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Bunn ULTRA User Manual

Bunn ULTRA
44 pages
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BUNN
®
TECHNICAL TRAINING
Ultra
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Bunn ULTRA Specifications

General IconGeneral
BrandBunn
ModelULTRA
CategoryDispenser
LanguageEnglish

Summary

Unit 1 Installation

Site Requirements

Details space, plumbing (PAF and LAF), water treatment, and electrical requirements for machine installation.

Electrical Install

Instructions for connecting the machine to a 120VAC outlet, including circuit and receptacle requirements.

Unit 2 Setup

User Interface

Overview of the dispenser's menu-driven display and the function of operating and programming control switches.

Operating Controls

Explanation of the ON/OFF toggle switch and the Auger/Chill switches for controlling machine functions.

Programming Controls

Details on accessing programming mode and using the ULTRA, GOURMET, and ICE switches for navigation and selection.

Setup Machine Parameters

Key machine parameters to set for product turnover, including thickness, date/time, language, and maintenance reminders.

Set Thickness

Instructions for adjusting product thickness (ice consistency) using the machine's interface, with a range of 1 to 16.

Product Preparation

Start Up with LAF

Steps for starting up ULTRA 1 and 2 machines equipped with the Liquid Autofill (LAF) option, including switch operation and refill activation.

Unit 3 Machine Composition

Compressor Details

Information on the CSR motor type, capacitor ratings, refrigerant charge, and design pressure for the compressor.

Machine Function and Operations

Explanation of additions to the circuit board, install date feature, TIC connection, and user settings recording.

Mechanical System

Describes the auger motor, mixing, dispensing, and torque sensing system for product consistency.

Refrigeration System

Explains the cooling system, compressor/fan operation, delay times, and how thickness settings affect cooling.

Temperature Sensing System

Describes the thermistor's role in monitoring cooling drum temperature for Night and Chill modes.

Torque Sensing

Explains the torque sensing system using pins and springs to measure product thickness and control the compressor.

Unit 4 Preventive Maintenance

Shaft Seal Maintenance

Detailed steps for shaft seal maintenance, including removing/cleaning the auger shaft, installing new seals, and lubricating.

Unit 5 Troubleshooting

Service Tools Menu

Accessing the Service Tool menu to test individual components and outputs of the control board.

Test Outputs

Allows testing of specific components like auger motors, refrigerant valves, and refill circuits.

Temp and Torque Screen

Accessing the screen to monitor cooling drum temperatures and auger torque for operational diagnostics.

Torque Sensor Error

Flowchart for diagnosing Torque Sensor errors, covering auger turning, shaft pins, and sensor circuit checks.

Temperature Sensor Error

Flowchart for diagnosing Temperature Sensor errors, including shorted, open, and thermistor circuit checks.

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