Thermo Scientific TRACE 1600 Hardware Manual page 324

7
Detectors Advanced Maintenance
Measuring the NPD Gas Flows
292 TRACE 1600/1610 Hardware Manual
 To manually measure the NPD flow rates
Materials needed
Forceps or tweezers
T6 Torxhead key
T10 Torxhead screwdriver
6 mm wrench
Measuring Tool Flowmeter Adapter
Electronic flowmeter (Thermo Scientific GFM Pro Flowmeter, or equivalent)
1. Put the GC in standby condition.
2. Switch off the thermionic source. Hydrogen and air are automatically closed.
3. Cool the detector to room temperature.
4. Turn the make-up gas off.
Note By pressing the Maintenance button, the GC cool down is automatically
carried out.
5. Power off the GC.
a. Push down the power switch (breaker), located at the back of the instrument, to the
position O.
b. Unplug the power cable from the AC Input connector into the back of the GC and
from the wall outlet.
6. Unplug the power cable from the AC input connector of the NPD Thermionic Source
Power Module and from the wall outlet.
If other external modules are present, unplug the power cable from the AC Input
connector of each module, and from the wall outlet.
7. Unplug the signal cable from the detector module. See Figure 255.
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