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## Troubleshooting 

Not all troubles that occur in a deicer system can be corrected by adjusting system components. Some troubles must be corrected by repair or replacement of system components or by tightening loose connections. Several troubles common to pneumatic deicing systems are shown in the left-hand column of the chart in Figure 15-33. Note the probable causes and the remedy of each trouble listed in the chart. In addition to using troubleshooting charts, operational checks are sometimes necessary to determine the possible cause of trouble. 

## Inspection 

During each preflight and scheduled inspection, check the deicer boots for cuts, tears, deterioration, punctures, and security; during periodic inspections, go a little further and 

check deicer components and lines for cracks. If weather cracking of rubber is noted, apply a coating of conductive cement. The cement, in addition to sealing the boots against weather, dissipates static electricity so that it does not puncture the boots by arcing to the metal surfaces. 

## Deice Boot Maintenance 

The life of the deicers can be greatly extended by storing them when they are not needed and by observing these rules when they are in service: 

1. Do not drag gasoline hoses over the deicers. 

2. Keep deicers free of gasoline, oil, grease, dirt, and other deteriorating substances. 

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