Replacing the IonSABRE APCI probe sample capillary 5-69
7. Pull on the capillary gently, testing to ensure that it stays in place.
8. Grip the PEEK union with the 8-mm wrench, and use the 7-mm wrench
to tighten the locknut against the PEEK union.
9. Check for leaks in the assembly by attaching the free end of the PEEK
tubing to an LC pump and pumping 1:1 acetonitrile/water at 1 mL/min.
10. If leakage occurs, disassemble and remake the connection, and repeat
the leak test.
11. When performing the leak test, check the backpressure on the LC pump,
which will be high if the capillary is blocked.
Requirement: If you determine the capillary is blocked, replace it.
12. When the leak test has been performed successfully, disconnect the
PEEK tubing from the LC pump.
13. Remove the probe inlet connector and PEEK tubing from the PEEK
union.
14. Carefully thread the capillary through the probe assembly.
Warning: To prevent the PEEK union from loosening when the
LC line is fitted, ensure that the locknut is appropriately
tightened.
PEEK union
7-mm wrench
Locknut
UNF coupling
8-mm wrench
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