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MARLO NXT2 Series - User Manual

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MGT 60M – 600M
SYSTEM 7 – TWIN ALTERNATING
2” NXT2 SERIES
MODEL NO:
SERIAL NO:
DATE INSTALLED:
DEALER:
COMPLETE FOR FUTURE REFERENCE:
Standard Photograph
Equipment appearance may differ.
Twin system shown with skid mount option.
COMMERCIAL WATER CONDITIONER
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
8-633

Questions and Answers

  • D
    Deanna WilsonSep 12, 2025
    What to do if my MARLO Water System displays 'Flow Meter Error Continuous Flow Detected'?
    • V
      Virginia EvansSep 12, 2025
      If the MARLO Water System displays 'Flow Meter Error Continuous Flow Detected', this indicates that the flow has exceeded the specified threshold for a certain duration. To solve this, trigger a manual regeneration.
  • A
    Andre BoyerSep 12, 2025
    What to do if my MARLO Water System shows '100 Days Without Regen'?
    • K
      kmooreSep 12, 2025
      If your MARLO Water System displays '100 Days Without Regen', it means that 100 days have passed without a regeneration cycle. To resolve this, trigger a manual regeneration.
  • M
    Michele GillSep 9, 2025
    Why does my MARLO Water Dispenser show Error Valve Count Mismatch?
    • J
      Jason KingSep 9, 2025
      The 'Error Valve Count Mismatch' on your MARLO Water Dispenser means that the number of NXT2 valves detected doesn't match the system type selected in Master Programming. To fix this, push the correct valve settings in Master Settings.
  • G
    Gerald FrazierSep 8, 2025
    What to do if MARLO Water Dispenser displays Motor Stall No Changes Detected in the Optical Sensor?
    • S
      Stacy RussellSep 8, 2025
      If you encounter a 'Motor Stall No Changes Detected in the Optical Sensor' error with your MARLO Water Dispenser, it indicates that the motor is active, but no encoder pulses are being detected during homing. To fix this, check the P11 connection and then initiate a manual regeneration.
  • K
    Karen GonzalezAug 25, 2025
    What to do if my MARLO NXT2 Water Dispenser shows '100 Days Without Regen'?
    • M
      Michelle MoralesAug 25, 2025
      If your MARLO Water Dispenser displays '100 Days Without Regen', it means that 100 days have passed without a regeneration cycle. To resolve this, trigger a manual regeneration.
  • D
    Dennis OlsonSep 6, 2025
    What does 'Error Send/Receive Failure' mean on my MARLO NXT2 Water Dispenser?
    • S
      Shaun HansonSep 6, 2025
      If your MARLO Water Dispenser displays 'Error Send/Receive Failure', it means that during a setting push, a packet was missing. To fix this, reconnect the communication cables and push the settings in Master Settings.
  • A
    Angela MurphySep 5, 2025
    What does 'Error System Type Mismatch on Network' mean on my MARLO Water Dispenser?
    • R
      rebeccalozanoSep 5, 2025
      If your MARLO Water Dispenser displays 'Error System Type Mismatch on Network', it indicates that the system type among connected units does not match. To resolve this, push the correct system settings in Master Settings.
  • J
    Jamie MejiaSep 4, 2025
    What does 'Error Valve Count Mismatch' mean on my MARLO Water Dispenser?
    • M
      Michael Johnson MDSep 4, 2025
      If your MARLO Water Dispenser displays 'Error Valve Count Mismatch', it means that the number of NXT2 detected does not match the selected system type in Master Programming. Push the correct valve settings in Master Settings to resolve this.
  • M
    Ms. Tracy MossSep 3, 2025
    Why does my MARLO NXT2 control cycle continuously?
    • A
      Amanda EdwardsSep 3, 2025
      If your MARLO Water Dispenser control cycles continuously, it is caused by a misadjusted, broken, or shorted switch. Determine if the switch or timer is faulty and replace it, or replace the complete power head.
  • H
    Heather LaneSep 1, 2025
    What does 'Motor Stall No Changes Detected in the Optical Sensor for 6 Seconds' mean on my MARLO Water Dispenser?
    • A
      Amanda MeltonSep 2, 2025
      If your MARLO Water Dispenser displays 'Motor Stall No Changes Detected in the Optical Sensor for 6 Seconds', it means that the motor is on but no encoder pulses are detected within a given duration while homing. Check the P11 connection and trigger a manual regeneration.

Summary

System Information

Product Warranty

Details the warranty coverage for commercial and industrial water treatment products.

Dimension Chart

Provides physical dimensions for various MGT models, aiding in space planning.

Specification Chart

Lists key technical specifications, capacities, and flow rates for different system sizes.

Installation Warnings

General Installation Warnings

Crucial safety precautions and warnings applicable before, during, and after installation.

Inspection Requirements

Specific checks required for components like distributor piping and laterals before media loading.

Important Safety Information

General safety advisories regarding product installation and use.

Installation Procedures

General Installation Information

Covers operating pressure, power requirements, and unit design considerations.

Softener Tank Setup

Guides on locating, erecting, and preparing softener tanks for media loading.

Brine Tank Installation

Instructions for positioning and connecting the brine tank, including tubing and overflow.

Meter and Network Setup

Covers mounting water meters and connecting network/communication cables between units.

Power and Piping Connections

Details electrical power connection and proper piping installation for system integrity.

Operation

Timer Display and Controls

Explains the functions of LEDs, display screen, and control buttons on the timer.

System and Timer Operation

Describes system modes, timer functions during normal use, and power failures.

Regeneration Initiation and Control

Details manual regeneration, programming lock settings, and settings review.

Programming Modes and Calculations

Covers user mode, batch size calculation, and diagnostic mode flow charts.

Master Programming and Flow Diagrams

Explains master programming and provides diagrams of regeneration flow positions.

Maintenance

Wiring Diagrams

Provides the NXT2 wiring diagram for electrical connections and troubleshooting.

Powerhead Assembly Details

Illustrates and lists parts for the 2900 Powerhead Assembly.

Timer Assembly Details

Shows the NXT2 Timer Assembly and its components.

Control Valve Assembly Details

Illustrates and lists parts for the 2900 Control Valve Body.

Brine System Components

Details components and parts lists for 1600 and 1700 Brine Systems.

Meter Components

Describes various meter types and their parts.

Brine Tank Configurations

Lists components and part numbers for different brine tank sizes.

Service Assemblies

Lists available service assemblies, kits, and accessories for the system.

Troubleshooting

Detected Errors

Lists error messages, their causes, and recommended corrections for system issues.

2900 Valve Troubleshooting

Provides a table of common problems with the 2900 valve, their causes, and solutions.

MARLO NXT2 Series Specifications

General IconGeneral
BrandMARLO
ModelNXT2 Series
CategoryWater Dispenser
LanguageEnglish

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