Routine Maintenance ASAP 2460 Operator’s Manual
7-22 246-42800-01 - Aug 2013
2. If the regulator has a 1/8-in. outlet, proceed to the next step. If the regulator has a 1/4-in. outlet,
attach the reducer fitting to the outlet of the regulator shut-off/isolation valve and tighten the
valve nut with a 9/16-in. wrench.
3. Attach the gas inlet line to the regulator, reducer fitting, or regulator expansion and tighten with a
wrench.
4. Purge the regulator as follows:
a.) Close the regulator shut-off valve by turning it fully clockwise.
b.) Turn the pressure regulator control knob fully counterclockwise.
c.) Slowly open the gas bottle valve by turning it counterclockwise, then quickly close the gas
bottle valve.
Do not overtighten the fittings. Doing so could collapse the copper
tubing and cause a leak.
It is important to purge the regulator before proceeding. This will
prevent contamination of the analysis gas.
Gas bottle
shut-off valve
Pressure
control
knob
Regulator shut-off/
isolation valve
1/4-in. to 1/8-in.
brass reducer fitting
1/8-in. copper tubing
Low-pressure gauge High-pressure gauge
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