Message
72 Change lamp or
call for service
76 Change lamp or
call for service
73 WARNING Too much
straylight leaks in
77 WARNING Autozero
Out of range
Monitor UPC-900 Operating Instructions 29-0567-16 AB
Action
1 If used in cold room, additional warm up might be
needed.
2 If problem remains, change the lamp.
3 If problem remains, call for service.
1 Check that filter wheel cover is closed.
2 Check that non-transparent tubings are used at
UV flow cell inlet and outlet.
3 Check that optical unit is not exposed to direct
sunlight.
4 If problem remains, call service
1 Auto is not allowed from a level above 2 AU.
2 Check buffers.
3 Clean UV cell.
7 Troubleshooting
7.2 Error messages
103
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