Advertisement
NOTE: Make sure that the carrier gas source
pressure is a least 35 psi. Carrier source pres-
sure should always be at least 10 psi greater
than the desired inlet pressure.
Performing the leak test—EPC inlets
NOTE: Be sure that the preparation steps on
pages 10 and 11 are complete before proceeding
with this test.
1. Press Inlet. Move to the Pressure field
and enter 25.
Released: April 2004
2. Wait approximately 15 seconds for equilibra-
3. Press Inlet. Move to the Pressure field, and
4. Note the "Actual" reading on the display and
6850 Series Gas Chromatograph Service Procedures
tion.
If pressure cannot be achieved, either a very
large leak is present in the system, or the
supply pressure is not high enough.
turn it off.
monitor the pressure for 10 minutes.
• If there is less than 1.0 psi pressure loss
(approximately 0.1 psi/min.), consider
the system leak tight.
• If pressure loss is much greater than1.0
psi, there is a leak that must be found
and corrected. See"Replacing the plumb-
ing assemblies" later in this section.
84
Hide quick links:
Advertisement
