┌────────────────┬──────────────────┬───────────────────────────┐
│ Problem
│ Potential Cause │ Corrective Action
│
╞════════════════╪══════════════════╪═══════════════════════════╡
│ Cannot achieve │ Source pressure │ 1. Adjust source pressure │
│ at least 12psi │ less than 50psig │ and flow to recommended
│
│ with nebulizer │ (static)/flow set│ parameters.
│
│ stem fully
│ for less than 10 │
│
│ clockwise at
│ lpm.
│
│
│ 10 lpm.
│
│
│
│
OR
│
OR
│
│
├────────────────┼──────────────────┼───────────────────────────┤
│ Cannot achieve │ Flow system not │ 2. Check calibration of
│
│ at least 2psig │ calibrated
│ flow system.
│
│ with nebulizer │ correctly.
│
│
│ stem fully
│
OR
│
│
│ counterclock- ├──────────────────┼───────────────────────────┤
│ wise (CCW).
│ Leak in the flow/│ 3. Adjust flow for 15 lpm │
│
│ nebulization
│ and apply a liquid leak
│
│
│ tubing system.
│ detector to both ends of │
│
│
│ tubes color-coded "clear."│
│
│
OR
│ Correct any connections
│
│
│
│ where bubbles appear.
│
│
├──────────────────┼───────────────────────────┤
│
│ Gas escaping
│ 4. Use 1/2 inch open-end │
│
│
│
│ 114) on end of
│ Check condition of small │
│
│ nebulization
│ O-ring on end of valve.
│
│
│ valve.
│ Replace if cut, flat, or │
│
│
OR
│ worn.
│
└────────────────┴──────────────────┴───────────────────────────┘
│
│ Faulty
│ 5. Replace with new valve.│
│
│ nebulization
│
│
│
│ valve (P/N 5995) │
│
├────────────────┼──────────────────┼───────────────────────────┤
│ Nebulization
│ Source pressure │ 6. See corrective action │
│ pressure
│ greater than
│ #1 above.
│
│ greater than
│ 50psig (static)/ │
│
│ 16psig with
│ flow set higher │
│
│ valve stem full│ than 10 lpm.
│
│
│ clockwise.
│
│
│
│
OR
│
OR
│
│
│
├──────────────────┼───────────────────────────┤
│ Greater than
│ Flow system is
│
│ 6psig with
│ not calibrated
│ flow system.
│
│ valve stem
│ correctly.
│
│
│ fully CCW.
│
│
│
│
│
OR
│
│
│
├──────────────────┼───────────────────────────┤
│
│ Faulty
│ 8. Replace with new valve.│
│
│ nebulization
│
│
│
│ valve (P/N 5995).│
│
└────────────────┴──────────────────┴───────────────────────────┘
Table 2-5. Nebulization system troubleshooting.
MD0355
2-14