Bunn JDF-2S User Manual

JDF-2S
JDF-4S
Silver Series®
INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.
44744.0002D 11/13 ©2012 Bunn-O-Matic Corporation

Bunn JDF-2S Specifications

General

Category	Coffee Maker
Product Type	Commercial Coffee Brewer
Manufacturer	Bunn
Model	JDF-2S
Voltage	120V
Material	Stainless Steel
Water Source	Plumbed
Power	120V
Capacity	2.5 gallons

Summary

Commercial Product Warranty

User Notices and Safety

Initial Set-Up Procedures

CE Compliance Requirements

Electrical System Requirements

Electrical Hook-Up Guide

Procedure for safely connecting the dispenser to the power supply.

Plumbing System Requirements

Door Cover Installation Guide

Plumbing Hookup Details

Initial Fill Process

Operating Controls Overview

Refrigeration Switch Function

Controls power to the water bath pump and compressor/condenser fan motor.

Mechanical Dispense Switches

Initiates product flow when pressed; stops flow when released.

Dispenser Use Instructions

Press and Hold Dispensing Method

Manual dispense method by holding the dispense button.

Portion Control Setup (Mechanical)

Procedure to set specific dispense volumes for mechanical models.

Portion Control Setup (Membrane)

Procedure to adjust preset dispense volumes for membrane models.

Cleaning and Preventive Maintenance

Daily Rinse and Parts Washing

Steps for daily rinsing of nozzles and washing removable parts.

Sanitization Procedures

Detailed steps for sanitizing the dispenser using approved solutions.

Monthly Condenser Coil Maintenance

Annual Maintenance Tasks

Adjustment and Settings

Water Flow Testing and Adjustment

Method for testing and adjusting water flow rate for proper mixing.

Pump Speed Adjustment Guide

Procedure to adjust pump speed for correct product ratio and brix.

Total Dispense Ratio Setup

Refractometer Brix Adjustment Method

Optional Cold Water Flow Adjustment

Dispenser Lockout Functionality

Function List: LED Indicators

JDF-2S Early Model LED Status

Explanation of LED colors and their meanings for JDF-2S early models.

JDF-4S/JDF-2S Late Model LED Status

Troubleshooting Common Issues

Cold Water Circulation Problems

Diagnosing and resolving issues with cold water circulation and dispense.

Refrigeration System Issues

Dispenser Lockout Resolution

Cooling System Failure Diagnosis

Dispense Station Not Responding

Concentrate-Only Dispensing Issues

Dispense Station Output Problems

Product Pump Malfunctions

Water Leak Identification and Repair

Spray Pattern and Dripping Nozzle Issues

Unit Failure and Beverage Quality Issues

Bag-in-Box System Leaks

Coolant Schematic Diagram

JDF-2S Wiring Diagram

JDF-4S Wiring Diagram

Quick Setup Guide