GE Monitor UPC-900 Operating Instructions Manual page 103

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