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Manitowoc CNF201A User Manual

Manitowoc CNF201A
116 pages
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Part Number 000015432 4/18
Countertop Nugget
Ice Machines
CNF201 & CNF202
Technician’s Handbook

Table of Contents

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Manitowoc CNF201A Specifications

General IconGeneral
BrandManitowoc
ModelCNF201A
CategoryIce Maker
LanguageEnglish

Summary

Safety Notices

General Safety Precautions

Key safety instructions for operating, installing, and maintaining the ice machine.

Troubleshooting

SafeGuard Feature and Diagnostics

Explains SafeGuard feature, machine not running, and refrigeration diagnostics.

Component Check Procedures

Electrical Components

Checks for main fuse, toggle switch, float switch, and other electrical parts.

Refrigerant & System Procedures

Procedures for refrigerant recovery, evacuation, charging, and contamination cleanup.

Charts and Diagrams

System Diagrams

Wiring, control board, and refrigeration tubing schematics.

Installation Procedures

Electrical and Water Requirements

Requirements for electrical service and water supply/drains.

Operation

Ice Making Sequence

Detailed sequence of ice making operations, including startup and cycles.

Maintenance Procedures

Cleaning and Sanitizing

Procedures for heavily scaled, standard, and preventative cleaning.

Heavily Scaled Cleaning Procedure

Standard Cleaning Procedure

Sanitizing Procedure

Troubleshooting - SafeGuard Feature

Troubleshooting - Reset Procedure

Ice Machine Will Not Run Diagnostics

Analyzing Discharge Pressure

Analyzing Suction Pressure

Component Check Procedures (continued)

Component Check Procedures (continued)

Compressor Electrical Diagnostics

Diagnosing compressor electrical issues, resistance, and windings.

Compressor Locked Rotor Diagnostics

Diagnosing compressor locked rotor issues.

Diagnosing Start Components

Diagnosing compressor start components (capacitor, relay).

Refrigerant Recovery/Evacuation

Refrigerant Handling Procedures

Procedures for refrigerant recovery, evacuation, and charging.

Refrigerant Recovery/Evacuation (continued)

Recovery/Evacuation Procedures

Step-by-step procedure for recovery and evacuation.

Charging Procedures

Procedures for charging the refrigeration system.

System Contamination Clean-Up

Determining Severity and Cleanup

Assessing contamination severity and performing mild/severe cleanup.

System Contamination Clean-Up (continued)

System Contamination Clean-Up (continued)

Severe System Contamination Cleanup

Cleanup procedure for severe system contamination.

Replacing Controls Without Refrigerant Removal

CNF201 Performance Charts

CNF202 Performance Charts

Wiring Diagrams

Electronic Control Board Diagram

Refrigeration Tubing Schematic

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