Service & Repair Manual
7
Copyright ©2008 XS Scuba
Intermediate Pressure Test
NOTE: It is not necessary to perform this test unless
a problem has been reported that requires diagnostic
troubleshooting and repair. When performing routine
overhaul service, proceed directly to the following sec-
tion,
Disassembly
.
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 intermediate 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. 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.
3. Note the intermediate pressure indicated by the test
gauge, and purge the second stage several times to
determine whether lockup is achieved without creeping or
fluctuating back and forth.
4. If the intermediate pressure creeps up or otherwise fluc
-
tuates after cycling the regulator, wait for it to stabilize (if
possible) before making a final note of the intermediate
pressure.
NOTE: Correct intermediate pressure for the first stage
is 140 (±5) psi, with an inlet pressure between 2,500
- 3,000 psi.
5. Close the supply valve and depress the second stage
purge button to depressurize the system before attempt-
ing to perform any disassembly.
▼
After completing the Preliminary Inspection, proceed
to Section 3 – Disassembly
