The valve must be fully open before divestart. The Octopus or the second safety regula-tor should be used in PRE-DIVE position and with the appropriate cap fitted on the mouthpiece to prevent the entrance of fo- reign matters or accidental air delivery. When the regulator is not held in yourmouth at the time of plunging into the water, it is advisable to submerge it com- pletely to prevent air discharge due to its high sensitivity.

BEFORE EACH DIVE

The regulator must always be transportedseparately so as to prevent it from being in contact with the other components of the equipment or with other heavy or pointed objects.Toassemble the regulator properly onto thevalves, proceed as follows:
ENGLISH When assembling a first stage with YOKEconnection, check the O-Ring embedded in the valve; in case of THREAD connec- tion, the O-ring is housed in the first stage. The O-ring must be in perfect condition,free from cuts or porosity; it is advisable to have some spare ones, so that it may be re- placed at once in case the above signs of damage are detected. Do not rotate the first stage connectedwith the cylinder with the system under pressure.

Warning!

Check that the regulations placed on theDiamond second stage are set in such a way as to fully exploit the advantages pro- vided. The use of suitable containers for mouth-piece protection will prevent such inconve- nience and will also provide a cover for the passage inside the second stage, thus re- moving the risks of sand and dirt introduc- tion into it.

DURING THE DIVE

Check that all the hoses are properly con- nected to the first stage and that they do not show apparent signs of wear or damage. When the regulator is not held in yourmouth, air self-delivery may occur. This in- convenience may be easily eliminated by rotating the regulator upside down while checking that the same has been previou- sly filled with water. Open the valve let out a small quantity ofcompressed air, thus clearing the nozzle from any foreign matter. Remove the filter protection cap insertedon the relevant connections. Check for filter integrity and proper cleaning. it is recommended to letout a breath of air from the second stage by keeping the latter slightly depressed Position the first stage on the valve andstart screwing it up using the knob, in case of yoke connection, or the swivel screw, in case of thread connection. Slowly open the cylinder valve counter-clockwise taking care to avoid violent and sudden air flow through the regulator; at the same time,

AFTER EACH DIVE AND PERIODIC MAINTENANCE

do not carry out this operation if ambient temperature is lower than +10°C.

warning!

Depress twice or three times the purgebutton of the second stage to discharge dust or foreign matter. Finally, breathe from the second stage to make sure that everything works properly. Your regulator is made of very high-qualitymaterials and has undergone exhaustive sea- water testing. However, every precaution shall be taken in order to protect the equip- ment from the corrosive action of salt. Below is the procedure to be followed aftersurfacing or on marine board at the end of the dive.The first operation to be carried out after thedive is to disassemble the equipment used. Close the valve by turning it clockwise; di-scharge all the residual air remaining in the regulator system by actuating the se- cond stage pushbutton. This operation may require several se-conds, as the air leaving the pressure gau- Do not carry out this operation if ambient temperature is lower than +10°C. Check the cylinder internal pressure bymeans of the appropriate pressure gauge.

warning!

In order to optimize the positioning of thedifferent valves, it is recommended to pla- ce the main and secondary regulators on the right hand side and the service valves (pressure gauge hose, jacket hose, and dry diving suit hose) on the left.
SEAC SUB 20