Beckman Coulter J2-21 ForumsSign in to Start a DiscussionStart a Discussion Fri Apr 30 2021Asked bytrong.ha a contactor in the back panel is tripping. unit won't start Thu May 25 2017Updated byMSLAB Beckman J2 21 Tue Jan 10 2017Updated bydpkleessr Power turns on and off Wed Sep 14 2016Updated bydpkleessr Calibrating the Beckman Coulter J2-21 Centrifuge Refrigeration ? Sat Aug 06 2016Asked bymaksprs centrifuge is switched off Fri Jul 28 2017Updated bydpkleessr Overtemp Light on constantly Mon Mar 14 2016Updated bydpkleessr J2-21 starts only when just switched on in the morning Thu Mar 10 2016Updated bydpkleessr J2-21 will start only at beginning of the day Wed Dec 23 2015Updated bydpkleessr vacuum pump is not running but unit still run Sat Dec 05 2015Updated bydpkleessr compressor shut off then over temp comes on Page 1 of 4 1234Ask a QuestionStart a Post: Beckman Coulter - J2-21SubjectEnter a question about troubleshooting, PM, buying advice and moreā¦ Sign in to Submit your DiscussionSubmit your Discussion