Coherent Purelight owners?

[DanielS]

I need some info about my new (old) Purelight laser.
I want to run it at home (you all want to do this I assume!) and was wondering what sort of Phase converter or generator I would need. I had it working last week at work but must fire it up at home.
.
Can this be done for hundreds of pounds rather than thousands? I know these old gas lasers draw a fair few amps but how much exactly?
There are some more pictures in my gallery...
Any info would be welcome!

[Jem]

Hi Daniel

And welcome to Photonlexicon

That's a nice laser, and I have no doubt some our 'gas guru's' will be along shortly to offer advice. Rest assured that you're in the right place for support.

In the meantime, would it be possible to fill out your approximate location in your profile? It would also be of interest to members here to hear a little bit about what got you into lasers and how long you've been under the influence of the 'coherent light bug'.

Regards

Jem

[steve-o]

I'm not a guru, but info will probably be needed: 208-240V? Single or 3 phase etc ..

[DanielS]

Hi thanks for your replys. I have a transformer that produces the 208V (very heavy) and then a separate unit that pumps the water (not closed loop).I assume the transformer needs the 3 Ph supply and then that plugs into the other , smaller unit (this has a power key etc)- and then the laser plugs into that for power and cooling....

[Stoney3K]

Can you post some more photos of the units you have and the connections they have on the panel?

You should at least have the laser head (pictured) and the power supply, which connect together using an umbilical cable.

Aside from that, there could be a 400V->208V 3~ step down transformer for use in Europe, which should connect to the power supply. A circulation pump was an option offered by Coherent (as far as I know) if you can't find a good source of water pressure and flow.

You will need to ask Steve (Mixedgas) for the correct operating procedures on these Coherent heads. He can tell you what the right voltages, currents, temperatures and water pressure/flow rate are for this laser to work correctly. Drop him a PM, he's usually quick to reply.

[mixedgas]

I'm at work, but we have a I70 here that uses the same PSU.

So data is 190 to 260 volts VAC 50 or 60 Hz, 3 Phase with ground. 35 amps per phase.

In reality US line voltages are 208 to 220 +/- 5 %

May be wye or delta connected, with the fourth wire, (green) to building ground. There is no neutral.

minimum 1.41Kg/Cm^2 pressure (20 PSI ) maximum 4.23 kg/cm^2 (60 psi)
minimum 10'C, maximum 35' C

external input connector on ones that have a terminal strip TB1, is pins 9 and 10

If you email coherent, with the head and psu serial number, they will send you a PDf of the manual.
'
YOU REALLY WANT TO READ CHAPTER 4 BEFORE BEGINNING!
This power suppy is phase fired SCR, meaning it is not too fond of phase converters, and will NOT run single phase.

Please be careful, High voltage!

Steve

[White-Light]

Steve I wonder how he can do this at home then as UK mains supplies are 13 amps only.

[danielbriggs]

Steve I wonder how he can do this at home then as UK mains supplies are 13 amps only.

Are you serious?

[tonyaztec]

UK mains supplies are 13 amps only.

Maybe if you plug into the local street light perhaps, most will have 80 - 100 Amp supplies.

[smogthemog]

Oh my giddy Aunt!

Iv'e often wondered why my cooker melted that 13A wall socket I plugged it into!
I had hell of a job getting a 13A plug on the end of that 10mm T&E

I ended up using my 200A stick welder to weld it on!