Discussion Category: Centrifuge
Calibrating the Beckman Coulter J2-21 Centrifuge Refrigeration ?
Hi
Is there a procedure to Calibrate the Beckman Coulter J2-21, analog meter type of Centrifuge, not digital Refrigeration system.
Reason is that the centrifuge is cooling approximatly 8 to 9 degrees past its set point. The Freon valve & compressor turn off normaly when the black pointer reaches, or passes the green set point pointer displayed on the front temperature meter. I Verifed this by using a second temperature probe, the Temperature meter reports the correct inside chamber temperature. Alternatly I am not even sure which board located at the back inside is the temperature control board. If someone knows could you help me identify the board, cal procedure for this sympthom I would appreciate it.
Thanks, Wayne