Rp17 Pressure Retention Test; Rp18 Plumbing Leak Test - CAIRE Hi Flow Stroller Technical & Service Manual

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Repair Procedures
RP17 – Pressure Retention Test (Figure 14)
a. Assemble oxygen regulator, pneumatic adapter and hose.
Connect assembly to oxygen gas source.
b. Assemble pressure gauge (Item J) and adapter assembly. Thread
hose barb onto pressure gauge (use Teflon ® tape). Push tubing
onto hose bard and attach with clamp.
c. Connect gauge assembly (Item J) to hose barb on FCV outlet.
Open FCV (Item 24) to highest flow setting.
d. Connect the proper pneumatic adapter to QDV (Item 37) for
side fill units or (Item 62) for top fill.
e. Increase pressure to 19 psig (1,3 bar).
f. Turn FCV valve (Item 24) to Off setting.
g. Allow unit to sit undisturbed for 60 minutes.
h. Turn FCV valve (Item 24) to highest flow setting.
i. If pressure gauge (Item J) is at or above 10 psig (0,7 bar), unit
passes test.
RP18 – Plumbing Leak Test (Figure 14)
WARNING: The unit must be empty and vented before starting pro-
cedure.
a. Remove soft case (RP 4)
b. Assemble oxygen regulator, pneumatic adapter and hose.
Connect assembly to oxygen gas source.
c. Assemble pressure gauge (Item J) and adapter assembly. Thread
hose barb onto pressure gauge (use Teflon ® tape). Push tubing
onto hose bard and attach with clamp.
d. Connect gauge assembly (Item J) to hose barb on FCV outlet.
Open FCV (Item 24) to highest flow setting.
e. Connect the proper pneumatic adapter to QDV (Item 37) for
side fill units or (Item 62) for top fill.
f. Increase pressure to 19 psig (1,3 bar).
g. Leak test all connections, joints, and valves with leak test solu-
tion.
NOTE: PRV (Item 49) and SRV (Item 43) may leak slowly. Repair
all other leaks first and retest for pressure retention before changing
relief valves.
h. Close FCV (Item 24) by turning to Off position. Remove pressure
gauge assembly
i. Disconnect pneumatic adapter from QDV.
j. Leak test QDV poppet and FCV outlet.
k. Repair all leaks by following appropriate repair procedures.
FIGURE 14: Plumbing Tests Set-up
FIGURE 15: Vent Valve Assembly
Hi Flow Stroller Technical Service Manual • PN 14314465 Rev F
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