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Manitowoc CVD0675 User Manual

Manitowoc CVD0675
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–76–
Automatic Shut-Off
7. Automatic Shut-Off
Ice Machine Section: When the storage bin is full at
the end of a Harvest sequence, the sheet of ice cubes
fails to clear the water curtain and will hold it open.
After the water curtain is held open for 7 seconds, the
ice machine shuts off. The ice machine remains off for
3 minutes before it can automatically restart.
CVD
®
Condensing Unit: The liquid line solenoid valve
closes, allowing the refrigeration system to pump
down. When the refrigerant pressure is low enough to
open the fan cycling pressure control,* the condenser
fan motor stops. When the refrigerant pressure is low
enough to open the low-pressure control, the contactor
coil is de-energized and the compressor stops.
The ice machine remains off until enough ice has been
removed from the storage bin to allow the ice to fall
clear of the water curtain. As the water curtain swings
back to the operating position, the bin switch recloses
and the ice machine restarts (steps 1-2), provided the
3-minute delay period is complete.
*The Q0600C ice machine does not use a fan cycle control;
therefore the condenser fan motor will energize and de-
energize with the compressor.

Table of Contents

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Manitowoc CVD0675 Specifications

General IconGeneral
ModelCVD0675
TypeUndercounter Ice Maker
Ice TypeCube Ice
Weight240 lbs
Daily Ice Production675 lbs
Condenser TypeAir-Cooled
RefrigerantR-404A
Voltage208-230V
Ice Production675 lbs per day
Dimensions (H x W x D)38.5" x 24" x 28"
Production Capacity675 lbs per day
Power Supply208-230V, 60Hz, 1Ph

Summary

Safety Notices

Warning

Alerts to potential personal injury situations. Read statement before proceeding.

Caution

Alerts to situations where equipment could be damaged. Read statement before proceeding.

Procedural Notices

Provides helpful information to assist with procedures.

Read These Before Proceeding

Caution - Installation and Maintenance

Emphasizes proper installation, care, and maintenance for optimal performance.

Important - Warranty

States that routine adjustments and maintenance are not covered by warranty.

Warning - Personal Injury Potential

Warns against operating equipment that has been misused or modified.

Model Numbers

Important - Sequence of Operation

Notes that ice machine sequences of operation may differ by model.

Ice Machine Warranty Information

OWNER WARRANTY REGISTRATION CARD

Warranty coverage begins the day the ice machine is installed.

Important - Registration

Advises to mail the registration card to validate the installation date.

WARRANTY COVERAGE

Parts Warranty

Details the warranty periods for ice machine parts.

Labor Warranty

Details the warranty periods for labor required for repairs.

Exclusions

Lists items and conditions not included in the warranty coverage.

Installation

LOCATION OF ICE MACHINE

Criteria for selecting the ice machine's location.

ICE MACHINE HEAD SECTION CLEARANCE REQUIREMENTS

Specifies clearance requirements for the ice machine head section.

LOCATION OF CVD® CONDENSING UNIT

Criteria for selecting the CVD® Condensing Unit's location.

CONDENSING UNIT CLEARANCE REQUIREMENTS

Specifies clearance requirements for the condensing unit.

ICE MACHINE HEAD SECTION WATER SUPPLY AND DRAINS

Potable Water Inlet Lines

Guidelines for installing potable water inlet lines.

Drain Connections

Guidelines for installing drain lines to prevent backflow.

ELECTRICAL REQUIREMENTS

QuietQube® Ice Machines and CVD® Condensing Units

General electrical requirements for ice machines and condensing units.

3 Phase Scroll Compressor Rotation

Verification of compressor rotation for 3-phase CVD2075 units.

Ice Machine Head Section Electrical Specs

Table detailing voltage, phase, cycle, breaker, and amps for head sections.

CVD® Condensing Unit Electrical Specs

Table detailing electrical specs for CVD condensing units.

Refrigeration Line Set Installation

LINE SET RISE OR DROP

Specifications for maximum rise and drop distances.

SUCTION LINE OIL TRAPS

Requirements for suction line oil traps based on rise.

CONNECT THE LINE SET TO THE ICE MACHINE HEAD SECTION

Procedure for connecting the line set to the ice machine head section.

Insulation Requirements

Specifies insulation thickness for suction and liquid lines.

Operational Checks

GENERAL Checks

Ensures proper operation by performing checks after installation or service.

WATER LEVEL Check

Procedure for checking and verifying the water level.

ICE THICKNESS CHECK

Procedure for checking and adjusting ice thickness probe.

Interior Cleaning and Sanitizing

CLEANING PROCEDURE

Detailed steps for performing a cleaning cycle.

SANITIZING PROCEDURE

Detailed steps for performing a sanitizing cycle.

Component Identification

ICE MACHINE HEAD SECTION Q0600C/Q0800C/Q1000C

Diagram and labels for the ice machine head section.

CVD® CONDENSING UNIT

Diagrams and labels for various CVD condensing units.

Q1400C

Diagram and labels specific to the Q1400C model.

Ice Making Sequence of Operation

Q0600C/Q0800C/Q1000C/SU1000C Sequence

Details the ice making sequence for these models.

Q1400C Sequence

Details the ice making sequence for the Q1400C model.

Electrical System

COMPONENT SPECIFICATIONS AND DIAGNOSTICS CONTROL BOARD

Features and diagnostics of the control board.

Safety Limits

Explanation of safety limit functions and their purpose.

BIN SWITCH Function and Check

Function, specifications, and procedure to check the bin switch.

ICE THICKNESS PROBE (HARVEST INITIATION)

How the Probe Works

Explanation of the electronic sensing circuit for ice thickness.

Ice Thickness Check

Procedure for checking and adjusting the ice thickness probe.

Diagnosing Ice Thickness Control Circuitry

Problem: No Harvest Cycle with Water Contact

Troubleshooting steps when the machine does not cycle to harvest.

WATER LEVEL CONTROL CIRCUITRY

FREEZE CYCLE WATER LEVEL SETTING

Description of the water level setting during the freeze cycle.

WATER INLET VALVE SAFETY SHUT-OFF

Safety feature limiting water inlet valve on-time.

DIAGNOSING AN ICE MACHINE HEAD SECTION THAT WILL NOT RUN

Troubleshooting Steps

General diagnostic steps for a head section not running.

COMPRESSOR ELECTRICAL DIAGNOSTICS

Check Resistance (Ohm) Values

Procedure for checking compressor winding resistance.

COMPRESSOR DRAWING LOCKED ROTOR

Diagnosing issues related to locked rotor condition.

COMPRESSOR DRAWING HIGH AMPS

Diagnosing issues related to high amperage draw.

ELECTRICAL DIAGRAMS

Ice Machine Head Section Diagrams

Electrical diagrams for various ice machine head sections.

Condensing Unit Diagrams

Electrical diagrams for condensing units (1-phase and 3-phase).

Refrigeration System

FREEZE CYCLE Operation

Description of the refrigeration cycle during freezing.

HARVEST CYCLE Operation

Description of the refrigeration cycle during harvest.

REFRIGERANT CHARGE

Undercharge Symptoms

Lists symptoms indicating an undercharged refrigerant system.

Overcharge Symptoms

Lists symptoms indicating an overcharged refrigerant system.

ICE MACHINE WILL NOT HARVEST DIAGNOSTICS

Harvest Cycle Diagnostic List

Checklist to diagnose issues preventing harvest.

ICE PRODUCTION CHECK

Installation/Visual Inspection Checklist

Checklist for installation and visual inspection of the machine.

Safety Limits

GENERAL Safety Limits

Introduction to built-in safety controls protecting the machine.

Safety Limit #1

Details Safety Limit #1 related to freeze cycle duration.

Safety Limit #2

Details Safety Limit #2 related to harvest cycle duration.

SAFETY LIMIT INDICATION

Procedures to determine which safety limit stopped the machine.

REFRIGERATION COMPONENT DIAGNOSTIC CHARTS

General Diagnostic Chart Usage

Instructions on how to use the refrigeration component diagnostic charts.

Single Expansion Valve Charts

Diagnostic charts for single expansion valves.

Dual Expansion Valve Charts

Diagnostic charts for dual expansion valves.

PRESSURE CONTROL SPECIFICATIONS AND DIAGNOSTICS

Headmaster Control Valve

Function and operation of the headmaster control valve.

DIAGNOSING AIR-COOLED CONDENSING UNITS

Freeze Cycle Diagnosis

Steps to diagnose units during the freeze cycle.

Harvest Cycle Diagnosis

Steps to diagnose units during the harvest cycle.

Refrigerant Recovery/Evacuation

RECOVERY/EVACUATION PROCEDURES

Detailed procedures for refrigerant recovery and evacuation.

SYSTEM CONTAMINATION CLEANUP

Determining Severity of Contamination

Steps to assess the level of system contamination.

Contamination Cleanup Chart

Chart detailing required cleanup procedures based on symptoms.

REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGE

Procedure

Steps for replacing pressure controls without refrigerant removal.

FILTER-DRIERS

Liquid Line Filter-Drier

Details and replacement part numbers for liquid line filter-driers.

Suction Line Filter

Details and replacement part numbers for suction line filters.

TOTAL SYSTEM REFRIGERANT CHARGE

Model and Charge Information

Table of refrigerant charges by model and line set length.

REFRIGERANT DEFINITIONS

RECOVER

Definition of refrigerant recovery process.

RECYCLE

Definition of refrigerant recycling process.

RECLAIM

Definition of refrigerant reclamation process.

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