Waters 2998, Обзор и руководство по обслуживанию

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December 5, 2017, 715004753 Rev. B
Page 57
4.2.2.2 Lamp LED
The lamp LED, to the left of the power LED, indicates the lamp status.
4.2.3 Clearing bubbles from the flow cell
Poor energy causing lamp lighting failures or changes in the reference spectrum can cause
bubbles in the flow cell. The bubbles can cause baseline anomalies such as spiking and drift.
To clear bubbles from the flow cell:
Establish a flow of degassed acetonitrile or methanol through the flow cell at the rate
anticipated for the subsequent analysis.
Table 4–2: Lamp LED indications
LED mode and color Description
Unlit Indicates that the detector lamp is extinguished.
Constant green Indicates that the detector lamp is ignited and that the detector
passed the sequence of startup diagnostic tests.
Flashing green Indicates that the detector is initializing or verifying wavelength
calibration.
Flashing red Indicates that an error stopped the detector. The console's log
records information about errors that cause operational failure
See also:
2998 PDA Detector Online Help
Constant red Indicates a detector failure that prevents further operation.
Cycle power to the detector. If the LED is still steady red,
contact your Waters service representative.