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General| Manufacturer | Manitowoc |
|---|---|
| Model | QY0455W |
| Type | Ice Maker |
| Width | 30 inches |
| Refrigerant | R404A |
| Ice Storage | 0 lbs |
| Water Connection | 3/8 inch |
Details the model numbers and how to interpret them, including ice cube sizes.
Identifies where model and serial number decals are affixed to the unit.
Outlines the ice machine's warranty coverage, limitations, and authorized service requirements.
Covers general installation, machine dimensions, and location criteria for ice machine installation.
Covers electrical wiring, water supply, drain requirements, and cooling tower applications.
Details installation of remote condensers, line sets, and distance calculations.
Discusses using non-Manitowoc condensers and other advanced installation topics.
Provides comprehensive checklists for installation verification and remote model checks.
Identifies key components and outlines essential operational checks for the ice machine.
Details procedures for cleaning condensers, interior surfaces, and specific components.
Steps for removing ice machine parts for proper cleaning and sanitizing.
Covers water filtration, system removal/winterization, and cleaning/sanitizing technology.
Describes the start-up, freeze, harvest, and shut-off sequences for self-contained models.
Details the start-up, freeze, harvest, and shut-off sequences for remote ice machines.
Details the water system's operation during start-up, freeze, harvest cycles, and safety shut-offs.
Covers energized parts, wiring diagrams, and electrical sequences for models.
Details electrical sequences for self-contained and remote models during various cycles.
Wiring diagrams for various self-contained models based on phase and terminal board configuration.
Wiring diagrams for various remote models based on phase and terminal board configuration.
Details specifications and diagnostic procedures for key electrical components like fuses and switches.
Covers resistance checks, locked rotor, high amps, and capacitor diagnostics for compressors.
Explains PTCRs and their function in the compressor start sequence and provides checking procedures.
Details the function, specifications, and check procedure for the ICE/OFF/CLEAN toggle switch.
Explains probe function, harvest initiation, freeze time lock-in, and thickness checks.
Troubleshooting steps for diagnosing issues with the ice thickness control circuit.
Explains water level probe function and water control during freeze and harvest cycles.
Troubleshooting steps for water trough overfilling during the freeze cycle.
Troubleshooting steps for when water does not run into the sump trough.
Troubleshooting guide for diagnosing why an ice machine will not run.
Describes the refrigeration sequences for self-contained and remote models.
Schematics showing the refrigeration tubing for various self-contained and remote models.
Guidance on analyzing refrigeration system malfunctions and avoiding misdiagnosis.
Procedure for checking ice production and comparing it to published data.
Checklist for diagnosing potential water system problems affecting ice production.
Analysis of evaporator ice formation patterns to diagnose malfunctions.
Explains safety limits and provides checklists for diagnosing pressure and ice formation issues.
Procedures for analyzing discharge and suction pressures during freeze and harvest cycles.
Procedure for comparing evaporator inlet and outlet temperatures for diagnosis.
Procedure for checking harvest valve temperatures to diagnose leaks or other issues.
Procedure for analyzing discharge line temperature to diagnose refrigeration issues.
Guide on how to use operational analysis tables to diagnose refrigeration problems.
Tables to help diagnose refrigeration problems by comparing operating conditions and symptoms.
Explanation of the Harvest Pressure Regulating (H.P.R.) system for remote models.
Diagnostic steps for troubleshooting the HPR system.
Operation and diagnosis of the Headmaster control valve used in remote systems.
Procedure to verify if the ice machine is low on refrigerant charge.
Compares fan cycle control with Headmaster and explains their functional differences.
Specifications and diagnostic procedures for pressure controls like Fan Cycle and HPCO.
Procedures for refrigerant recovery, evacuation, charging, and system contamination cleanup.
Basic requirements for restoring contaminated refrigeration systems to reliable service.
Procedure for replacing pressure controls without removing refrigerant, saving time and cost.
Information on filter-driers and refrigerant charge amounts for various ice machine models.
Definitions of refrigerant terms and Manitowoc's policy on refrigerant re-use.
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