Siemens KION Service Manual page 146

x 275 ... 01 13 ... CON:
DIAG_PUC_MUSHROOM_PRESSURIZING_F
AILURE
Sub data:
... 00 01 MUSH_HAND_CIRCLE
... 00 02 MUSH_POPOFF
... 00 03 MUSH_BAG
... 00 04 MUSH_ABSORBER
... 00 05 MUSH_HAND_OPEN
... 00 0B UNI_DIRECTION_VALVE
Fault: Failed to pressurize system to appropriate level during mushroom valve test in
PuC. The Checking mushroom valves-test fails.
Description: Refer to information regarding "Checking mushroom valves" in chapter
"Service procedures", section "Pre-use check".
During the mushroom valve test in PuC, the mushroom valves are pressurized on one
side. Thereafter, the pressure on the other side is measured. In case of leakage, a
pressure is built-up on the other side of the valves. The PEEP valve is closed during
the test.
Tests order: MV1, MV2, MV3, MV4, MV5, OV12.
Refer to sub data to identify the valve reporting failure during the PuC.
Note: Sub data states error on one of the valves, but the actual error may however
also be found at one of the valves that remains to be tested.
Criteria for successful pressurizing of mushroom valves:
Valve Pressure Gas used to
for test (cmH2O) pressurize
MV1 INSP > 25 Fresh gas
MV2 INSP > 25 Fresh gas
MV3 INSP > 25 Fresh gas
MV4 PEEP > 25 Drive gas
MV5 MAN > 15 Drive gas
OV12 INSP > 25 Fresh gas
If the pressurizing criteria for the mushroom valve tested is not fulfilled,
this diagnostic log is written.
What to do:
1. Remove the cassette and check/clean the mushroom valves and the patient
cassette support plate. Check each individual mushroom valve for possible
defectives.
2. Replace the valve assembly plate.
3. Check/replace the patient cassette
4. Check the mushroom valve control gas supply pressure (20 kPa delivered
by REG 1). For adjustment of REG 1, refer to the tool "Pressure Tester 0.2
bar regulator", Order No. 65 62 479.
MV1
MV2
MV3
MV4
MV5
OV12
Mushroom
valves open
during the test
None
None
None
MV2
MV1,MV2
None