Manual Seiko DH33 (page 2 of 15) (English)

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English

ENGLISH

WARNING

The SEIKO Diving Computer Cal. DH33 is

intended for use in an inherently hazardous

form of recreation. Therefore, it is absolutely

essential that you strictly observe all

instructions for the use and maintenance of

the watch set forth in this manual.

First of all, this watch is for use in recreational

(no-decompression) diving in water having

a temperature range -5° C to +40° C (+23° F

to +104° F) only by adults in good health and

having average physical strength. It is not

suitable for use in saturation diving using

helium gas.

The watch uses an algorithm developed by

Mr. Randy Bohrer, one of the most

distinguished scientists in this field, which

expands upon the theories of the so-called

Swiss model. Unless you have undergone

scuba training with a qualified instructor,

you can neither fully appreciate the concept

of those theories and the nature of hazards

you may face while diving, nor properly

understand the meanings of indications and

warnings the watch provides.

The watch also provides data for Nitrox

diving. Do not use the watch for Nitrox

diving unless you are specially qualified to

dive with Nitrox, having full knowledge of the

potential hazards of Nitrox diving. It is

extremely hazardous to dive using the watch if

it is set for the wrong percentage of oxygen

(FO2). You should check before every dive if the

FO2 value set for the watch corresponds exactly

to the actual percentage of oxygen in your

scuba tank.

Anticipating emergencies, the watch provides

information for decompression diving. De-

compression diving can be quite hazardous,

however, and you should not make de-

compression dives.

Do not attempt to dive using the watch unless

you have been properly trained in scuba diving,

possess the requisite experience and skill to

dive safely, have thoroughly familiarized

yourself with the operation and maintenance

of the watch, and have tested all watch functions

prior to each dive.

In addition, sharp fluctuations in atmospheric

pressure and aquatic environments may affect

the performance of the watch. The indications

and warnings it provides serve only as general

guidelines to minimize the possibility of

WARNING

WARNING notes indicate any condition or practice

which, if not strictly observed, could result in severe

personal injury or possible death.

CAUTION

CAUTION notes indicate any condition or practice which,

if not strictly observed, could result in personal injury or

property damage.

decompression sickness and other hazards,

and are not intended to guarantee the safety

of the diver. It is necessary to use other

diving equipment together with the watch

for safety’s sake.

Also note that the possibility of

decompression sickness and other hazards

may increase depending on such factors as

the individual diver’s physiological

characteristics, environmental conditions

and the extent of the diver’s fatigue.

Finally, the watch is intended for use by a

single user. Do not share it with other

divers. If any one other than the owner of

the watch uses it, make sure that the watch

is reset to the initial settings with the

measurements stored in it being all erased.

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Seiko DH33 Manual

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