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Manitowoc RFF Series User Manual

Manitowoc RFF Series
168 pages
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Part Number 000015433_05 3/21
Flake & Nugget Models
RFF/UFF/RNF/UNF Ice Machines
Technician’s Handbook

Table of Contents

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Manitowoc RFF Series Specifications

General IconGeneral
BrandManitowoc
ModelRFF Series
CategoryIce Maker
LanguageEnglish

Summary

Safety Notices

Installation

Installation Requirements

Criteria for selecting an appropriate installation location for the ice machine.

Potable Water Requirements

Guidelines for connecting the ice machine to a potable water supply.

Drain Connections

Specifications for proper drainage setup for the ice machine.

Ice Machine Clearance Requirements

Recommended clearances around the ice machine for optimal operation and service.

Electrical Service

VOLTAGE

Information on acceptable voltage variations for the ice machine.

FUSE/CIRCUIT BREAKER

Requirements for fuse or circuit breaker protection for the ice machine.

GROUND FAULT INTERRUPTER CIRCUIT (GFIC)

Recommendations regarding GFCI protection for the ice machine.

Maximum Breaker/Minimum Circuit Amperage Chart

RFF/RNF/UFF/UNF AIR-COOLED MODELS

Amperage and breaker chart for air-cooled RFF, RNF, UFF, UNF models.

RFF/RNF WATER-COOLED MODELS

Amperage and breaker chart for water-cooled RFF and RNF models.

Maintenance

Cleaning and Sanitizing

Procedures for cleaning and sanitizing ice machines, including specific instructions.

Exterior Cleaning

Instructions for cleaning the external surfaces of the ice machine.

Detailed Descaling and Sanitizing Procedure

Step-by-step guide for thorough descaling and sanitization of the ice machine.

Remedial Cleaning Procedure for Heavily Scaled Ice Machines

Steps to address severe scaling issues in ice machines.

Cleaning the Air Filter and Condenser

Guide on how to clean essential components for optimal machine performance.

Removal from Service/Winterization

Procedures for safely taking the ice machine out of service or preparing it for winter.

Sequence of Operation

Ice Making Sequence of Operation

Details the steps involved in the ice making process for various models.

UFF0200/UFF0350/UNF0200/UNF0300 OPERATION

Describes the operational sequence specific to these ice machine models.

RFF0320 & RNF0320 OPERATION

Outlines the operating sequence for RFF0320 and RNF0320 ice machine models.

RNF0620/RFF0620/RNF1100/RFF1300/RFF2500 OPERATION

Details the operating sequence for a range of RNF and RFF ice machine models.

Ice Production/Quality Check

QUALITY CHECK

General guidelines for checking ice quality based on ambient and water temperatures.

ICE PRODUCTION CHECK

Method for checking ice production capacity against charted values.

Thermostat Settings

Bin Thermostat

Information on the bin thermostat's function and adjustment for ice level control.

Evaporator Low Temperature Safety Thermostat

Function of the evaporator safety thermostat to prevent over-cooling.

Thermostat Setting Chart

A chart listing factory settings for bin and evaporator thermostats for various models.

Troubleshooting

UFF0200/UFF0350/UNF0200/UNF0300 Troubleshooting

Diagnostic steps for specific air-cooled ice machine models.

RFF0320/RNF0320 Troubleshooting

Troubleshooting guide for RFF0320 and RNF0320 self-contained air-cooled models.

RFF0620/RNF0620/RNF1100/RFF1300 Troubleshooting

Diagnostic steps for RFF/RNF self-contained air-cooled models.

RNF1020C/RFF1220C Troubleshooting

Troubleshooting for QuietQube models with remote condensing units.

RFF2500 Troubleshooting

Diagnostic steps for the RFF2500 self-contained air-cooled ice machine.

RNF2000C/RFF2200C Troubleshooting

Troubleshooting for QuietQube models with remote condensing units.

Refrigeration Troubleshooting

CAPILLARY TUBE MODELS

Troubleshooting specific issues related to capillary tube refrigeration systems.

THERMOSTATIC EXPANSION VALVE MODELS

Diagnostic guide for refrigeration issues in models with TXV systems.

Component Specifications

BIN THERMOSTAT

Technical specifications and settings for the bin thermostat component.

HIGH PRESSURE CUTOUT (HPCO) CONTROL

Cut-in and cut-out specifications for the high-pressure safety control.

ROTATION SENSOR

Details on the rotation sensor's operation and light indicators for faults.

LOW PRESSURE CUTOUT (LPCO) CONTROL

Specifications for the low-pressure safety control cut-in and cut-out points.

TOTAL SYSTEM REFRIGERANT CHARGE

Information on refrigerant quantities for various ice machine models.

FILTER-DRIERS

Importance and selection criteria for filter-driers in refrigeration systems.

Charts

Ice Production & Refrigerant Pressure

Guidelines for verifying ice production and refrigerant pressures.

Flake Models

Ice production and operating pressure charts for various flake ice machine models.

Nugget Models

Ice production and operating pressure charts for nugget ice machine models.

Diagrams

Wiring Diagrams

Electrical wiring diagrams for various ice machine models and components.

Compressor Start Component Wiring

Diagrams illustrating compressor start component wiring for different models.

Remote Condensing Units

Wiring diagrams for RCUF single-phase and three-phase condensing units.

Refrigeration Tubing Schematics

UNF0200/UFF0350 AIR-COOLED

Refrigeration tubing schematic for UNF0200 and UFF0350 air-cooled models.

RFF0320 AIR-COOLED

Refrigeration tubing schematic for RFF0320 air-cooled models.

RFF0620 AIR AND WATER-COOLED

Refrigeration tubing schematic for RFF0620 air and water-cooled models.

RNF1100 AIR AND WATER-COOLED

Refrigeration tubing schematic for RNF1100 air and water-cooled models.

RFF1300 AIR AND WATER-COOLED

Refrigeration tubing schematic for RFF1300 air and water-cooled models.

RFF2500 AIR-COOLED

Refrigeration tubing schematic for RFF2500 air-cooled models.

RFF1220C AND RCUF1200 CONDENSING UNIT

Tubing schematic for RFF1220C QuietQube head and RCUF1200 condensing unit.

RFF2200C QUIETQUBE HEAD SECTION AND RCUF2200 CONDENSING UNIT

Tubing schematic for RFF2200C QuietQube head and RCUF2200 condensing unit.

RNF1020C QUIETQUBE HEAD SECTION AND RCUF1000 CONDENSING UNIT

Tubing schematic for RNF1020C QuietQube head and RCUF1000 condensing unit.

RNF2000C QUIETQUBE HEAD SECTION AND RCUF2200 CONDENSING UNIT

Tubing schematic for RNF2000C QuietQube head and RCUF2200 condensing unit.

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