Thermo Scientific Thermo Scientific Vanquish VC-D40, Operating Manual

Page: 85 / 174

6 • Operation
Variable Wavelength Detectors (VC-D40, VF-D40)
Operating Manual Page 85
6.5.2 Turning On the Lamps
You can turn on both lamps using the UV and VIS buttons on the keypad
of the device or using the Chromeleon software. It is recommended to
turn on the UV lamp prior to the VIS lamp.
TIP To ignite the lamps, the lamp house cover must be installed. If you
remove the lamp house cover while either one of the lamps, or both
lamps are turned on, an emergency shut-off of the lamps is triggered.
Allow the optics to warm up and stabilize for at least one hour until the
working temperature is reached before you start analysis. The optics
requires some time to warm up for optimal performance before
analysis.
TIP When the UV lamp was turned off, a cooling-down period of 5
minutes is required before the lamp can ignite again. The detector
monitors the cooling-down period. If the lamp is turned on again after
less than 5 minutes, a message appears in the Chromeleon Audit Trail
followed by a countdown until the lamp is ignited.
It is not possible to turn any of the lamps off or on during data
acquisition.