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Domnick Hunter Maxigas Series - User Manual

Domnick Hunter Maxigas Series
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SERVICE GUIDE

Questions and Answers

  • J
    Jacob GarciaAug 2, 2025
    What to do if my Domnick Hunter Maxigas Portable Generator has no or low gas outlet pressure?
    • A
      Ashley AdamsAug 2, 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.
  • R
    Ronald ScottAug 7, 2025
    How to fix excessive noise or vibration in my Domnick Hunter Maxigas?
    • A
      Andrew CortezAug 7, 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.
  • H
    hutchinsondavidAug 12, 2025
    What to do if my Domnick Hunter Maxigas Portable Generator shows power connected but LCD and status indicators are not illuminated?
    • C
      Christina FergusonAug 12, 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).
  • W
    wramirezAug 17, 2025
    Why is there a high oxygen concentration in my Domnick Hunter Portable Generator?
    • A
      ashley47Aug 17, 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.
  • K
    Kayla WigginsAug 22, 2025
    What causes low inlet pressure in a Domnick Hunter Maxigas?
    • T
      tiffanyzavalaAug 22, 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.
  • D
    Dr. Cynthia Chavez DVMAug 28, 2025
    What causes high outlet pressure in my Domnick Hunter Portable Generator?
    • H
      Heidi BellAug 28, 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 symbols and markings used on the equipment and in the guide.

Technical Specification

Menu Interface

Hours Meters

Displays three types of hour meters for generator operation tracking.

Fault Log

Accesses the 10 most recent fault messages with codes and run hours.

Customer Settings

Service 1: Setup

Configuration options for sensor type, purity, and pressure settings.

Service 2: Timers

Displays operational timers like hours run and economy mode.

Service 3: I;O Menu

Service 4: Customisation

Customisation options for inlet, exhaust, and pressure periods and cycles.

Servicing

Cleaning

Instructions for cleaning the equipment with a damp cloth and mild detergent.

Service Intervals

Details recommended maintenance intervals for various components and services.

Service Kits

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

Service Procedures

Covers replacement of exhaust silencer, oxygen sensor, filters, and various valves.

Oxygen Analyser

Calibrate Sensor

Procedure for calibrating the oxygen sensor using calibration gas.

Analogue Output FSD

Adjusts the Full Scale Deflection (FSD) for the analogue output.

Set 4 mA output

Sets the minimum output current for the analogue signal to 4mA.

Set 20 mA output

Sets the maximum output current for the analogue signal to 20mA.

Sensor Simulation

Simulates sensor output to test analyser functionality and relays.

Sensor Selection

Allows selection of the correct sensor type (e.g., O2-1, O2-2).

Sensor Zero

Zeroes the sensor, typically by exposing it to 100% nitrogen.

Diagnostics

Provides view-only diagnostic codes for sensor signal and firmware version.

Restore

Restores analyser configuration data to factory default values.

Troubleshooting

Service Record

Appendix A Schematics

Domnick Hunter Maxigas Series Specifications

General IconGeneral
BrandDomnick Hunter
ModelMaxigas Series
CategoryPortable Generator
LanguageEnglish

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