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Domnick Hunter Maxigas 120 - User Manual

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SERVICE GUIDE

Questions and Answers

  • A
    amanda72Aug 7, 2025
    What to do if my Domnick Hunter Maxigas 120 has no or low gas outlet pressure?
    • T
      Theresa JohnsonAug 7, 2025
      If your Domnick Hunter Portable Generator has no or low gas outlet pressure, it could be due to several reasons. The generator might be overdue for service, in which case you should service it. There could also be an internal or external gas leak, which requires checking and rectification. Finally, the inlet pressure may be too low; ensure it meets the required specification.
  • L
    leblanclynnAug 12, 2025
    How to fix excessive noise or vibration in my Domnick Hunter Maxigas 120 Portable Generator?
    • L
      Luis WoodsAug 12, 2025
      Excessive noise or vibration in your Domnick Hunter Portable Generator can stem from a few sources. First, check if the silencer is loose or defective and rectify as needed. Second, inspect the solenoid valve for wear or a loose coil; check and replace if required.
  • T
    Tracy SmithAug 17, 2025
    What to do if my Domnick Hunter Portable Generator shows power connected but LCD and status indicators are not illuminated?
    • A
      Anthony EscobarAug 17, 2025
      If your Domnick Hunter Portable Generator is connected to power but the LCD and status indicators are not illuminated, it could be due to a blown fuse (replace the fuse), a disconnected ribbon cable (reconnect the ribbon cable), or the power may not be properly connected (reconnect the power).
  • N
    Nicholas LeblancAug 22, 2025
    Why is there a high oxygen concentration in my Domnick Hunter Portable Generator?
    • C
      christian82Aug 22, 2025
      A high oxygen concentration in your Domnick Hunter Portable Generator may be caused by a defective oxygen cell, which you should replace. Another possible cause is a leak in the system piping, which requires checking and rectification.
  • B
    Brenda StewartAug 27, 2025
    What causes low inlet pressure in a Domnick Hunter Maxigas 120 Portable Generator?
    • G
      George EllisAug 28, 2025
      Low inlet pressure in your Domnick Hunter Portable Generator can be attributed to a few reasons: the compressor or ring main pressure might be low, requiring a check and rectification. Alternatively, the inlet valve may not be open, which also requires checking and rectification. Finally, there might be a defect on the pre-treatment package; refer to the pre-treatment manual.
  • P
    Patrick HayesSep 1, 2025
    What causes high outlet pressure in my Domnick Hunter Maxigas 120?
    • N
      Nathan BrooksSep 1, 2025
      High outlet pressure in your Domnick Hunter Portable Generator is caused by a defective outlet regulator. Reset or replace it.

Summary

Safety Information

Markings and Symbols

Explains the various safety markings and international symbols used on the equipment.

Technical Specification

Menu Interface

Hours Meters and Fault Log

Details the function of hours meters and the fault log for monitoring generator status.

Customer Settings Menu

Describes parameters configurable by the user, such as alarm levels and economy settings.

Service Setup and Timers

Outlines service timers and setup options accessible via service menus.

I;O and Customisation Menus

Details I/O settings and customisation options available in the menu system.

Servicing

Cleaning and Service Intervals

Provides guidance on cleaning the equipment and outlines recommended service intervals for maintenance.

Service Kits

Lists available service kits and their corresponding kit numbers for maintenance tasks.

Key Service Procedures

Details essential procedures for replacing components like silencers, sensors, and valves.

Oxygen Analyser Calibration

Explains the process for calibrating the oxygen analyser to ensure accurate gas readings.

Oxygen Analyser System

Sensor Calibration and Configuration

Covers sensor calibration, analogue output settings, and sensor type selection.

Sensor Simulation and Zeroing

Describes how to simulate sensor output and perform sensor zeroing for testing.

Diagnostics and Restore

Details diagnostic functions and procedures for restoring analyser configuration to factory defaults.

Troubleshooting

Service Record

Appendix A: Schematics

Domnick Hunter Maxigas 120 Specifications

General IconGeneral
Frequency50 Hz
Fuel TypeDiesel
Power Output120 kVA
Phase3
Voltage400 V

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