Nikon SB-910 - Manual (Page 15)

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Preparation
The flash unit should never be submerged in liquid or exposed to rain, 6.
saltwater or moisture unless it is properly protected from the liquids
and moisture. Underwater use requires a certified underwater housing.
If water or moisture gets inside the unit, this could cause the unit to catch
on fire or cause an electric shock. In such instances you should immediately
remove the batteries from the Speedlight and then bring the unit to your local
Nikon dealer or authorized service center for repair.
Note: electronic devices that are penetrated by water or moisture are often not
economically repairable.
Do not use the unit in the presence of flammable or explosive gas.
7. If
the flash unit is operated in areas where there is a flammable gas, including
propane, gasoline and dust, it could cause an explosion or fire.
Do not fire the flash unit directly at the driver of a moving car,
8. as this
could temporarily impair the driver’s vision and cause an accident.
Do not fire the flash unit directly into the eyes of someone that is at
9.
close range, as it could damage the retinas of their eyes. Never fire the flash
unit closer than 1 meter from infants.
Do not fire the unit while the flash head is touching a person or object.
10.
Such use can result in the person being burned, and/or their clothes igniting
from the heat of the flash’s firing.
Keep small accessories out of the reach of children
11. to avoid the possibility
of the accessory being swallowed. If an accessory is accidentally swallowed,
immediately consult with a doctor.
Use only the batteries specified in this user’s manual.
12. Batteries other
than those specified could leak corrosive liquids, explode or catch on fire or
otherwise not perform satisfactorily.
Do not mix battery types, brands or old and new batteries,
13. as the
batteries could leak corrosive liquids, explode or catch on fire. When using
more than one battery in a product, always use identical batteries that were
purchased at the same time.
Non-rechargeable batteries such as manganese, alkaline and lithium
14.
batteries should never be charged in a battery charger because they
could leak corrosive liquids, explode or catch on fire.
When using standard size (AA, AAA, C, D) or other common
15.
rechargeable batteries such as Ni-MH batteries, or when recharging
them, be sure to use only the battery charger specified by the battery
maker and read the instructions thoroughly. Do not recharge these
batteries with their terminals reversed in the charger or before
the batteries have cooled off sufficiently because they could leak
corrosive liquids, explode or catch on fire. The same caution also applies
to using the rechargeable batteries that may be supplied by the photo
product’s manufacturer.