iQsub FX CCR CE Rebreather, chest rebreather review

By ValtersTechnical diving
iQsub FX-CCR

What is iQsub FX CCR?

The iQsub FX-CCR is an innovative, military-grade, chest-mount rebreather designed for military, technical and recreational diving. Its design provides optimal ergonomics, a compact form factor and excellent performance, making it the ideal choice for divers who want maximum freedom and comfort underwater, confirms the diving club “Daivings” technical diving instructor. Log in and try eCCR CE Rebreather with an instructor (Introduction or full CCR training courses, rebreather diving).

iQsub FX-CCR: the technological solution

FX-CCRdesigned and built by a Czech company iQsub, is the latest advancement in rebreather technology. With its superior manufacturing and compact design, the FX-CCR sets a new standard for chest-mounted rebreathers.

Standard equipment includes radial scrubber, Shrimp blow-by valve (BOV) or dive/surface valve (DSV), removable O2 sensor cartridge, QuickLoc fittings for all breathing hoses and BOV. Manual connection valves (MAV) for both O2 and diluent, Swagelock QC6 fittings (for diluent supply via dil MAV), automatic diluent valve (ADV), locking cable head connection, 2 liter steel O2 cylinder, Shearwater controller, Shearwater HUD, oxygen first stage regulator and 3 O2 sensors as standard equipment.

Electronics are made by the world-renowned Shearwater (handheld or NERD device) that interacts with the controller and main electronics located in the head of the device, with the batteries completely outside the breathing circuit.

1. Rebreather construction

The iQsub FX-CCR consists of several main components:

  • Chest Module: The main unit, which attaches to the diver's chest, contains the scrubber, breathing bag, oxygen sensors, electronics and control system. It is made of high-strength polymers and stainless steel, ensuring durability and longevity.
  • Scrubber: Utilizes a radial flow design that optimizes CO2 absorption efficiency. The scrubber uses pre-packed absorbent cartridges, ensuring quick and easy replacement.
  • Breathing Bag: Integrated into the chest module, ensures flexible gas volume and optimal breathing work.
  • Gas Cylinders: Two small cylinders, one containing oxygen and the other containing diluent, attach to the chest module. The cylinders have precision valves with pressure gauges that ensure a controlled gas supply.
  • Electronics and Control System: Integrated, state-of-the-art electronics provide precise control and monitoring of oxygen partial pressure (pO2). The system includes an automatic oxygen supply (solenoid), an emergency system and a head-up display (HUD).
  • Head-Up Display (HUD): A goggle-mounted HUD display that shows a diver's pO2, battery charge level, and other essential information.
  • Belts and Straps: Adjustable straps ensure comfortable and secure attachment of the chest module.

2. Technical Specifications

  • Weight: Approximately 15 kg fully assembled (without gas cylinders).
  • Maximum Diving Depth: 100 meters (EN 14143 certified).
  • Scrubber Operating Time: Up to 4 hours (depending on activity level and water temperature).
  • Number of Oxygen Sensors: 3 (with automatic calibration).
  • pO2 Control Range: 0.7 – 1.6 bar.
  • Battery Life: Up to 12 hours.
  • Gas Cylinder Capacity: 2 x 3 liters (recommended).

3. Testing Reviews and Safety

The iQsub FX-CCR has undergone rigorous testing and meets EN 14143 safety standards. Divers appreciate the following features:

  • Ergonomic Design: The chest mount provides excellent freedom of movement and a low drag coefficient.
  • Easy to Use: Intuitive interface and automatic calibration make it easy to use.
  • High Reliability: State-of-the-art electronics and durable materials ensure reliable operation.
  • Quick Replacement: Quick replacement of scrubber and gas cylinders makes the rebreather ready for the next puncture.

4. Gas Planning with iQsub FX-CCR

Gas planning with iQsub FX-CCR should be done carefully, taking into account the following factors:

  • Diluent Selection: Choose a diluent according to the planned depth and dive profile (air, nitrox, trimix).
  • Oxygen Consumption: Calculate oxygen consumption according to dive depth, activity level and dive duration.
  • CO2 Absorption Capacity: Select the appropriate scrubber cartridge according to the planned dive time.
  • Backup Gas Plan: Plan for backup gas supplies and emergency procedures.

5. Frequently Asked Questions

  • What is the price of iQsub FX CCR? The price starts at around 9,000 euros.
  • Is the iQsub FX-CCR suitable for beginners? Beginners need special training and certification.
  • What are the maintenance intervals for the iQsub FX-CCR? It is recommended to have annual maintenance performed by a certified technician.
  • Where can I buy iQsub FX-CCR? Contact your iQsub official distributor.

6. Conclusion

The iQsub FX-CCR is an innovative and high-performance rebreather that offers excellent comfort, ergonomics and safety. It is the ideal solution for divers who want to enjoy rebreather diving with maximum freedom and minimum effort. To ensure safe diving, it is necessary to follow safety measures, attend training with certified instructors and carry out regular equipment maintenance.

I hope this comprehensive article is helpful. If you have any further questions, feel free to ask!