Seiko DH33 Manual - Page 2

E ENnGglLiIsShH 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. Decompression diving can be quite hazardous, however, and you should not make decompression 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 2 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. 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. 3 English