Vivitar VIV-DF-186 Manual Do Utilizador

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6. Always use a fresh set of 4 AA batteries of the same brand and type when old batteries 

are depleted. Mixing and matching batteries of different types or brands will greatly 

deteriorate the flash’s performance.

7. When the flash is not being used for extended period of time (>2 weeks), remove the 

batteries in order to prevent battery leakage. Once the batteries are removed, do not 

expose the flash unit and batteries to excessive heat, sunlight or fire.

8. Charge up and test fire the flash unit at least once per month to maintain the optimal 

performance of the flash tube and charging capacitor.