Cochran Nemesis IIa NITROX, User Manual

Page: 46 / 79

46
NORMAL CARE AND MAINTENANCE
Rinsing and Cleaning
Your dive computer is designed to require minimum care and maintenance. Both the
TU and WU are molded from fiberglass reinforced resins that are extremely resistant to
salt, chlorine, and exposure to ultraviolet light. However, both the TU and WU contain
sophisticated electronic components, and therefore, require reasonable care and treat-
ment.
·
Avoid sharp impacts to the TU and WU.
·
Do not expose units to extreme heat or cold.
·
Replace batteries when they become discharged, or once a year, whichever
should occur first.
·
Rinse both units with fresh water and allow them to air-dry after each use.
Take special care when rinsing the opening on the TU that is between the
battery caps. DO NOT attempt to clean this area with a pointed object or with
blasts of compressed air. Doing so will cause severe damage to your TU,
rendering it inoperable and voiding the Warranty
You can extend the service life of your dive computer by simply rinsing it with fresh
water. When using a garden hose to rinse your unit, keep the water pressure very low.
No chemicals of any type should be used on your dive computer. The WU’s rubber
strap may be conditioned with silicone spray especially developed for use with SCUBA
equipment. You will find this type of silicone spray at your local dive shop. Care should
also be taken to prevent your WU’s lens from becoming scratched or damaged. Minor
scratches will become invisible underwater. However severe gouges or cracks in the
lens would require that it be replaced.
High-pressure Transducer Care
When installing your high-pressure transducer, use an open-ended wrench on the
transducer’s hex nut to tighten. When the TU is not attached to your regulator, replace
the dust cap on the high-pressure transducer to prevent contaminants from entering
the opening. NEVER insert any object into the high-pressure transducer opening.
SEVERE DAMAGE may result.
Battery Type and Replacement
Your dive computer operates on two different sizes of user-replaceable batteries. The
TU requires four alkaline ‘AA’ batteries while the WU requires 2 alkaline ‘N’ batteries.
We recommend using only high quality alkaline batteries for both the TU and the WU.
Other types of batteries (such as Lithium and Nickel Cadmium) may permanently
damage the Tank Unit or Wrist Unit and void the warranty. Use of old, off-brand,
incorrect and/or visibly corroded batteries will also affect performance, damage the
units, and void the warranty.