Operating Manual GC 5000 BTX; Version 5 – 11/2010
129
How to exchange the rotor of the rotary valve:
1.
Turn off the carrier gas supply but let the GC 5000 switched on.
2.
Remove the cover of the valve oven.
3.
Loosen the set screw in the heater of the valve
(Caution, hot!)
and
pull the heater off the valve.
4.
Unscrew the entire knurled preload assembly
as shown in the figure aside.
Note:
Do not
tamper with the preset socket adjustment
screw.
5.
Engage the end of the rotor with a pencil-type magnet.
6.
After the valve is switched once (Program steps, Enrichment,
Sampling) the rotor can be taken out.
7.
Put a new rotor in.
8.
Take care that the ID letter E on the rotor tab
is directed toward port 4 of the valve.
(port 4 is marked with an arrow, see fig. aside)
9.
Turn the preload assembly into the valve body again by hand just
beyond the point where it touches the rotor.
10. Cycle the valve 10 times (Program steps, Enrichment, Sampling
respectively Program stopped).
11. Tighten the preload assembly in quarter-turn increments, cycling the
valve 10 times after each step.
12. Repeat this step until the preload assembly cannot be tightened
anymore by hand.
13. Install the heater again and fix it with the set screw.
14. Mount the valve oven cover.
The new rotor is inserted.
Summary of Contents for The GC 5000 BTX
Page 1: ...Operating Manual Gas chromatograph GC 5000 BTX...
Page 35: ...Operating Manual GC 5000 BTX Version 5 11 2010 33 Fig 5 Connection of analog outputs...
Page 102: ...Operating Manual GC 5000 BTX Version 5 11 2010 100 Injection Waiting for end of cycle time...
Page 105: ...Operating Manual GC 5000 BTX Version 5 11 2010 103 Injection Waiting for end of cycle time...