Chromatography Forum

Hi all. I am ready to try again on getting a refurb 6890-5973. This time I am going with a reputable refurb company. The only thing is it is a 220V system. I know I will need to get a 220V rough pump if I want to plug it into the MSD. Are there any other concerns. Can it plug into a standard outlet?

I believe there are several types of 220 VAC plugs and receptacles, you'll need your electrician or someone to make sure to match up to a correct receptacle. So you might need to swap out the plug or the receptacle, I'd wait until it arrives on site. Then you might need a quick trip to Lowe's, H Depot, or Ace, unless you have an electrician on-site.

If the system is a 220 V system, you will need a 220 V outlet for the system. If the system is originally from Europe, you may even need 220 V outlets for the computer and accesories. Get the installation guide. Typically in the US a "220 V" outet is acutually 208 V (but, if I reall correctly, measure 220 peak to peak). Some 220 V systems can run on 209 V while others require a step up transformer to bring the ine voltage up to 220 V (RMS).

Follow Don's advice. A lot of the older instruments required 220 for the MS. You do need a buck/boost transformer to bring the normal 208 volts up to 220 because of the turbo or diffusion pumps that are running off the internal power. As far as the much pump is concerned, most have internal jumpers so you can run them on 110 or 220. If you decide to plug it into the wall outlet, make sure it's on the same circuit the MS is on. If it isn't and you lose power to the pump and not the MS, you will back stream.

The computer we are providing. Do the Edwards E2M1.5's have the internal jumpers? Agilent has 2 different part numbers for both Pfiefer Duo's and Edwards E2M1.5's one for 110 and one for 220.

The electrician want to know if it is single phase or three phase?

I found the siteprep checklist for the 5973. It seems to indicate that 208V-WYE is perfectly acceptable on page 25.

http://www.chem.agilent.com/Library/use ... 035252.pdf

Interesting according to the preplist the GC and MSD itself can run on 120 or 220/208 without reconfiguration. However, the diff and foreline pump have to match the voltage range that is being supplied to the MSD. It looks like the GC can run on either as well though not sure about the 7673/g1512a ALS.

It looks like the exception is a fast heat 6890 oven 208 can't work for it. Hmm according to the 6890 manual
http://www.chem.agilent.com/Library/Sup ... a16012.pdf
it needs to be specific to that particular GC.

feh it's all so bloody confusing.

Many European 220V requirements are single phase to Neutral, as opposed to US where you tend to find 220V (or 240V) measured peak phase to phase. This in not your home washer/dryer setup (2 x 120V) rather a true (usually 13-15A) single phase 220 (or 240V) setup. Have your house electrian (or hire a licensed one) to check and match to installation requirements.

If you have the 208 available you definitely want to run the GC on it - you'll get substantially faster heating rates. Since it's a '73, the pump is small and won't make a lot of difference, but the GC will pull fewer amps (which is actually what you pay for).

It's all single phase. Make sure you are running off of a single phase box, and not a three phase. If you're running off a 3 phase box make sure you get the phases correct when the plug is wired!! Many electricians do not know how to do this.

Also, if you can, upgrade the E2M1.5 - it's just too small. Get a real rough pump.

Yep Gentech recommended an E2M2 so that's what i'm going with.

I thought it might be too powerful to plug into the back of the MSD so I just got an E2M1.5 for my 5975. It seems to be identical to the Pfiefer Duo (that I hate) in terms of the final vacuum reading and how long it takes to pump down.