Welch Allyn CP150 Spirometry - Quick Reference Guide - Manual (Page 13)

Troubleshooting
Symptoms and solutions
Problem-solving suggestions:
If you try these suggestions and still have problems, contact Welch Allyn.
Symptom Possible cause Suggested action
Unable to calibrate Poor connection between flow
transducer and sensor
Check the connection between flow
transducer and sensor.
Damage to flow transducer Replace the flow transducer if it is
damaged.
Leak during calibration. Ensure that the connection between
the calibration syringe and flow
transducer is tight with no leaks.
Uneven calibration strokes. Use even strokes in calibration.
Pressure tubing is kinked Replace pressure tubing.
No sensor detected Poor connection between the sensor
and the device
Connect to another USB port.
Replace the USB cable.
Does not print Out of paper Load paper. See the electrocardiograph
manual.
Paper jam If the paper is jammed, clear it, then
reload.
Values are too high (intermittent) Patient’s fingers obstructed the screen
on the back of the flow transducer,
causing high back pressure and false
reading
Retest.
Patient’s lips were not tightly sealed
around the flow transducer
Retest.
Spirometer was calibrated with the
wrong size syringe
Recalibrate with a 3-liter syringe. See
Performing a calibration.
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