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Manitowoc Multiplex 50GR04 - User Manual

Manitowoc Multiplex 50GR04
52 pages
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Part Number 020002365 08/25/2015
Post Mix Soda and Super-Chilâ„¢
Refrigeration Unit with Electronic Control
Installation, Operation and Maintenance Manual
This manual is updated as new information and models are released. Visit our website fo rthe latest manual.
www.manitowocbeverage.com/us

Table of Contents

Questions and Answers

  • J
    Jane SheltonAug 5, 2025
    Why is my Manitowoc Multiplex 50GR04 beverage too sweet and how to fix it?
    • K
      Katelyn RileyAug 5, 2025
      If the beverage dispensed by your Manitowoc Chiller is too sweet, it could be due to a few reasons. The flow control might be out of adjustment, so try adjusting it. Another possibility is insufficient soda flow caused by low carbonator pressure; in this case, adjust the CO pressure or change the tank. Leaks causing low CO pressure could also be the culprit, so repair any CO leaks. Finally, check for any obstructions in the water or soda line and clean them out.
  • K
    Kristin StaffordAug 9, 2025
    What to do if my Manitowoc Chiller is dispensing only syrup and CO2?
    • W
      William AlexanderAug 9, 2025
      If your Manitowoc Chiller is only dispensing syrup and CO2, there might be a few issues. First, check the power supply and ensure the carbonator is plugged in or reset the breaker. Also, make sure the water supply is turned on. Replacing the water filter might help. Additionally, check, clean, or replace the pump strainer and the water check valve. For internal carbonator units, check for frozen water lines. If none of these work, the carbonator itself might be defective, so check, repair, or replace the carbonator pump, motor, electrode, or liquid level control.
  • E
    Edward BennettAug 13, 2025
    Why are my drinks foaming from Manitowoc Chiller?
    • W
      William AndersonAug 13, 2025
      If your drinks are foaming when dispensed from your Manitowoc Chiller, it could be due to over carbonation. Check the CO supply and reset the pressure or replace the regulator as necessary. Another possible cause is dirty lines or valves, so clean and sanitize the entire system.
  • K
    Kevin HoltAug 18, 2025
    What to do if my Manitowoc Multiplex 50GR04 beverage is not sweet enough?
    • S
      Stephen HoweAug 18, 2025
      If the beverage from your Manitowoc Chiller isn't sweet enough, it could be that the flow control is out of adjustment; try adjusting it. Another possibility is that the soda flow is too high, so reset the CO pressure or replace the regulator if necessary. Also, check for any obstructions in the syrup line and clean it out.
  • V
    Vanessa BarkerAug 22, 2025
    What to do if my Manitowoc Multiplex 50GR04 is dispensing only syrup and plain water with no pressure?
    • C
      Charles Mcclure DVMAug 22, 2025
      If your Manitowoc Chiller is dispensing only syrup and plain water without pressure, ensure you install a fresh CO2 tank. Also, adjust the HP regulator to the proper setting or check, repair, or replace the HP regulator if it's defective. Inspect the CO line for any pinches, kinks, or obstructions and repair or replace as needed.
  • A
    andersoncarlAug 26, 2025
    How to fix Manitowoc Chiller when water is only dispensing with no pressure?
    • D
      David OnealAug 26, 2025
      If your Manitowoc Chiller is only dispensing water with no pressure, the regulator(s) may be out of adjustment; check and adjust them. You might also be out of CO2, so install a fresh tank. Defective regulators could also be the issue, so check, repair, or replace them. Finally, inspect the CO line for any pinches, kinks, or obstructions and repair or replace the CO line.
  • L
    Linda HernandezAug 30, 2025
    What to do if one valve on my Manitowoc Chiller won't dispense anything?
    • B
      burtonjessicaAug 31, 2025
      If one valve on your Manitowoc Chiller isn't dispensing anything, and you've confirmed there's power to the valve, it could be due to a broken wire or loose connection; replace or repair the wire or connector. Alternatively, the microswitch might be bad, so replace it.

Summary

Safety and Procedural Notices

Critical Pre-Installation Warnings

Essential warnings and instructions to review before installation and operation, covering safety and general guidance.

Section 2: Installation

Remote Condenser and Installation Dos and Donts

Information on remote condensers and essential safety practices during installation.

Location Requirements, Ratings, and Installer Responsibilities

Criteria for selecting an installation location, model ratings, and essential installer duties.

Installer Instructions and Electrical Requirements

Steps for installers, electrical specifications, minimum circuit ampacity, and wiring safety.

Grounding Instructions

Critical guidelines for proper grounding of electrical components to prevent electric shock.

Plumbing;Water Supply Requirements

Detailed requirements for potable water supply, pressure, connections, and drain hose.

Plumbing Circuit Diagrams

Schematics detailing water circuits for models 42, 44, SC1000, 50, and SC2000.

Pre-mix and Carbonated Water Plumbing

Diagrams illustrating syrup and carbonated water line connections for various tower configurations.

Section 3: Operation

Error Codes and Control Programming Overview

List of error codes, their causes, and an introduction to the control programming modes.

Section 4: Maintenance

Section 5: Troubleshooting

Troubleshooting Common Problems

A checklist of common operational problems and their potential causes and corrective actions.

General Troubleshooting Warnings

Essential safety warnings for technicians performing troubleshooting and repairs on the unit.

Error Codes and Troubleshooting Notes

A list of system error codes, their associated causes, and notes on error handling and resetting.

Troubleshooting Flowcharts: E1, E2, E3 Errors

Diagnostic flowcharts to identify and resolve errors related to water pressure, CO2 pressure, and water level.

Troubleshooting Flowcharts: E4, E5, E6 Errors

Diagnostic flowcharts to identify and resolve errors related to water bath temperature, supply pressure, and refrigeration temperature.

Troubleshooting Flowcharts: E7, E8, E9 Errors

Diagnostic flowcharts to identify and resolve errors related to ice bank size and long carbonation run times.

Manitowoc Multiplex 50GR04 Specifications

General IconGeneral
BrandManitowoc
ModelMultiplex 50GR04
CategoryChiller
LanguageEnglish

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