Coltri Sub OCEAN 90 NR User manual

OCEAN 90 NR
USER MANUAL
(
AEROTECNICA COLTRI
®
S.p.A.
via Colli Storici 177 25010 San Martino della Battaglia
BRESCIA - ITALY
Tel: [phone] [phone]
Fax: [phone]
www.aerotecnicacoltri.it [email protected]
®

PRECAUTIONS
WARNING:
you should use the regulator only after you have passed a diving training centre that authorided to issue diving certificates. To use the
regulator properly, the following precautions must be taken.
• The regulator must be used in strict compliance with the instructions set out in this manual.
• The regulator must be usedonly for the purposes indicated in this manual.
• The regulator must be serviced and repaired only by approved service centres at the regular intervals specified in the warranty. In order to
ensure operating efficiency, use only manufacturer-approved spare parts.
• If the above conditions are not complied with the responsibility for any faults lies with the owner or user of the regulator.
APPLICATIONS
All regulators of Aerotecnica Coltri
®
S.p.A. have two stages. The first stage uses a piston or a diaphragm and the secon one uses an inlet valve.
The first stage is connected to the second stage by a low-pressure hose. In two-stage regulators the high-pressure air in the cylinders is reduced in
the first stage to about 10 Bar above ambient pressure. Ambient pressure varies according to diving depth. The air that reaches the second stage
is immediately available to the inlet valve but is supplied only when the diver breathes is slightly.
WARNING: the regulator that are the subject on this manual is certified for use in dives down to a maximum depth of 50 metres.
PRELIMINARY CHECKS
Before each dive, check all the regulator functions and check the parts of wear. If faults are found, do not use the regulator but
get it checked by an approved service
centre. Connect the first stage of the regulator to the cylinder using the fitting system that is
appropriate for the cylinder valve: a standard yoke assembly or a DIN screw connector for the cylinders using a DIN valve. With
yoke assemblied, the O-ring seal is positioned on the cylinder’s valve. With a DIN connector the O-ring seal is positioned at the
end of the connecting system. Check the O-ring for wear and replace it if necessary.
USE
Before opening the cylinder valve, try to breathe in throught the second stage mouthpiece. If is it impossible to do so the inlet valve and the exhaust
diaphragms are working correctly. If leaks occur, do not dive and contact a specialised service centre. Slowly open the cylinder valve and try to
breath in through the mouthpiece of the second stage, press the exhaust button of the middle of the cover of the second stage. The regulator must
regain its balance without leaks. Any air leaks mean that the regulator is not working correctly and must be repaired.
WARNING: EN 250/A1:2006 : The regulator complies with the standard EN250 but is not designed for more than one user simultaneously. If the
regulator is configured and used by more than one user at the same time, its water and breathing performances might not be compliant with the
requirements of the standard EN250.
COLD WATER DIVING
Avoid using the regulator in water below + 10° C. You must also have been awarded a certificate in cold-water diving before using the regulator.
If the regulator is used in water below 0° C do not use the regulator out of the water.
MAINTENANCE
All regulators of Aerotecnica Coltri
®
S.p.A. are made from material that is suitable for use in seawater and each parts is protected from oxidation
and has been approved for continuos use over many years. The regulators should nevertheless be tested every year at specialist centre.
CLEANING
After use, use the air left in the cylinder to dry the protective cap, to prevert water entering in the first stage. Protect the sintered filter by covering
it with the protective cap and rinse out the regulator with fresh water (not under pressure).
WARNING: during rising, do not press the manuale purge bottom of the second stage to prevent water from entering through the inlet valve. Leave
the regulator to dry in a dry place but do not expose to direct sunlight. Place it in a temperature that is protected from high temperatures and make
sure that the low-pressure hose that connects the first stage to the second stage uses a curve radius of at least 150 mm.
LUBRICATION
Only the O-rings require occasional lubrication. They must be lubricated with silicone oil and greases.
WARNING: under no circumstances use normal (non-silicone) oils because they could damage the regulator parts. Do not use silicone lubricants
for silicone parts (diaphragm, mouthpiece, valve seat plug) because such lubricants would cause irreparable damage.
Do not use alchol or solvents to clean plastic or rubber components.

Type : Balanced diaphragm.
Materials :
Body : Drawn brass copper plated, nickel-plated, chromium plated.
Yoke : Drawn forging brass, nickel-plated, chromium plated.
Diaphragm : Rubber
Spring : Stainless-steel.
Plating treatment :
Chrome plated.
Weight without hose :
INT 230 Bar 822 gr
DIN 230 Bar 658 gr
Ports : 2 HP, 4 LP
CERTIFIED CE EN 250 2000
Ocean 90 NR 1st stage
TECHNICAL FEATURES
Diaphragm
Spring
# 4 LP ports
# 2 HP ports
1st stage with DIN 230 Bar type.
Antifriction roll
Exhaust diaphragm
Venturi-assisted air injection system
Exhaust diaphragm
CERTIFIED CE EN 250 2000
Ocean 90 NR 2nd stage
TECHNICAL FEATURES
Shockproof Polycarbonate.
# 2 exhaust diaphragms
Materials:
Body : High resistance Polycarbonate.
Diaphragm : Silicone
Control lever : Stainless-steel.
Exhaust diaphragms : Silicone.
Mouthpiece : Silicone
Spring : Stainless-steel.
Hose length : 28.7”
Weight without hose : 186 gr

]
]
Ocean 90 NR 2nd stage
1 - Slide bar D.25031
2 - Clips holder filter
3 - Return spring system
4 - Adjusting spring
5 - INT conical filter
6 - Yoke
7 - Locking Yoke
8 - LP 3/8 plug
9 - LP 7/16 plug
10 - 1st stage ring diaphragm for regulation
11 - Locking O-ring
12 - Balancing chamber for MF4
13 - 1st stage plug
14 - Thrust washer
15 - Pilot boss
16 - Body MF4
17 - Poppet
18 - 1st stage “Compact” seating
19 - Plug holder INT
20 - Diaphragm washer hold
21 - Ring nut
22 - Ring holder
23 - R1st stage diaphragm
24 - BK Anties 1st stage diaphragm
25 - Wing nut
26 - OR. 2012 70-75 SH ø2.9 x ø1.78
27 - OR. 108 70 SH ø8.73 x ø1.78
28 - OR. 2031 SH ø7.66 x ø1.78 70 SH
29 - OR. 2037 70 SH ø9.25x ø1.78
30 - OR. 2056 70 SH ø14x ø1.78
31 - OR. 3050 90SH ø12.37x ø2.62
]
]
Ocean 90 NR 1st stage
10 - Manual regolation system
11 - Conical spring
12 - Chamber
13 - Nylon ring
14 - Silicone diaphragm
15 - Body
16 - Exhaust valve
17 - Silicone mouthpiece
18 - Nylon clam
19 - Hose-connector
19/a - Metering orifice
20 - O Ring
21 - Silicone shaft pad
22 - Valve seat
23 - Nut shaft
24 - Spacing bar
25 - Washer shaft
26 - Shaft
27 - Spring shaft
28 - Control lever valve
28/a - Needle for lever
50 - Hose
52 - O-ring hose connector