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Jobo ATL-1500


MPerson

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Today I bagged a brand new complete Jobo ATL 1500 film processor kit for £550. Never been used, the guy never got around to building his darkroom then he and his wife split up etc. etc.

 

Initially I am going to run it with a water supply from a 5 gallon bin via a caravan water pump and an aquarium heater to heat the water supply. Once the darkroom is finished it will be plumbed in. Time to re-jig the wet side plans.

 

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Do you really need the extra tank heater? That unit has a built-in, circulating water bath with heater and can work in a room temperature from 50F to 86F. It's a life saver in our cold climates.

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Do you really need the extra tank heater? That unit has a built-in, circulating water bath with heater and can work in a room temperature from 50F to 86F. It's a life saver in our cold climates.

 

Isn't it for the wash cycles? Water must be taken in externally, surely, so needs to be the same temp as the processing chemicals.

 

John

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Do you really need the extra tank heater? That unit has a built-in, circulating water bath with heater and can work in a room temperature from 50F to 86F. It's a life saver in our cold climates.

 

Pico - the internal water bath is just to keep the drum and chemicals at the right temp for whichever process you are using.

 

For rinse/washing between steps it draws ready tempered water from an external supply. You can either plumb it in to a mains source or use a 12 volt pump to draw from a container/sink. The pump draws its electrics from the Jobo. The processor switches the pump on as and when it requires rinse water.

 

Jobo used to make a separate pump and heater for this purpose but they are no longer available. The idea being the unit was portable(!) for photogs in the field/abroad. They even made a large suitcase for you to pack it all in.

 

Also see here.

 

When can we start sending you our films? :)

Pete

 

Form an orderly queue.......

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Congratulation!

I am using an ATL 1500 too.

A few tips:

NEVER run the processor without water in the water bath. Even running dry for a short time will shut down the heating in order to prevent an overheating. You would have to open the machine in order to reset the heating curcuit.

SW developing is programmable and runs at 24 deg. Celsius.

ID11, D76 and TMAX developers are usable with constant agitation.

TMAX 135film 400tx@iso1600 7:00min

ID11 1+1 135 film 400tx@iso320 5:30 min ci=0.60 dmax=1.58

ID11 1+1 120 film 400tx@iso250 5:30 min ci=0.60 dmax=1.58

ID11 1+1 135 film Delta100@iso100 5:15 min

ID11 1+1 120 film Delta100@iso80 5:15 min ci=0.55 dmax=1.77

C41 and E6 films are easy to develop. Just load the machine and come back when it beeps.

You will need the external pump if you want to use the external trank for the water supply.

The Jobo heater is for C41 and E6. A fish tank heater @24 deg Celsius will be fine for SW.

 

brt

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brt - thanks for that. I have ordered a 12 volt pump and will solder a jack on to plug into the unit. Several people are using this pump and it works fine.

 

Any idea how much water it uses for rinse/wash when doing B&W? I have a 25 litre container I plan on using as the water supply.

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Any idea how much water it uses for rinse/wash when doing B&W? I have a 25 litre container I plan on using as the water supply.

 

They recommend two 15 Litre containers, so one for clean water, one for waste... so the whole waste including all the bottles is max 15 litres.

The bottles hold max 750ml, but no process uses more than 660ml.

JOBO AG

 

In section 9 the most rinse water required is shown as 11 litres ......

http://www.jobo.com/jobo_service_analog/us_analog/instructions/instructions_manual_atl-1500_09.htm

 

main page here...

http://www.jobo.com/jobo_service_analog/us_analog/instructions/instructions_manual_atl-1500_00.htm

 

John

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MPerson,

 

you will need a lot more water compared to development by hand.

The 15 litres container is good for one, sometimes two development cycles. The waste gets split up in water and developer/fixer and therefore I am using two canisters for that.

Developer and fixer are diluted with demineralised water and the bottles inside the ATL get a wash/clean with demineralised water too.

 

brt

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Xtol works fine and is my primary B&W dev in the JOBO. You can program it to suit any dev, including two bath if you wish. It is a brilliant solution for handling purely routine processes. C41, E6 and any B&W process is a breeze with this machine. It delivers absolute consistency and predictability.

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Erl - are you running with stock Xtol or 1:1?

 

Your mention of running two bath devs rang a bell. I went through my collection of View Camera and Sandy King did a piece on using Diafine for rotary but diluting A & B 1:1 with water and processing as normal. Something I will try in due course.

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Andy,

I am using 1:3 Xtol:water.

ie.125ml Xtol + 375ml water = 500ml dev.

 

Note: Dev one roll of 35mm requires only 170ml dev which means only 42.5ml Xtol in the water.

For some reason this is insufficient Xtol which exhausts before full dev.

 

I always mix dev for TWO rolls, even thogh I am only processing ONE roll. Beyond one film, the ratio is fine.

 

because the dev is soooo cheap, I don't question the reasoning.

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Erl,

 

may I ask for your development times with XTOL?

I have tried XTOL some time ago, but was not fully satisfied with my results.

I think it was my fault and would like to give XTOL another try.

Development with the ATL 1500 is standardized and repeatable compared to development by hand and I hope your times could be useful.

 

Thanks

brt

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For those in the future who may be looking, I have talked with a chap named Klaus in Germany who does the servicing for all the Jobo rotary processors and carries all the spares. I have ordered the Jobo heater for the external water supply from him.

 

Very helpful chap, impeccable English and a mind of info on the subject.

 

Fotolaborservice

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Erl,

 

may I ask for your development times with XTOL?

I have tried XTOL some time ago, but was not fully satisfied with my results.

I think it was my fault and would like to give XTOL another try.

Development with the ATL 1500 is standardized and repeatable compared to development by hand and I hope your times could be useful.

 

Thanks

brt

 

brt,

Sorry, I realize I omitted the times use.

I used to dev @ 14min but decided this was too much. I think I fell into this time as a result of slowly oxidizing stock solution, because I don't use it regularly enough these days. I now weigh out proportionally smaller quantities of the mixing powders so it is not all mixed at the first process. This way, I can make the 15Ltr pack last a couple of years!

 

Currently, my processing time for 'normal' process is 11 min.

I also use a weak 'Stop' bath before fixing.

My final wash is done in a wetting agent. - May & Baker 'Cascade' which I bought more than 50 years ago! It is so concentrated, I am sure it will last the rest of my life. ;)

 

Drying is done in a re-cycled clothes drying cabinet modified to hang film.

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