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JB0112-014-INS-LABRevB07
10. TROUBLESHOOTING
Your JOHN BUNN Suction Unit contains no user-serviceable parts. If you believe your unit is not
working properly, BEFORE YOU RETURN IT TO THE MEDICAL EQUIPMENT PROVIDER WHERE YOU
PURCHASED IT OR TO JOHN BUNN, please take a few moments to check for these possible causes:
PROBLEM
ACTION
Unit does not turn on
1. Check power source and connection
2. Ensure that the wall outlet is live
3. Check power cord for damage
Motor runs, but no vacuum
1. Verify tubing connection security
2. Check for leaks or tubing kinks
3. Ensure that float shut-off is not activated
4. Check for bottle leaks and cracks
Low Vacuum
1. Use vacuum adjust knob to increase vacuum level
2. Check system for leaks
3. Adjust vacuum adjust knob and release
