Testing For Leaks; Connecting The Oven Cryogenic System - Thermo Scientific TRACE 1600 Hardware Manual

Testing for Leaks

Connecting the Oven Cryogenic System

Thermo Scientific
Once you have connected the gas supplies to the GC, you need to test the gas supply lines
for leaks.
CAUTION Before performing a leak test make sure that the GC is powered off and the
power cable is unplugged from the AC Input connector (Mains socket) and from the wall
outlet.
ATTENTION Avant d'effectuer un test d'étanchéité, assurez-vous que le GC est mis hors
tension et que le câble d'alimentation est débranché du connecteur d'alimentation CA
(prise secteur) et de la prise murale.
 To perform a leak test
1. Be sure that GC is powered off.
2. Open and set the gas supply.
a. Open the gas supply.
b. Set the carrier gas pressure to approximately 50 kPa (7 psi) higher than the maximum
pressure of the GC regulator.
c. Set the detector gas pressures to approximately 1050 kPa (152 psig) if available,
otherwise set the maximum pressure allowed, for example 500 kPa (72.5 psi).
3. Check for leaks.
a. Use a handheld electronic leak detector (Thermo Scientific GLD Pro leak detector or
equivalent) to check each fitting for leaks.
b. If you detect a leak, tighten the connection and retest it.
c. Repeat this process until all connections are leak free.
If the oven of your TRACE 1600/1610 is equipped with a cryogenic cooling option, you need
a supply of coolant, such as carbon dioxide (CO
Connecting the Oven Cryogenic System
) or liquid nitrogen (N
2 2
TRACE 1600/1610 Hardware Manual
1
Installation
).
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