GA2X00 WarrantyPlus Partnership Scope of Work

Document ID

Document ID TE11970

Published Date

Published Date 10/11/2019
GA2X00 WarrantyPlus Partnership Scope of Work

GA2400 and GA2800 Oxygen Sensors

WarrantyPlus Partnership


Your Hach GA2400/GA2800 Oxygen Sensor WarrantyPlus Partnership provides full coverage, including parts, labor, and travel for startup and three scheduled preventative maintenance visits performed by a Hach Field Service Technician. The WarrantyPlus Partnership also includes any additional repair visits authorized by the Hach Technical Support Team and a priority support number that will be included with your partnership documentation.

During the pre-scheduled site visits, your Hach Field Service Technician will complete:

Verification of Instrument performance/Maintenance

  • Perform limited instrument cleaning.
  • Review and evaluate user-programmed parameters.
  • Evaluate all instrument alarms, warning conditions, and connections.
  • Verify instrument operating voltages.
  • Electrochemical cleaning of the sensor.
  • Cathode, Guard, and Anode cleaning.
  • Install new cartridge, which includes the electrolyte, O-ring, and a membrane.
  • Calibrate the sensor.
  • Verify sensor is measuring to expected customer values.
  • Verify software version and update as necessary.



  • Repair of this sensor is not possible in most cases. If the sensor fails under warranty and cannot be repaired, a replacement will be issued.
  • Abuse, neglect, and acts of God not covered.

Reporting/Certificate of Performance

  • Provide Hach Field Service Report with complete documentation of service performed and measurements/readings.
  • Issue Certificate of Instrument Performance for each instrument that successfully passes final testing.



  • Provide basic end-user training on general instrument operation and maintenance (advance notice required).

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