Chapter 11 Maintenance And Troubleshooting; Maintenance; Uv Detect Technology - Hach ANATEL PAT700 Operator's Manual

PAT700 Total Organic Carbon Analyzer – Maintenance and Troubleshooting

Chapter 11 Maintenance and Troubleshooting

DANGER
Tasks involving maintenance and service of this equipment may have electrical
shock, eye, and chemical hazards associated with them. These tasks must only be
attempted by individuals trained and knowledgeable in the particular task and the
hazards associated with it.
11.1

Maintenance

The PAT700 requires periodic maintenance to ensure the continued accuracy and reliable
performance of the analyzer. UV lamps have a limited life and should be replaced every six
months. The measurement cell should have a yearly calibration verification.
Maintenance procedures may be performed either by the user or by Hach Ultra customer
service personnel. The most common maintenance procedure is UV lamp replacement. In
most instances, you can perform the lamp replacement in the field (see
replacement, page
procedures, phone Hach Ultra at 800.866.7889 or +1 541.472.6500.
If you must return the PAT700 to the factory for maintenance or repair, obtain a Return
Materials Authorization (RMA) number. Provide the model and serial numbers, and any
additional relevant information. Ship the instrument(s) to Hach Ultra Analytics, Inc., Attn: RMA
#xxxx.
NOTE
To clean the external surfaces of the analyzer, use only a damp cloth and mild cleaning
detergent. Do not use solvents or other chemicals that may damage the housing
components or display.

UV Detect technology

The PAT700 monitors the output of the UV lamp and produces an alarm if UV output indicates
a failing lamp or if the lamp has failed completely and can no longer support proper oxidation.
Code 127 indicates a failing lamp. Code 128 indicates a failed lamp.
Diminished lamp indications
When code 127 is produced, the analyzer UV lamp should be replaced as soon as possible.
UV Detect generates code 127 when UV output from the lamp has reached a level that
indicates a diminished lamp. At this level of UV output, the PAT700 switches lamp operation
to the secondary UV lamp.
Anatel
113). If problems persist after performing maintenance or repair
Page 129
PAT700 lamp
Operator Manual