Waters GCT Premier Operator's Manual page 147

Probe insertion lock:
Pump probe VAC button
The Pump probe button is labelled VAC on the instrument.
Tip:
3. Ensure that the Viton O-ring is present in the insertion lock retaining
flange groove.
4. Attach the probe insertion lock to the source housing.
5. Tighten the two thumbscrews that secure the probe insertion lock to the
source housing.
6. Open the reference reservoir pump valve.
7. On the MassLynx Tune window, click Vacuum > Pump Source.
Probe lock insertion valve (shown closed)
Probe retaining
knob
Probe lock guide
rod and
microswitch contact
Thumbscrews
Threaded probe
collar
PROBE electrical
connector
Installing the probe insertion lock 7-3