Advertisement
avatar: sigma2016
sigma2016
31 posts
Replied to sigma2016's post on October 23rd, 2017

We have a Beckman Avanti J-25 which has been working properly until last week. We turned it on last Friday, it started to display the "Driver" error which cannot be cleared by pushing "Clear" button. I can open the door. But the machine sopped working.  Help please!!!

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on November 16th, 2017

If you have not already fixed this issue, what was the drive diagnostic that you received?

Don

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 9th, 2018

Hi Don, we did not fix the issue until now.  The error code is D11.  Now we have no way to run this machine.  Any suggestions?

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 10th, 2018

Hi Don, now I tend to think the D11 error is due to the mismatch in line voltage.  Today I measured the voltage on wall outlet and read 228V.  Then I opened the front cover of the machine and found the white sticker labeling 208V.  Now the question is how I can adjust the transformer taps of the machine to match the actual outlet voltage.  Many thanks. 

Quote dpkleessr

If you have not already fixed this issue, what was the drive diagnostic that you received?

Don

 

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 11th, 2018
I believe that I have previously posted the transformer tapping instructions in the database. Please check it out and if you can't find it get back to me and I will send you the instructions once I get home this evening. An line voltage difference of what you observed will definitely be a problem. Don
avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 11th, 2018

Thank you very much Don! You're saving us.  After searching the whole database, I failed to locate the procedures on how to reset the transformer wiring to match the actual voltage.  So please do us a favor and post the procedures once again.  Many many thanks!  Also we will appreciate it if you can let us know the codes on how to check the working voltage of Avanti J-25 just incase there is no such a sticker on the inside of front door. 

 

Thanks again.

 

Quote dpkleessr

I believe that I have previously posted the transformer tapping instructions in the database. Please check it out and if you can't find it get back to me and I will send you the instructions once I get home this evening. An line voltage difference of what you observed will definitely be a problem. Don

 

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 12th, 2018

For 228 VAC at the wall, the BLACK wire should be on terminal 3.  For a J25, check on the terminal block for the one that is closet to 230VAC with the centrifuge running and accelerating for 30 seconds while calling for cooling.  That is where ALL of  the ORANGE wires for the compressor should be eventually placed.  Also place the PURPLE wire on that same terminal.  After you reset the transformer wiring, make sure to rerun the windage and inertia calibration as those values have likely changed with the new tapping.

Don

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 13th, 2018

Thank you so much Don, you are our hero!!!  I checked the power on wall outlet and yes the black wire was placed on terminal 3.  However with the J25 centrifuge, I understand I need to locate the terminal from the transformer terminal block which measures 230 VAC when the machine is accelerating and cooling.  But I am a bench scientist and have no idea how to measure the transformer output voltage with multimeter because there are so many terminals.  Attached is a picture showing the transformer wiring.  Should I always place the reference probe of multimeter on the back wire while moving another probe to a terminal until it reads 230VAC?  It seems there are three orange wires and one purple wire. If I'm understand you correctly, I need to locate the 230VAC terminal and place all the three orange and one purple wires together.  Correct me if I'm wrong.  The question is which terminal I should place the reference probe on when measuring the voltage.  Forgive me for asking such a stupid question.  This is really not my expretise. 

Jeffrey

 

Quote dpkleessr

For 228 VAC at the wall, the BLACK wire should be on terminal 3.  For a J25, check on the terminal block for the one that is closet to 230VAC with the centrifuge running and accelerating for 30 seconds while calling for cooling.  That is where ALL of  the ORANGE wires for the compressor should be eventually placed.  Also place the PURPLE wire on that same terminal.  After you reset the transformer wiring, make sure to rerun the windage and inertia calibration as those values have likely changed with the new tapping.

Don

 

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 13th, 2018

Actually, you will measure from the WHITE wire on terminal 1.  First, move the BLACK wire to terminal 3.  Next, I would move the ORANGE wires over to where the PURPLE wire is as your starting point.  The important thing about the placement of the ORANGE and PURPLE wire is to get them close to the 230 VAC terminal voltage without going over or not very far over the 230 VAC.

I understand your predicament being a scientist but it really is not that difficult as much as it is a kind of dangerous place to be mucking around.  After moving the ORANGE wires over to the PURPLE wire terminal, place a rotor in the chamber and start a run that will exceed 10K RPM with the temperature set to around 0.  While the rotor is accelerating, the refrigeration should be on and you should measure at each of the terminals INCLUDING the BLACK terminal to find which is closest to 230VAC.  Once you determine the correct terminal and wire placement, make any adjustments to the wiring and try the test run again to make sure it is still correct.  If it is then reinstall the back panel, relevel the centrifuge, and run the windage and inertia calibration using the highest speed rotor that you have.  Get back to me when you can.  By the way, where are you located?

Don

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 13th, 2018

Will do and get back to you.  We are located in Rockville of Maryland, JHU campus.  Thank you so much.

Jeffrey 

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 13th, 2018

I look forward to the outcome of your testing.  I also had to work at your campus MANY years ago although before the Avanti J's were ever released.

Don

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 13th, 2018

Really?  If you get a chacne to visit us again, let me know.  I will be more than hapy to invite you to have a meal.  I do know there is a wonderful restaurant.  Anyway many thanks for your generous help.  

avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 15th, 2018

Thank you Don, I have the last question before I can adjust transformer wiring tomorrow per your instruction.  We have the 2nd Avanti J-25 machine connected with a 210 VAC's power.  My question is how we can adjust transformer wiring to match 210 VAC.  Many thanks.  

Jeffrey

Quote dpkleessr

Actually, you will measure from the WHITE wire on terminal 1.  First, move the BLACK wire to terminal 3.  Next, I would move the ORANGE wires over to where the PURPLE wire is as your starting point.  The important thing about the placement of the ORANGE and PURPLE wire is to get them close to the 230 VAC terminal voltage without going over or not very far over the 230 VAC.

I understand your predicament being a scientist but it really is not that difficult as much as it is a kind of dangerous place to be mucking around.  After moving the ORANGE wires over to the PURPLE wire terminal, place a rotor in the chamber and start a run that will exceed 10K RPM with the temperature set to around 0.  While the rotor is accelerating, the refrigeration should be on and you should measure at each of the terminals INCLUDING the BLACK terminal to find which is closest to 230VAC.  Once you determine the correct terminal and wire placement, make any adjustments to the wiring and try the test run again to make sure it is still correct.  If it is then reinstall the back panel, relevel the centrifuge, and run the windage and inertia calibration using the highest speed rotor that you have.  Get back to me when you can.  By the way, where are you located?

Don

 

avatar: sigma2016
sigma2016
31 posts
Replied to sigma2016's post on January 17th, 2018

Hi Don, yesterday we adjusted the transfromer wiring by putting black wire to terminal 3, orange and purple to terminal 5.  Now the voltage reads from the board behind front panel 224 VAC, 225VAC and 245 VAC.  We will watch if D11 comes back and keep you posted.  Thanks

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 18th, 2018
What is the voltage reading where the ORANGE and PURPLE wires are at? You do NOT want them sitting at anything above 230VAC so if they are on the 245VAC terminal move them immediately or you could burn out your refrigeration compressor. Sorry if I was not more clear on that as I only have you those wiring positions as a first shot. Also, did you redo the windage and inertia calibration following the instructions I posted? Don
avatar: sigma2016
sigma2016
31 posts
Replied to dpkleessr's post on January 18th, 2018

Hi Don, thank you.  The ORANGE and PURPLE terminals read 224 and 225V respectively.  Yes we redid the calibration after rewiring the transformer.  Is something wrong? 

 

avatar: dpkleessr
dpkleessr
857 posts
Replied to sigma2016's post on January 18th, 2018
Nothing wrong. Just concerned when you didn't say which terminal the ORANGE and PURPLE were connected to. Hopefully your issues are over now. Don