Sorvall - RC-5C
by Sorvall

Sorvall RC-5C Forums

Updated  Jul 20 2017
9 Replies

I'm having intermittent failure on the temperature control. Sometimes it sticks on and cools the rotor to -18 degrees, sometimes during runs if fails to kick on the compressor and the temperature goes up to the limit and shuts the run down. Is there a relay that might be stuck or would this be a faulty temperature sensor? There are 2 sensors, one for air and one for the chamber temperature. Thank you.

RE: Sorvall - RC-5C
0 Replies

Does the above condititon pretty much gurarantee a tachometer problem.

 Thanks don

RE: Sorvall - RC-5C
Updated  Feb 6 2016
5 Replies

We have a Sorvall RC-5C that was in need of replacement brushes. Eventually the machine threw a fault 4 and wouldn't start. After replacing the brushes and resetting the machine, it ran fine for a few days until I noticed the machine could only reach ~11,000 RPM with an SS-34 rotor. I found one thread where a user suggested resetting the brush circuit breakers, however, I have been unable to locate them behind the front cover (post #21 http://www.labwrench.com/?community.posts/threadNo/12297/subject/Sorvall-RC-5B-centrifuge-won-t-start--seeking-service-manual---schematic/). I assume these are the breaker switches (http://www.labequipmentparts.com/product_images/20747.jpg)?  As for additional information, this particular board (http://www.labequipmentparts.com/product_images/50710.jpg) shows a number of solid red LEDs as the machine runs, however the LED for the motor is flashing while doing so. Thanks in advance for any help.

RE: Sorvall - RC-5C
7 Replies

Receiving Error Codes 8 & 9 on Sorvall RC-5C centrifuge. Currently, compressor cycles on and off. Will not stay on and provides error codes. Sometimes 8, sometimes 9. We checked refrigeration coolent  level and added some coolent. It was a little low. It is cooling OK when we are able to get compressor to run long enough.  Did not fix problem. Don't have the service manual.

Question: How to test the temperature sensors? Both the air and chamber wall.

Question: How to determine if its the refrigeration circuit board? If circuit board, is it typically the relay or resistor?

Thanks.

Tom

 

RE: Sorvall - RC-5C

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