Jobo Processor Manuals

Buckwheat, Holy Jim Canyon

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Buckwheat, Holy Jim Canyon

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Sonatas XII-44 (Life)

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Sonatas XII-44 (Life)

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Have A Seat

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Have A Seat

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Cotswold landscape

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Cotswold landscape

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Carpenter Gothic Spires

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Carpenter Gothic Spires

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Sirius Glass

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Besides The Rotary Processor Manual by John Tinsley, which I ordered, does anyone know where I can find operating instructions for a CPA2 0r CPP 2 processor? In particular, motor speed for XTOL, Rollo Pyro, black & white prints, C-41 processing and color prints?

Steve
 

Oren Grad

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The official instructions are here, though for some of your process-specific questions you'll likely have to look elsewhere.
 
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Sirius Glass

Sirius Glass

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Thank you so much Oren.

Steve
 

jp80874

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Ask four users of Rollo Pyro re: speed control, get seven answers. I have used #4 with reversing Expert drum for four years and know there are several other people here who swear by other #s and continuous rotation. What ever works is what I believe.

John Powers
 
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Sirius Glass

Sirius Glass

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Ask four users of Rollo Pyro re: speed control, get seven answers. I have used #4 with reversing Expert drum for four years and know there are several other people here who swear by other #s and continuous rotation. What ever works is what I believe.

John Powers

I am getting the 3010 4x5 Expert drum from FreeStyle [insert sponsor plug here] but I do not have a Jobo lift. Is the lift really necessary for pyro work? I could see the need if I was doing C-41 work because of the heat.

Steve
 
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Sirius Glass

Sirius Glass

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Maybe Chris Corner aka cc25corner@gmail.com will sell a Jobo lift to me. Will he accept Nigerian money? :wink:

Steve
 

jp80874

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I am getting the 3010 4x5 Expert drum from FreeStyle [insert sponsor plug here] but I do not have a Jobo lift. Is the lift really necessary for pyro work? I could see the need if I was doing C-41 work because of the heat.

Steve

The lifting gearing in my lift recently jammed. I have not figured out how to fix it so I have reverted to the stop rotation and hand dump the chemicals at each step process. It seems to work well. I worry about so many starts and stops of the motor and switch, but the alternative shipping and repair is also quite expensive. Other than filling through the lift I believe I am doing the same as working without it.

I do 8x10 in the Expert drum 3005 (I thnk) and 7x17 in a 2500 extended series drum.

John
 

TheFlyingCamera

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I run my Jobo at the bare minimum possible speed, just a hair before Off, when doing any b/w process, especially with any kind of Pyro, as Pyro developers tend to oxidize rather rapidly on their own even without agitation. The lift is extremely helpful for pouring/draining chemicals, and if I'm not mistaken, it has the reversing gears to alternate the direction of rotation for the drums. I've never tried to use my Expert drums on a Jobo processor without a lift, so I don't know if they will work without one or not, but I suspect they don't.
 
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Sirius Glass

Sirius Glass

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Thank you John and Scott.
 

Mahler_one

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Any mechanical questions that demand an expert answer from those very knowledgeable about Jobo items can be obtained from the Jobo service person at Omega Satter in Maryland ( I think ). His name is,I believe, Greg Blank. Worth a call about the questions concerning rotation, the lift, etc. etc. Of course, real world experience from those who have used the Jobo day in and day out is also quite beneficial.

I have run my Jobo at the "normal speed setting" ( in my case, "4" ) for black and white film processing using the usual black and white developers. IMO, there is no mechanical or "processing" reason to run the motor at slower speeds in such instances. With Pyrocat HD I do indeed use a slower speed-just enough so that the drum turns regularly without any hesitation or stress. Following Sandy King's instructions about the addition of sodium sulfite has decreased aerial oxidation significantly, and such oxidation is no longer an issue.

Of course, the final "arbiter" of any method is the look of the negative. If what you are doing works well, and causes no damage to your equipment, then there is no reason to change. I would suspect that NOT using the lift with the expert drums is probably not the best way to use the expert drums and your machine-however if you are getting the results that you want, then excepting the risk of damaging your Jobo, why change?

I believe that the questions concerning starting and stopping the motor to raise the drum, and the "need" to reverse the direction of rotation, have been discussed in depth previously on APUG. As I recall, there was no unanimity.
 
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