Welch Allyn Duet CO2 Module - User Manual User Manual
Page 50
Duet CO
2
Module OEM Implementation Manual
Page 50
Confidential
Welch Allyn OEM Technologies
Pump Exhaust
If a pneumatic connection at the pump exhaust is loose at either the pump exhaust or internal monitor
exhaust port, gas build up within the host monitor can occur. The module does not report this fault to
the host.
WARNING
When using oxygen or flammable anesthetics, a pump exhaust leak can present
a fire hazard. It is the responsibility of the OEM to meet regulatory requirements
with regard to single fault protection and exhaust tubing. Refer to the Regulatory
Section for additional regulatory and safety information.
Pump Failure
Events resulting from pump failure include
§ low flow
§ no flow
§ high flow
Low Flow
The pump may fail to meet the set flow rate due to low flow caused by a nonfunctional pump. The
module responds to status requests with a
NOTE
The module remains indefinitely in the total exhaust occlusion state if not commanded by
the host.
High Flow
The pump may fail to meet the set flow rate due to high uncontrollable flow caused by a runaway
pump. The module reverts to the fault mode, turns OFF the pump and responds to status requests with
an
No Flow
The pump may fail to meet the set flow rate due to no flow caused by a nonfunctional or electrically
disconnected pump. The module responds to status requests with a
Pneumatic Leak response.
WARNING
The module remains indefinitely in the total exhaust occlusion state if not
commanded by the host.