Siemens KION Service Manual page 74

Service procedures
Pre-use check
The KION / KION-i workstation demands the user to
start the semi-automatic Pre-use Check (PuC) at
every start-up of the workstation. It is also possible
to access the PuC via the KION Monitor. The KION
Monitor path to select PuC is:
Menu / Monitor Setup / Biomed / Service / Calibration / KION
Pre-use Check
or
Menu / KION / Preuse (not applicable for SC 9000).
Note that Service Password is required to access the
Service menu.
The Operating Manual describes how to perform this
PuC. The description below gives a more detailed
information about the PuC. This information can be
used e.g. during troubleshooting of the KION / KION-i
workstation.
Initialization
1. PuC instructions are shown on the KION Monitor.
2. CON sets the gas mixture to O
5
Check of control panel settings and of gas
supply
1. The system checks that the Upper Press. Limit
(UPL) knob is set between 60 and 80 cmH2O.
Diagnostic (279) will be shown in the Diagnostic
Log if UPL is not set correctly.
2. The system sets a flow of 0.5 l/min during 1.5
seconds to be generated by the gas modules AIR
(N O) – BP and DRIVE GAS for self-adjustment of
2
the flow in these gas modules.
3. The gas module AIR (N
of 30 l/min.
4. The system checks that the AIR supply pressure
is above 2.2 bar during 2.5 s.
5. If AIR supply pressure is above 2.2 bar during
2.5 s then AIR will be used as the selected gas
for the PuC.
6. The system sets a flow of 0.5 l/min during 1.5 s
to be generated by the gas module O
self-adjustment of the flow in this gas module.
7. If the AIR supply pressure drops below 2.2 bar
during the 2.5 s, the gas module O
generates a flow of 30 l/min.
8. If O is used, the system checks that the O
2
supply pressure is above 2.2 bar during 2.5 s.
5 - 2
/Air.
2
O) - BP generates a flow
2
– BP for
2
– BP
2
2
Siemens-Elema AB
9. If O supply pressure is above 2.2 bar during 2.5 s
2
then O2 will be used as the selected gas for the
PuC.
10. Diagnostic (260) will be shown in the Diagnostic
Log if supply gas is missing.
If the UPL knob is not set correctly or if both AIR
supply and O supply Fails, the PuC will not start and
2
the PuC start-up screen will remain on the KION
Monitor. Simultaneously, a caution sound is activated.
Leakage automatic ventilation
Checking the patient unit
The description below refers to Figs. 1–3. The
numbering in the description below (1–12) refers
to Fig. 2.
The system is set for Manual Ventilation and
Rebreathing. The PEEP valve is opened to
depressurize system.
1. The system generates 5 "flow puffs", with a
duration of 300 ms and 300 ms between them,
to zero the flow transducers in the gas modules.
2. The system generates 5 "pressure puffs" (40
cmH2O), with a duration of 2 s and 300 ms
between them, to stabilize the system and to
assure proper function of the seals. The PEEP
valve is closed and opened between each
"pressure puff".
3a. The system is emptied until the INSP pressure
decreases to 1,5 cmH2O.
If the timeout (10 s) to empty system has
elapsed, then a technical error code 9906 will be
displayed and the check will Fail.
Diagnostic 261, subdata ...26 B2.
3b. The system is pressurized using a fresh gas flow
of 20 l/min.
4. Calculates the filling volume by measuring the
time to reach the 40 cmH2O.
5. Calculates the system volume based on the filling
volume and the reached pressure (40 cmH2O).
6. The fresh gas flow is cut-off when INSP pressure
has reached the initial pressure. The first initial
pressure is 41 cmH2O.
If the timeout (15 s) to reach initial pressure has
elapsed, then the Fresh gas digit display shows
the reached pressure, a technical error code 9902
will be displayed and the check will Fail.
Diagnostic 261, subdata ...26 AE.
7. Waits to stabilize the pressure (first stabilization
period is 10 s).
KION / KION-i
E382 E392E 061 01 02 02