Welch Allyn 420 Series - SYMPTOM: Cuff Inflation and Deflation with No Blood Pressure Reading Displayed (or Error Code in Display); SYMPTOM: No Cuff Inflation; SYMPTOM: Temperature Malfunction

Spot Vital Signs 43
SYMPTOM: Cuff Inflation and Deflation with No Blood Pressure Reading Displayed (or
Error Code in Display)
SYMPTOM: No Cuff Inflation
SYMPTOM: Temperature Malfunction
Possible Cause Explanation and Corrective Action
Leak in pneumatic system Ensure all cuff attachments are tight.
Carefully check for tubing leaks in blood pressure cuff and tubing
attached to the device.
Arm movement during cycle Keep arm still during blood pressure cycle. Movement may cause
inaccuracies from artifact.
Tubing movement artifact Do not contact tubing during blood pressure cycle. Movement may
cause inaccuracies from artifact.
Possible Cause Explanation and Corrective Action
Connections between device and
cuff loose
Check all connections (do not over tighten).
Possible Cause Explanation Corrective Action
Error code displayed Broken probe Replace probe.
Consult Technical Manual.
Notify biomedical department or Welch Allyn Technical
Support.
Low temperature
readings
Improper probe
placement
Place probe in most posterior sublingual pocket when
in Orl mode.
No temperature dis-
played
Probe not
replaced
Replace probe in holder prior to taking another temper-
ature.