TANKS - Diving cylinder SEAC - Free user manual and instructions

Product type	Diving cylinder with valve
Brand	SEAC
Model	TANKS
Service pressure	232 bar
Connection thread	M25x2 (EN 144-1 standard)
Reference standard (valve)	EN250:2014
Notified body (valve)	CE 0426 (ITALCERT)
Notified body (cylinder)	CE 1370 (BUREAU VERITAS ITALIA)
Applicable directive (cylinder)	2014/68/EU (pressure equipment)
Maximum working depth	50 m / 162 feet
Authorized gas	Compressed air (compliant with EN 12021:2014)
Cylinder connection	M25x2 EN144-1:2000
CE marking (valve)	CE 0426/1370
Serial number	Format NNNN AA-MM/LLL
Valve installation	Compliant with EN ISO 13341:2010
Periodic maintenance	Check the test date before use
Repairs	Prohibited for the user; refer to an approved center
Modification	Prohibited, particularly on safety valves
Intended use	SCUBA diving
Conditions of use	Reserved for certified divers
Safety	Do not use with NITROX or other gas mixtures

Frequently Asked Questions - TANKS SEAC

What is the service pressure of the SEAC TANKS cylinder?

The service pressure is 232 bar. Always check that the valve and cylinder body support this pressure before use.

What maximum depth can I reach with this cylinder?

The maximum working depth is 50 meters (162 feet) in accordance with standard EN250:2014.

Can I use NITROX with this cylinder?

No, it is strictly prohibited to use oxygen-enriched gas mixtures (NITROX) with this cylinder. Use only breathable compressed air compliant with standard EN12021:2014.

How do I know if my cylinder is still valid?

The test date is engraved on the top of the cylinder, near the neck. Never use a cylinder whose periodic test has expired. Have tests carried out by an approved organization.

What should I do if I notice a leak on the cylinder or valve?

Stop using the product immediately and contact an approved service center or the manufacturer's technical service. Any leak, pressure instability, or suspicious noise requires professional inspection.

Can I repair or modify the valve myself?

No, repairs and modifications are prohibited. Never disassemble the valve and do not modify the safety valves. Entrust any intervention to qualified personnel.

What checks should be performed before each dive?

Before each dive, check the absence of leaks, the integrity of the valve, the pressure, and the gas compliance. Make sure the cylinder is properly attached to your harness. Follow the instructions of your training.

Does the cylinder require special maintenance?

Yes, regular maintenance is essential: visual inspection of the exterior condition, periodic hydrostatic testing, and valve maintenance by an approved professional. Respect the intervals recommended by regulations.

What type of connection does this cylinder have?

The cylinder is equipped with an M25x2 connection compliant with standard EN 144-1. This thread is standard for diving cylinders and compatible with certified regulators.

What certifications do SEAC TANKS cylinders have?

The valve is certified CE 0426 (ITALCERT) according to directive 89/686/EEC and the cylinder body is certified CE 1370 (BUREAU VERITAS) according to directive 2014/68/EU. The assembly is compliant with standard EN250:2014.

USER MANUAL TANKS SEAC

Congratulations on having chosen the quality and reliability of a SEAC product. The equipment you have purchased was made with selected and tested materials. Development and constant research allow us to evolve continually. Innovative construction processes, on-going testing, and true functionality tests developed in our research centers guarantee the reliability that sets apart all SEAC products.

READ THE ENTIRE USER'S MANUAL BEFORE USING THIS EQUIPMENT!

⚠ WARNING!

Diving equipment must be used by divers who are adequately prepared. Training courses for using SCUBA equipment must be taught by qualified instructors. If you want to use the valves on different tanks, ask a specialized shop or authorized dealer to perform the assembly.

⚠ WARNING!

The instructions that follow must be integrated with those for the other units in your SCUBA equipment. Before using your tank, carefully read the instructions provided in the corresponding manual.

CERTIFICATION C€

Valves: C€ 0426

The valves for the tank described in this manual have been tested and certified by Notified Body #0426 ITALCERT Viale Sarca 336, 20126, Milan, in conformity with Directive 89/686/EEC of 21 December 1989, as amended. The testing methods were performed in accordance with Standard EN250:2014, in application of that same directive, which sets out the conditions for marketing and essential safety requirements for Category I Personal Protective Equipment (PPE).

Valve marking rules

• OPERATING PRESSURE: 232BAR
• EC LOGO - NOTIFIED BODY NUMBER: CE 0426/1370
• REFERENCE STANDARD: EN250:14
• SERIAL NUMBER - YEAR-MONTH/PRODUCTION BATCH: NNNN YY-MM/LLL
• MANUFACTURER'S LOGO
• TANK CONNECTION: M25x2

Tank body: C€ 1370

The tanks described in this manual have been tested and certified by Notified Body # 1370 BUREAU VERITAS ITALIA S.p.A. Via Miramare 15 20126 Milan, in conformity with the Directive "Pressure equipment" # 2014/68/EU.

Assembled tank

The pressure set satisfies the essential safety requirements set forth in attachment I of Directive 2014/68/EU and the valve was assembled correctly and in accordance with the requirements of standard EN ISO 13341:2010.

References to EN250:2014 - Purpose - Definitions - Limits

Purpose: The requirements and tests provided for in the EN 250:14 Standard are aimed at providing a minimum safety level for the operation of diving breathing apparatus at a maximum depth of 50 m/162 feet.

SCUBA: Minimum equipment (EN250: 2014)

a) Air valves and tanks

b) Regulator

c) Pressure gauge or safety device, reserve or alarm
d) System for tank support, transport and connection to the diver, e.g. back-piece and/or straps
e) Head equipment (mouthpiece or complete mask or diving helmet)
f) Instructions for use.

SCUBA - Component Groups EN 250:14: The SCUBA equipment may consist of separate component units such as tanks, regulator, pressure gauge, harness. The valves described in this manual can be used in conjunction with tested tanks and with units comprising the SCUBA gear that are certified in accordance with directive 89/686/EEC as Class III devices and with standard EN250:2014. The air contained in the tanks must comply with the requirements for breathable air set forth in Standard EN 12Q21:2014.

SCUBA - EN250:2014 Requirements.

The tanks must be compliant with specific national and European regulations, they must be approved for use at normal operating pressure (check the testing certificate), and they must have M25x2 EN144-1:00 threading.

GENERAL WARNINGS

• Before using the tank or any other underwater diving product, you should attend a course taught by qualified instructors and obtain the relevant diving certificate. The use of diving equipment by non-certified divers is dangerous and can lead to serious accidents, or even death, for the diver and his/her diving companions.
• When assembling the tank unit, all possible measures were taken to deliver a product that is highly reliable over time. However, these measures can be rendered ineffective if the tank unit is not used correctly and if adequate maintenance is not performed. SEAC SUB declines all responsibility for any problems resulting from a failure to observe the recommendations provided in this manual.
• If you are not experienced in using this equipment, we recommend that you familiarize yourself with how it works during test dives at shallow depths and under favorable conditions; contact a qualified instructor for a refresher course if appropriate.

Suggestions and general warnings for using compressed gas tanks

1 There should be no doubts about the gas used (compressed atmospheric air), the load pressure, and the integrity of the system.

⚠ WARNING!

Do not use this or any other product in the SEAC range with other gases or oxygen enriched air mixtures (usually known as NITROX).

Failure to follow this recommendation could cause serious accidents or even death due to fire or explosions, or a serious deterioration in your equipment.

2 Always check the date of the most recent test. Never use expired tanks. Legal indications are stamped on the upper head near the neck of the tank.
3 Secure the tanks to be used as safely as possible (e.g., to the wall with a chain, on a cart fitted with a chain...).
4 If you notice operating defects, leaks in general, leaks from the safety valve, unstable output pressure, gas consumption that significantly exceeds your calculations, suspicious noises, freezing, or defects in the operation of the pressure gauges, stop using the product immediately and call a service center or the manufacturer's support.

They will advise you over the phone about what to do.

5 Do not make repairs or alterations to the equipment and do not tamper with the safety valves for any reason. These actions could result in serious harm to people and objects.
6 Make sure that the tank is completely empty before removing the valve.
7 In all cases, but especially when it is used with OXYGEN:

a) DO NOT GREASE
b) DO NOT USE in the presence of open flames or sources of heat
c) DO NOT USE tanks that have been exposed to the sun or to sources of heat
d) DO NOT HANDLE the equipment with dirty or sweaty hands or wipe it with rags that are not perfectly clean
e) CAREFULLY CHECK that the connections and seals are clean and intact.

8 Do not use tools to make it easier to open or close the valve. This must be done manually, applying a force of no greater than 7Nm for handwheels 60 mm or greater in diameter (3Nm for smaller handwheels). If pneumatic tools are used, only selects models with guaranteed torque control and reduced speed.
9 Always open the valve slowly after you have connected it to the usage source.
10 If you detect excessive resistance when opening or closing the valve (force of more than 7Nm), this is the first sign of a malfunction. To avoid creating dangerous situations, we recommend that you replace it.

Valves for 232 bar tanks

Tank valves are available in two versions to be used with tanks of maximum volume of 18 liters and pressure of 232 bar:

• Single tank with single connector (1 regulator)
• Single tank with double connector (2 regulators)

All the versions feature International yoke connectors (YOKE CGA 850 Maximum pressure 232 bar) and EN144-2 232 bar connection for the regulators.

WARNING!

To switch the yoke connection (YOKE CGA 850) to EN144-2 or vice versa, use an 8-mm hex wrench.

CONFORMITY TESTS

The maximum pressure drop, measured straddling the tank valve with a feed pressure kept constant at 50 bar, is less than 10bar.

IMPORTANT!

Modifications to the configuration of certified devices are not permitted; the notice must be saved for reference for this purpose.

DANGER

If it becomes necessary to replace the valve, only qualified and authorized personnel should perform this operation.

If replacing the valves, check that the threading on the tank and the valve correspond perfectly. Absolutely never force the valves while screwing. Also make sure that the threading is clean and intact.

Also make sure that you tighten the valves with torque wrench set to an operating torque equivalent to 100 Newton. The threading currently used and assembled is the M 25x2 type as specified in regulation EN144-1, but there are still tanks in

circulation that were manufactured in the past that have 3/4 gas threading. The greatest risk occurs when an M 25x2 valve is erroneously coupled with a 3/4 gas tank body.

These two thread types are absolutely not compatible with each other, and coupling them mistakenly can lead to explosions and even deadly accidents. To untrained eyes, the screwing may appear sufficient, but in reality the threads don't coincide perfectly. When recharging, or at any time after that, the valves will be expelled violently due to the pressure inside the tank, resulting in the consequences mentioned above.

The indication of the tank threading abbreviation is stamped onto the tank itself.

OPERATION TO PERFORM BEFORE THE DIVE

• Ensure that all the hoses have been correctly assembled onto the first stage, and check them for cuts, signs of wear, or other damage. If the hoses are loose enough to be unscrewed manually, they must be tightened with a wrench before pressurizing the equipment.
• Make sure that the first and second stages do not show signs of damage.
• Connect the tank to the support system (harness, BC).
• Position the tank control valve so that the valve opening is directed towards the diver.
• Remove the dust cap from the first stage port and position the yoke fitting so that it is centered on the tank valve opening.
• The first stage should be oriented in such a way that the hose leading to the second stage is routed over the diver's right shoulder.
• Fully tighten down the screw with the small ring on the regulator if using the EN144-2:00 connector.

If using a yoke type regulator fitting, tighten the yoke screw, making sure not to damage the OR gasket located on the valve fitting.

• Check the submersible pressure gauge, making sure that the pressure reading is zero.
• Very slowly open the tank valve, allowing air to enter the regulator gradually.

⚠ WARNING!

During this operation, press the second stage purge valve. This reduces the impact on the valve. DO NOT PERFORM THIS OPERATION AT AMBIENT TEMPERATURES BELOW 10°.

• Check the pressure gauge to ensure that it indicates the proper and sufficient tank pressure for your planned dive.
• Check the cylinder and tank connection for leakage. If you notice a leak, this could be because the regulator is assembled incorrectly on the tank valve or because of a damaged OR in the regulator.
• To confirm that the regulator delivers air properly, first exhale through the mouthpiece to blow any foreign matter from the second stage, then inhale. Repeating this operation a few times should identify any clear problems right away.

Diving in cold water (10°C or colder)

⚠ WARNING!

Inadequate technical training in diving in cold water (10°C or below) could lead to serious harm. Before diving in cold water, it is advisable to take a special training course under the supervision of a certified diving instructor. Dives in cold water require regulators that are specially designed and certified for this purpose, and you must correctly follow all the instructions provided in their user manuals.

USE AND MAINTENANCE

Operations to perform after the dive - Cleaning

Disassemble the regulator and the BC/backpack from the tank and wash the valve and the tank carefully with fresh water. Leave to dry thoroughly and store in a dry place shielded from direct light.

Maintenance

The O-rings on the adapter and the hoses should be replaced whenever they are damaged and therefore compromise the proper seal. To replace them, remove the damaged O-ring, taking care not to ruin the seal seat, and replace it with an O-ring of the same size and hardness.

All the O-rings used for high pressure have 80/90 SH hardness.

CERTIFICATE OF GUARANTEE

SEAC SUB S.p.A. guarantees the correct operation of this product as described in this document.

The warranty has a duration of 2 (two) years in accordance with current European regulations.

The warranty herein can be exercised according to the conditions and limits expressly indicated below:

1 The warranty lasts for 2 (two) years from the date the product is purchased from an authorized SEAC SUB S.p.A. dealer, and no additional prior or subsequent formalities are required to validate it.
2 The warranty is acknowledged only to the original buyer of the product at a SEAC SUB S.p.A. authorized dealer.
Being a strictly personal warranty, it is not transferable to third parties unless previously and explicitly authorized by SEAC SUB S.p.A.
3 The warranty covers all of and only the malfunctions due to:
- intrinsic defects caused by the use of materials considered unsuitable;
- clear errors in the design, manufacturing, or assembling of the product or its components;
- incorrect or inadequate instructions and recommendations for use.
4 The warranty terminates automatically, and with immediate effect, following repairs, modifications, transformations, adjustments or tampering in general, carried out on the finished product or parts of it, that were not authorized in advance by SEAC SUB S.p.A. or that were performed by non-authorized personnel.
5 The warranty entitles you to free repair in the shortest possible time, or to a full free replacement of the product (at the sole discretion of SEAC SUB S.p.A.) or parts of it whenever a malfunctioning defect specifically described in item 3 above is acknowledged by SEAC SUB S.p.A..

1. This warranty may also be exercised by shipping the product believed to be defective to SEAC SUB S.p.A.. The authorized intermediary for this operation must be the SEAC SUB S.p.A. dealer where the product was purchased. If this is feasibly impossible, upon prior authorization, any other SEAC SUB S.p.A. dealer may be authorized to send the defective product.

In order to exercise the warranty, the product must be accompanied by proof of purchase in the form of a copy of the receipt or invoice (or other equivalent fiscal record showing the name of the authorized SEAC SUB S.p.A. dealer from which the product was purchased as well as the date of purchase).

Whenever SEAC SUB S.p.A. receives a product that:

• is not accompanied by proof of purchase having the above mentioned characteristics
• is in such condition as to determine the termination of the warranty in accordance with the provisions of item 4 above
• has defects resulting from external causes outside those specifically mentioned under item 3 above
• has been used improperly and/or for uses other than those for which the product was designed

SEAC SUB S.p.A. will not perform any operations on the product, and will immediately advise the sender or authorized dealer.

If the sender still wishes the service to be performed, the sender will forward a request to SEAC SUB S.p.A. within the subsequent fifteen working days; in this request he/she must expressly state that he/she is willing to sustain all the costs relevant to said service (labor, spare parts if any, and shipping charges).

Failing this, SEAC SUB S.p.A. will return the product at the expense and care of the recipient.