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Jouan C3i: Difference between revisions
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* Could be to do with the locking mechanism (machine thinks it's not locked when it is and hence won't start) | * Could be to do with the locking mechanism (machine thinks it's not locked when it is and hence won't start) | ||
* It's definitely not that, it went BANG! and blew the fuse | * It's definitely not that, it went BANG! and blew the fuse | ||
[[user:amc|Andy]] had a look at it (2012/07/27): | |||
This appears to be the service manual for it: | |||
http://www.frankshospitalworkshop.com/equipment/documents/centrifuges/service_manuals/Jouan_CR3i_-_Service_manual.pdf | |||
The tachometer works (at low speed), the microswitches on the lid interlock switch on and off and the control electronics and front panel seem to work. | |||
There is a connection diagram for the main board on page 2-11 (page 20 in the pdf linked above). The motor drive is powered directly from the mains, separately to the rest of the main board. | |||
Connector J12 (supplying mains power to the motor drive) is badly damaged and I have removed it. This is a three way Panduit brand IDT connector. I think it is an ITW Pancon brand MAS-CON 3.96mm connector (eg. http://uk.farnell.com/itw-pancon/ce156f22-3-d/wire-board-conn-female-3pos-3-96mm/dp/1418234). | |||
The symptoms I've seen are consistent with the motor drive not getting any power (due to the damaged connector) or being otherwise broken (and hence damaging the connector). | |||
I suggest: | |||
* Step 1: replace J12, either with the same type (if we can find a source) or with another 3.96mm connector of suitable specification. | |||
* Step 2: carefully test the motor drive circuitry. | |||
* Step 3: if the motor drive circuitry appears to work test the whole centrifuge. | |||
