Jouan C3i: Difference between revisions

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== Centrifuge from imperial ==
{{EquipmentInfobox
|name=Centrifuge 10,000RPM
|image=P1010147.JPG
|model=Jouan C3i
|category=Equipment
|subcat=Biohacking
|status=Good working order
|reqtraining=yes
|acnode=no
|origin=Imperial College
|location=Basement, Biohacking lab
|maintainers=Biohackers
}}


Currently broken. We'd like to fix it.
The Jouan C3i is a laboratory centrifuge located in the first cupboard in the biolab.


[[user:mentar|Eugene]] had a look at it. What we know:
It has capacity for 6 x 50mL falcon tubes, and has a maximum speed of 10,000 rpm.


* It switches on but won't spin
The lid has an interlock requiring it to be powered on to access the rotor cups.
* Motor is ok
 
* Problem is with the electronics
This equipment requires an induction if you do not have normal experience with these types of centrifuge.
* 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


[[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
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.

Latest revision as of 20:55, 15 December 2014

Centrifuge 10,000RPM
P1010147.JPG
Model Jouan C3i
Sub-category Biohacking
Status Good working order
Training requirement yes
ACnode no
Origin Imperial College
Location Basement, Biohacking lab
Maintainers Biohackers

The Jouan C3i is a laboratory centrifuge located in the first cupboard in the biolab.

It has capacity for 6 x 50mL falcon tubes, and has a maximum speed of 10,000 rpm.

The lid has an interlock requiring it to be powered on to access the rotor cups.

This equipment requires an induction if you do not have normal experience with these types of centrifuge.

http://www.frankshospitalworkshop.com/equipment/documents/centrifuges/service_manuals/Jouan_CR3i_-_Service_manual.pdf

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