Manitowoc Multiplex 50MR04

Questions and Answers:

A
Aaron BakerAug 5, 2025
Why is my Manitowoc Chiller beverage too sweet and how to fix it?
- M
  Michael BrooksAug 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.
C
Carla HarrisAug 8, 2025
What to do if my Manitowoc Multiplex 50MR04 Chiller is dispensing only syrup and CO2?
- C
  Christopher MorrisAug 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.
N
Nancy MendezAug 13, 2025
Why are my drinks foaming from Manitowoc Chiller?
- K
  kylefarleyAug 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.
J
Joseph FosterAug 17, 2025
What to do if my Manitowoc Multiplex 50MR04 Chiller beverage is not sweet enough?
- H
  Holly RichardAug 17, 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.
M
Monique CrawfordAug 22, 2025
What to do if my Manitowoc Chiller is dispensing only syrup and plain water with no pressure?
- M
  Michael LeonardAug 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.
T
Toni HicksAug 27, 2025
How to fix Manitowoc Multiplex 50MR04 Chiller when water is only dispensing with no pressure?
- J
  Julie ThompsonAug 27, 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.
W
Willie HowardAug 31, 2025
What to do if one valve on my Manitowoc Chiller won't dispense anything?
- L
  Leah JacksonAug 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.

Manitowoc Multiplex 50MR04 Specifications

General

Brand	Manitowoc
Model	Multiplex 50MR04
Category	Chiller
Language	English

Summary

Safety Notices

General Warning

Alerts to potential personal injury situations.

General Caution

Alerts to situations that could damage equipment.

Important Installation Considerations

Read Before Proceeding

Essential information before installation and operation.

Personal Injury Potential

Warns against operating misused or altered equipment.

Installation General Requirements and Clearances

Clearances Table

Table detailing minimum clearance dimensions for various models.

Safe Installation Practices

General Safety Warnings

Crucial warnings before beginning installation.

Code Compliance

Adherence to plumbing, electrical, and local codes.

Electrical Safety Measures

CO2 Cylinder Handling and Storage

Utility Connection Standards

Grounding Instructions

Grounding Compliance

Appliance must be grounded per national and local electrical codes.

Grounding Risks

Explains risks of improper grounding conductor connection.

General Electrical Precautions

Plumbing and Water Supply

Potable Water Requirements

Details water pressure and connection specs for models.

General Plumbing Requirements

Water Supply Details

Plumbing Circuit Diagrams (Models 42, 44, SC1000)

Plumbing Circuit Diagrams (Models 50, SC2000)

Pressurized Water Circuit Diagram

Diagram of the pressurized water circuit for these models.

CO2 and Compressed Air Circuits

CO2 Gas and Compressed Air Diagram

Illustrates CO2 gas and compressed air connections and components.

Electrical Connections and Tower Installation

Electrical Connection Steps

Detailed steps for making electrical connections to the unit.

Tower Mounting

Condenser and Line Set Installation

Remote Condenser Caution

Remote Condenser Requirements

Approved condensers and installation/maintenance personnel requirements.

Pre-charged Refrigeration Line Requirements

Line Set Requirements

Minimum distance and vertical rise trap requirements for lines.

Installing the Remote Condenser

Condenser Installation Location

Condenser Mounting

Electrical Installation

Excess Tubing Caution

Connecting and Testing Refrigeration Lines

Connecting Pre-charged Lines

Procedures for connecting pre-charged refrigeration lines.

Refrigerant Charge Note

CO2 Circuit Leak Testing

Steps to test the CO2 circuit for leaks using gas.

Syrup Circuit Leak Testing

Steps to test syrup circuits for leaks using CO2 gas.

Preparing the Ice Bank

Building an Ice Bank

Detailed steps for filling the water bath and building an ice bank.

Installation Checklist Items

Sequence of Operation and Controls

Operational Sequence

Explanation of the unit's operational sequence and cycles.

Electronic Control Details

Prerequisites, power-up, normal operation, and power interruption effects.

Programming Mode 5 and Energy Savings

Program Mode 4 Continuation

Program Mode 5: Energy Saving

Details on enabling/disabling energy saving mode for G Series.

Energy Savings Mode Operation

How the energy saving mode functions and its exit conditions.

ERC Programming Flowchart

Flowchart Modes 1-4

Visual flowchart detailing steps for ERC programming modes 1 through 4.

ERC Programming Flowchart Mode 5

Flowchart Mode 5

Visual flowchart detailing steps for ERC energy saving mode.

Maintenance Schedule Overview

Periodic Maintenance Tasks

Schedule of periodic maintenance tasks for the equipment.

Dispensing Station Maintenance

Refrigeration Unit Maintenance

Quarterly cleaning and inspection of the refrigeration unit.

Water Filter Maintenance

CO2 Supply and Cleaning Procedures

Valve and Product Line Cleaning

Procedures for cleaning and sanitizing dispensing valves and product lines.

Sanitizing Procedures

Beverage System Cleaning Warnings

Warnings regarding sanitizing solution and PPE.

Bag-In-Box System Sanitation

Steps for cleaning and sanitizing one syrup circuit using BIB connectors.

Figal Beverage System Sanitation

Figal System Preparation

Preparing rinse, detergent, and sanitizing tanks for Figal systems.

Figal System Cleaning Steps

Detailed steps for cleaning and sanitizing Figal syrup circuits.

Back-Flow Preventer and Shipping

Back-Flow Preventer Checks

Procedure for checking the back-flow preventer annually.

Shipping and Storage Caution

Troubleshooting Checklist

Common Operational Problems

Checklist of problems and their potential causes.

Problem Resolution

Solutions and corrective actions for identified problems.

Error Code Information

Error Code Display Notes

Notes on how error codes are displayed and reset.

Error Code Reference

Table listing error codes, their descriptions, and common causes.

Troubleshooting Flowcharts (E1-E3)

E1, E2, E3 Error Flowchart

Troubleshooting flowchart for errors E1, E2, and E3.

Troubleshooting Flowcharts (E4-E6)

E4, E5, E6 Error Flowchart

Troubleshooting flowchart for errors E4, E5, and E6.

Troubleshooting Flowcharts (E7-E9)

E7, E8, E9 Error Flowchart

Troubleshooting flowchart for errors E7, E8, and E9.

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Manitowoc Multiplex 50MR04

Table of Contents

Questions and Answers:

Manitowoc Multiplex 50MR04 Specifications

Summary

Safety Notices

General Warning

General Caution

Important Installation Considerations

Read Before Proceeding

Personal Injury Potential

Installation General Requirements and Clearances

Clearances Table

Safe Installation Practices

General Safety Warnings

Code Compliance

Electrical Safety Measures

CO2 Cylinder Handling and Storage

Utility Connection Standards

Grounding Instructions

Grounding Compliance

Grounding Risks

General Electrical Precautions

Plumbing and Water Supply

Potable Water Requirements

General Plumbing Requirements

Water Supply Details

Plumbing Circuit Diagrams (Models 42, 44, SC1000)

Plumbing Circuit Diagrams (Models 50, SC2000)

Pressurized Water Circuit Diagram

CO2 and Compressed Air Circuits

CO2 Gas and Compressed Air Diagram

Electrical Connections and Tower Installation

Electrical Connection Steps

Tower Mounting

Condenser and Line Set Installation

Remote Condenser Caution

Remote Condenser Requirements

Pre-charged Refrigeration Line Requirements

Line Set Requirements

Installing the Remote Condenser

Condenser Installation Location

Condenser Mounting

Electrical Installation

Excess Tubing Caution

Connecting and Testing Refrigeration Lines

Connecting Pre-charged Lines

Refrigerant Charge Note

CO2 Circuit Leak Testing

Syrup Circuit Leak Testing

Preparing the Ice Bank

Building an Ice Bank

Installation Checklist Items

Sequence of Operation and Controls

Operational Sequence

Electronic Control Details

Programming Mode 5 and Energy Savings

Program Mode 4 Continuation

Program Mode 5: Energy Saving

Energy Savings Mode Operation

ERC Programming Flowchart

Flowchart Modes 1-4

ERC Programming Flowchart Mode 5

Flowchart Mode 5

Maintenance Schedule Overview

Periodic Maintenance Tasks

Dispensing Station Maintenance

Refrigeration Unit Maintenance

Water Filter Maintenance

CO2 Supply and Cleaning Procedures

Valve and Product Line Cleaning

Sanitizing Procedures

Beverage System Cleaning Warnings

Bag-In-Box System Sanitation

Figal Beverage System Sanitation

Figal System Preparation

Figal System Cleaning Steps

Back-Flow Preventer and Shipping

Back-Flow Preventer Checks

Shipping and Storage Caution