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% of
Which valves
What is being
agent
are operated
tested
delivery
test
20-29
The O
Test valve
Checks that the
2
is opened.
scavenger valve
closes and that the
inlet valve is
Scavenging valve
opened.
is closed and the
inlet valve is
opened.
30-39
The inlet valve
Checks for a leak
and the O
test
in the cassette.
2
valve remain
open.
Document No. 8502854
Description of test
For all agents except Desflurane, Is the counter pressure and
the cassette pressure compared, they should be within
30mmHg of each other.
The test for Desflurane is more rough and checks if the
difference between the cassette pressure and calculated vapor
pressure is larger than 500mmHg.
If the test fails will 28% be stored in the system check error
history.
If the bypass flow is 4% less than the previous test (10-14%)
indicates this a leak in the cassette. Repeats the previous
cassette pressure test (20-29%). If the leak test fails will 33%
be stored in the system check error history. If the pressure test
fails will 35% be stored in the system check error history.
Troubleshooting A-FGC1
Technical suggested actions
If failed at 28%
ALADIN cassette leaks or the connection
between A-FGC1 and cassette. Verify on A-
FGC1 diagnostic page.
Check cassette pressure sensor
calibration on the A-FGC1 diagnostic page
by verifying that cassette pressure minus
install pressure = equal to counter
pressure (+30mmHg). If not equal
calibrate Cassette pressure sensor, Agent
flow and repeat the test
Recalibrate Cassette pressure sensor
board.
Scavenging valve leaks; replace valve.
If failed at 33%
Leakage in cassette or connection
between cassette and A-FGC1.
If failed at 35%
See suggestion at 28% 1-3
B-73
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Troubleshooting
