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Guild 3/4.5 Roaster System

Guild 3/4.5 Roaster System

The Guild 3/4.5 Roastery System delivers specialty coffee roast profiling at a scale built for real production. Constructed from the same heavy-duty stainless steel as our industrial systems, it offers the stability and control needed for consistent output—while remaining compact enough for most roasteries. With a field-upgradeable path from 3kg to 4.5kg, it gives you more capacity without replacing your machine or disrupting your workflow.

ProRoast AI sits at the centre, linking every component to your Odoo ERP workspace. Heat, airflow, production data, and inventory move in sync—so you’re not just roasting coffee, you’re running a controlled, measurable operation.

  • Machine Specification
  • Size
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Price
R 499,900.00 R 499,900.00

Quick Specs

 Optimal Batch Size 
3/4.5 kg

  Production per Hour
15 kg+

 Roast Time
9-11 min

 Touch Screen
23"

 Convection / Conduction
70/30 

Control

Discover the Guild 3 Roaster System


The Guild 3: Precision Roasting, Scaled for the Modern Shop

The Guild 3 Roastery System delivers professional-grade, high-control roasting in a footprint designed for the boutique café or the emerging startup. Don't let its size fool you - it carries the same engineering DNA as our production-scale models, offering a level of precision that turns a small corner of your shop into a high-performance roastery.

1

A Roaster System 


The Guild ecosystem eliminates fragmented data by consolidating your entire production cycle into a single interface. Powered by ProRoast AI, the system acts as a unified "intelligent brain" for both your hardware and peripherals. No more manual logs or jumping between screens; ProRoast AI captures every second of data and syncs directly with your Odoo workspace. From green bean inventory to the finished bag, your entire workflow is managed from one central, high-performance hub.

2

The Guild 3: Industrial Power, Boutique Scale

The Guild 3 Roastery System delivers professional production power in a boutique footprint. Built with the same heavy-duty stainless steel construction as our Guild Industrial range, this system offers a significantly longer lifespan and superior thermal stability.

3

Built for the Future: The 4.5kg Power Upgrade

 
We understand that a successful coffee brand doesn't stay at its starting volume for long. That is why the Guild 3 offers a unique, high-capacity upgrade path that allows your hardware to grow alongside your sales.

50% Volume Increase: You can upgrade your system to a 4.5kg batch capacity. This represents a massive 50% increase in volume per roast cycle, utilising the same industrial-grade footprint.


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Category Details
Roasting Capacity Up to 15 kg/hour (3kg) / Up to 22kg/hr (4.5kg)
Roasting Time

9-11 minutes for full batch capacity
Roasting Principle

Air Roasting | From 80/20 to 30/70 convection/conduction heating ratio

Control Platform ProRoast AI with Odoo ERP integration
Heat Source LPG/Natural Gas premix burner
Power Supply 220V 1-Phase | 20A dedicated circuit
Automation Level Full automatic | Cloud updates | Remote monitoring
Sensors Included Up to 9 temperature & pressure sensors with safety interlocks
Optional Components Loader | Destoner | Afterburner***
Connectivity Wi-Fi | Ethernet | Cloud-linked data logging and OTA updates
Dimensions

Approx. 1,800mm(L) × 600mm(W) × 1,600 mm(H)(TBC)
Exhaust Dimensions

Roast Fan: Ø160mm | Cooling Fan: Ø160mm (TBC)
Feature Description
ProRoast AI Platform Learns from every roast and adjusts automatically for consistent results.
Real-Time Data Feedback Displays temperature, airflow, drum speed, and burner data live.
Gas, Airflow & Drum Control Maintains perfect heat transfer and precise roast development across all parameters.
Profile Replay Function Automatically reproduces saved roast profiles with exact parameter matching across multiple batches.
Touchscreen Interface 23" touch-screen, browser-based control screen for local or remote use.
Odoo ERP Connectivity Syncs roast data, production batches, inventory and maintenance logs directly with your Odoo dashboard.
Cloud Backup & Analysis Data upload enables remote diagnostics and global performance comparison.
Manual Override Mode Seamless switch to manual control for experienced operators. Doubles as backup controls during maintenance/breakdowns.
Automated Safety Routines Monitors critical systems with instant shutdown protection.
Control Type Function & Benefit

Gas Pressure Modulation (Heat)

  • 0–100% (1% increments)
Monitors burner gas line pressure for accurate, responsive PID control and flame stability. Doubles as a gas supply pressure monitor to detect empty gas bottles before starting a new roast.

Drum Speed (Drum)

  • 30-70 rpm (1 rpm increments)
Direct control of bean agitation and conduction exposure control.  Higher speeds allow the turbine-blade drum design to draw more air across the bean surface for increased convection heating.  Lower speeds induce more conduction heating to create earthier-tasting, full-bodied flavour profiles.

Air Speed (Air)

  • 0–200 Pa (2 Pa increments)
  • 20-40 Hz (1 Hz Increments)

Adjust the fan speeds to maintain specific Air Pressure or Fan Speed and increase/decrease convection heat transfer.  Higher fan speeds give more convection heating, which develops fruity, floral flavours.

Modes of Operation

(Software package dependent)

  • Manual
  • Copy
  • Step
  • Offset
  • Auto
  • AI

Dynamically change between modes in real-time during roasting:

  • Manual - Control all systems manually in 1% increments every 1 seconds.
  • Copy - Copies the parameters and settings used in the reference profile to the active roast.
  • Step - Change the step-size from the default 1 to 2, 5 or 10-step increments.
  • Offset - Set an offset on reference data. For example, if the reference air speed is 20Hz, add a 6Hz offset to the reference to maintain 26Hz and maintain the 6Hz offset if the reference profile.
  • Auto - Automatically adjust parameters based on real-time feedback. For example, if the BTA drops below the reference BTA, increase gas/fan speed automatically to pull the real-time BTA back onto the reference BTA with 0.2°C accuracy.
  • AI*** - The AI makes intelligent adjustments based on global fleet performance and Artificial Intelligence learning algorithms.
Sensor Type Function & Benefit
Up to 3x Bean Temperature Sensor (BMT)* Measures the Bean Mass Temperature (BMT) inside the drum (average across 3 precision-placed 3mm thermocouples) for precise, lag-free roast profiling and consistent flavour development. 
Exhaust Temperature Sensor (EX) Tracks thermal energy exiting the drum to balance energy efficiency, roast curve progression, and exhaust flow.

Inlet Temperature Sensor (IT)

Monitor the Inlet Temperature (IT) right before hot air enters the drum.  By measuring the IT, EX and BTA, operators can see how much energy enters and leaves the roasting drum.  This provides insight into heat transfer rather than just heat application.  IT = BTA + EX + Losses.
Cooling Tray Temperature Probe (CT)* Ensures efficient bean cooling to preserve flavour and consistency by controlling the cooldown process through measurable temperature instead of time.
Airflow Pressure Sensor (AP)* Detects real-time air pressure changes to optimise fan speed and maintain stable convection flow.  Doubles as a safety sensor to detect chimney blockages and convection/conduction heat transfer balance.

Hopper Green Bean Temperature (HT)*

By logging green bean temperature in the hopper, accurate charge-temperature and turn-point control is made possible to better account for starting energy and drying phase duration.

Chaff Cyclone Temperature (XT)*

Continuous measurement of chaff cyclone temperatures enables water quenching when needed and virtually eliminates chaff fire risks.

Heat Exchange Temperature (RT)***

In systems that have a Guild HECTO afterburner, the recouperative thermal energy is monitored and controlled.  This recovered energy is reintroduced into the roaster, resulting in drastically reduced gas consumption by reusing the otherwise lost thermal energy from the afterburning process.

Bucket Detection**

Proximity sensors detect if a bucket or Destoner is present to discharge beans into after roasting. If a bucket is detected, the relevant discharge doors will open automatically after the required bean cooldown temperature has been reached.

Environmental Sensors*

  • Ambient temperature (AT) - Compensates for room- and environmental variations, ensuring consistent results across seasons and climates.
  • Humidity Sensor - Logs the humidity in the room for seasonal changes
  • Barometric Pressure Sensor - Logs the height above sea level and barometric pressure

Weather Data**

Pulls in the day's weather data for your area to account for external, seasonal and weather changes.
Safety Limit Sensors Continuously monitor overheat, pressure (gas & air), motor performance and machine safety thresholds, automatically triggering safety interlocks when needed.
Feature Specification
Power Supply 220V Single Phase (Neutral + Earth)

Current

~10A Continous
~16A Intermittent

Voltage Requirement ±10% voltage tolerance | Frequency: 50/60Hz
Circuit Protection Dedicated 32A circuit | No Earth Leakage Device
Control System Power 24VDC low-voltage control system | Isolated from main supply
Safety Isolation Lockable main isolator near the roaster
Inverter / UPS Compatibility Compatible with clean power sources like inverters or generators
Feature Specification
Burner System Stainless steel premix gas burner | Fully modulating flame
Gas Type LPG (standard) or Natural Gas (optional) / Electric Element***
Burner Control PID-controlled via ProRoast AI for stable heat output
Premix Technology Optimal air-to-gas ratio ensures uniform combustion across the full range
Combustion Efficiency High thermal efficiency with low NOX emissions
Safety Devices Includes water quenching solenoid valve**, flame sensor, pressure switch, and emergency cutoff
Gas Pressure Range Supply: 1-3 bar | Automatic changeover system optional*
Afterburner Integration*** Seamless connection to Guild HECTO afterburner system***
Feature Specification
Machine Footprint (LxWxH) Approx. 3,200 mm × 2,800 mm x 2,900mm
Approx. Weight Approx. 1,800 kg (roaster + chaff cyclone)
Clearance Recommendation 500 mm clearance on all sides for maintenance
Installation Access Standard double-door entry (minimum 1.5 m width)
Loader Footprint* Approx. 1,200 × 800 mm footprint
Destoner Footprint** Approx. 1,200 × 1,200 mm footprint
Recommended Ceiling Height Min. 2.8 m recommended to accommodate ducting
Access and Service Space Allow unobstructed access for technicians during servicing

* Journeyman Series | ** Master Series | *** Future

Choosing the right Guild Roastery System for you

The Guild Roastery System is available in three professionally tailored configurations—Apprentice, Journeyman, and Master—each designed to match a different stage of growth in a modern specialty roastery. Whether you’re upgrading your capacity, expanding your production workflow, or building a fully automated roasting ecosystem, this comparison helps you quickly see what’s included in each package so you can choose the system that fits your business, your roasting style, and your long-term plans.

Feature Apprentice Journeyman Master
Best Fit For Capacity upgrade for a growing business. Throughput expansion for an established roastery. Fully automated workflow for high-volume production sites requiring advanced control.
Core Guild 6 Roastery System
Green Bean Loader 30
Destoner Mixer 90

Automation Hardware

  • Hopper Auto Charge
  • Hopper Auto Charge
  • Door Auto Drop
  • Hopper Auto Charge
  • Door Auto Drop
  • Cooling Bin Auto Discharge

Sensors

  • 1x Bean Thermocouple
  • Exhaust Thermocouple
  • Inlet Thermocouple
  • 3x Bean Thermocouple
  • Exhaust Thermocouple
  • Inlet Thermocouple
  • Cooling Bin Thermocouple
  • Hopper Green Bean Thermocouple
  • Chaff Cyclone Thermocouple
  • Environment Sensors
  • Air Pressure Sensor
  • 3x Bean Thermocouple
  • Exhaust Thermocouple
  • Inlet Thermocouple
  • Cooling Bin Thermocouple
  • Hopper Green Bean Thermocouple
  • Chaff Cyclone Thermocouple
  • Environment Sensors
  • Air Pressure Sensor
  • Weather Data
  • Bucket Detection
Odoo ERP Integration
ProRoast AI Platform

Maintenance Kit Included

Drum Water Quench

Cyclone Water Quench

Connectivity (WiFi + Ethernet)
OTA Software Updates

Touch Screen

23"

23"

23"

Customization

Frequently asked questions

Here are some common questions about our company.

The Guild is engineered for extreme flexibility. You can roast as little as 250g for high-end profile development without losing data integrity. The maximum capacity is a true 3kg or 4.5kg, depending on your configuration. Most importantly, if you start with the 3kg model, it can be upgraded to 4.5kg on-site as your production demands grow, saving you the cost of a full machine replacement.

Our machines are well-priced for the value that is included.  We do not share prices without getting some context about your needs first.  Once we understand how we can help your business, we present a solution to suit your needs.  This is part of our commitment and value offering.

Most roasters provide a curve; the Guild provides a Command Center. ProRoast AI links every physical component of your roaster to your Odoo ERP workspace in real-time. From the 23" integrated touchscreen, you can manage your website, respond to customer requests, and track sales without leaving the machine.

Production is handled via five distinct modes designed for total control:

  • Manual: 1% precision adjustments every second.

  • Copy: Mirror a reference profile’s exact parameters.

  • Step: Quickly toggle increments (1, 2, 5, or 10-step).

  • Offset: Apply a fixed offset (e.g., +6Hz air speed) to a reference profile.

  • Auto: Real-time AI correction that maintains your curve with 0.2°C accuracy by automatically adjusting gas and fan speeds.

No.  We give our customers the best service, and we can only do so through personal installation.  Your on-site installation and trail roasting activates your warranty.

You’ll need a dedicated electrical circuit, LPG or natural gas, and proper ventilation. We provide clear guidelines so your electrician and gas installer can prepare everything ahead of time.

Yes.  We have clients in over 42 countries around the world and love adding new countries to that list. 

Typically, we arrange all shipments and logistics on your behalf, up to the port of shipping (the shipping harbour where the ship docs).  From there, you or a local Clearing Agent can take over the final delivery.  We can deliver door-to-door, but it is generally more costly.

Yes, you will need a forklift and people to assist with moving the crates into position before uncrating and installation can happen.

Let’s Build Your Roastery Together.

Schedule a personal consultation to explore configurations, pricing, and delivery.  We take part in your plans and build a solution together.

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