Tusa RS1207 Manual Del Usuario página 6

USE
Before the dive :
Please note that the procedures outlined below do not apply to cold
water regulators which requires specific preparation and use.
tightening the yoke screw or DIN kit (do not over tighten).
pressure gauge.
seconds to ensure proper air delivery.
Venturi + and Sens. Adjust. knob open
starting your dive.
Venturi lever
This lever, located on the side of the second stage Housing, enables the
diver get maximum Venturi assistance upon initial inhalation, the air flow
is maintained without additional effort.
IMPORTANT : On the surface to avoid any free flow resulting from surface
waves and / or sudden entry in the water , the diver should keep the lever
pushed towards the front in the - minus position. This position should be
maintained whenever the second stage is used as an octopus for a safe
second stage.
At the beginning of the dive, the diver should push the Venturi lever in
the + / plus position, to obtain optimum breathing characteristics. The + /
plus position is the "dive mode" position.