Testing for leaks – VICI D-4-I-TQ-R User Manual

Page 16

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12

3. Set aside the 1/8" wrench and completely remove the adapter from the

column inlet.

4. Screw the packed column adapter into the column inlet by hand.

Exercise

caution, as the tip of the adapter is very fragile. Then tighten the adapter
with a 1/4" wrench, using an additional wrench on the flats of the column
inlet to support the detector.

5. Connect the 1/8" column to the packed column adapter with the EZRU21

reducing union supplied in the fittings kit.

Testing for Leaks

It is critical for the system to be leak-tight, and an additional check at this
point can save many headaches later on. To test for leaks:

1. Cap the tube and pressurize the entire system with helium to 138 kPa

(20 psi).

2. If the system does not hold pressure, check all the fittings with an

electronic helium leak detector.

CAUTION: Never use leak detecting fluids on any part
of this system.

3. Tighten fittings as required.

An alternative leak testing method is descibed on page 16. NOTE: A leak
upstream from the column will not cause an immediate baseline change.
There must be time allowed for the hydrogen to pass through the column.

Installation

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