Siemens KION Service Manual page 82

Service procedures
Checking alarm detectors
To check the HW pressure alarm detection on MEA
the system is pressurized.
1. All mushroom valves except MV2 and MV3 are
closed. Fresh gas valve is opened and PEEP
valve is closed.
2. The gas module generates a constant flow of
3 l/min to pressurize the system. In case of a
leakage, this flow will first be increased to 7 l/min
and, if necessary, to 15 l/min to assure that the
system is pressurized.
3. The system checks that the HW pressure alarm
is activated at +5 cmH2O above the set upper
pressure limit (UPL). The HW pressure alarm test
will Fail if:
• Alarm is not activated and the INSP pressure
is higher than set UPL +10 cmH2O.
Diagnostic 278.
• Alarm is activated, but the INSP pressure is
less than set UPL. Diagnostic 278.
4. Waits 1 s after the HW pressure alarm is
activated. The HW pressure alarm test will Fail if:
5
• INSP pressure is not decreasing after 1 s.
The system is not evacuated probably
because MEA do not activate the signal
DISABLE_VALVES. Diagnostic 278.
5. The result of the check is shown as Pass or Fail
on the KION Monitor.
Ending the Pre-use check
• The Breathing bellows is emptied. A flow of
30 l/min from the drive gas module is generated to
empty the Breathing bellows.
• If the PuC was successful, the counter for
"Number of starts without recommended PuC"
will be set to zero. The date will also be saved.
• If the PuC was interrupted by the operator (by
selecting Cancel on the KION Monitor or setting
the power switch to On) or if any of the checks
Failed, the old calibration values for the transducers
in the E2-PROMs will be restored.
• The valves are set in position for Manual Ventilation
except for the fresh gas valve that is opened.
5 - 10 Siemens-Elema AB
KION / KION-i
E382 E392E 061 01 02 02