Invacare Perfecto 2 Series Service Manual page 80

SECTION 23—LEAK TEST
Check each end cap
for cracks and for
major leaks. You
should NOT use
leak detector on the
valve.
4 Way Valve
Use a 0-30 psi pressure gauge to monitor
system pressure swings, and also record the
amount of time it takes to achieve a shift (full
charge and full purge).
FIGURE 23.2 4 Way Valve Function Test
™
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Perfecto Part No 1148070
2