Welch Allyn LC101 CO2 Module - User Manual - Manual (Page 67)

LC101 CO
2
Module OEM Implementation Manual Appendix C - Error Messages & Recovery
Welch Allyn OEM Technologies Confidential Page 67
15, Vacuum Offset Too Large
The Module detects a vacuum condition prior to the pump turning on. Transmission of CO
2
waveform and breath data packets will not begin. The pump is disabled during this advisory. This
message could also indicate that one or both transducers are faulty.
• Verify that no external vacuum is applied to the monitor’s CO
2
inlet port.
16, No Watertrap
The Module does not detect a watertrap properly inserted into the watertrap receiver.
Transmission of CO
2
waveform and breath data packets is halted unless the watertrap is
temporarily disconnected. If reinsertion occurs within 30 seconds from disconnect, the Module
resumes normal operation. If not connected within 30 seconds, the Module reverts to standby
mode and halts the transmission of data packets. When the advisory is cleared, a new
measurement mode command is required to resume data packet transmission unless the
Module was in the auto run mode. In this case, measurement resumes. The sidestream pump is
disabled during this advisory.
• Reinsert the watertrap into the watertrap receiver.
• Check for a misaligned or faulty watertrap receiver switch.
17, Watertrap or Cannula Occlusion
Low flow and high vacuum conditions are detected in the pneumatic system. CO
2
waveform and
breath data packets are available despite the advisory. The Module attempts to clear obstructions
while reporting these conditions by increasing the pump speed. If the obstruction is not cleared
after 5 seconds, the Module decreases the pump speed and holds vacuum for an additional 15
minutes. If the obstruction is not cleared after 15 minutes, the Module reverts to standby mode.
• Clear any obstructions in the watertrap and cannula.
• Straighten any kinks in the cannula tubing.
• Briefly disconnect the cannula from the watertrap. If the cannula is the fault source, the
fault is corrected.
• Replace the watertrap and/or cannula.
• Refer to Section 5, Pneumatic Operation, for additional information.
18, Exhaust Occlusion or Pneumatic Leak
Low flow and normal vacuum conditions are detected in the pneumatic system. CO
2
waveform
and measurement data packets are available despite the advisory. Normal measurement
resumes after the advisory is cleared.
NOTE When this condition occurs, the Module increases pump speed to a maximum and runs
indefinitely until the condition is cleared.
• Clear any obstructions in the exhaust tubing and screen.
• Straighten any kinks in the exhaust tubing.