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Tusa RS-811 Manual

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- 27 -
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
22
GB
Regulators
21
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.
… 28 …


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