NEXU INTERNATIONALSAMPLE PRO 100SAMPLE ROASTER                                      MANUFACTURED BY NEXU INTERNATIONAL
SINGLE DRUM OPTIONAL CHAFF COLLECTION CYCONE
STEEL DRUMS
HEAT LAMPS
ALL RIGHTS RESERVED
589 Rappahannock Drive WhiteStone Va 22578
Tel (804) 435-5522 Toll Free (866) 244-1578 Fax (703) 991-7133
www.coffeelabequipment.com 
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QTY           DESCRIPTION                                                                                          REF# 
SAMPLE ROASTER 1 DRUM GAS HEAT / CYCLONE OPTIONAL               672 1DG

SAMPLE ROASTER 2 DRUM GAS HEAT W/CYCLONE                               672 2DG

SAMPLE ROASTER 1 DRUM ELECTRIC HEAT / CYCLONE OPTIONAL      672 1DE

SAMPLE ROASTER 2 DRUM GAS HEAT W/CYCLONE                               672 2DG
QUOTATION REQUEST
​INDIVIDUAL IGNITION ,AIR, AND FLAME 
CONTROLS, AND THERMOSTAT FOR EACH DRUM
​The Coffee Pro Sample Roaster provides​ ​excellent results in roasting small batches of coffee, for research or quality control.

The coffee beans are fed into the feeding spout of the roasting drum.
A small 25 watt induction motor turns the cogs at a constant rate.
(Specify 50 or 60 hz)
The cogwheel  on the drum makes contact when lowered, and disconnects when the drum is raised to expel the roasted beans. 
BROCHURE SAMPLE ROASTERS
Underneath each drum is either a set of (3) 500 Watt halogen heat lamps, or gas burners, providing the equivalent of 5,500 BTU's per drum. 
The drum temperature is regulated by a digital thermostat. The rate of temperature change can be altered by adjusting, the individual air and gas flow controls.
AIR FLOW CONTROLS 
The cyclone (SINGLE DRUM CYCLONE LEFT) removes chaff from the roasted beans as they are emptied on to the cooling tray, along with exhaust gases, from underneath the drum area, during roasting. It is important to leave the cyclone on during roasting, because the vacuum it creates, affects the temperature settings.
IMPORTANT INFORMATION IN SELECTING A SAMPLE ROASTER-
COFFEE PRO SAMPLE ROASTERS ARE AVAILABLE WITH GAS OR ELECTRIC, AS A HEAT SOURCE, 

NATURAL GAS OPERATES AT A LOWER PRESSURE THAN PROPANE GAS, AND WILL REQUIRE AN ADJUSTMENT TO THE GAS SUPPLY ORIFICE, IN ORDER TO PROVIDE THE CORRECT FLAME. A LICENSED GAS FITTER OR PLUMBER WILL BE ABLE TO DETERMINE THE CORRECT ORIFICE SIZE, BASED ON YOUR DELIVERY PRESSURE, THE BTU OUTPUT (5,500 PER BURNER) AND ALTITUDE. CHECK LOCAL CODES FOR PERMIT RESTRICTIONS, AS WELL AS PROPER VENTILATION REQUIREMENTS.


















PROPANE OPERATES AT A HIGHER PRESSURE, AND THE EXHAUST  IS NON TOXIC. HOWEVER, AN EXTERNAL PROPANE TANK MAY BE REQUIRED. CHECK LOCAL AND STATE REGULATIONS.

ELECTRIC HEAT IS PROVIDED USING  500 WATT HALOGEN HEAT LAMPS, READILY AVAILABLE AT A HARDWARE STORE. BECAUSE OF THE AMOUNT OF CURRENT DRAW, THEY REQUIRE 220 VOLT SERVICE.
The heavy steel alloy drums provide
even heating, and simulate roasting conditions in large scale roasters.
A damper valve may be used to help regulate the air flow.

Some beans produce more chaff than others, and may collect too quickly at the drum exhaust ports, restricting the exhaust flow, and causing over heating. Care must be taken to provide the right vacuum pressure, so that chaff is removed, but not too strong to interfere with the flame.
KEEP EXHAUST PORTS FREE OF DEBRIS
NATURAL GAS VS PROPANE 
The gas supply orifices unscrew from the burner.
​They are calibrated at the factory for propane gas.
For natural gas, which operates at a lower pressure, the orifices should be calibrated on site, by a licensed gas fitter/plumber, or contact Coffee Laboratory for replacement orifices. Be sure to have your gas pressure  information handy

EXAMPLE: At 7" WC, and 5,500 BTU, AT SEA LEVEL,
THE DRILL SIZE USED TO CALIBRATE THE ORIFICE WOULD BE A #60
(SMALL DIFFERENCES CAN HAVE BIG RESULTS, SO BE SURE TO HAVE
A LICENSED GAS FITTER CALIBRATE THE BURNER ORIFICES)
ELECTRIC VERSION OPERATING INSTRUCTIONS
TECHNICAL MANUALS
GAS VERSION OPERATING INSTRUCTIONS
SINGLE DRUM GAS SPEC SHEET
SINGLE DRUM ELECTRIC SPEC SHEET
DOUBLE DRUM ELECTRIC SPEC SHEET
DOUBLE DRUM GAS SPEC SHEET
SPECIFICATION SHEETS
LEFT NATURAL GAS ORIFICE
RIGHT PROPANE GAS ORIFICE
CYCLONE CHAFF COLLECTORS
DOUBLE DRUM CYCLONE
THE SINGLE DRUM SAMPLE ROASTER HAS AN INTERNAL FAN, WHICH SHOULD REMOVE MOST OF THE CHAFF THROUGH THE EXHAUST PORT.

FOR THIS REASON, THE MINI CYCLONE IS OPTIONAL FOR THE SINGLE DRUM GAS ROASTER.
HOW TO DRILL A NATURAL GAS ORIFICE
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SPECIALISTS IN MOISTURE, PARTICLE CHARACTERIZATION, COLOR, AND SAMPLING
APPLICATION SPECIALISTS 
QAQC LAB
FOR GENERAL QC / R&D 
LABORATORY APPLICATIONS
"Only one comment! We are extremely happy  
 with our double drum sample roaster!"
 Regards,
 Jose
"We have found the Coffee Pro to be a great sample/lab roaster. We have the twin drum propane unit and have found the samples we have put through the Coffee Pro to be very consistent giving us quite an accurate indication of the quality and characteristics of our samples. We shopped around before deciding on the Coffee Pro. The deciding factors were price/affordability, quality workmanship and simplicity of use. We are extremely happy with our Coffee Pro. Gavin Wilkinson - The Aussie Bean, Orange CA USA"
SAME AS BILL TO
ADD CYCLONE
ADD CYCLONE