NORTH / 1KG

Mill City Roasters, LLC.1050 33rd Ave SEMinneapolis, MN 55414

Phone: +1 (612) 886-2089 Email: sales@millcityroasters.comOnline: www.millcityroasters.com

MILL CITY ROASTERSOWNER’S MANUAL & GRAPHICAL GUIDE SERIES

© 2016 Mill City Roasters, LLC.

2 | PART ONE

TABLE OF CONTENTS

PART ONE

ROASTER SPECIFICATIONS 4

MACHINE OVERVIEW 6

SPACE PLANNING 12

VENTING 14

PART TWO

GAS

ELECTRICAL

PHIDGET WIRING

CONTROL PANEL OVERVIEW

TEMPERATURE SETTINGS

ARTISAN SET-UP

PART THREE

IGNITION

SEASONING ROAST

CLEANING & MAINTENANCE

IMPROVING YOUR COFFEE ROASTING

TECHNICAL SUPPORT

PART ONE | 3

Model: TJ-067Nominal Capacity: 1 Kilograms

Manufacturer: North Coffee Equipment Co. LTD, Shenzen, ChinaDistributor: Mill City Roasters, Minneapolis, MN, USA

Current Certifications

ROASTER SPECIFICATIONS1KG GAS COFFEE ROASTER

4 | PART ONE

Roaster Dimensions 31.5 x 23.6 x 33.8 in (800 x 600 x 860 mm)Roaster Weight 198.4 lb (90 kg)Chaff Collector Dimensions 30.7 x 13.4 x 17.7 in (78 x 34 x 45 cm)Chaff Collector Weight 44.1 lb (20 kg)Net/Gross Weight 242.5 / 308.7 lb (110 / 140 kg)Crate Dimensions (one crate) 45.7 x 38.2 x 39.4 in (1160 x 970 x 1000 mm)Drum Thickness 0.2 in (4 mm)Drum Diameter/length 8.6 / 9.1 in (218 / 230 mm)Drum Construction 430 Stainless Steel, WeldedCooling Tray Diameter 12.4 in (315 mm)Cooling Tray Stirring Arm Length 5.1 in (130 mm)

Dimensions

Average Roasting Time 15 minute batchProduction 13.2 lb/hr, 105.8 lb/day (6 kg/hr, 48 kg/day)

Capacity / Output

Roaster Voltage/Frequency Single phase phase 220v, 15 amp service 50-60HzStep-up Transformer 120v to 220v, 1000wDrum Motor 45wExhaust Fan Motor 50wExhaust Fan Max Airflow 70 m3/hCooling Fan Motor 90wCooling Tray Stirring Motor 15w

Power

Heating Mode Natural Gas -or- PropaneMax BTU 20,000Burner Control Ball ValveGas Connection 3/8" NPTTypical Chaff Collector Exhaust Temp 300f (during normal use)Recommended Temp Controller Limit 455f (about 30 seconds into rolling second crack)Max Gas Usage 0.9 lb/hr (0.4 kg/hr)

Gas

USB Logging Interface Phidget 1048Logging Thermocouples BT, ET, Heating Air

Data Logging

PART ONE | 5

ROASTER - TOP VIEWSCALE 1” = 1’- 0”

MACHINE OVERVIEWVISUAL GUIDE TO ROASTER, CHAFF COLLECTOR & COOLING TRAY FAN

6 | PART ONE

ROASTER - FRONTSCALE 1” = 1’- 0”

PART ONE | 7

ROASTER - LEFT SIDE (CONTROL PANEL SIDE)SCALE 1” = 1’- 0”

8 | PART ONE

ROASTER - REARSCALE 1” = 1’- 0”

PART ONE | 9

ROASTER - RIGHT SIDESCALE 1” = 1’- 0”

10 | PART ONE

TOP

SIDE

CHAFF COLLECTORSCALE 1” = 1’- 0”

SIDE

PART ONE | 11

The SPACE PLANING portion of this guide references the two free-standing components in-cluded in this model (Roaster, Chaff Collector), the venting connections between those compo-nents along with suggestions for venting your system to termination (typically outdoors). Be-yond these components, users will likely require space for their own set-up during the roasting process including containers for green coffee and roasted coffee, stand/desk for a laptop, stools, work table, vacuum for removing chaff from chaff collector, scale, etc. When referencing the mini-mum space requirements we suggest, please adjust as needed for your own roasting process.

On the next page is a suggested layout of the Roaster and Chaff Collector. Although other lay-outs are workable, this option is derived by prior-itizing the following variables: (1) connecting the exhaust of the Cooling Tray Fan with the main exhaust flue above/beyond the Chaff Collector to prevent multiple penetrations in your roof/walls, (2) avoiding sharp bends/angles in all the vent lines to promote good air flow and cleaner vents by spreading equipment apart, and (3) providing clearance, access and reachability to different parts of the equipment that are required for safe operation.

The venting diagrams and specified venting parts in the pages beyond are based on this ar-rangment. Deviations from this arrangement due to space constrainst will require modification of those specifications. Please contact Mill City Roasters if you require assistance in customizing your layout in your space.

Space Planning Guidelines1. Check your local municiple building code

for regulations regarding the placement and venting of combustible production machinery. The requirements of your local authorities will govern in the event they exceed or contradict the recommendations made in this guide.

2. Clearance to combustibles: Maintain 24” clearance to all combustibles at sides and

rear of all parts of the roaster.

3. The intake port on the Chaff Collector shall be within 12”-60” of the exhaust port on the Roaster (typically at the rear) with minimal an-gles in the venting connecting the two ports.

4. Chaff Collector Access: Maintain access to doors of chaff collector and clearance to al-low for easy (and frequent) removal of chaff.

5. Blast Gate: When connecting the exhaust of the Cooling Tray Fan to the exhaust flue above/beyond the Chaff Collectior, we sug-gest using a blast gate in that venting line. This prevents back flow of roast exhaust into the fan. This will require the user to open the blast gate when the Cooling Tray Fan is in use and should be within reach from the left side of the roaster and Control Panel.

6. We suggest venting components have Quick Release features to allow for venting to be removed for cleaning and to provide clear access to the roaster interior and motors as required for maintenance.

SPACE PLANNINGCONSIDERATIONS WHEN PLACING YOUR ROASTER

12 | PART ONE

SPACE PLAN OPTION - TOP VIEWSCALE 1/2” = 1’- 0”

PART ONE | 13

VENTINGPORTS, PARTS & LINES

VENTLINE #

PART NORDFAB ITEM # DESCRIPTION MATERIAL NOTE

1

A SS 304

B SS 304C SS 304D SS 304

2

E SS 304F SS 304G SS 304H SS 304

3

I SS 304J SS 304K SS 304L SS 304M SS 304N SS 304O SS 304P SS 304

4

Q SS 304R SS 304S SS 304

T SS 304

Port Location Diameter Length Vent Line #

Roaster Exhaust Rear-top of roaster 2 15/16” 13/16” 1Chaff Collector Intake Side-top of chaff collector 2 15/16” 4 1/4” 1Chaff Collector Exhaust Top of chaff collector 6 1/4” 2” 4Cooling Tray Fan Ex-haust

Side-low of cooling tray fan

2 15/16” 13/16” 3

Connection options for vent parts:1) Welding2) Pipe sealant (as they should be a snug fit)3) High temp tape (least preferred)

Port/Vent Line Information:

Venting Parts List:

14 | PART ONE

VENTING DIAGRAM - TOP VIEWSCALE 1/2” = 1’- 0”

PART ONE | 15

VENTING DIAGRAM - RIGHT SIDESCALE 1/2” = 1’- 0”

16 | PART ONE

VENTING NOTECONNECTING COOLING TRAY FAN EXHAUST TO

MAIN EXHAUST/FLUE ABOVE CHAFF COLLECTOR

PART ONE | 17

This concludes Part I: Planning of the Graphical Guide for this roaster. Parts II & III will arrive with your

roaster and guide you through installation, set-up & your first roast.

If you have further questions or require customized assistance with your planning, contact us.

Mill City Roasters, LLC.1050 33rd Ave SE

Minneapolis, MN 55414

Phone: +1 (612) 886-2089 Email: sales@millcityroasters.comOnline: www.millcityroasters.com

GAS & ELECTRICAL

Natural Gas users may want to have their gas pressure measured prior to their roaster arriving. If the gas pressure is below 10” of water column, they will be making modifications to the burners on their roaster which will require a Wire Size Drill Bit Set, #61-80, a 1/4” chuck adaptor and a drill.

Electric: The 500g, 1KG, 2KG, and 3KG Gas Roasters operate on 220v service but allow for the use of the transformer to step up to 220v from 120v service. All Electric Roasters and 6KG, 10KG & 15KG Gas Roasters require dedicated 220v, 20amp service.

18 | PART ONE