Siemens KION Service Manual page 147

x 276 ... 01 14 ... CON:
DIAG_PUC_MUSHROOM_LEAKAGE_BEFOR
E_OPEN_FAILURE
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: A mushroom valve leakage has been detected during the 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 see witch valve that was tested in the sequence when failure
occurs.
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 to insure no leakage in the mushroom valves:
Valve Pressure Mushroom valves open
for test (cmH2O) during the test
MV1 MAN < 10 None
MV2 PEEP<10 None
MV3 PEEP<10 None
MV4 INSP < 10 MV2
MV5 INSP < 10 MV1,MV2
OV12 MAN < 10 None
If the "no leakage" pressure 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