Thermo Scientific Corona Veo, Operating Manual

Page: 166 / 262

7 • Maintenance and Service
Page 166 Charged Aerosol Detectors Corona Veo (RS) Operating Manual
CAUTION—Spraying Solvent
Solvents can spray when under high pressure.
•
Stop the pump flow prior to opening the flow path.
•
Wait until the system pressure is down to zero.
•
When opening the flow path, wear appropriate protective
equipment.
CAUTION—Hydrostatic Pressure
Solvent may spill when you open the flow path. This is due to hydrostatic
pressure in the system when the solvent reservoirs are located above
the pump outlet.
Before you loosen a connection in the flow path, turn off the pump flow
and wait until the system pressure is down to zero. Unscrew the caps of
the solvent reservoirs and remove the solvent lines together with the
caps from the reservoirs. Empty the solvents lines. Refer to the
Operating Manual
for the pump. Retighten the reservoir caps.
NOTICE—Detector Gas Flow and Pump Flow
Improper handling of detector gas flow and pump flow start and stop
can damage the detector. Observe the respective order of steps:
• To stop pump flow and detector gas flow
Turn off the pump flow first, wait at least 5 minutes and only then
turn off the detector gas flow. During the waiting period, the drain
pump drains any remaining mobile phase to waste.
• To start detector gas flow and pump flow
Turn on the detector gas flow first, wait at least 5 minutes and only
then turn on the pump flow.