Is my Jobo cpe2 dying?

Paul Green · Nov 2, 2010

I went to process a batch of colour film yesterday so set up my Jobo and switched it on the heat the water jacket.
I switched the motor on to make sure all was well and after a few backward and forward rotations the arm slowed down considerably and then sped back up to normal speed, there was also a faint smell of burning. Suffice to say I didnt process anything yesterday.
My skills are fairly minimal in this area, but is there anything I can check? Could there be something that needs lubricating? Or is all of this an indication that my Jobo might be on its way to the great Jobo graveyard in the sky?

RobertV · Nov 2, 2010

Some parts you have to lubricate with Vaseline. It's also mentioned in the manual.
About a check up in UK I do not know. In Germany it's not a probelm.

Parts are still available.

Greetz,

Robert

sandholm · Nov 2, 2010

Hi,

Sorry to hi-jack the thread, but were can i get spare parts, i need a new cogwheel. I emailaed a lot of placed but no-one replayed back (live in Switzerland so Germany based companies are no problem).
cheers

RobertV · Nov 2, 2010

but were can i get spare parts, i need a new cogwheel.

Jobo, Germany.
BTW I have still one new cog wheel. This one was not fitting on the axe of the Jobo CPA-2. I got a smaller inner diameter type.
I am using a completely refurbished CPA-2 with elevator now. C41 development is a piece of cake with these units.

sandholm · Nov 2, 2010

Hi,

cool, I have checked there homepage and they do not list the cog wheel as a spare part, http://www.jobo.com/web/Ersatzteile.319.0.html , but i will shoot them an email, the cog wheel i need is for a CPA-2 which a lift, and as you I agree its perfect for C41/E6.

thanks

Sirius Glass · Nov 2, 2010

Rehabilitate it! Let us know if you can't find parts in Europe, then I can give you some North American contacts.

Steve

Paul Green · Nov 2, 2010

Update: I checked the fuses and the soldering today to see if it was anything obvious and no such luck. I switched the processor on again and it simply ground to a halt after a minute or so.
I have found the correct part numbers and have sent a few emails; I shall let you know how it goes. If I don’t hear anything back then I’d be glad to grab some your contacts.

Cheers,
Paul.

Edtog · Nov 3, 2010

Keep us posted, I dread the day my CPP goes wrong....

Paul Green · Nov 4, 2010

So I sent out a few emails and have had one tangible reply from a dealer in Germany. He said that they never stock the motor for the non plus cpe2 processor and that my only option was to buy a cpe2 plus motor which would then require modification. I was quoted 70 Euros plus shipping for the motor so currently I’m going to look at other options; I have heard that some windscreen wiper motors might fit the processor although this might just be an urban myth.

@Edtog After clicking on your personal website I realised that I had come across it before whilst researching bits and bobs.

Paul.

GeorgesGiralt · Nov 4, 2010

Hello !
The CPE2/CPE2+ use windshield truck motors. Alas, the older CPE2 motor is not made anymore and Jobo had to make a CPE2 Plus to use a new motor....
If you are sure your motor is dead, you'd better look for a used working processor... But it could also be that the electronic driving the motor has died. So IMHO I would check first ;-)
On the other hand, if the German has a solution to use the new motor... For 70€ .... I would be temped !

I would be delighted to get the German Email or phone number as I own a CPE2 ......

Edtog · Nov 7, 2010

I've heard and read lots about the Jobo windscreen motor, but have never once seen any proof. Think it's an internet myth but very happy to be proved wrong.

GeorgesGiralt · Nov 12, 2010

Edtog, I found one in a shop dismantling cars and truck which was exactly the same maker, model, size but alas only 12 V instead of the required 24. I had chance swapping the reduction gear which was worn on mine....
So I may be *also* an Internet myth ..... ;-)
The factory making these motors had been bought by bigger one which "rationalized" production by shutting down the factory. This explains why they are no more....
The only advice I can give you is not to overload the motor, otherwise .......

Paul Green · Mar 5, 2011

So I decided to get the processor out of the cupboard as I had a bit of time today. I have started to take it apart and need a bit of guidance on how to remove the motor. I can see 2 screws that enter from the water jacket side, but I am at a bit of a loss of how to remove the rotating shaft, does it just pull out?

Sirius Glass · Mar 5, 2011

Paul I suggest that you contact Steve Smith => joboman@aol.com for parts and advise.

Steve

hoffy · Mar 6, 2011

The rotating shaft? that stays part of the motor unit. Once you get the main drive magnet off (from memory, there is a screw in the end of the shaft), and the other mounting screws out, disconnect the wires and it should slide out.

If you can, test the motor on a strong power supply. I tested mine on a 18V 28Amp lab supply and I found the motor in mine was fine. It span fine and under load and barely drew half an amp. It was the Power Supply Unit that had died.

glbeas · Mar 6, 2011

Be sure the bearings on the motor have a small amount of lube on them. I've rescued qiute a few motors whose only problem was siezed journal bearings that had gotten dry.

Paul Green · Mar 6, 2011

Thank you for all your suggestions, I will send off an email off to Steve, but in the mean while I am going to have a play. That being said I’m not hugely mechanically minded, but it can’t get any worse can it....
I have a friend who is able to test the motor using another power source, but won’t be able to for a week or so, so the next step is to check the bearings.

Cheers again guys.

Paul Green · Mar 6, 2011

I took the motor apart this afternoon and couldn't find anything wrong, well the my eye anyway, so next step power pack.

hoffy · Mar 6, 2011

Be careful with the power supply. As a matter of fact, I would suggest that you get someone who knows about electricity to have a look (if you are not that way inclined). I believe they have mains voltage in....

Joel_L · Apr 4, 2011

Hi,

You'll notice that the Jobo motor is also 12V and not 24V. It is not uncommon to run motors at higher than rated voltage. This is usually not a problem if the motor is not overheating in the application it is being used in. My CPE2 + motor is also dying, I took it apart and turned the armature. It is working better, but i would still like to find a replacement. The motor and gear assembly does indeed look to be a standard Bosch part, I was able to find specs for it, but not a source for the motor. Anyone find a source yet?

Joel

Is my Jobo cpe2 dying?

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