Leaks - HP 5890 Series II Plus Reference Manual

Preventive Maintenance
Split/splitless capillary inlets

Leaks

For proper inlet operation, it is essential the entire system be leak•tight.
The following procedure should be performed in initial checkout, or any
time a leak is suspected.
1. Switch off detector!
2. Install an inlet plug (a paper clip or similar•gaugewire) in the same
manner as a capillary column.
Figure 8-5
Capillary Inlet Plug Installed for Leak Test
3. Adjust the split•flowflow controller to about 60 ml/min.
4. Adjust or set the column head pressure to obtain a column pressure
of 138 kPa (20 psi).
5. Shut off septum purge or cap the septum purge vent with a suitable
swagelok fitting. Verify that it is shut off with a soap film (bubble)
flow meter.
INJ B PRES
gold
2 0
ENTER
Set inlet B pressure to 20 psi.
165