SMACO Mini Diving Cylinder User Manual

1. Product Description

Thank you for purchasing the SMACODIVE Regulator series! This user manual contains key information and detailed instructions for operating the product. To ensure your safety, please make sure to read and fully understand the manual before using the product. Follow the instructions strictly and use the product only within its intended purpose to ensure safety. It is prohibited to use the product for illegal activities.

1.1 Product Overview

This series of products is a lightweight and compact diving equipment designed for divers to use during travel or short-term diving activities.

The underwater usage time of this series of products is influenced by various factors such as breathing rate, diving depth, physical condition, skill level, and water temperature. Therefore, the usage duration may vary. To ensure safety, divers should monitor the pressure gauge to avoid accidents.

1.2 Suitable Audience and Scenarios

This series of products is versatile and suitable for a wide range of users and scenarios. Due to its portability, it plays an important role in various situations. For recreational divers, it is especially suitable for vacation or weekend diving trips, providing a convenient and effortless diving experience. Travel divers often choose the diving regulator due to its compact size and lightweight design, making it more convenient during travel. In addition, the diving regulator is also crucial as an emergency backup air source, which can be carried by water sports enthusiasts, crew members, coast guard personnel, and professional divers for emergency use. For diving instructors and guides, the diving regulator offers additional safety and convenience for teaching and guiding purposes.

2. Specifications

2.1 Product Specifications

2.2 Cylinder Construction

3. Product Structure

Refer to the diagram below to familiarize yourself with the names and functions of the components of the S300/S300PLUS/S500 models.

4. Safety Precautions and Warnings

This product is designed for use in standard conditions, suitable for safe waters up to 5 meters in depth, with water temperatures above 10°C.

When used as an emergency backup air source underwater, it is only suitable for recreational diving depths and should not be used as the primary air source.

Before using this product, it is strongly recommended that you participate in and obtain certification from a recognized training organization for scuba diving, as using this product without professional certification can be dangerous and may lead to severe injury or death.

This product is intended for use in waters above 10°C and must only be used in areas where the relevant authorities permit its use. Prior to use, carefully assess the surrounding conditions to ensure the safety of the water area. Be cautious to avoid collision with passing vessels.

Before use, ensure the product is inflated, and check for any damage or leakage. Do not use the product if it is damaged, leaking, or shows any other signs of malfunction.

When using this product, underwater visibility must be ≥3 meters to ensure communication with dive buddies and clear path identification.

Maximum filling pressure of this product is 20 MPa (200 bar / 3000 psi). Only compressed air suitable for human respiration may be used. Filling with pure oxygen or any gas not suitable for breathing is strictly prohibited (the gas must comply with EN 12021). Failure to comply may result in serious personal injury and may cause blockage or damage to the internal filtration components and air pathways, creating severe safety hazards.

Store the product in a cool, dry place, avoiding direct sunlight. Do not store it in the trunk of a car or in high-temperature environments. Do not throw the product into fire.

This product is a high-precision device; do not disassemble it casually. Unauthorized disassembly by non-professionals may cause damage to the product.

Do not use this product alone; it requires at least one other person to accompany you. When used in open water, a safety officer must be present.

In the event of danger, this product cannot provide personal safety protection; it can only supply a limited amount of compressed air as a breathing source.

After use, thoroughly clean the product with fresh water and soak it for about 1 hour. Dry it thoroughly before storing.

If the pressure gauge shows less than 2MPa, ascend to the surface and refill before use.

For first-time users, practice in shallow water before using the product.

It is strictly prohibited to use this product after consuming alcohol, as this could lead to severe consequences.

This product is only intended for individuals aged 14 and above who are in good health. Individuals aged 60 or above must undergo a comprehensive health evaluation by a doctor before use and may only use the product if deemed physically fit. Pregnant individuals, those with medical conditions, and other individuals whose health is unsuitable for use should not use this product.

This product complies with the EN250:2014 standard, and the manufacturer's certified maximum performance test depth is 50 meters (this depth is a performance test standard and does not represent the actual usable depth).

This product is designed for use by a single diver and is not equipped to support multiple divers simultaneously.

When observing pressure during the inflation process, maintain a safe distance from the pressure gauge. Do not look directly at the dial or position it facing your body to avoid accidental injury from sudden pressure increases.

5. Setup and Assembly

5.1 Check The Gas Cylinder

First, check that the cylinder is in good condition and ensure that there are no foreign objects or impurities inside the cylinder.

5.2 Product Assembly

Check the threads and sealing o-rings of all parts and the cylinder to ensure they are intact, undamaged, clean, and free of dirt. Refer to the video below and diagrams for assembly instructions. After confirming that all connections are secure, the product is ready for inflation and use.

5.3 Inflation

During the inflation process, check for any air leaks. If a leak is found, stop inflating immediately and investigate the cause. It is strictly prohibited to use pure oxygen or any gas that does not meet the requirements for human respiration. Using unqualified air may cause blockage in the product's filtration system or air pathways, affecting normal use and endangering respiratory health.

When the pressure inside the cylinder reaches 200 bar/20MPa/3000psi, stop the inflation immediately. The explosion-proof safety valve is an important safety device designed to release gas when the pressure is too high, thus protecting the equipment. Once the explosion-proof safety valve is activated, its internal burst disk will rupture, and the safety valve must be replaced before the product can be used again.

Common inflation methods include air compressors, high-pressure manual pumps, and adaptor fittings. Regardless of the tool used, ensure that it provides at least 200 bar/20MPa/3000psi of pressure; otherwise, the cylinder will not be fully inflated. When using an air compressor or high-pressure manual pump, an oil-water separator must be installed.

5.4 Exhaust Valve Depressurization

Please follow the pressure release method shown in Fig. 4.4.1 in the manual. Before disassembling, inspecting, or servicing the breathing apparatus, release the gas from the cylinder through the pressure relief valve and confirm that the pressure has been completely released.

If residual pressure remains in the cylinder, do not forcibly loosen or disassemble any components. Before disassembly, ensure that the pressure gauge reads zero.

6. Operating Instructions

6.1 Pre-Use Inspection

Pre-Dive Check: Check the pressure gauge to ensure the pressure has reached the desired inflation level and that there are no air leaks. Ensure all components are functioning properly. Inspect for any visible physical damage, such as broken or loose parts.

Press and release the exhaust button; the button should rebound smoothly to its original position. Then, bite the mouthpiece and inhale to ensure smooth airflow. To maintain the inflation pressure inside the cylinder, avoid unnecessary exhaust.

Wearing the Product: Depending on the model, secure the product in the appropriate position. It can be worn on the chest, waist, or on the back. Ensure the pressure gauge is easily visible and accessible.

6.2 Usage Instructions

a) Opening the Cylinder: Turn the main valve switch to open the cylinder, ensuring that air can flow out. (For the S300/S300PLUS models, they are designed to be in an always-open state, so there is no main valve switch. You can skip this step when using the S300/S300PLUS.)

b) Draining Water: Place the mouthpiece in your mouth. Before inhaling, you need to expel any water in the valve head. Gently press the exhaust button or exhale into the mouthpiece to expel the water. The specific operation methods are as follows:

c) Method 1: Completely cover the mouthpiece with your mouth, bite the mouthpiece's rubber part with your teeth, and close your mouth tightly. Press down on the exhaust button, and confirm that the released gas has fully expelled the water from the second-stage regulator. Afterward, you can begin normal breathing. Refer to Figure 5.2.1 in the manual for the specific operation.

d) Method 2: Completely cover the mouthpiece with your mouth, bite the mouthpiece's rubber part with your teeth, and exhale 2-3 times to ensure the water is completely expelled from the second-stage regulator. Afterward, you can begin normal breathing. Refer to Figure 5.2.2 in the manual for the specific operation.

Warning: If the water purging procedure is not performed before inhalation, water inside the second stage may enter the mouth and cause choking.

6.3 Removal

After completing the diving activity and returning to the surface or a safe depth, the regulator should be removed (REMOVAL) in a safe and orderly manner according to the product structure.

7. Troubleshooting

7.1 Gas Leak Detection and Repair

Solution: Submerge the entire product in water and observe the location of the leak. Ensure all components are tightly screwed and check for damaged or missing O-rings or other accessories. If an issue is found, tighten any loose parts, replace damaged components, or replace missing accessories to ensure proper function.

7.2 Difficulty Breathing or Air Leak

Solution: Adjust the internal release valve by rotating it slightly clockwise or counterclockwise until the appropriate breathing resistance is found. For specific adjustment instructions, refer to Figure 6.2.1 in the manual.

7.3 Unable to Inflate?

Solution:

1. Check the Inflation Tool: Ensure the inflation tool is working properly and that it is in good operating condition.
2. Check the Pressure Gauge: Open the main valve switch (if present), press the exhaust button, and check if gas is released. If gas is released but the pressure gauge shows no reading, the cylinder has been properly inflated, but the pressure gauge may be faulty and needs replacement.
3. Check the Inflation Connection: If the inflation tool is functioning but the cylinder is still not inflating or not fully inflated, check if the inflation connector is blocked or leaking. Replace any defective parts based on the inspection results.

7.4 Pressure Gauge Needle Does Not Move?

Solution: Check the connection between the pressure gauge and the cylinder. If the connection is secure but the needle still does not move, the pressure gauge may be faulty and should be replaced promptly.

7.5 Unable to Unscrew the Valve Head from the Cylinder?

Solution: Check the internal pressure of the cylinder and confirm that the pressure gauge shows that the cylinder is pressurized. If there is pressure, press the exhaust valve to release all the gas from the cylinder before attempting to unscrew the valve head.

7.6 Main Valve Switch Malfunction, Leaking After Being Closed?

Solution: Replace the internal sealing component of the main valve switch to ensure proper switch functionality.

8. Storage and Maintenance

8.1 Storage Environment

• The product should be stored in an environment with a temperature of 5°C to 30°C and relative humidity between 40% and 70%.
• It should be kept away from heat sources and direct sunlight within 1 meter.
• The storage room for the diving regulator should not contain oils, acids, alkalis, or other gases that may damage rubber.

8.2 Transportation Environment

The diving regulator series is compact and lightweight, making it easy to carry. During transportation, it should not be subjected to impacts or intense vibrations. It should be kept clean and protected from contact with oils, acids, alkalis, and other substances that may damage rubber and fabrics.

8.3 Product Maintenance

This product should be inspected or serviced once a year by an authorized dealer or professional diving agency to ensure proper function.

The cylinder needs to undergo a hydrostatic test every 5 years.

It is recommended to perform a visual inspection once a year, checking the internal and external surfaces of the cylinder for corrosion, dents, cracks, or other damage.

O-rings are wear parts; if damaged during use, they should be replaced immediately.

8.4 Disposal Conditions

The product must be disposed of if any of the following conditions occur:

• The product is damaged beyond repair, meaning it has reached the end-of-life standard and can no longer be used (e.g., cylinder rupture, damaged threads, or cylinder deformation).

8.5 Daily Maintenance

After use, clean the equipment with fresh water and soak it for about 1 hour. Dry it thoroughly before storing. If not handled according to this process, prolonged neglect may lead to blockages at the connection points.

9. Warranty and Support

The manufacturer provides a 12-month worry-free replacement or return policy if the product cannot be fixed. For any issues, please refer to the troubleshooting section or contact customer support.

This product complies with the EN250:2014 standard.