XS Scuba SEAAIR, Service And Repair Manual

Page: 24 / 31

SeaAir Regulator
24
SeaAir Regulator Service and Repair Manual
Final Testing Procedures
CAUTION:
If the regulator will be used with EAN/ Nitrox, it is
important to pressurize and flow test the regulator using only
hydrocarbon-free gas. The regulator will otherwise become
contaminated with hydrocarbons if normal compressed air
is used. Industrial grade compressed Nitrogen is strongly
recommended as a lower cost alternative to EAN/ Nitrox for
the purposes of flow testing.
First Stage Intermediate Pressure Test
1. Connect a calibrated intermediate pressure test gauge to the
regulator, either with a quick-disconnect inflator hose or with
the female fitting of a second stage LP hose, depending on the
connection of the test gauge.
CAUTION : To provide a safety relief valve in the event that
intermediate pressure exceeds 155-170 psi, ensure that a fully
assembled and properly adjusted second stage is connected
to the first stage before pressurizing. Failure to relieve inter-
mediate pressure that exceeds 400 psi may result in damage
or rupture of the test gauge or LP hose, and could cause
serious personal injury.
2. Initially connect the first stage to a supply of 300 psi filtered
test gas, and slowly open the supply valve to pressurize the first
stage. Closely monitor the IP test gauge to determine whether
the intermediate pressure rises above 145 psi.
CAUTION
: If the intermediate pressure continues to rise
above 200 psi, immediately shut the test gas supply valve.
Refer directly to the Troubleshooting guide, and remedy as
needed before proceeding any further.
3. When the intermediate pressure has been determined to be 145
psi or less, close the supply valve and purge the second stage to
depressurize the system. Connect the first stage to a supply of
2,500 - 3,000 psi test gas.
NOTE
: Correct intermediate pressure for the first stage is be-
tween 135-145 psi, with a supply pressure of 2,500 - 3000 psi.
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