![]() ![]() ![]() Sticker on back indicate that you can use 150W or 300W bulbs. All this latest version was labeled "Ilford Multigrade 500H" in front of the head. Only the latest version is with the 7 flat pins + 1 round pin. Ilford produced at least 3 versions of the Ilford 500 system and you can find many versions of the manual. The third type of power supply is also wider than the first two.Ī lot of false information in this topic. The first type is labeled "ILFORD ILFOSPEED MULTIGRADE", the second type is labelled "ILFORD MULTIGRADE" while the third version has "ILFORD" and "MULTIGRADE" in separate locations. There is also an in between version that can use either type of globe and has a plug with 8 flat pins. There was a later version designed to be used with 300w ELH globes and had a plug with 7 flat pins and one round pin. I just went out to the garage to take some more photos of my spare units and things have become even more complex as there appear to be *at least* three different versions of the 500S/500H combination.Īs documented before there is an early version that was designed to be used with 150w ESD globes and had a plug with 8 flat pins. The Beseler 4x5 box is actually in two pieces. The differnce is in the drop down amount. Also keep in mind the mixing boxes vary depending on the enlarger. I have seen pictures/measurements on some forums if google doesn't help, I'd have to take mine apart. Four screws then hold the plate to the enlarger then four more in the corners hold the head in place. You remove the locking clamps on the enlarger that hold the other heads in place. Re Beseler 45 adapter: There is a flat metal plate that goes between the enlarger and the Ilford head. This was/is common for equipment that is not a major consumer item. Older ones have none or were locally inspected with a provincial sticker. Note that I have only seen I think one power supply with a current CSA/UL approval mark. I recall some equipment needed wiring changes re grounding or wire gauge. RE Canada VS USA There is virtually no difference in the wiring/power standards now. The highest usage was 490w, not a problem. Also attached is a chart of power usage I made a while back. (Yes I have had a few apart and repaired them). Early power supplies were rated at 400W newer ones at 600W but they all used the same fuses and and far as I can tell the same transformer. ![]() The power supply is capable of handling them. So yes the early heads can be used with 300w bulbs if they have the extra heat shield. RE 150 VS 300 bulbs Attached are a couple pages which document the change. ![]()
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