here is a lower power version of the same unit..
http://www.ebay.co.uk/itm/171324428554?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
http://www.ebay.co.uk/itm/171324428554?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
- Thread starter Hood
- Start date
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
And the procons were made precisely for that job.
Beautifully built with lovely fine pressure adjustment you'll be hard pushed to find a better pump for the job than a sliding vane pump and motor.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
As said mine doesn't have a protruding shaft, see pic. Could be done by making a shaft up and a housing, would need bearings etc so much easier to just bolt a fan on the outside of the cooler I have now as it already has a place for a fan, see second pic.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
That's the same pump the guys were using. Another member built his cooler using one and it's still going.
Down the pressure a bit still and if you can supply it 12vdc then it will do the job.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
That is the one I had, way over 100PSI when I tried it so as mentioned had to reduce by diverting some of the water.
Originally I used the screw on the end to reduce the pressure, basically it is a limit switch that cuts the motors power when a set pressure is reached. With doing it that way however the motor got extremely hot in a short space of time.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
Your torch was blocked at the time. This will cause the pressure to build up higher than normal and cause the poor little motor to be overworked and get hot.
Bet you if you tried it now the pressure would read lower, the motor would run cooler and the flow rate obviously will be higher.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
As I have said I have no doubts it would work fine now but I don't think it would drop the pressure that much. Reason I say that is the Procon pressure was set at 60 with the blockage, remove the blockage and it dropped to 50 (initially said 55 but I can't read a gauge
)When I used the diverter valve to drop the pressure the motor was fine regarding the temp and when I ran it direct off of 5v it was also fine, just the flow was too low but might be ok on 5v now without the blockage. Where the heat issue came in was when I was using the screw adjuster on the pump to reduce the pressure, the motor was constantly getting switched On/Off and it was the constant Stop/Start of the motor that was producing the heat, removing the blockage would have made little difference to that I would think.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
You'll only need one fan for the exchanger. Can't imagine that motor is going to get that hot personally.
Hope you make your tank out of nice Alu or stainless seen as you've made a couple tanks now.
You can power that motor from a cheap eBay switching 12v power supply. Just make sure it's over rated for it.
Make sure you put your build progress up on the forum too.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
This is the one I got.
http://www.ebay.co.uk/itm/291619696905?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
As said doesn't get overly hot unless you use the screw on the end of the pump to reduce the pressure, when using that it cuts the power to the motor until the pressure drops then connects it again and by doing that the motor is constantly drawing a heavy starting current and so builds up the heat. If you use a diverter valve it will allow you to keep the motor on constantly but keep the pressure to 50 or so PSI and should give you enough flow. I think now I have the blockage out of my torch even running it on 5v would give enough flow and no need for a diverter as the pressure will be lower.
On 12v the pump is quite noisy, on 5v it is quiet.
http://www.ebay.co.uk/itm/291619696905?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
As said doesn't get overly hot unless you use the screw on the end of the pump to reduce the pressure, when using that it cuts the power to the motor until the pressure drops then connects it again and by doing that the motor is constantly drawing a heavy starting current and so builds up the heat. If you use a diverter valve it will allow you to keep the motor on constantly but keep the pressure to 50 or so PSI and should give you enough flow. I think now I have the blockage out of my torch even running it on 5v would give enough flow and no need for a diverter as the pressure will be lower.
On 12v the pump is quite noisy, on 5v it is quiet.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
Sounds interesting stuff Giz. Look forward to seeing it.
It's long overdue mate. Once you've gone water cooled you'll wonder how you ever got on without it.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
Ok temporary test setup in the old cooler tank with fan fitted on the outside. I can not place the motor fully into the fans airflow as the tanks output is behind the motor but it is about 2/3 in the airflow.
So first pic showing before I start, only had one temp gauge with probe on motor but as can just about be seen temp of motor is 20.5 degrees.
Second pic shows it after running for about 1.5hrs, motor is now 52.8 degrees and has been sitting at that for over an hour so seems constant at that. I also placed a probe into a hole in the pump, temp is 21.1 degrees so basically it has stayed the same as the motor was before it was started, looks like the fan is stopping the pump from getting heated by the motor.
So first pic showing before I start, only had one temp gauge with probe on motor but as can just about be seen temp of motor is 20.5 degrees.
Second pic shows it after running for about 1.5hrs, motor is now 52.8 degrees and has been sitting at that for over an hour so seems constant at that. I also placed a probe into a hole in the pump, temp is 21.1 degrees so basically it has stayed the same as the motor was before it was started, looks like the fan is stopping the pump from getting heated by the motor.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
It appears to be doing the job mate.
Hood
I am obsessed.
- Messages
- 17,335
- Location
- Carnoustie, Scotland
Ok another hour has passed and the temps have risen slightly but nothing to speak of, only a few degrees and that is likely because I have put the house heating on
Also damped the gauge with some mole grips because it was the noisiest part of the whole setup Will have to put a valve in the line to the gauge when I make it, just to damp it.
Better go take the dog a walk so will shut it down now but I am satisfied it is working well and will do the job, next thing will be for me to do some welding with it to see whether the volume of water will be enough to keep things cool or whether I will need a radiator.
Also damped the gauge with some mole grips because it was the noisiest part of the whole setup
Will have to put a valve in the line to the gauge when I make it, just to damp it.Better go take the dog a walk so will shut it down now but I am satisfied it is working well and will do the job, next thing will be for me to do some welding with it to see whether the volume of water will be enough to keep things cool or whether I will need a radiator.
For sure. Fed up of my tungstens splitting. I also need to upgrade the TIG Aswell. Its carried me a long way for sure. But i'm feeling the limitations of my machine now.
It is yes. Ideally something with Pulse. Unfortunately i'm only just keeping my head above the water. so i may have to persevere for a whilst yet.
Richard.
Member
- Messages
- 18,344
- Location
- Cambridgeshire
I'd look at your options sooner rather than later. Borrow if you have too. The reason been as good as that unit has been to you it's still very much a £500 hobby unit designed for switching on once a week for a mess about. It's not an 8 hour a day machine and if it fails I'm assuming your out of work and up the creek.
If I was in your shoes I'd put away what I could and borrow what I could to get a quality machine because if that's your livelyhood then you need to depend on it. Hell mine makes me a few quid on evenings and weekends but it's not putting food on the table yet I still want something to depend on been there to make me some brass.
Ideally you want to be looking in the mid-high end machines and getting hold of something sharp. At least then you will always have peace of mind because you've got the Eastwood as a back up if you have to take advantage of a warranty claim. Small business loan perhaps??
