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Welbilt Multiplex FreshBlender Service Manual

Integrated beverage systems
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FreshBlender
™
Integrated Beverage Systems
Service Manual
This manual is updated as new information and models are released. Visit our website for the latest manual
www.welbilt.com
Part Number REV00 04/08/2020

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Summary of Contents for Welbilt Multiplex FreshBlender

  • Page 1 FreshBlender ™ Integrated Beverage Systems Service Manual This manual is updated as new information and models are released. Visit our website for the latest manual www.welbilt.com Part Number REV00 04/08/2020...
  • Page 2 Safety Notices Read These Before Proceeding As you work on Welbilt equipment, be sure to pay close Caution attention to the safety notices in this manual. Disregarding the notices may lead to serious injury and/or damage to the Proper installation, care and maintenance are essential equipment.
  • Page 3 Warning Warning Do not operate equipment that has been misused, When using electric appliances, basic precautions must abused, neglected, damaged, or altered/modified always be followed, including the following: from that of original manufactured specifications. This Read all the instructions before using the appliance is not intended for use by persons (including appliance.
  • Page 4 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 5: Table Of Contents

    Table of Contents Section 1 General Information Model & Serial Numbers ....................9 How to Read a Model Number ......................9 Serial Number Location ........................9 Warranty Information ......................9 Specifications ........................10 Dimensions ............................10 Capacity & Weight ..........................10 Product Delivery Location ....................11 Electrical..........................12 Drain Connections ..........................
  • Page 6 Table of Contents (continued) Section 4 Maintenance General Maintenance .......................25 Daily, Weekly, Monthly ........................25 Quarterly & Biannual .......................... 25 Annual, Shutdown & Start-up ......................25 Door Gasket Maintenance ....................... 26 Refrigerators ............................26 Stainless Steel Care & Cleaning ...................... 26 Doors/Hinges ............................
  • Page 7 Table of Contents (continued) Section 6 Controls Touch Screens ........................49 Main Select to Start Screen ......................49 Drink Selection Screen ........................50 Flavor Selection Screen ........................51 Confirmation Screen .......................... 52 Size Screen ............................. 53 Employee, Managers, & Service Menu Screens ................ 55 Product Inventory Screen .........................
  • Page 8 Table of Contents (continued) Temperature Thermistor - Nozzle & Cabinet probes only............. 77 Duct Fan Motor ............................ 78 Condenser Fan Motor ........................78 Refrigerant Recovery/Evacuation ...................78 Self-Contained Model Procedure ....................78 System Contamination Clean-Up ..................81 General ..............................81 Determining Severity Of Contamination ..................81 Cleanup Procedure ..........................

  • Page 9: Model & Serial Numbers

    Welbilt factory. FoeshBleadeo Beveotge SysreIs FB081TF No equipment may be returned to Welbilt without a written Return Materials Authorization (RMA). Equipment returned without an RMA will be refused at Welbilt’s dock and HOW TO READ A MODEL NUMBER returned to the sender at the sender’s expense.

  • Page 10: Dimensions

    General Information Section 1 Smecifictripas DMENSONS Fopar View Side View Reto View 20.26" (52 cm) 40.13" (102 cm) 38.79" (99 cm) 3.08" (8 cm) 78.53" (200 cm) 35.73" (91 cm) 19.04" (48 cm) 54.35" (138 cm) Wtoaiag To avoid instability the installation area must be capable of supporting the weight of the equipment and a full bin of ice.

  • Page 11: Product Delivery Location

    Section 1 General Information Popducr Deliveoy Lpctripa The location selected for the FreshBlender Beverage System must meet the following criteria. • The air temperature must be at least 40°F (4°C), but must not exceed 90°F (32°C), climate class 4. • The location must not be near heat-generating equipment or in direct sunlight and must be protected from weather.

  • Page 12: Specifications

    General Information Section 1 Elecroictl Wtoaiag All wiring must conform to local, state and national codes. MiaiIuI Ciocuir AImtciry Gopuadiag asroucripas The minimum circuit ampacity is used to help select the Wtoaiag wire size of the electrical supply. (Minimum circuit ampacity The machine must be grounded in accordance with is not the FreshBlender Beverage System’s running amp national and local electrical codes.

  • Page 13: Drain Connections

    Section 1 General Information Wtreo RequioeIears DRAN CONNECTONS Mpdels FB081TF Wtoaiag Connect to a potable filtered water supply only. SUPPLY CONNECTONS Plain Water IN Quick Connect PN: WBL-96-087 Drain OUT (11/2 NPS Male) PVC Drain with Air Gap Dotia RequioeIears •...

  • Page 14: System Pressures

    General Information Section 1 SYSTEM PRESSURES REGULATOR SETTNGS & LOCATON Wtreo Summly rp rhe Uair Mpdels FB081TF NOTE: The regulator is located behind the left side panel. Wtoaiag Do not supply more than 80 psi (0.551 MPa , 551 kPa, 5.51 bar) Plain or Carbonated Water to the unit, excessive pressure to product pumps may cause failure.

  • Page 15: Installation

    Installation & Start-up Overview PRE-INSTALLATION CHECKLIST These instructions are provided as an overview to assist the qualified installer. Contact your Welbilt Service Agent or call Keep product bags thawing in a cooler at least 24 Welbilt for information regarding start-up services.

  • Page 16: Connections

    Installation Section 2 CONNECTIONS See “Product Delivery Location” on page 11 Drain IIportant See “Drain Connections” on page 13 Leave enough slack in the water and drain lines to allow access to the rear of the machine without disconnecting the lines. Check regulator and set water pressure.

  • Page 17: Software

    Section 2 Installation SOFTWARE Clean & Sanitize 1. Verify correct UI version, firmware, drink menu, and 2. Perform Weekly Cleaning on the Fresh Blends machine flavors are available. by entering the one of the following screens, Employee, Manager, or Service Menu. NOTE: The these screens are hidden and will require a password.

  • Page 18: Post Installation Checklist

    Installation Section 2 POST INSTALLATION CHECKLIST Has the machine been properly sanitized? Has each flavor been installed and primed? Has the plain water regulators been correctly set during flowing conditions? Is the machine cycling ON/OFF on the temperature control? Has the owner/operator been instructed regarding maintenance procedures? Has the owner/operator completed the warranty registration card?

  • Page 19: Operation

    Section 3 Operation External Component Identification Power Switch Front Panel Touch Screen Keyed Lock Product Clear Splash Dispense Area Shield & Blending Drink Shuttle Area & Rail Refrigerated Cabinet Door Product Bins (Inside Cabinet) Sequence of Operation NORMAL OPERATION Drink Selection screen appears after power-up of the The machine blends the drink for the correct time at the unit.

  • Page 20: Product Dispense Operation

    Operation Section 3 PRODUCT DISPENSE OPERATION ICE MAKING The sequence varies according to the recipe. Some recipes will Main Power Switch - Front Top Right of the Unit use one ingredient, others will use multiple ingredients. The sequence below uses one ingredient to simplify the sequence. Power Switch Prerequisites:...
  • Page 21 Section 3 Operation INITIAL START-UP Default Ice Maker Settings Applying power and/or moving the rocker switch from OFF to ON will start a 15 minute delay period. This delay period can not be overridden. With the water sensing switch closed (reservoir full of water) the gear motor will energize at the end of the 15 minute time delay.

  • Page 22: Refrigerated Cabinet Operation

    Operation Section 3 Normal Operations REFRIGERATED CABINET OPERATION Default temperature set point = 1.1°C / 34° F with a 2.2°C / The microprocessor control board controls the cabinet 4° F Differential. temperature based on the input received from the cabinet Default Cabinet Settings temperature thermistor.

  • Page 23: Fault Conditions

    Section 3 Operation Fault Conditions ICE CHUTE SWITCH LOW WATER SHUTDOWN If during the ice making cycle the water drops to a point When the ice chute switch opens during the ice making where the low float switch is open for 5 continuous seconds cycle for 5 continuous seconds.
  • Page 24 Operation Section 3 THIS PAGE INTENTIONALLY LEFT BLANK Part Number REV00 04/08/2020...

  • Page 25: Maintenance

    Section 4 Maintenance General Maintenance QUARTERLY & BIANNUAL This section covers common unit components and their care. The chart below is an overview of the maintenance Maintenance 3 Months 6 Months that the end user and service technician should perform, Blender / Dispense Area and the frequency.

  • Page 26: Door Gasket Maintenance

    Maintenance Section 4 Warning IIportant Never Use Steel Pads, Wire Brushes or Scrapers! Disconnect power to the unit before performing any service or maintenance functions. Cleaning solutions need to be alkaline based or non- IIportant chloride cleaners. Any cleaner containing chlorides will If the machine going to be shutdown for any length damage the protective film of the stainless steel.

  • Page 27: Doors/Hinges

    Section 4 Maintenance DOORS/HINGES OTHER MONTHLY TASKS Air Filters Over time and with heavy use, doors and hinges may become loose. If this happens, tighten the screws that Each month check the air filters to be sure they are clean mount the hinge brackets to the frame of the unit.

  • Page 28: Daily Cleaning - Zone 1

    Maintenance Section 4 Daily Cleaning - Zone 1 Cleaning the Condenser Coil In order to maintain proper refrigeration performance, the Zone 1 daily cleaning is accessed through the cleaning condenser fins must be cleaned of dust, dirt and grease screen. The Cleaning screen appears after selected from the regularly.

  • Page 29: Weekly Cleaning - Zone 2

    Section 4 Maintenance Weekly Cleaning - Zone 2 Ice Maker Sanitizing & Descaling - Zone 3 & 4 Zone 2 weekly cleaning is accessed through the cleaning Sanitizing is recommended every six (6) months. More screen. The Cleaning screen appears after selected from the frequent sanitizing or descaling may be required in some Main Menu or when prompted to perform routine cleaning.

  • Page 30: Annual Planned Maintenance

    Maintenance Section 4 Annual Planned Maintenance The following parts are recommended for annual planned maintenance replacement to ensure optimum unit performance and minimize downtime: • Refrigerator door gasket (cleaning may be sufficient) • Two (2) #6 O-rings for the water and CIP hose quick connect lines •...

  • Page 31: Troubleshooting

    Section 5 Troubleshooting Store Manager Level The checklist below can be used by a store manager or used to verify a manager has done before calling service. Routine adjustments and maintenance procedures are not covered by the warranty. BEFORE CALLING FOR SERVICE CHECKLIST Symptom Possible Cause Corrective Action...
  • Page 32 Troubleshooting Section 5 Symptom Possible Cause Corrective Action Cabinet temperature is Thermostat set too high. Set thermostat to lower temperature. too high Evaporator Fan(s) will not operate or fan Call for service. blade is off or spinning on shaft. Excessive amount of warm product placed Allow adequate time for product to cool down.

  • Page 33: Technician Level

    Section 5 Troubleshooting Technician Level This troubleshooting is to be used only by qualified service technicians. Error Log Messages Part Number REV00 04/08/2020...

  • Page 34: Control System

    Troubleshooting Section 5 CONTROL SYSTEM Will Not Run Diagnostics 13. 24 VDC on Motor Controller Board MTA2 (J1)? Warning - No - Replace wire. High (line) voltage is present when the back and side - Yes - Go to next step. panels are removed.

  • Page 35: Ice System Troubleshooting

    Section 5 Troubleshooting ICE SYSTEM TROUBLESHOOTING ROTATION SHUTOFF During the ice making cycle if the rotation of the gear • Ask these questions before beginning service: motor is out of range for more than 5 seconds, the rotation • When does the ice system malfunction? (Normal sensor will deactivate and stop the gear motor and operation, after a cleaning cycle, etc.) compressor.

  • Page 36: Water System Checklist

    Troubleshooting Section 5 WATER SYSTEM CHECKLIST ICE PRODUCTION & QUALITY CHECK Ice Production A water-related problem could cause component misdiagnoses. Water system problems must be identified 1. Empty the ice from the unit by starting Zone 3 cleaning and eliminated prior to replacing other components. which dumps ice for 4 minutes.

  • Page 37: Discharge Pressure High Checklist

    Section 5 Troubleshooting DISCHARGE PRESSURE HIGH CHECKLIST SUCTION PRESSURE HIGH CHECKLIST Air Condenser Improper Installation • Dirty condenser filter • Refer to “Installation/Visual Inspection Checklist” Discharge Pressure • Dirty condenser fins • Discharge pressure is too high and is affecting suction •...

  • Page 38: Blender Controls Flowchart

    Troubleshooting Section 5 BLENDER CONTROLS FLOWCHART Power Supply High Voltage Input Check high Check high voltage Replace the Check +24 VDC input Check high voltage Is between Check +24 VDC Is between voltage input input between J5 and Is between Is between interconnec ng voltage at J1 of Le...

  • Page 39: Blender Controls Flowchart (Continued)

    Check high voltage Check high voltage Check high voltage Check high voltage Is the "LEFT Is between between J2 of Le between the power Is between between J2 of Le Is between output between J2 and BLADE" Motor 60 and 250 Blender/Mixer board and 60 and 250 60 and 250...

  • Page 40: Ice Machine Troubleshooting Flowchart

    Troubleshooting Section 5 ICE MACHINE TROUBLESHOOTING FLOWCHART Yes = Continue No = Check Remedy Ice machine rocker switch in ice position? There is an independent switch for the ice Move rocker switch to on position, refer to machine rocker switch diagnostics Energized lights on ice machine control Check for power to 55 &...

  • Page 41: Refrigerated Cabinet

    Section 5 Troubleshooting Refrigerated Cabinet REFRIGERATED CABINET FLOWCHART Power Supplied? Plug In, Reset Breaker Switch In ON Position? Move Switch To ON Position Touch Screen Refer To Touch Screen Diagnostics Energized? Evaporator Fans Power To Fan Motor? Shaft Turns? Replace Motor Energized? Repair Wiring Replace Fan Blade...
  • Page 42 Troubleshooting Section 5 REFRIGERATED CABINET FLOWCHART (CONTINUED) Verify: Compressor Overload Does Not Open Start Components Function Condenser Fan Motor Functions Compressor Runs Voltage Is Within 10% Of Nameplate Continuous? Clean The Condenser Coil Restricted Clearances High Ambient Ice On Evaporator Coil Or Restricted Airflow Check: Temperature Set Too Low Ice On Evaporator Coil...

  • Page 43: Ice Machine Electrical Flowchart

    Section 5 Troubleshooting ICE MACHINE ELECTRICAL FLOWCHART Power to ice Monitor for the “fault” conditions machine during Ice making. Start 3 minute timer for “Min. Run time” Check Inputs Begin 15 minute Has there been a Power interrupt main power interrupt delay.
  • Page 44 Troubleshooting Section 5 SRB LOGIC - ICE MACHINE START-UP Full Bin (Bin Level Open) Ice Dispensed Count accumulated ice pucks since full bin Is puck count equal to or greater than 30? Is bin level switch closed? BIC unit calling for ice Is bin level Reset puck counter switch open?

  • Page 45: Reach-In Temperature Out Of Range

    Section 5 Troubleshooting REACH-IN TEMPERATURE OUT OF RANGE Check Refrigeration System & Door Seal Temperature in reach-in unit above or below acceptable • Touch Service Inputs > Temperatures to view current limits. temperature readings. Above temperature limit: • Verify Cabinet temperate is above 5.5°C/42°F. •...

  • Page 46: High Product Temperature

    Troubleshooting Section 5 Check Thermistor SPECIFICATIONS • 5,000 Ohms ± 2% at 25°C (77°F) • 16,330 Ohms ± 2% at 0°C (32°F) NOTE: These values are only for the white probes that go to the Syrup Storage and Syrup Nozzle probes. The Blue Evaporator Probe has a different resistance range.

  • Page 47: Refrigeration System Diagnostics

    Section 5 Troubleshooting Refrigeration System Diagnostics REFRIGERATION SYSTEM CHECKLISTS ANALYZING DISCHARGE PRESSURE OR TEMPERATURE 1. Determine the ice machine operating conditions: INSTALLATION/VISUAL INSPECTION CHECKLIST • Air temperature entering condenser Inadequate Clearances • Air temperature around ice machine • Check all clearances on sides, back and top. •...

  • Page 48: Analyzing Suction Pressure Or Temperature

    Troubleshooting Section 5 Water System Checklist ANALYZING SUCTION PRESSURE OR TEMPERATURE NOTE: Analyze discharge pressure/temperature before A water-related problem often causes the same symptoms analyzing suction pressure/temperature. High or low as a refrigeration system component malfunction. discharge pressure/temperature may be causing high Water system problems must be identified and eliminated or low suction pressure/temperature.

  • Page 49: Controls

    Section 6 Controls Touch Screens The main user screen is for the drink making procedure: Drink Selection displays by default at start-up. The Service and Manager’s Menu for accessing the machine’s settings is hidden and password protected. Inventory, Cleaning, and other Service oriented screens are also available through the password protected area.

  • Page 50: Drink Selection Screen

    Controls Section 6 DRINK SELECTION SCREEN The category screen is the start of the drink making procedure. The Drink Selection screen appears after the Touch to Start icon has been touched. The Drink Selection screen’s primary function is to select a drink category and start the drink making process. PLeaSe SelEct a caTegOry of yoUr ChoIce!

  • Page 51: Flavor Selection Screen

    Section 6 Controls FLAVOR SELECTION SCREEN The Flavor Selection screen appears after a Drink Selection has been made. Flavor options will vary depending on what recipes are configured on the unit. This screen’s primary function is to select a drink flavor. $2.99 $2.99 $2.99...

  • Page 52: Confirmation Screen

    Controls Section 6 CONFIRMATION SCREEN The Confirmation screen appears after a drink flavor has been chosen from the Flavor Selection screen. This screen’s primary function is to verify the customer’s drink choice. Optional Add-Ins are also performed through this screen if the drink requires them.

  • Page 53: Size Screen

    Section 6 Controls SIZE SCREEN The Size screen appears after a drink flavor has been confirmed from the Confirmation screen. This screen’s primary function is to select size and make a drink. Icon Button Descriptions Dispensing & Blending Screens IT’s fiNisHed! BLenDing…...
  • Page 54 Controls Section 6 Procedure to Make a Drink NOTE: Ice must be present in the ice hopper, product must be connected and primed to produce a drink. 1. The Drink Selection screen displays after touching 5. The Size screen appears after a drink flavor has been Touch to Start.

  • Page 55: Employee, Managers, & Service Menu Screens

    Section 6 Controls EMPLOYEE, MANAGERS, & SERVICE MENU SCREENS Accessed though the main start screen, this screen’s primary function is to provide access to cleaning, bag change procedures and other functions specific to the user accessing them. Only certain functions can be performed on the unit by an employee, manager or service technician.

  • Page 56: Product Inventory Screen

    Controls Section 6 PRODUCT INVENTORY SCREEN This screen’s primary function is to provide visual product inventory information for the user. The Product Inventory screen is normally accessed through the Main Menu. The inventory screen visually displays levels for all flavors. Underneath each flavor is the time remaining until the flavor expires in days.

  • Page 57: Assigning Flavors

    Section 6 Controls ASSIGNING FLAVORS Accessed though the main start screen, this screen’s primary function is to provide access to all other procedures and adjustments that can be performed by a manager on the unit. It takes a special touch sequence to access and is password protected. Enter Password 3.
  • Page 58 Controls Section 6 Procedure to Install a Product Bag This is done through the Employee, Managers, or Service 7. Slide the loaded product bin into it’s slot in the lower Screen options. refrigeration cabinet and latch into place. 1. Enter the Employee, Managers, or Service menu. See NOTE: Do not force the latch over the pump, if the latch “Employee, Managers, &...

  • Page 59: Product, Ice, & Water Calibration

    Section 6 Controls PRODUCT, ICE, & WATER CALIBRATION Gather the following supplies Important Digital Scale Set to ounces Allow cabinet to reach operating temperature 34°F – 38°F (1°C – 3°C) before calibrating. Calibration will be Empty & Clean Cups inaccurate if performed above operating temperatures. Pre-calibration Checklist If calibrating ice verify bin is at least half full.

  • Page 60: Shuttle Calibration

    Controls Section 6 SHUTTLE CALIBRATION This is done through the Employee, Managers, or Service Screen options. • Enter the Employee, Managers, or Service menu. 1. Select the CALIBRATION button. 2. Select Shuttle Calibration. Part Number REV00 04/08/2020...

  • Page 61: Cleaning Instructions Screen

    Section 6 Controls CLEANING INSTRUCTIONS SCREEN The Cleaning screen appears after selected from the Main Menu or when prompted to perform routine cleaning. This screen’s primary function is to perform routine cleaning and sanitation of the machine. How to Access This is done through the Employee, Managers, or Service Screen options.

  • Page 62: Other Operations

    Controls Section 6 Other Operations LOADING NEW MENU RECIPES MANUAL LOCKOUT How to Access How to Access This is done through the Managers or Service Screen This is done through the Managers or Service Screen options only. options only. 1. Enter the Managers or Service menu. 1.

  • Page 63: Service Inputs

    Section 6 Controls SERVICE INPUTS MACHINE ID How to Access How to Access This is done through the Managers or Service Screen This is done through the Managers or Service Screen options only. options only. 1. Enter the Managers or Service menu. 1.

  • Page 64: Logs

    Controls Section 6 LOGS How to Access This is done through the Managers or Service Screen options only. 1. Enter the Managers or Service menu. 2. Select the LOGS button. SUBSYSTEM VERSION INFO How to Access This is done through the Managers or Service Screen options only.

  • Page 65: Component Check Procedures

    Section 7 Component Check Procedures Control System ON/OFF ROCKER SWITCH POWER RELAY Location Location The ON/OFF switch is located on the left side of the unit Located behind the left-hand side panel. when viewing from the front. Function Function Removes full load amperage of components and motors Supplies power to the Blender components.

  • Page 66: Fan Cycle Control

    Component Check Procedures Section 7 FAN CYCLE CONTROL ICE CHUTE SWITCH Function FUNCTION Cycles the fan motor on and off to maintain proper When the storage bin is full, the ice contacts the paddle operating discharge pressure. and holds the switch open. After the switch is open for 5 continuous seconds, the ice machine shuts off and a15 The fan cycle control closes on an increase, and opens on a minute delay period starts.

  • Page 67: Blender Control Board

    Section 7 Component Check Procedures BLENDER CONTROL BOARD Location Blender Board connections: Each blend chamber has a dedicated Blender Control Board. • J5 (N) / J6 (L1) - 230 VAC The Blend Chamber Assembly needs to be separated from • J2 (N) / J7 (L1) - 230 VAC the frame in order to access the blender control board.

  • Page 68: Beverage Components

    Component Check Procedures Section 7 Beverage Components BLENDER STEP MOTOR BLENDER MOTOR Function Function Raises and lowers the blender blade to provide consistent Mixes ingredients to maintain a consistent product. mixing of ingredients. Specification Specification 120V/60Hz or 220V/50Hz 5 VDC from Blender Board Check Procedure Check Procedure Use a voltmeter/ohm meter to check motor operation.

  • Page 69: Home Position Switch

    Section 7 Component Check Procedures HOME POSITION SWITCH DOOR SWITCHES Function Function Prevents blender motor operation if the step motor does Prevents blender motor operation if the door/switch is not not return to the home (up) position. closed. Specification Location SPST Normally Open Switch Magnetic switch is located on top of the Blend Chamber / Linear Slide Bracket access from the back side.

  • Page 70: Ice Chute Switch

    Component Check Procedures Section 7 ICE CHUTE SWITCH LOW WATER FLOAT SWITCH Function Function When the storage bin is full, the ice contacts the paddle Stops the ice machine when the water level drops below an and holds the switch open. After the switch is open for 5 acceptable level.

  • Page 71: Low Pressure Control

    Section 7 Component Check Procedures LOW PRESSURE CONTROL HIGH PRESSURE CUTOUT (HPCO) CONTROL Function Function Energizes and de-energizes the contactor coil when suction Protects the compressor by interrupting the control signal pressure rises above or falls below set-point. to the control board. Excessive high side pressure operates the HPCO.

  • Page 72: Gear Motor Rotation Sensor

    Component Check Procedures Section 7 GEAR MOTOR ROTATION SENSOR FAN CYCLE CONTROL Function Function The rotation sensor monitors evaporator gear motor speed. Cycles the fan motor on and off to maintain proper If the gear motor speed drops below 8 pulses per minute operating discharge pressure.

  • Page 73: Gear Motor Assembly

    Section 7 Component Check Procedures GEAR MOTOR ASSEMBLY Function Turns the auger in the evaporator assembly. Specifications 115-120V 60Hz or 230V 50Hz 2.5 RPM .13 HP Check Procedure MOTOR WILL NOT RUN. 1. Verify line voltage is present at the gear motor electrical connector (wires 80 &...

  • Page 74: Evaporator Assembly

    Component Check Procedures Section 7 EVAPORATOR ASSEMBLY COMPRESSOR ELECTRICAL DIAGNOSTICS Function The compressor does not start or will trip repeatedly on overload. Freezes water to the evaporator wall and the ice is removed with an auger. The auger transfers the shaved ice upward Check Resistance (Ohm) Values where it is compressed through an extruder and exits the NOTE: Compressor windings can have very low ohm values.

  • Page 75: Diagnosing Start Components

    Section 7 Component Check Procedures DIAGNOSING START COMPONENTS COMPRESSOR ELECTRICAL DIAGNOSTICS Location If the compressor attempts to start, or hums and trips the overload protector, check the start components before On the base unit behind the rear panels. replacing the compressor. Specification Capacitor R-290 220-240/50 - 1/5HP, TL4CN...

  • Page 76: Compressor Drawing Locked Rotor

    Component Check Procedures Section 7 COMPRESSOR DRAWING LOCKED ROTOR FILTER-DRIERS Location To determine if the compressor is seized, check the amp draw while the compressor is trying to start. Ice maker: Behind the compressor & cabinet: between The two likely causes of this are a defective starting compressor and condenser coil.

  • Page 77: Refrigerated Cabinet

    Section 7 Component Check Procedures Refrigerated Cabinet TEMPERATURE THERMISTOR - NOZZLE & CABINET PROBES ONLY Location Temperature/Resistance Chart • Nozzle Thermistor - Behind the front fascia inside the This chart is used for the temperature control thermistors. duct area connected to the product line. As the temperature rises at the thermistor block, the resistance drops.

  • Page 78: Duct Fan Motor

    Component Check Procedures Section 7 Refrigerant Recovery/Evacuation DUCT FAN MOTOR Location SELF-CONTAINED MODEL PROCEDURE Top of the base cabinet below the duct opening. Do not purge refrigerant to the atmosphere. Capture Function refrigerant using recovery equipment. Follow the Moves cool air from the cabinet through the tubing chase manufacturer’s recommendations.
  • Page 79 Section 7 Component Check Procedures Self-Contained Recovery/Evacuation 1. Place ice machine rocker in off. 2. Install manifold gauges, scale and recovery unit or two- stage vacuum pump and open high and low side on manifold gauges. RECOVERY/EVACUATION CONNECTIONS 3. Perform recovery or evacuation: A.
  • Page 80 Component Check Procedures Section 7 Self-Contained Charging Procedures NOTE: Manifold gauges must be removed properly to Important ensure that no refrigerant contamination or loss occurs. The charge is critical on all Multiplex ice 9. Make sure that all of the vapor in the charging hoses is machines.

  • Page 81: System Contamination Clean-Up

    Section 7 Component Check Procedures System Contamination Clean-Up GENERAL DETERMINING SEVERITY OF CONTAMINATION This section describes the basic requirements for restoring System contamination is generally caused by either contaminated systems to reliable service. moisture or residue from compressor burnout entering the refrigeration system.

  • Page 82: Cleanup Procedure

    Component Check Procedures Section 7 CLEANUP PROCEDURE Mild System Contamination 9. Follow the normal evacuation procedure, except replace the evacuation step with the following: 1. Replace any failed components. 2. If the compressor is good, change the oil. A. Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system.

  • Page 83: Replacing Pressure Controls

    Section 7 Component Check Procedures REPLACING PRESSURE CONTROLS Without Removing Refrigerant Charge This procedure reduces repair time and cost. Use it when any of the following components require replacement, and the refrigeration system is operational and leak-free. • Fan cycle control (air cooled only) •...
  • Page 84 Component Check Procedures Section 7 THIS PAGE INTENTIONALLY LEFT BLANK Part Number REV00 04/08/2020...

  • Page 85: Total System Refrigerant Charge

    Section 8 Section 8 Charts Charts Total System Refrigerant Charge 24-Hour ce Production/ Refrigerant Pressure Charts This information is for reference only. Refer to the Blend- In-Cup Beverage System model/serial number tag to verify These charts are used as guidelines to verify correct ice the system charge.

  • Page 86: Fb081Tf R404A Refrigerant Chart

    Charts Section 8 FB081TF R404A REFRGERANT CHART FB081TP R290 REFRGERANT CHART Characteristics vary depending on operating conditions. Characteristics vary depending on operating conditions. 24 hour mroduction 24 hour mroduction R-404a ce Production Air Temmerature Air Temperature/ 24 Hour Ice kWh/100 lbs (45 kg) Water Temmerature 24 hour Production Water Temperature...

  • Page 87: Nominal Operating Voltage

    Section 8 Charts Nominal Omerating Voltage NOMNAL OPERATNG VOLTAGE FOR LOADED ELECTRCAL COMPONENTS Commonent High Voltage AC 24V DC Voltage Low Voltage AC Modbus Other Gear Motor, Ice Maker Compressor, Ice Maker Condenser Fan, Ice Maker Evaporator Fan, Refrigerator Base Evaporator Fan, Duct Condenser Fan, Refrigerator Base Compressor, Refrigerator Base...
  • Page 88 Charts Section 8 THIS PAGE INTENTIONALLY LEFT BLANK Part Number REV00 04/08/2020...

  • Page 89: Power Distribution Wiring Diagram

    Section 9 Diagrams POWER DISTRIBUTION WIRING DIAGRAM Part Number REV00 04/08/2020...

  • Page 90: Interconnect Wiring Diagram

    Diagrams Section 9 INTERCONNECT WIRING DIAGRAM Part Number REV00 04/08/2020...

  • Page 91: Plumbing Diagram

    Section 9 Diagrams PLUMBING DIAGRAM Part Number REV00 04/08/2020...

  • Page 92: Ice Machine Refrigeration Tubing Schematic

    Diagrams Section 9 ICE MACHINE REFRIGERATION TUBING SCHEMATIC Compressor Condenser Liquid Line Filter Drier Heat Exchanger Expansion Valve Evaporator Part Number REV00 04/08/2020...
  • Page 96 To learn how Welbilt and its leading brands can equip you, visit our global web site at www.welbilt.com, then discover the regional or local resources available to you. ©2018 Welbilt Inc. except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate change of specifications without notice.. Part Number REV00 04/08/2020...

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