Troubleshooting - Hach PAT700 DS Basic User Manual

Send the instrument for service
Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and
national regulations.
1. Drain the instrument. Refer to
2. Clean the instrument fully.
3. Get a return authorization from the manufacturer. Make sure that the return authorization number
is on the shipping label.

Troubleshooting

Diagnostics
Review the UV lamp information
See the lamp status and the number of operational hours until the next lamp replacement.
1. Push << to show the sliding menu.
2. Push DIAGNOSTICS, then select the General Tab.
Option Description
Status The color indicator shows the lamp status. Green=normal operation, yellow=marginal operation,
red=lamp fault
Hours left Shows the hours of useful lamp life until the next replacement.
Do a lamp test
1. Push << to show the sliding menu.
2. Push DIAGNOSTICS, then select the General tab.
3. Push LAMP TEST.
4. Obey the screen prompts to start the lamp test.
Note: Push the X icon at any time to stop the test.
Change to the other UV lamp
1. Push << to show the sliding menu.
2. Push DIAGNOSTICS.
3. Push SWITCH LAMPS. The lamp status light changes to the new selection.
Select a diagnostic test
1. Push << to show the sliding menu.
2. Push DIAGNOSTICS, then select the Tests tab.
3. Select the necessary test. Obey the screen prompts to start the test.
Note: Push X at any time to stop the test.
See the calibration dates
1. Push << to show the sliding menu.
2. Push DIAGNOSTICS, then select the Calibration Dates tab. The screen shows the last
completed calibration dates for TOC, conductivity and the system suitability test.
C A U T I O N
Drain the instrument on page 22.
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