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Bunn SINGLE SH DBC User Manual

Bunn SINGLE SH DBC
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Page 29
NEW SPRAY FLOW
XX.X OZ/M
ENTER OZ XX.X
(-) DONE (+)
CALIBRATE FLOW?
NO YES
SPRAYHEAD CAL?
NO YES
CONTAINER RDY?
QUIT YES
CALIBRATE SPRAY
PRESSBREWSTART
CALIBRATE SPRAY
60 SEC TO FINISH
COUNTS DOWN
TO ZERO
AFTER 1 MINUTE
BREW PRESSED
EXIT TO THE
NEXT FUNCTION
SCREEN
CALIBRATE FLOW
This function allows the operator to enter the actual
flow rate of the sprayhead and the bypass by dispens-
ing both separately for one minute. The volumes are
then entered in ounces per minute. (Oz/M)
Procedures to calibrate the sprayhead flow rate:
1. Place a container, accurately graduated in ounces,
and with a minimum capacity of 60 ounces, beneath
the funnel on the brewer.
2. Press and hold the ® pad until the display reads
SET NEW RECIPES. Release the ® pad. Press and
release the ® pad until the display reads CALIBRATE
FLOW.
3. Press and release YES to advance to the SPRAY-
HEAD CAL? function screen. (Pressing NO in the
CALIBRATE FLOW screen will advance to the next
function screen, BREW COUNTERS).
4. Press and release the YES pad. The display should
read CONTAINER READY? If the container is under
the funnel, press YES. The display should read
CALIBRATE SPRAY .. PRESS BREW TO START.
5. Press and release the
pad. The display should
read CALIBRATE SPRAY .. 60 SEC TO FINISH. The
60 second timer on the display will count down to
zero. When the counter reaches zero, the display
will change to ENTER OZ., along with a number
measured in ounces per minute.
6. Measure the amount of water in the container and
using the (-) or (+) pads, adjust the amount on
the display to match the amount in the container.
Then press DONE.
7. The display should now read NEW SPRAY FLOW,
along with the correct flow rate of the sprayhead
in ounces per minute. After about 5 seconds,
the display will return to the CALIBRATE FLOW
screen.
8. To exit the CALIBRATE FLOW program, press NO
to advance to the next function screen, or press
the
pad located on the front switch panel to
exit the CALIBRATE FLOW function and return to
the MAIN SCREEN.
P2307
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
34025 022509

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Bunn SINGLE SH DBC Specifications

General IconGeneral
BrandBunn
ModelSINGLE SH DBC
CategoryCoffee Maker
LanguageEnglish

Summary

Commercial Product Warranty

Warranty Terms and Conditions

Details the warranty coverage, exclusions, and conditions for equipment.

User Notices and Safety Warnings

General Safety Precautions

Lists essential safety guidelines for operating the brewer, including electrical and general handling.

Warning Labels and Handling

Highlights specific warnings about hot components, electrical hazards, and proper handling.

Electrical Requirements and Hook-up

Electrical Hook-up Procedures

Provides instructions for connecting brewers without a pre-attached power cord and those with a cord.

Installation Requirements

CE and Plumbing Requirements

Outlines installation conditions for CE compliance and specifies water system requirements.

Operating Controls Overview

Main Controls and Switches

Describes the primary controls: ON/OFF, Batch Select, Brew, and Program switches.

Display and Sensor Interface

Details the Function Screen, hidden switches, and the Funnel Sensing Coil.

Initial Setup and Brewing

Initial Setup Steps

Guides through the initial setup process, including filling and heating the water tank.

Coffee Brewing Process

Outlines the steps for brewing coffee, from filter insertion to starting the brew cycle.

Brewer Programming Introduction

Programming Switches and Interface

Identifies the switches and interface elements used to access and navigate programming menus.

Brewer Programming - Level 1

Brew Lockout Function

Explains how to enable or disable brewing based on water temperature readiness.

Brewer Programming - Level 2 Methods

Programming Methods Overview

Details three methods for programming: Smart Funnel, Recipe Card, and No Accessories.

Setting New Recipes with Smart Funnel

Procedure to Set New Recipe

Step-by-step guide for creating new recipes using a Smart Funnel and compatible grinder.

New Recipe Programming - Volumes and Bypass

Setting Brew Volumes

Adjusting the amount of brew water dispensed for each batch size.

Setting Bypass Percentages

Adjusting the percentage of water that bypasses coffee grounds.

New Recipe Programming - Pulse and Drip Times

Setting Pulse Brew Times

Configuring the on/off timings for pulse brewing to fine-tune flavor.

Setting Drip Times

Adjusting the time from spray end to funnel emptying for drip-out.

Setting New Recipes with Recipe Card

Procedure to Program Coffee Name

Steps for loading coffee names and settings from a Recipe Card.

Setting New Recipes - No Smart Funnel

"No Name" Coffee Program Setup

Instructions for programming a default "No Name" coffee recipe without accessories.

Reviewing and Modifying Recipes

Review Recipes Procedure

Steps to view programmed coffee recipes and their settings.

Modify Recipes Procedure

Guide for changing existing recipe parameters like brew volumes.

Modifying Brew Volumes (Brew Oz)

Adjusting Brew Volumes

Detailed steps for modifying the dispensed brew water quantity for each batch.

Modifying Bypass Percentages

Adjusting Bypass Flow

Detailed steps for adjusting the percentage of water bypassing the coffee grounds.

Setting Pulse Brew Parameters

Pulse Brew Time Definitions

Explains the different timings involved in pulse brewing (1st ON, OFF, LAST ON).

Pulse Brew Methods

Describes two methods for setting pulse brew: 'By Example' and 'Enter Times'.

Setting Pulse Brew - By Example

Procedure for By Example Setting

Step-by-step guide to program pulse brew timings by observing water flow.

Setting Pulse Brew - Enter Times

Procedure for Enter Times Setting

Step-by-step guide to program pulse brew timings by manually entering values.

Setting Preinfusion Times

Preinfusion Time Settings

Configuring initial soaking time and delay before the main brew cycle.

Setting Drip Times

Drip Time Settings

Adjusting the time from spray end to funnel emptying for drip-out.

Brewer Settings - Ads and Temperature

Enable Ads Function

Option to enable or disable displaying advertising messages when the brewer is idle.

Set Brew and Ready Temperature

Adjusting brew water temperature and minimum ready temperature for brewing.

Brewer Settings - Refill and Flow Rates

Refill Sensitivity Adjustment

Modifying refill circuit sensitivity for different water conditions.

Flow Rate Settings (Oz/M)

Setting sprayhead and bypass nozzle flow rates in ounces per minute.

Calibrating Sprayhead Flow Rate

Sprayhead Calibration Procedure

Steps to calibrate the sprayhead's actual water flow rate.

Calibrating Bypass Flow Rate

Bypass Calibration Procedure

Steps to calibrate the bypass nozzle's actual water flow rate.

Brewer Counters and Funnel Detect

Brew Counters Function

Tracking completed brew cycles and resettable/life counters.

Funnel Detect Setup

Configuring the brewer to prevent brewing if the funnel is not properly positioned.

Brewer Detection and Service Tools

Server Detect Function

Configuring the brewer to prevent brewing if the server is not correctly positioned.

Service Tools Overview

Introduction to testing brewer components, switches, and server status.

Service Tools - Component Testing

Component Testing Procedures

Detailed steps for testing brew valve, bypass valve, funnel lock, server, refill valve, and tank heaters.

Service Tools - Switch and Frequency Testing

Switch and Server Testing

Procedures for testing front panel switches and server presence/removal.

Coil Frequency Testing

Diagnostic procedure for checking the funnel sensor coil frequency.

Factory Defaults Reset

Procedure to Set Factory Defaults

Steps to erase custom recipes and restore factory preset values.

Troubleshooting Guide

Error Messages and Basic Troubleshooting

General troubleshooting notes and resolution for Overflow Cup and Server Not In Place errors.

Troubleshooting - Funnel and Temperature Issues

Funnel and Temperature Error Resolution

Steps for resolving "No Funnel Present" and "Temperature Too Low" errors.

Troubleshooting - Brew Interruption and Heating

Brew Interruption and Heating Time Errors

Diagnosing brew interruptions and issues with prolonged heating times.

Troubleshooting - Fill Time and Sensor Issues

Fill Time and Temperature Sensor Errors

Resolving excessive fill times and temperature sensor connection/wiring problems.

Troubleshooting - Operation and Water Supply

Operation and Brew Start Issues

Steps for resolving equipment not operating or brew cycle not starting.

Refill and Water Supply Issues

Diagnosing automatic refill problems and water supply related errors.

Troubleshooting - Refill and Overflow

Refill and Overflow Troubleshooting

Addressing refill sensitivity, overflow conditions, and control board issues.

Troubleshooting - Water Flow and Heating

Water Flow and Heating System Issues

Diagnosing continuous water flow and problems with the heating system.

Troubleshooting - Heating Circuit and Lime Buildup

Heating Circuit and Lime Buildup Issues

Resolving heating circuit problems, triac defects, and lime buildup.

Troubleshooting - Beverage Level and Valve Issues

Beverage Level and Valve Performance

Addressing inconsistent beverage levels and issues with brew/bypass valves.

Troubleshooting - Beverage Volume and Filter

Beverage Volume and Filter-Related Issues

Correcting beverage volume, filter overflow, and weak beverage causes.

Troubleshooting - Recipe and Noise Issues

Recipe and Noise Troubleshooting

Addressing weak beverages due to incorrect recipes and unusual brewer noises.

Schematic Wiring Diagram - 120/208/240V

Control Board and Switch Assembly

Details the main control board connections and touch switch assembly layout.

Server Transformer and Power Input

Shows the server transformer connections and the main power input for single phase.

Schematic Wiring Diagram - 120V Single Phase

Control Board I/O and Solenoids

Illustrates control board connections to solenoids for refill, bypass, and brew.

Server Transformer and Touch Switches

Depicts the server transformer and the layout of touch switch assemblies.

Schematic Wiring Diagram - 230V Single Phase

Triac and Tank Heater Circuitry

Shows the triac, thermal fuses, and tank heater connections.

Control Board and Protection Switch

Details input/output connections on the control board and overflow protection switch.

Schematic Wiring Diagram - 200V Single Phase 50/60Hz

Funnel Sensor and Control Board Input

Illustrates funnel sensor input and various connections to the control board.

Server Transformer and Rectifier Circuit

Shows the server transformer, rectifier, and power supply connections.

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