Owner`s manual

O ptima FX Owner’s Manual

Ch. 6 Pg. 9

Attaching Counter-lungs and Hoses

Once the canister is assembled, the ADV and T-pieces are properly attached to the counter-lungs

and the functionality of the DSV has been tested, the rest of the loop can be assembled. The

counter-lungs should first be secured to the top of the case by the fastex buckles . The inhalation

counter-lung on the diver’s left and the exhalation counter-lung on the diver’s right. The fastex

buckles will only accept the proper counter-lung. Once the lungs are secured to the case they

should be secured to the harness by the velcro straps on the underside of each counter-lung.

The next step is to route the LP hoses and spgs. The SPGs should be

routed to the inside of each counter-lung and secured using the velcro

loop. The LP hoses for the manual diluent and oxygen addition

valves should be routed towards the outside of the appropriate

counter-lung and through the loop on each counter-lung. The manual

addition valves on each counter-lung should be rotated to properly

connect to the LP hoses. Test that each connection is secure.

The canister can now be connected to the T-piece and ADV using the

short color coded hoses. The RED hose connects the HEAD to the

ADV using a left handed thread (tightens counter-clockwise). The

BLACK hose connects the T-Piece to the END-CAP using a right

handed thread (tightens clockwise). The O-rings on the hose

connectors should be inspected for debris and the inner surfaces of

the t-piece and ADV for lubrication. These fittings use a fine thread

and care should be taken to avoid cross threading the fitting. If the

connectors does not engage DO NOT FORCE IT.