GE B30 Technical Reference Manual

Also see for b30: Maintenance manual Instruction manual Instruction manual Instruction manual Communications manual

B30 Patient Monitor8-30Document no. 2044677-0017.2.1 CO2 measurement‘REPLACE D-FEND’ message Amb – Work pressure difference too big.Indicates residue build-up on the water trap membrane. This decreasesair flow. Replace the D-fend.‘SAMPLE LINE BLOCKED’ message Amb – Work pressure difference too big.Sampling line or water trap is occluded. Water trap container is full. Ifocclusion persists, check internal tubing for blockages.No response to any gas Check Sample Gas Out.Amb - Work pressure low, flow too small and pump voltage too high.Sampling line, water trap, or internal tubing is blocked or loose, orimproperly attached. Gas out connector or tubing is blocked.Zero valve malfunction. Pump failure or pump is worn. Supply voltagemissing. Serial communication error.Sudden increase in gas display Water trap malfunction. Check all internal tubing and the interior of thewater trap for occlusions or leaks. Replace water trap. Check flow rates.Abnormally high (or abnormallylow response to CO2or sudden occlusion warningPressure transducer failure. Check the Ambient and Amb – Workpressures in Gases service menu.Strong drift in all gases Leak in sampling line or internal tubing (especially in conjunction with toolow readings).Problem Cause What to doActiontoo low ETCO2 value• sudden decrease in circulation• pulmonary embolism• hyperventilation• very large dead-space• large shunting• leak in sampling system• calibration error• high by-pass flow from ventilator• check all connections• check calibrationtoo high ETCO2 • hypoventilation• increased metabolism• D-fend contaminated• calibration error• change D-fend• check calibrationwaveform clipped • incorrect scaling • change scaleProblem Cause/What to do