6
CHAMBER CALIBRATION:
(Temperature and Pressure)
6. To start a chamber calibration cycle press and release the Unwrapped cycle button
and then press START button. The system will run a normal sterilization cycle, but the
LCD will continue to show the calibration display as shown in the example above.
7. By using the Unwrapped key (+) and Wrapped Key (-) adjust pressure offset (at
atmospheric pressure) until the internal sensor pressure reading (as displayed in the
PPP.P field) matches the pressure reading on the external pressure meter within
±
0.5Kpa. The PO field will show the new pressure offset. For software revisions
higher than 4.15 (R415)
PO
will represent
POA
(Pressure Offset Atmospheric). This
has to be done within 30 seconds (see screen below):
8. After 30 seconds, the calibration cycle will continue by entering the heating up phase.
Allow the chamber to reach the sterilization temperature. As pressure builds in the
chamber check for leaks in the cassette, associated piping and fittings. A steam leak
in the system will introduce errors in the measurement and will result in improper
calibration and non-sterile instruments.
New!
Keypad functions at this time:
Unwrapped Key:
increment current selected offset
Wrapped Key:
decrement current selected offset
Rubber and Plastic Key:
select between PO and TO
Stop Key:
end chamber thermocouple calibration
9. During calibration the unit will run a normal cycle except the beginning of the holding
phase (sterilization phase) when for ten consecutive times all the devices are turned
off for approximately 10 seconds to facilitate the calibration process. During these
periods chamber temperature could go down to 131°C. After these ten “calm” periods
the unit will resume normal operation (see the TIP below for checking the calibration
during normal operation).
10. During these “calm” periods observe the chamber temperature as displayed on the
reference thermometer and on the lower right side of the Statim LCD (CCC.C value).
New!
Adjust the TO value by using the Unwrapped and Wrapped keys until the
displayed temperatures match to /- 0.2
°
C. Please note that Chamber
Temperature Offset TO flashes when it is allowed to be adjusted. If PO flashes press
R&P key to select TO field. Adjust TO when the display shows:
PPP.P PO TTT.T TO
Adjust Press!
CCC.C
PPP.P PO TTT.T TO
Adjust Temp!
CCC.C