Connect Gases And Traps; Install The Gas Regulators - Agilent Technologies 8860 Installation And First Startup

1 Installing the GC
Step 8 Connect Gases and Traps
Most of installation involves plumbing gas to tanks, filters, and flow modules. Swagelok fittings
are used to make leak-tight connections. If you are not sure how to make a Swagelok
connection, see
Hydrogen is a flammable gas. If hydrogen or any other flammable gas is used, periodic leak
WAR N IN G
tests should be performed. Be sure that the hydrogen supply is off until all connections are
made, and insure that the inlet fittings are either connected to a column or capped at all times
when hydrogen gas is present in the instrument.
Substituting parts or performing any unauthorized modification to the instrument may result
in a safety hazard.
The insulation around the inlets, detectors, valve box, and the insulation cups is made of
refractory ceramic fibers (RCF). To avoid inhaling RCF particles, we recommend these safety
procedures: ventilate your work area; wear long sleeves, gloves, safety glasses, and a
disposable dust/mist respirator; dispose of insulation in a sealed plastic bag; wash your
hands with mild soap and cold water after handling RCFs.

Install the gas regulators

1 Select the appropriate CGA regulator for each gas type. (In other countries, refer to local
Table 4
Description
CGA 346, 125 psig max (8.6 bar), Air
CGA 350, 125 psig max (8.6 bar), H2, Ar/Me
CGA 540, 125 psig max (8.6 bar), O2
CGA 580, 125 psig max (8.6 bar), He, Ar, N2
CGA 590, 125 psig max (8.6 bar), Air
* For 1/4-inch tubing, purchase a 1/4-inch to 1/8-inch adapter, U.S. only.
Never use a liquid thread sealant on gas fittings. Liquid thread sealants introduce
C AU T I O N
contamination into the GC plumbing.
2 Confirm that the outlet fitting of the regulator is 1/8-inch Swagelok. If not, install the
28
Appendix A, "Making Swagelok Connections" for instructions.
standards. See the Agilent GC, GC/MS, and ALS Site Preparation Guide for requirements.)
Gas regulators, 1/8-inch, U.S. only
appropriate adapter fitting. Wrap the fitting threads using PTFE tape. Wrap the tape in a
clockwise direction so that the adapter threads do not unwrap the tape. Be careful to keep
the tape away from the end of the fitting. Two to three tightly wound wraps are sufficient.
Tighten the Swagelok adapter fitting securely to the NPT pipe thread fitting.
*
Part number
5183-4641
5183-4642
5183-4643
5183-4644
5183-4645
Installation and First Startup