KALDI Home Coffee Roaster Motorize Type Full Package Including Thermometer, Hopper, Probe Rod, Chaff Holder (Gas Burner Required)
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- KALDI Motorize Coffee Roaster
- Gas Burner Required
- Body, Thermometer, Hopper, Probe Rod, Chaff Holder Included
- Free Volt Adapter Included
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Heat source: heating method by gas
Rated voltage: DC 12V. 6W
DC power supply: input-AC110~220V,
Output-DC 12V 1000Ma
RPM: 60/50:1 reducer
Material: stainless steel Capacity: 200g, Max.: 250g
Stirring drum size: (diameter)120mm x 115mm, thickness: 2mm
Product size: 160(W)x200(D)x300mm(H),
Product of Korea
Top Customer Reviews
It is designed to sit on a gas burner. You control the flame.
Fit and finish are A+.
When the probe is inserted radially into the drum most of its length, temperature readings (in Celsius) correspond accurately to roast depth (see the chart on SweetMaria's at [URL removed by Amazon ...]) . Some beans will touch the probe as the drum spins. You don't need to submerge the probe's point in the beans. Be sure to convert the Fahrenheit probe temperatures on the SweetMaria's page to Celsius. :)
Easy to use with the funnel attachment. For the funnel to connect properly to the drum, the port of the drum must protrude about 1/4 " proud from the face of the chassis, so that it sits on the two roller bearings. If you need to make an adjustment here, turn the unit over, and you'll see a philips-head set screw on the shaft that will allow you to slide the drum a tad on the shaft. Remember to retighten the screw.
Capable of roasting an 8 ounce batch; any more than that and beans start to fall out the front port into the chaff tray.
It doesn't fit *perfectly* on an Iwatani ZA-3HP butane burner's pot rests, though it fits well enough; maybe it could have a pair of bolts on each side of the chassis that would allow a couple of stainless steel "outrigger" devices to be attached for greater stability and burner adjustability.
Shipped from Korea. Packaging was good. No complaints there.
I don't know if there's any warranty on the motor. Everything is in Korean.
The default AC/DC converter was a 220V AC to 12VDC 850 mA converter, which turns the drum at only 28 rpm when plugged into 120V mains.I had to request the 120V AC converter from the Seller. With the 120V AC to 12V DC converter, the drum spins at 72 rpm when plugged into 120V 60hz mains.
Shipped from Korea via DHL (whose automated delivery scheduling system is sorta buggy, BTW. DHL ignored the delivery date I had confirmed on their website and delivered a day early, but then had to redeliver because I was not home that day. Signature is required.)
1.Well packaged and fully assembled
2.Excellent fit & finish with beautifully polished thick gauge stainless steel
3.Perforated s/s drum with precision holes
4. Copper drum sleeve, optionally removable
5.Excellent agitation of coffee beans
6.Capacity easily greater than 1/2 lb. of beans
7.Also excellent for small batch sample roasts
8.Temperature probe sits in rotating bean mass
9.Very responsive to temperature adjustments, when desired, by adjusting your gas burner ( more responsive than using a fry pan on a gas burner)
10.Roast time can easily be adjusted from 10 to 15 plus minutes depending on burner setting
11. Excellent design of passive convection, no need for additional blower fan
12.Works very well in home setting on standard gas burner and range hood
13.Drum is angled up on open end to prevent spilling of rotating bbeans
14.Very easy to hear first and second cracks emanating from drum opening
15.Nice probe rod (trier) for sampling beans during roasting
16.Roaster requires no maintenance cleaning other than dumping chaff collector & surface
17. Very small footprint
1.Some drum rotation noise
2.Housing gets very hot
3. Motor conducts heat from housing and gets slightly hot
4.Frame does not sit well on some burner grates and may need support rods
5. Included analog thermometer is not responsive enough for precise roasting and should be replaced with a digital thermoprobe
6.Positioning the trier next to the thermometer is slightly tight and awkward when sliding into the bean mass
7.Positioning the thermometer is also a little tricky as it must be angled into a 11/2 in. drum opening and into the bean mass, while avoiding the drum agitation vanes, and also leaving enough lateral room for the trier to be inserted when desired
8.Some chaff falls under nthe drum and into the burner area and requires additional clean up (vacuuming) after roasting
For professional control, consider replacing the analog thermometer with a digital probe. I bought the Quest M3 digital thermocouple available from Coffee Shrub. This is plugged into a Mastech K-type digital thermometer from Sweet Marias. The thermocouple mounting needs to allow the tip to enter the bean mass and be narrow enough as to not interfere with trier access into the beans.
I took a brass hose barb with a 3/8" barb and 1/2" male pipe thread. I tapped the inside of the barb with a #8 x 1.25 tap. This allowed the Quest probe to screw into the fitting on the tip end, with the cable exiting the threaded end. The threaded end was then screwed into the original thermometer mounting nut. There was a slight pitch difference in the threading but no real problem for this application. The result of all this was a nice narrow profile extension mounting for the probe allowing easy access into the bean mass. Adjusting the probe position just involves bending the adjustable goose neck mounting system. (The goose neck arrives premounted to the chaff collector tray.)
Another addition you may need is some frame support if the roaster frame doesn't sit well on your burner grate. My frame fell in a great gap and needed additional support. I used two pieces of "L" shaped aluminum 1"x1"x12" - one under front edge of frame, one under back edge.
The actual use of the roaster is simple and as follows:
1. Position roaster so drum is centered over gas burner (use support rods if necessary).
2. Slide on chaff collector and slip the pre-positioned thermo probe into the drum
3. Attach the power supply mini plug
4. Flip on the motor switch on the top
5. Turn on the digital thermometer
6. Turn on gas burner to medium and hood to medium
7. In less than 2 minutes and at about 350 degrees, lift off chaff collector, slip on hopper and dump beans into drum
8. Remove hopper, replace chaff collector/probe unit
9. At about 7 minutes and 380 degrees, reduce heat and ease into first crack
10. As first crack slows, increase heat (always use some heat rise to avoid stall)
11. If going into second crack, adjust burner heat for the rate you want while testing roast with trier
12. When ready to end roast, move quickly and:
a. turn burner off
b. lift chaff collector off
c. grab roaster handle in one hand, motor body in other hand, dumping beans into an external vacuum cooling bowl
d. turn motor off
e. after beans are cool, turn hood off and vacuum chaff debris over and around burner area.
Note: A decent fast roast can be achieved by just leaving the burner on medium or you can customize and develop your roast profiles with burner adjustments. Inherent convection air flow is adequate and needs no adjustment or additional blower fan. All roasts were done with the copper sleeve removed from the drum. All beans roasted in the fully perforated drum have been of excellent and uniform quality.
This unit came with a 120V to 12VDC adaptor terminating in a 5.5 mm mini plug.
I leave the "funnel" in the machine the whole time as coffee likes to jump out. I do not bother with the temp probe or sampling the batch for color. I am making espresso only so I roast just to second crack. . .remove from heat. . . unplug. . . remove funnel . . . and dump beans onto a massive heat sink to cool off. . . the heat sink is a Large cast iron pan. . .Beans are cool enough in 2 minutes or so to place into airtight canister.
Ps Now doing 350 grams MAX. . . approx 23 minutes to beginning of 2nd crack, Any more than 350 and beans start coming out even with the funnel left in.. . .I'll put something on you tube someday :)