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Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement

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Replacement of the stack assembly on any Kaffelogic Nano or Nucleus Link coffee roaster with a D or P prefix serial number.

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  1. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing Front Panel Screws: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing Front Panel Screws: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove the 6x 2.5mm Hex screws on the left and right side of the roaster.

    • Take care not to damage the buttons while maneuvering the front panel, with all six screws removed it may fall away.

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  2. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Lift the closure: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Lift the closure: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Hold the front panel steady while removing the plastic top/closure.

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  3. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the front panel: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Pull away the front panel carefully.

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  4. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the rear panel: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the rear panel: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the rear panel: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the last 2.5mm Hex screw securing the rear panel.

    • Pull up on the rear panel to remove it from the roaster.

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  5. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Access granted: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Access granted: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Set the panels aside somewhere safe and bask in the beauty of your naked roaster.

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  6. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the thermocouple: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the thermocouple: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the thermocouple: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Use a 2.0mm slotted screwdriver to remove the thermocouple wires from the PCB-A

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  8. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the earth: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the earth: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the earth: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Use needle-nose pliers to pull the roast chamber earth lead away from the earthing point.

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  9. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Pull away the roast chamber: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the roast chamber from the element chamber.

    • Head through to our wiki for instructions on recalibrating your fan speed after this repair.

    • Nucleus Link anemometer calibration instructions can be found here.

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  10. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the mains wiring cover: crwdns2935265:09crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the mains wiring cover: crwdns2935265:09crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the mains wiring cover: crwdns2935265:09crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the terminal PCB cover and set it aside. This is held in with four small plastic clips at each corner.

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  11. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the mains connectors: crwdns2935265:010crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the mains connectors: crwdns2935265:010crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the mains connectors: crwdns2935265:010crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove all four connectors on the left side of the terminal PCB.

    • These are marked an N (Neutral), TN (Transformer Neutral), TL (Transformer Live) and L (Live)

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  12. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the motor: crwdns2935265:011crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the motor: crwdns2935265:011crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect the motor cable, this may take some wiggling.

    • Refrain from using pliers or metal tools on this connector, as the plastic insulation can be damaged.

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  13. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the SSR signal: crwdns2935265:012crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Disconnect the SSR signal: crwdns2935265:012crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull upwards on the SSR signal connector to remove it.

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  14. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the earth tab: crwdns2935265:013crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the earth tab: crwdns2935265:013crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove the earth tab: crwdns2935265:013crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the mains earthing connector from the tab. Pliers can be used for this as it can be tight.

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  15. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove gantry screws: crwdns2935265:014crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove gantry screws: crwdns2935265:014crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Remove gantry screws: crwdns2935265:014crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the 4x 2.5mm Hex screws securing the gantry plate to the aluminium uprights. A long driver bit is recommended for this.

    • Some early roasters will have sprung earth tabs on the right hand side of the roaster, please place these back as they were found during reassembly.

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  16. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the stack: crwdns2935265:015crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the stack: crwdns2935265:015crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Removing the stack: crwdns2935265:015crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Pull upwards on the stack to remove it from the base assembly.

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  17. Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Stack Removed: crwdns2935265:016crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Stack Removed: crwdns2935265:016crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Kaffelogic Nano 7/LINK (D-P Serial) Stack Replacement, Stack Removed: crwdns2935265:016crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Well done! Your stack assembly is free!

    • During reassembly, the star washer should be placed between the gantry plate steel and the earthing tab as pictured.

    • There is a hole in the gantry plate to route the transformer primary wires through. Hold them to the side as you place the new stack.

    • Head through to our wiki for instructions on recalibrating your fan speed and element resistance after replacing the stack. Nucleus Link anemometer instructions can be found here.

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To reassemble your device, follow these instructions in reverse order.

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