Owner’s Manual | Model A704-5 Aviation Lighting System37© 2008 Carmanah Technologies CorporationLast revised: April 20089.0 Maintenance and Product CareAlthough the A-704-5 light is designed to be maintenance-free, significant performance gains can bemade with clean solar panels and lenses. Clean the solar panels monthly. Use water and a soft sponge orcloth. A mild non-abrasive cleanser can be used for more stubborn residue. Rinse well.The following other maintenance precautions should also be taken: Clean solar panels and lenses more frequently during drier months, as they may become covered indust more quickly. A pressure washer is not recommended. Visual inspection – check the exterior for cracks, missing or broken hardware or other potentialproblems.9.1 Light Battery Self-Discharge During StorageTable 9-1: Recharge Intervals provides the recommended maximum storage intervals betweenrecharging, depending on the temperature of the storage location.Table 9-1: Recharge IntervalsStorage TemperatureoF oCRecharge Interval [Months]68 or lower 20 or lower 368 to 104 20 to 40 1104 or higher 40 or higher Twice monthly9.2 Charging Model A704-5 Light’s BatteriesFollow one of the charging recommendations outlined in Table 11: Charging Alternatives. Follow theinstructions in section 5.7.1 Battery Diagnose Function to test the lights charge level. Once the light isfully charged, you can continue to store it or deploy it.Do not place your Model A704-5 closer to the light source than recommended inTable 9-2: Charging Alternatives, as it may overheat, or damage to one or more of thesolar panels could occur.Table 9-2: Charging AlternativesCharging Source Distance From Solar Panels Hours to Charge from 10% to 100%500 W halogen 24” (60 cm) 60060W tungsten in reflector housing(desk lamp) 2” (5 cm) 600Direct sunlight(light should be in Ship Mode) – 150External Charger for wall outletcharging (Part # 48898) – 18