Thermo Scientific VH-D20 Operating Manual page 132

7 • Maintenance and Service
Preparations
Follow these steps
Page 132
1. Flush the detector with the detector gas flow being turned on. For
recommendations on flushing the detector, see
Detector Between Analyses
2. Turn off the pump flow and then the gas flow:
a) Turn off the pump flow to the detector. Wait at least 5 minutes.
During the waiting period, the detector drains any remaining
mobile phase to waste.
b) Turn off the gas flow on the detector.
c) Wait until the system pressure is down to zero before you
continue.
d) Turn off the gas supply to the detector.
3. Turn off the detector with the main power switch.
4. Disconnect the inlet capillary from the nebulizer.
1. Turn the nebulizer by 90 degrees counter-clockwise in the opening
until it releases from the two locking points.
Mind the correct orientation of the nebulizer when it is unlocked:
Figure 26: Unlocking the nebulizer
No. Description
1 Gripping sides of the nebulizer on the top and bottom handle side
2 Protruding attachment locks of the nebulizer on the left and right handle
side
(} page 124).
Charged Aerosol Detectors (VH-D20, VF-D20)
Flushing the
Operating Manual