SERVO
PRO NANOCHROME Gas
Analyser
110
04416001A / Revision 7
7 START-UP AND SHUTDOWN PROCEDURE
7.1 Equipment/Tools
1.
Flow meter 0-500 cc/min range with 1 cc/min resolution (Restek ProFlow 6000
Cat#: 22656)
2.
7/16’’ spanner
3.
1/8 VCR gaskets
4.
Helium leak detector (eg Restek Electronic Leak Detector Cat# 22655)
5.
0-100 PSIG Pressure gauge with 1.5% accuracy
7.2 Installation requirements
1.
Face seal fittings (VCR type)
2.
Carrier gas: purified 5N argon or helium
3.
Semiconductor grade 316L stainless steel pipes
4.
All systems parts (valves, fittings, pressure regulators) must be UHP rated
7.3 Start-up procedure
WARNING
Do not connect gas to analyser unless all caps are removed.
Do not pressurise detector vent(s)
The carrier gas must be connected to the analyser before power is
applied
1.
Verify main voltage rating.
2.
Connect carrier gas purifier and follow installation instructions.
3.
Purge the carrier gas line before connecting to the analyser. Static purges are
recommended to fully purge dead volumes. A static purge consists of lowering the
delivery pressure close to atmospheric pressure and re-pressurising to operating
pressure. This process must be repeated at least 5 times.
4.
Remove all caps from the analyser backplate.
5.
Adjust carrier gas supply pressure to 80 psig if sample background gas is He, H2,
N2, Ar or 85 psig if sample background gas is O2. See label on back of analyser.
6.
Connect carrier gas to the analyser.
7.
Connect the process gas to sample inlet 1 and adjust supply pressure to 30 psig.