/3/50 ac 7.5 kW, Mounted On 50" x 18" Dia. / 1270mm x 457mm Air Receiver Site address:161 Barkby RoadLeicesterLeicestershireLE4 9LX

www.apexauctions.com

300 ltr Tank, think motor was 14 amp ? Biggest compressor I've seen any how
Ran up well. Chap said it doesn't switch of when at pressure, revs drop ,motor speed _ load dropps untill uve used the air then back to full pump. Sounds right??
We're thinking it's set up so the motor doesn't have to try starting wen cylinder is pressured. ?????

Happy thoughts please because I probably own it now.

To be delivered in few days

Stamped. B46 -300. On side.

 

[Stock]

it is fitted with a pressure switch but it is probably broken................................................................................

 

[tomlad]

Ahh screen shot from market place listing, i forgot to photo
Obviously be alot wiser when its home and my sparkys done his bit ,ive no 3ph sockets yet .
Find out if it was a wise purchase or not , didn't seem dear but possibly for a reason

 

[David.]

Looks like a Shiremoor/sylbo my guess is the man's insurance want to see a current test cert, and he has taken the easy option of just buying a new one?
Fit a new pressure switch for your own safety, your ears will ring if the cylinder splits.

 

[tomlad]

Do we think motor should cut out at pressure ( switch off ) dump the bit between pump and cylinder then restart at set pressure drop . Like my current 240v one does ??

Something like " cut in 120 lb "
Cut out 160 lb written on side in sharpy .

I plan pump to go in a separate room to main shop , so by its self.
Hopefully it will power the blast cabinet i bought while back.

 

[suffolksmallholder]

Hi.
Been considering a bigger compressor, poss 3 ph
Seen this locally , probably 1 mile away.
I have shook on it so bit late asking I know.
Looks basically same as this

Azenda B46-300 Piston Compressor on Auction Now at Apex Auctions (US)

Capacity 40 cfm, Input 415/3/50 ac 7.5 kW, Mounted On 50" x 18" Dia. / 1270mm x 457mm Air Receiver Site address:161 Barkby RoadLeicesterLeicestershireLE4 9LX

www.apexauctions.com

300 ltr Tank, think motor was 14 amp ? Biggest compressor I've seen any how
Ran up well. Chap said it doesn't switch of when at pressure, revs drop ,motor speed _ load dropps untill uve used the air then back to full pump. Sounds right??
We're thinking it's set up so the motor doesn't have to try starting wen cylinder is pressured. ?????

Happy thoughts please because I probably own it now.

To be delivered in few days

Stamped. B46 -300. On side.

I bought a road tow 100CFM 3 cylinder Deutz powered compressor after selling my old SIP 20CFM static machine fourteen years ago. With 100CFM you will have enough to dig strainer holes with an Air-spade. Blowing up tyres is easy and you will never be short of fuff ever! Atlas Copco is the way to go. F anything else!
SS

 

[Classichay]

I bought a road tow 100CFM 3 cylinder Deutz powered compressor after selling my old SIP 20CFM static machine fourteen years ago. With 100CFM you will have enough to dig strainer holes with an Air-spade. Blowing up tyres is easy and you will never be short of fuff ever! Atlas Copco is the way to go. F anything else!
SS

Just can’t blow tyres up some guy was killed not long ago with that trick,

 

[suffolksmallholder]

Just can’t blow tyres up some guy was killed not long ago with that trick,

Volume, not pressure.......
SS

 

[Deutzdx3]

What does the motor say kw or hp?
Tank size is irrelevant to its actual output. All to do with motor size. Example, Piston machine, 3hp 14cfm disp fad 9cfm.

This should have a.pressure switch to turn it on and off. Spend £90 and put a Condor on it. You'll never have a problem with it. Cheap eBay ones aren't worth messing with.

 

[tomlad]

Will update when it arrives

 

[Classichay]

Will update when it arrives

Check the vessel safe working pressure plate, pull the drain plug and catch the water will give you an idea of cylinder health, they aren’t overly thick walled it’s the shape that gives them the strength.
Swap your pressure switch out, they’re not dear that compressor should cut out when full, if the motor keeps turning the pressure switch isn’t functioning, doubt it has a perminant unloader valve like a big paint shop compressor has.

 

[tomlad]

I did see a wire going to a air line from pump to cylinder, presumably electrical pressure sensor which i haven't seen on the other compressors ive messed with .
Also the standard black plastic box with twist on ,off switch.
Ive a old selarc petrol unit on wheels, that goes decompressed at pressure, till you've used the air .
But that style is exactly how the guy described its function, motor always runs , he got it in a deal about 1 year ago from local garage.
Always taking a punt with anything second hand , he was very specific there's nothing wrong to his knowledge, basically 5th farm down neighbour, so hopefully bit of trust.
Obviously more photos wen its here, i cant plug it in , 5 pin round plug till my spark finished .

 

[Highland Mule]

Bear in mind that over a certain volume x pressure you need to have formal inspections done. I think it's 250 bar-litres, but check with your insurer - it's a bit like a LOLER inspection but for pressure vessels. PSSR Regulations, if you want to do some reading.

 

[Netherfield]

That is the on/off switch, pressure switch and unloader valve, take the top off and there will be an adjuster inside to set the max pressure.

 

[tomlad]

Ok bin delivered
Even bigger than i remember
Has a pressure switch just like on my other compressors.
Also a gizmo on the pump outlet before the tank check valve which links back on a wire not a air line as on my others .
Must be a relay in the white switch box ?
Im thinking more she should switch off as ur advising.
I have no socket till weekend at very best to power up.

 

[tomlad]

Ok
I now have a 3 ph socket
Plugged in ,quickly builds pressure until the blowoff valve by the solenoid blows.
Seems nothing will turn of the motor.

Hadn't spotted the little plastic 90* push fit underneath the pressure switch black box before. So i believe there should be a line back from there to the blanking plug on the 90* check valve as on other compressors.
The innards of the check valve are brocken , rubber disc has degraded so valve isn't working.
Far as i know my local compressors shop is going to be salarc batemans , presuming there still trading.

 

[Netherfield]

Where does the wire from the solenoid go to?

 

[tomlad]

Good question
Atm into the control box with the start delta gear
I haven't explored the solenoid yet .
Found by unscrew adjuster in pressure box 7 turns it switchs off at 130 lb .8 turns undone was 120lb .
Not had time to play today.
If check valve is mended and solenoid dumps i may be sorted eh
Would seem blow off by check,v , either is too low or faulty. Blowing about 130,140 ,

 

[tomlad]

Update
Cut a rubber pastel for the nrv it now works , dont think rubber will last with the heat but works atm..
If the solenoid had 240 v it works , its little filter blocked, ive cleaned it now so theoretically little hiss on shutdown .to dump pressure, nrv - pump .

We dont think the motor is switching to delta , i learning about all this stuff so bear with ..
Is running in star , can see the contactor close , timer is trying for split second, every 10 /14 seconds, not exactly what dail says but probably close .
I dont know why its not switching to delta , motor man hopefully bob in end of week...

Does the contractor unit itself energise contractor closed or is it missing a bit on top as other two are taller
I believe red button is motor trip , protector
On delay dial the delay between star and delta .

I was aware that the motor was coughing but hadn't realised it was trying to switch over, motor man says dont run it ull damage it.
Also explains why im not hearing the motor pitch change.
I believe the dump solenoid with be powered when in delta , i think .

 

[tomlad]