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Regulators
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.
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 adoptor screw.
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.
9. Check the tank/regulator connection for leakage. If leakage exists, it may
