Waters 2489, Operator'S Manual

Page: 165 / 234

Error messages 5-3
Startup, calibration, and operating error messages
Error Message Description Corrective Action
Wavelengths span
370 nm: Order filter
not in use In dual wavelength
mode:
• If both selected
wavelengths
>
370
nm, the detector
applies the second
order filter to block
unwanted UV light.
• If both selected
wavelengths
<
370
nm, the detector
removes the second
order filter.
• If the selected
wavelengths bracket
the 370 nm
threshold, the
detector does not
apply the second
order filter and
issues a warning
message that any
data collected for
wavelengths above
370 nm may contain
inaccuracies because
of possible UV light
interference (second
order effects).
Select wavelengths that are
both above or both below
370 nm.
Lamp failure Lamp indicates Off
when it should be On. 1. Check lamp icon.
1. Recycle power to the
detector.
2. Replace lamp.