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  1. Hi all, I have noticed that there does not seem to be any one location easily found on the internet which has the collected info of what Gaggia Classic models exist, their model numbers, and their characteristics. Lots of people ask again and again, and a central source is required. I do not know enough to list them all, but can some of you write what you know in the replies and I'll update the main post to include the details so that others may easily find it? Details we are looking for: Year Model numbers Recognisable features Any other historical notes of interest Sources (if easily available), e.g. images, official documents, etc. Paging @FairRecycler, @ratty, @MrShades
  2. Hi Daniel, I was actually most curious about this! Can you say more? What rewiring changes would you do? What is a digital in?
  3. Love this update. Thank you. I've seen the pre-heater coil mod for a few different cases now---it's quite challenging in the Gaggia. The other way to do it is to fashion a pre-heater box, and this is something seen around these parts:
  4. You guys are wonderfully resourceful. Great stuff. That switchbank is my least favourite part of the Classic. For a machine that's so repairable, the switchbank is the least repairable component.
  5. I guess it boils down to the fact that mechanical control is sometimes easier than electrical control. Regarding the use of dimmers, my understanding is that cheap dimmers can be effectively implemented with the standard vibration pumps and the only tricky business is that you may need to use a resistor. See comments by @Olek and @GrahamS regarding the 3300 Ohm resistor.
  6. Out of curiosity, why is this better than a dimmer?
  7. Hi, I think I understand. I re-wrote the image with the numbering from the more classic Gaggia Classic wiring diagram. Is this how you would describe it? So: Power switch off: Nothing connected Power switch on: (7, P, 8. ) all connected Brew switch off: (P, 2) connected Brew switch on: (1, P, 2) all connected Steam switch off: (P, 6) connected and (3, P) disconnected Steam switch on: (P, 6) disconnected and (3, P) connected
  8. Argh! Their diagram seems to be mislabeled. They have on the top row of the switchbank in the photo 1, 2, 3 ... whereas in the bottom image they have 1, 5, 3. Is the (2, 6) supposed to be swapped with (5, 9)? Can someone confirm what are the numbers that are supposed to go in the second diagram?
  9. Many thanks. Can you confirm: When steam switch is off, (P-6) is disconnected and (3-P) is disconnected When steam switch is on (P-6) is connected and (3-P) is connected Or does flipping the steam switch on connect (P-6) and (3-P) and they are disconnected otherwise?
  10. Hi, and as I puzzle out what you've said, I want to also ask another question that will illustrate just how ignorant I am: Consider the column marked 7-P-8. When the switch is flicked to 'on', does this mean that the signal from '7' is routed through 'P'? How is 'P' connected, if at all, to '8'? If I understand things correctly, it goes: Outlet live (negative) To Switchbank 7 Flicked to 'on' then allows current to proceed to 'P' directly below 'P' then goes to brew thermostat Brew thermostat to Steam thermostat Steam thermostat to boiler pin top right Current goes through all boiler pins, then finally to fuse to positive outlet terminal In this configuration, and with the steam switch off, doesn't current pass through the steam stat on its way to the heating elements?
  11. Here is a diagram of the Classic wiring. Looking from the back, let us write the terminals as: [code] 7 -- 5 -- 3 -- 1 P -- P -- P -- P 8 -- 6 -- 4 -- 2 [/code] Can someone explain to me how the (5, P, 6) and (3, P, 4) columns are connected?
  12. I had a contact with a university academic who apparently had stored the archives. I meant to ask him again if these could be recovered, but we might have to wait to the end of the academic year. Thanks for reviving this thread and reminding me.
  13. Looks great! Will take it at asking.
  14. Very cool and interesting though most people just do a dimmer mod to adjust pressure!
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