Service manual

10 Legend LX Second Stage Service Manual
FINAL CHECKS
1. Put the regulator under pressure with a 200 bar (±10
bar) supply.
2. Opening effort check. Apply an increasing inhalation
flow. When the MP starts to fall, note the effort reading
and compare it with the limits shown on table 5.
Checking specifications . If the opening effort is
outside the limits then check Table 1. Troubleshooting
Guide.
3. Flow/effort test . Apply an inhalation flow of 400 l/min
and check that the effort does not exceed 15 mbar. If
the effort exceeds this then check Table 1.
Troubleshooting Guide.
4. Leak test. Connect the first stage to a cylinder charged
to 200 bar, open the cylinder valve and immerse the set
in a fresh water bath for one minute. Check that there
are no leaks. If a leak is detected, disassemble the
entire 2
nd
stage; check all sealing surfaces and the
correct positioning of all parts.
END OF REASSEMBLY
Note: Tests 2,3 and 4 require the use
of a Regulator Test bench.