A walkthrough of DIY motor replacement for the Popper Coffee Roaster
With one screwdriver, a small pair of pliers, and some patience, you can replace the fan motor in the “Popper is a Coffee Roaster” in about 20 minutes! If the fan motor started misbehaving, that can bring a Popper A machine for roasting coffee. Or the person operating it! The basic requirements for a coffee roaster are a heating element that gets suitably hot and a mechanism... ...more back to life for another 250+ roasts!
The process does mean taking apart the machine more so than other minor tweaks people make to the Popper. If you aren’t familiar with these kinds of repairs, or losing tiny screws is in your DNA (like me) you might find someone else to do this for you.
But, as you see in the video, it’s pretty cool to rescue an appliance from the trash bin and get a bunch more use out of it.
(Remember when appliances were worth fixing, and every neighborhood had a repair shop … like a lawn mower repair or a TV repair shop. Or even a radio shack! Sigh)
(By the way, most people experience a small bump in the amount of coffee they can roast after the motor replacement. If your roast is not getting as dark as before using the same settings, try roast 5-15 grams more coffee).
Here’s the product link to Motor Replacement Kit for Popper
Listed instructions from the Video Captions
If it’s helpful, here are the instructions listed out, as they are shown in the video. If there is extra clarification you need or a photo that would be helpful, please comment and we will try to add that.
1- remove the 4 rubber feet to reveal screws beneath.
2- remove the 2 larger front face screws with the No. 1 driver.
3- remove the 4 screws under the rubber feet to release the base from the Associated with and sensed by mouthfeel, body is sense of weight and thickness of the brew, caused by the percentage of soluble solids in the cup, including all... ...more shroud.
4- separate base from shroud gently tilting at angle toward the the ribbon wire
5- disconnect ribbon wire and put the body aside.
6 – remove thermal switch connectors and remove insulation jacket.
7 – remove 3 screws holding roast chamber assembly to base plate
8 – remove 3 machine screws holding white fan shroud to metal roast chamber.
9 – remove 3 ceramic spacers to prevent damaging them.
10 – pull the fan off the splined motor shaft
11 – remove 2 small motor mount machine screws – motor is free now
12 – pinch the insulation above the spade connector to help release, while gently pulling side to side and upward.
13 – apply the 2 strips as in the video, not covering any openings in motor casing
14 – insert motor back into white housing, lining up holes in motor with where the 2 mounting screws will go.
14a – (oops) reattach motor with 2 screws, and tighten while pushing motor in place from the back. Don’t overtighten…
15 – push fan down with firm even pressure. test that it moves smoothly
16 – replace ceramic spacers. (added: These are very important to hold fan and heat coil in proper position!)
17 – replace 3 machine screws holding metal chamber to white motor mount.
17a – (added: You will be connecting the red and black wires on the new motor back to the PCB board exactly as they came off; black wire on the lower connector, red wire on upper connector. If you reverse these the motor functions but cannot roast much coffee because (I am pretty sure) the fan will be spinning backwards!
18 – slide thermal jacket on and re attach connectors to thermal switch, pinching them on if they feel lose at all. (added: if they seem loose at all, crip them on a but with pliers. If they aren’t well connected, full power is not getting to the heat coil, and your roasts will take too long / bake.)
19 – Inverting popper, attach base to chamber with 3 screws.
20 – reconnect ribbon cable.
21 – Reseat the shroud on the base, keeping one hand in top hole of roaster to guide it. Don’t force it!
22 – Replace the 2 larger front screws and 4 screws under the rubber feet, and replace rubber feet.
23 – Test your work… hopefully that motor purrs at an even clip and you have 250+ roasts more…
Some people can increase their batch size slightly after the install, depending on how the coffee spins in the Popper. The motor has better carbon brushes, and has equal or more power than the original, but it depends on your electric line specs and many other factors too.