Instruction manual

MicroBlender Instruction Manual
10 L2965–101 Rev. D
Section 5: Performance Checks
Before placing the MicroBlender into clinical use, perform the following
performance checks.
Warning! flow
If the MicroBlender does not function as described below, contact
CareFusion (refer to the company information at the beginning of this
manual).
DO NOT use the MicroBlender until correct performance is verified.
Low Flow MicroBlender Alarm / Bypass Check Reverse Flow Check
Adjustment Response
1. Applying 30 -75 PSIG
air/oxygen source gas. Adjust the
control knob to 60%
1. Alarm/Bypass* should not
activate (if gases are within 20 PSI
of each other).
2. Disconnect the 50 PSIG air
source from the MicroBlender.
2. Audible alarm, bypass* gas
flow starts.
3. Reconnect the 50 PSIG** air
source to the MicroBlender.
3. Audible alarm stops; bypass*
gas flow stops flowing.
4. Disconnect the 50 PSIG**
oxygen source from the
MicroBlender.
4. Audible alarm, bypass* gas
flow starts.
5. Reconnect the 50 PSIG**
oxygen source to the
MicroBlender.
5. Audible alarm stops; bypass*
gas flow stops flowing.
6. Connect a flow meter and an
oxygen analyzer to either outlet
port; with the MicroBlender
control knob set at 60%, adjust
the outlet flow rate to 6 – 8 LPM.
6. Oxygen analyzer should read 60
±3% when measured from the
flow meter outlet.
*Bypass flow should occur whenever the alarm sounds, but this condition can
only be verified by measuring O2 concentrations with an oxygen analyzer.
**Gas supply pressures of 50 PSIG provide optimal performance.