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Tusa RS-340 Manual

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Regulators
GB
17 18
Regulators
GB
Regulators
diving, thus reducing the load on the face during use. The main body materials are
super-tough nylon (heat pliable polyamide resin) reinforced with glass fiber for out-
standing hardness and shock resistance. The materials also offer superior tensile
strength, dimensional stability, heat resistance, weather resistance and chemical resis-
tance.
Intake resistance
* The second stage includes a director to forcibly guide air from the demand valve. That
prevents free flow while significantly lessening intake resistance.The result is one of the
lightest intake resistance values in the industry compared with products from other
companies.
New mouthpiece
The new mouthpiece, developed on the basis of ergonomic engineering, further
enhances the comfort of bite, fit, and stability. Even with a light bite, a high level of sta-
bility is achieved, so there is no fatigue from long periods of usage.
Venturi Adjustment Lever (RS-680, SS-80)
The addition of a venturi adjustment lever on the S-80 allows the regulator to power
assist the diver when underwater utilizing the natural venture effect. The diver can also
adjust the lever to prevent free flow such as on a surface swim.
Swivel joint (RS-350, 340, 654, 680, 670)
For optimum performance and comfort, a swivel joint is fitted between the second stage
and the joint section of the low pressure hose. The swivel joint allows flexibility of the
hose for eliminate hose tension at the mouthpiece for a more natural and comfortable
bite.
“Air Refresher” filter (RS-350)
There are two types of high tech filter built into the second stage. An active carbon filter
cleans the air and absorbs smells, while a metal fiber filer eliminates particles as small
as 100 microns.This makes sure that the cleanest and safest air is supplied to the diver.
S.E.A. -Sequential Exhaust Assist [PAT.P.] (RS-680)
The Sequential Exhaust Assist (S.E.A.) is an auxiliary exhaust valve, located on top
of the S-80 elliptical case to decrease primal exhaustion resistance.
SECTION III
PRE-DIVE PROCEDURES
WARNING
Do not attempt to connect low pressure hoses to the high pressure ports with the use
of an adapter. Improper connection will cause damage to the equipment and could
result in serious personal injury. Low pressure components are not intended to
withstand
pressures greater than 28Bar
≒
(400 PSI). When installing your accessory
hoses, avoid damaging the O-ring. Tighten gently, but firmly into the first stage housing.
SCUBA complying with EN 250 are not intended for more than one user to breathe from
at the same time.
If SCUBA are configured and used by more than one diver at the same time, then the
cold water and breathing performances may not fulfil the requirements of EN 250.
RS-350, 340
Always connect the Octopus Regulator to the portmarked with SS. Connecting to any
other port is strictly prohibited.
PRE-DIVE OPERATING INSTRUCTIONS
1. Position the tank valve so the outlet points toward the diver.
2. Remove the dust cap from the first stage inlet and place the yoke (or DIN adaptor)
in the center of the cylinder valve connection.
3. Position the first stage body so that the second stage hose goes over the right
shoulder of the diver.
4. Hand-tighten the yoke screw or DIN adoptorscrew.
5. Check all the hose connections to the first and second stages. If they can be
loosened by hand, they should be tightened with a wrench before pressurizing.
6. Check the submersible pressure gauge to make sure it indicates zero pressure.
7. Open the tank valve slowly to gradually allow air into the regulator.
NOTE: During this operation, depress the second stage purge button to reduce
shock to the valve mechanism. Do not perform this operation in a cold environment
below 10°C (50°F). Performing this in a cold environment may cause “freeze-up” of
the regulator which can render it inoperable. If this occurs, you should contact a
TUSA authorized service center.
8. Check the submersible pressure gauge to ensure that it indicates the proper tank
pressure.
… 25 …


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