Figure 50. 3/8 In. Open-End Wrench On The Apci Flange Fitting; Figure 51. Apci Sample Tube Connection - Thermo Scientific LTQ Series Hardware Manual

5
Maintenance
Ion Source Probe Maintenance
Removing the APCI Sample Tube
76 LTQ Series Hardware Manual
 To remove the APCI sample tube
1. Remove the APCI nozzle from the APCI probe (see
2. Using the 3/8 in. open-end wrench, loosen the APCI flange fitting, and then pull the
sample inlet fitting, exit nut, ferrule, and sample tube assembly from the APCI nozzle
(Figure 50).

Figure 50. 3/8 in. open-end wrench on the APCI flange fitting

3/8 in. open-end wrench
3. Remove the sample tube, nut, and ferrule assembly from the APCI flange fitting
(Figure 51).

Figure 51. APCI sample tube connection

APCI nozzle
0.016 in. ID ferrule, natural PEEK
4. Discard the used sample tube.
page 74).
Sample tube
10-32 male nut, natural PEEK
0.239 in. ID Viton O-ring
APCI flange fitting
Thermo Scientific