Bunn JDF-4S 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-4S Specifications

General

Model	JDF-4S
Type	Dispenser
Material	Stainless Steel
Agitation	Yes
Power Source	Electric
Electrical	60 Hz

Summary

Installation and Operation Guide

User Notices and Safety Precautions

Critical safety warnings and operational notes for user protection.

Initial Setup and Requirements

Guidance on setup, clearance, electrical, and plumbing specifications.

Door Cover Installation

Step-by-step instructions for installing the dispenser door cover.

Plumbing Hookup and Initial Fill

Connecting the water supply and filling the dispenser's water bath.

Operating Controls Overview

Explanation of the dispenser's main controls and switches.

Dispense Switch Details

Specifics on membrane switches, lockout, and program switches.

Dispenser Use and Portion Control

How to use the dispenser and set portion control parameters.

Cleaning and Preventive Maintenance

Procedures for daily, monthly, and annual cleaning and maintenance tasks.

Maintenance Schedules

Guidelines for monthly and annual maintenance activities.

Adjustment and Optional Settings

Procedures for adjusting water flow, pump speed, and brix.

Total Dispense Ratio Setup

Method for confirming and adjusting the total dispensed volume.

Brix Adjustment and Lockout

Adjusting brix using a refractometer and using the dispenser lockout function.

Function List and LED Indicators

Explanation of circuit board LED indicators for diagnostics.

Circuit Board LED Indicators (JDF-4S/Late JDF-2S)

Interpretation of LED indicators for specific dispenser models.

Troubleshooting Guide

Comprehensive guide to diagnose and resolve common dispenser problems.

Refrigeration and Lockout Troubleshooting

Diagnosing refrigeration issues and dispenser lockout conditions.

Dispense Station and Concentrate Issues

Troubleshooting non-working stations and concentrate-only dispensing.

Pump, Solenoid, and Water Issues

Resolving problems with pumps, solenoids, and water-only dispensing.

Water Leaks and Spray Problems

Addressing water leaks, erratic spray, and dripping nozzles.

Unit Malfunctions and Brix Problems

Diagnosing unit failures and issues affecting beverage brix quality.

Coolant Schematic Diagram

Diagram illustrating the refrigerant flow within the cooling system.

JDF-2S Wiring Diagram

Electrical schematic for JDF-2S dispenser models.

JDF-4S Wiring Diagram

Electrical schematic for JDF-4S dispenser models.

Quick Setup Guide

Essential steps for a rapid and correct initial installation.