Manitowoc BG0260 Technician's Handbook
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Manitowoc BG0260 Technician's Handbook

Manitowoc BG0260 Technician's Handbook

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BG0260
Spray Cube
Technician's
Handbook
This manual is updated as new information and models are released.
Visit our website for the latest manual. www.manitowocfsg.com
America's #1 Selling Ice Machine
Part Number STH48 6/15

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Summary of Contents for Manitowoc BG0260

  • Page 1 BG0260 Spray Cube Technician’s Handbook This manual is updated as new information and models are released. Visit our website for the latest manual. www.manitowocfsg.com America’s #1 Selling Ice Machine Part Number STH48 6/15...

  • Page 3: Table Of Contents

    General Information Model Numbers ........5 BG0260A ..........5 Model/Serial Number ......5 Manitowoc Cleaner and Sanitizer ..5 Installation Location of Ice Machine ...... 7 Installation Requirements ....7 Potable Water Requirements ....8 Drain Connections ....... 8 Ice Machine Clearance Requirements 8 Electrical Service .........
  • Page 4 Total System Refrigerant Charge ..41 Filter-Driers .......... 42 Suction Cleanup Filter-Drier ....42 Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts ....43 BG0260A ..........44 Diagrams Wiring Diagram ......... 45 BG0260 ..........46 Refrigeration Tubing Schematics ... 47...

  • Page 5: General Information

    BG0260A MODEL/SERIAL NUMBER These numbers are required when requesting information from your local Manitowoc Distributor, or Manitowoc Ice. The model and serial number are listed on the MODEL/SERIAL NUMBER DECAL affixed to the ice machine. MANITOWOC CLEANER AND SANITIZER Manitowoc Ice Machine Cleaner and Sanitizer are available in 16 oz.
  • Page 6 This Page Intentionally Left Blank Part Number STH48 6/15...

  • Page 7: Installation

    Installation LOCATION OF ICE MACHINE The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • The location must be free of airborne and other contaminants. • The location must not be near heat-generating equipment or in direct sunlight.

  • Page 8: Potable Water Requirements

    (Check valves on sink faucets, dishwashers, etc.) • If water pressure exceeds maximum pressure (6 bar) obtain a water pressure regulator from your Manitowoc distributor. • A union for both the ice making and condenser water lines is required •...

  • Page 9: Electrical Service

    ELECTRICAL SERVICE Warning All wiring must conform to local and national codes. Voltage The maximum allowable voltage variation is ± 10% of the rated voltage on the ice machine model/serial number plate at compressor start-up. Fuse/Circuit Breaker A separate fuse/circuit breaker must be provided for each ice machine.
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  • Page 11: Operation

    Operation Ice Making Sequence of Operation Priming the Water system The water inlet valve on this machine energizes in the harvest sequence, therefore priming the system with water will allow the system to start up with a full reservoir of water. To prime system add 2 liters of water into the water trough.
  • Page 12 2. Harvest Cycle The compressor continues to operate and the water pump is de-energized. The harvest valve energizes, allowing hot gas to enter and warm the evaporator. The water valve is also energized, aiding with harvest, as well as filling up the sump with fresh water for a new freeze cycle.

  • Page 13: Thermostat Settings

    Evaporator Thermostat Small Numbers = Large dimple & lighter cubes Large Numbers = Small Dimple & heavier cubes Refer to chart for initial setting Thermostat Setting Chart Bin Thermostat Evaporator Model Setting Thermostat Setting BG0260 Part Number STH48 6/15...
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  • Page 15: Maintenance

    Maintenance Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more frequent cleaning and sanitizing, consult a qualified service company to test the water quality and recommend appropriate water treatment. An extremely dirty ice machine must be taken apart for cleaning and sanitizing.

  • Page 16: Cleaning & Sanitizing Procedure

    CLEANING & SANITIZING PROCEDURE Ice machine cleaner is used to remove lime scale or other mineral deposits. Sanitizer is used to remove algae or slime. Mix 4 liters of water with 500 ml of cleaner in a plastic or stainless container. Cleaner Water 16 oz (500 ml)
  • Page 17 Step 5 Depending upon the amount of mineral buildup, a larger quantity of solution may be required. Use the ratio in the table below to mix enough solution to thoroughly clean all parts. Solution Type Water Mixed With Cleaner 1 gal (4L) 16 oz (500 ml) cleaner Use 1/2 of the cleaner/water mixture to clean...
  • Page 18 Step 7 While components are soaking, use 1/2 of the cleaner/water solution to clean all foodzone surfaces of the ice machine and bin. Use a nylon brush or cloth to thoroughly clean the following ice machine areas: • Evaporator top panel •...
  • Page 19 Step 12 Replace all removed components. NOTE: Spray bar and nozzles. • If the nozzles were removed from the spray bar, take care to prevent cross threading when reassembling. • Verify the spray bar is correctly positioned and the nozzles are aligned to the evaporator cups.

  • Page 20: Cleaning The Condenser

    CLEANING THE CONDENSER Warning Disconnect electric power to the ice machine at the electric service switch before cleaning condenser. The condenser fins are sharp. Use care when cleaning them. Air-Cooled Condenser Clean the condenser at least every six months. Follow the steps below.

  • Page 21: Removal From Service/Winterization

    REMOVAL FROM SERVICE/WINTERIZATION ! Caution If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result. Damage of this nature is not covered by the warranty. Follow the procedure below. 1. Disconnect the electric power at the circuit breaker or the electric service switch.
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  • Page 23: Troubleshooting

    Troubleshooting Electrical Flowcharts Diagnostic troubleshooting for the ice machine involves following flowcharts that are dependant on symptoms of the failed machine. Follow the flowcharts for the failure symptom and model you are working on. NOTE: Refer to the sequence of operation to determine where in the sequence the ice machine has failed.

  • Page 24: Electrical Flowchart Ice Machine Will Not Run

    ELECTRICAL FLOWCHART ICE MACHINE WILL NOT RUN Start Power Supplied to Plug in Ice Machine, Reset Breaker Ice Machine? Toggle Switch in Move Switch to ON Posi on ON Posi on?
  • Page 25 Switch Replace Switch Illuminated? Bin Thermostat Ice Contac ng Adjus ng Closes Replace Thermostat Closed? Thermostat? Thermostat? Verify New Se ng Remove Ice – Allow Cycles Machine On/ to warm and retest Off...
  • Page 26 Line Voltage to Compressor Repair Wiring Contactor? Contacts Closed? Replace Contactor...
  • Page 27 Line Voltage to Repair Wiring Compressor? Verify: Compressor Overload is Closed, Start Components Func on...

  • Page 28: Will Not Cycle Into Harvest

    WILL NOT CYCLE INTO HARVEST Is the Evaporator Start Refer to Refrigera on Diagnosis Temperature below (Long Freeze Cycle) -7°F (-22°C) Is the Evaporator Thermostat Contacts Replace Evaporator closed between #3 & Thermostat Is there Voltage at Repair Wiring the Timer Motor...
  • Page 29 Is the mer motor turning Replace the Timer the cams? A er 25 Minutes of the Timer turning Cams Do the Cam Switches Switch and send voltage to Water Inlet valve and Hot Gas Solenoid Valve?
  • Page 30 Is the Water inlet Refer to: Ice Valve and Hot Gas Machine will Solenoid Valve not Harvest. Energized? Repair Wiring...

  • Page 31: Prematurely Cycles Into Harvest

    PREMATURELY CYCLES INTO HARVEST Is the Evaporator Start Refer to Refrigera on Diagnosis Temperature below (Long Freeze Cycle) -7°F (-22°C) Is the Evaporator Thermostat Contacts Replace Evaporator closed between #3 & Thermostat Is there Voltage at Repair Wiring the Timer Motor...
  • Page 32 Is the mer motor turning Replace the Timer the cams? A er 25 Minutes of the Timer turning Cams Do the Cam Switches Switch and send voltage to Water Inlet valve and Hot Gas Solenoid Valve?
  • Page 33 Is the Water inlet Refer to: Ice Valve and Hot Gas Machine will Solenoid Valve not Harvest. Energized? Repair Wiring...

  • Page 34: Refrigeration Troubleshooting

    Refrigeration Troubleshooting If the compressor is not energized refer to Electrical Troubleshooting Refer to Operational Pressure Charts for normal pressures and temperatures Low on Overcharge of Non Condensible in Restricted Capillary Refrigerant Refrigerant System Tube Discharge Pressure High High Suction Pressure High High Evaporator Inlet Temperature...

  • Page 35: Ice Production/Quality Check

    ICE PRODUCTION/QUALITY CHECK The amount of ice a machine produces directly relates to the operating water and air temperatures. This means an ice machine with a 68°F 20°C) outdoor ambient temperature and 50°F (10.0°C) water produces more ice than the same model ice machine with a 90°F (32°C) outdoor ambient and 70°F (21°C) water.
  • Page 36 WATER SYSTEM CHECKLIST A water-related problem often causes the same symptoms as a refrigeration system component malfunction. Water system problems must be identified and eliminated prior to replacing refrigeration components. Water area (evaporator) is dirty  Clean as needed Water inlet pressure not between 1.4 and 5.5 bar ...
  • Page 37 DISCHARGE PRESSURE HIGH CHECKLIST Improper Installation  Refer to Installation section of this manual Restricted Condenser Air Flow  High inlet air temperature  Condenser discharge air re-circulation  Dirty condenser fins  Defective fan motor Improper Refrigerant Charge  Overcharged ...
  • Page 38 FREEZE CYCLE DISCHARGE PRESSURE LOW CHECKLIST Improper Installation  Refer to Installation section of this manual Improper Refrigerant Charge  Undercharged  Wrong type of refrigerant Other  High side refrigerant lines/component restricted (before mid-condenser) Part Number STH48 6/15...
  • Page 39 SUCTION PRESSURE HIGH CHECKLIST Improper Installation  Refer to Installation section of this manual Discharge Pressure  Discharge pressure is too high, and is affecting suction pressure Improper Refrigerant Charge  Overcharged  Wrong type of refrigerant  Non Condensible in system Other ...
  • Page 40 SUCTION PRESSURE LOW CHECKLIST Discharge Pressure  Discharge pressure (ambient temperature) is too low, and is affecting suction pressure - Refer to Installation section of this manual Improper Refrigerant Charge  Undercharged  Wrong type of refrigerant Other  Restricted capillary tube ...

  • Page 41: Component Specifications

    Component Specifications THERMOSTAT SETTINGS Evaporator Thermostat Model Thermostat Setting Setting BG0260A FAN CYCLE CONTROL SETTINGS Model Cut-In (Close) Cut-Out (Open) 215 psi 230 psi BG0260A 1482 kPa 1586 kPa TOTAL SYSTEM REFRIGERANT CHARGE Important This information is for reference only. Refer to the ice machine serial number tag to verify the system charge.

  • Page 42: Filter-Driers

    FILTER-DRIERS The size of the filter-drier is important. The refrigerant charge is critical. Using an improperly sized filter-drier will cause the ice machine to be improperly charged with refrigerant. Important Driers are covered as a warranty part. The drier must be replaced any time the system is opened for repairs.

  • Page 43: Cycle Times/24-Hour Ice Production/Refrigerant Pressure Charts

    Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts These charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • Ice production checks that are within 10% of the chart are considered normal.This is due to three factors: 1.

  • Page 44: Bg0260A

    BG0260A SELF STORAGE AIR-COOLED Averages are used for calculations, characteristics will vary depending on your operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Harvest °/ Entering Water Temperature F °C Time Condenser 50/10 70/21...

  • Page 45: Wiring Diagram

    Diagrams Wiring Diagram The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine you are servicing. Warning Always disconnect power before working on electrical circuitry. Part Number STH48 6/15...

  • Page 46: Bg0260

    BG0260 Refer to Nameplate for Voltage Rating Part Number STH48 6/15...

  • Page 47: Refrigeration Tubing Schematics

    Refrigeration Tubing Schematics Compressor Condenser (air or water cooled) Liquid Line Drier Capillary tube Accumulator Heat Exchanger Evaporator Part Number STH48 6/15...
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  • Page 52 Manitowoc Ice 2110 South 26th Street, Manitowoc, WI 54221-1720, USA Ph:800-545-5720 Visit us online at: www.manitowocice.com © 2015 Manitowoc Part Number STH48 6/15...

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