Hey does anyone out there know how to tell what valve you have. Is the number of it on the valve somewhere. Thank you for your feed back.

EXCATLY what valve are you referring to?

any of them. I some valves from the last Biomed that was here and there are no numbers on them and I would like to know how to tell which one's they are. There are some that you can tell that are 27 29 but the rest of them you can't. I would really like to know how to tell which valve's they and if it happens in the future than I would know. Thanks for any suggestions you might have. Biomed also they are going an H machine

You basically have 2 valves - 1 port and 2 port. It's the wiring that makes the difference. If there aren't any numbers on the distribution board connector that is on the end of the blue wires. Well then you need to try reusing the old wire when you change a valve.

For a valve/component schematic check out the machine parts book (www.fmcna.com)

I'am talking about having a valve without the wires and know what valve it is how do you tell what valve it is by looking at it. Biomed

As discussed above, 1 port or two port valves are utilized in the hydrolics and none are numbered valve bodies. Connection left or right at the valve is un-important, check out the valve placement and number of hose connections to each valve in the hydrolic schematic found in the parts book. If you have to replace an distribution board, make sure all your wires are numbered accordingly. And if you know that your correct to this point and the machine does not run correctly. Troubleshoot valve function utilizing your troubleshooting guide (Hint: occassionaly a valve wire breaks at the distribution side connection).

It's been awhile since I've been to the service school and I really don't have many problems with valves. But if I recall correctly there are two different type valves in the 2008k, so there is two different part numbers and I don't think it has to do with whether or not there is one or two ports on it. I thought it had something to do with voltage on why they are different. But if you have a parts book or get to one on line go through the hydraulic section and double check and compare the different numbered valves. I could be mistaken, I've been to quite a few different service schools and I could be mixing up a 2008k with something I learned in the phoenix class. You can also call Fresenius and see if there is a difference with voltages on any valves and if not then the only concern would be whether it has one two ports.

Valves are +24 vdc activated in H & K machines.

quote:

Originally posted by Techmex:
Valves are +24 vdc activated in H & K machines.

And the Phoenix valves.

Hey thanks Techmex, I don't know where that got in my head but it has always been there. Isn't there 2 different part numbers for the fresenius valves though? One for the single port and the other for the dual port?

what about the NORMALY OPEN valves and NORMALY CLOSED valves!!!!!

Well that is what I wanted to know I did find the problem with the machine it was a wire that was broke at the distribution side. Thanks Biomed