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• Protect the unit from shocks, extreme heat or direct sunlight and chemi-
cal attack. The D3 cannot withstand the impact of heavy objects like
scuba cylinders, nor chemicals like gasoline, cleaning solvents, aerosol
sprays, adhesive agents, paint, acetone, alcohol etc. Chemical reactions
with such agents will damage seals, case and fi nish.
• Store your D3 in a dry place when you are not using it.
• The D3 will display a battery symbol as a warning when the power gets
too low. When this happens, the D3 should not be used until the battery
has been replaced (see chapter 3.1.2.).
• Do not fasten the strap of your D3 too tightly. You should be able to
insert your fi nger between the strap and your wrist. Use the extension
strap when fastening the D3 on your exposure suit.
6.2. MAINTENANCE
If left without care for an extended period, a thin fi lm (often invisible to the eye)
will cover the unit. Much like the buildup on the glass of an aquarium, this fi lm is
the result of organic contaminates found in both salt and fresh water. Suntan oil,
silicone spray and grease will speed up this process. As a result of this buildup,
moisture will be trapped next to the water contact and will not allow your D3
to operate properly.
The water contact can be cleaned with a small brush (e.g. toothbrush).
IMPORTANT: The D3 should be soaked, then thoroughly rinsed with fresh water
and then dried with a soft towel after each dive. Make sure that all salt crystals