Operating Environments
9650-002360-01 Rev. A
ZOLL Z Vent Ventilator Operator’s Guide
6-5
Note:
ZOLL does not offer a C2A1 Chemical/Biological filter. This filter can be obtained
from a Chemical/Biological filter supplier.
Check Valve on Patient Circuit when in Hazardous Environments
When operating in a hazardous situation where a chemical/biological filter is in use, you should
use a check valve to prevent hazardous gas from entering the patient circuit. The exhalation
valve on the patient circuit is not adequate to protect patients if they rapidly inhale/exhale as the
valve may not fully close in time to prevent hazardous gas entrainment.
Also, if the PEEP is set low, patients may inhale faster than the flow is delivered which could
cause hazardous gas entrainment. Consequently, a Check Valve is required to protect patients.
Warning!
The device is shipped with both the pediatric/adult and infant/pediatric single limb
circuits. A check valve is required with these patient circuits when operating in
chemical/biological environments. The correct mating of the check valve with the
patient circuit is shown in Figure 6-2. Users who anticipate use in these environments
should also stock the check valve.
Figure 6-2 Check Valve Connection To Patient Circuit
