Manual Tusa RS-812 (page 29 of 96) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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Regulators

SECTION VII

SCHEDULED MAINTENANCE

1. Do not assume that a regulator is in good working order because of storage or

infrequent use. Remember that either prolonged or improper storage can still result

in internal corrosion and/or deterioration of O-ring seals.

2. Have your regulator cleaned and adjusted frequently. The frequency will depend

upon the amount of use given the regulator and the conditions of use. However,

TUSA strongly recommends inspection, overhaul and scheduled parts replacement

at least once a year in order to ensure the optimum functioning of the regulator.

Certain parts require replacement at specific intervals. This work must be carried

out by a competent service facility. Use as rental equipment and/or in salt,

chlorinated (swimming pool), or polluted fresh water might require cleaning and

overhaul of the regulator every three to six months. Remember that chlorinated

Regulators

When using these regulators in cold water at temperatures of 10°C or below, be sure to

observe the following notices.

General Caution Items

* Before you use the regulator, be sure to receive specialized instruction on cold water

diving from a diving instruction authority so that you learn the necessary skills and

knowledge.

* Be sure to receive orientation for the diving environment.

* Be sure to obey the instructions of your instructors and guides.

Equipment Handling Caution Items

The conditions for freezing up of the regulator change in accordance with the breathing

conditions of its user (breathing volume, breathing speed, number of breaths) and the

environment conditions before and during use.

* Do not take shallow, fast breaths. It makes freezing occur more easily.

* To avoid free flow condition due to freezing NEVER push the purge button while the

regulator is outside of the water.

* Store the regulator at room temperature. When diving, store your regulator in its bag

to keep it warm until just before use.

* When waiting between dives, always keep your regulator warm. Do not leave it out in

a cold environment.

* Your regulator may freeze depending on the conditions. If your regulator freezes, it may

free flow. If it does, use breathing technique for free flow conditions.

* When diving in water temperatures of 10°C or below, always swim at a safe depth from

which you can perform an emergency swimming ascent.

SECTION VIII

“AIR REFRESHER” FILTER REPLACEMENT

(RS-350)

1. The timing for replacing the filter is the same as for the equipment overhaul. TUSA

strongly recommends that you have your filter replaced every 100 dives, or a year

after purchase or the last overhaul (or filter replacement) regardless of the condi-

tions of use.The TUSA repair facility will replace the filter during the overhaul, so be

sure to have your equipment overhauled at the specified interval. If you have

already had your equipment overhauled and only wish to replace the filter, you must

also have this work carried out at a specialist outlet or TUSA facility.

2. Never try to overhaul the equipment or replace the “Air Refresher” filter yourself, as

it could cause a serious accident.

FINAL NOTE

Service your Regulator often- your personal safety and the mechanical integrity

of your regulator depend on it.

water is an especially bad environment for regulators as the chlorine chemically

deteriorates the neoprene rubber components.

3. Regularly inspect the sintered filter in the inlet port of the first-stage. If it is

discolored or corroded, replacement by trained personnel is required. Also, at this

point, the entire regulator may need a general overhaul with replacement of all soft

seals and non-reusable components. Rust or aluminium oxide (grey powder)

deposits on the sintered filter are usually an indication that salt water has entered

the air cylinder and caused internal corrosion. At this time you air cylinder(s) should

be internally inspected by a qualified and competent service control and then

cleaned, or hydrostatically tested as required.

4. Do not disassemble your regulator. There are no adjustments which can or need

to be carried out by the user. Take the regulator to a qualified TUSA dealer or

service facility for service. Ensure that only original parts are used to service your

regulator.

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Tusa RS-812 Manual

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