JJ-CCR DiveCAN
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Photography copyright: Sami Paakkarinen 2012 Reproduction and changes of this document and its content is prohibited without written approval from JJ-CCR ApS. All information in this document has been carefully analyzed and is believed to be accurate. However, it is not possible to guarantee its accuracy and all liability is excluded. Cited companies and/ or product names are trademarks belonging to the respective companies. 2017 JJ-CCR ApS – 2.00 / Revision 06

• Never use the JJ-CCR Rebreather without receiving specific equipment training (basic course or crossover). It is essential receiving training from a factory approved instructor and from a factory approved training agency. • These user instructions do not replace training with the equipment and are not directions for diving with closed circuit equipment. • As with other equipment, it is possible that a Rebreather may fail at any time! It is therefore essential that an autonomous bailout system, independent of the equipment, be taken by the diver on every dive. The bailout system must be...

3.2.1 Vertical head down position 11 3.2.7 Use of high oxygen content gases 12 3.2.8 Potential long term health effects 12 4.6 Back-mounted counter lungs (BMCL) 17 4.11 Soda lime canister (axial) 22 4.12 Soda lime canister (radial) 23 4.14 Breathing hose with DSV (Dive Surface Valve) 26

5.4 ADV (Automatic Diluent Valve) 37 5.7 DSV (Dive Surface Valve) 37 6.11.2 Checking calibration during a dive 52 6.15 Switch CC/BO (Between Closed and Open Circuit Bailout Mode) 54 6.16.6 NDL Display (GF99, CEIL, NDL, @+5 or A+5 display) 62

6.20.3 Low Setpoint (Mode Setup) 68 6.20.4 High Setpoint (Mode Setup) 69 6.20.8 NDL Display (Deco Setup) 70 6.20.16 Depth Units (Display Setup) 76 6.20.17 Temp. Units (Display Setup) 76 6.20.20 Flip Screen (Display Setup) 77 6.20.29 Reset to Defaults (System Setup) 80 6.20.31 System Info (Advanced Config) 81 6.20.32 Battery Info (Advanced Config) 81 6.20.33 Main Color (Advanced Config 1) 82 6.20.34 Title Color (Advanced Config 1) 82 6.20.35 End Dive Delay (Advanced Config 1) 82 6.20.36 Bat Icon (Advanced Config...

8 VPM-B / VPM-GFS decompression model 99 9.3 Shortly after entering the water 102

Congratulations on purchasing the JJ-CCR Rebreather. We are certain that you will experience many unforgettable dives using this equipment. The development and testing of the JJ-CCR Rebreather started back in 2006. During this period the equipment was able to demonstrate exceptional reliability over more than 1500 diving hours at a wide range of locations around the world prior the first public release. The product development philosophy is aligned with the following criteria: • Strict application of the KISS principle: ”Keep It Simple Stupid”. • The Rebreather must be extremely solid,...

3.1 JJ-CCR Scope of functionality • Highly robust aluminium housing to which it is possible to secure up to 4 diving tanks (2 - 12 litre) using conventional tank belts. • Self-filling soda lime canister (axial). • Heavy duty stand. • Integrated handle. • Back-mounted counter lungs. • Redundant power supply: One battery for the controller, one battery for the HUD and two parallel batteries for the solenoid. None of the batteries are integrated into the circuit. • Integrated ADV (Automatic Diluent Valve). • DSV (Dive Surface Valve). • Manual supplemental O2 and diluent valves with the option...

Technical specifications

The JJ-CCR does not meet the requirements of EN 14143 section 5.6.1.4 (Hydrostatic imbalance test) with a pitch of -90 degrees (Vertical head down position). A vertical head down position during a dive is an extremely unusual position for a diver and normally never used when not absolutely necessary. Within a vertical head down position an unintentional activation or freeflow of the ADV can possibly occur. To avoid it when the diver is forced to a vertical head down position he can close the in line shut-off valve on the ADV and use the manual diluent adding valve to maintain an optimized...

The oxygen setpoint range of the JJ-CCR is from 0.4 to 1.5 bar (low and high). The setpoint range creates breathing gas mixture representing an inspired oxygen partial pressure between 0.4 bar and 1.5 bar. The default setpoints are 0.7 (low) and 1.3 (high) and they are user selectable within the listed setpoint range. The oxygen fraction of the mixture depends upon depth and set point. The following table shows the oxygen and nitrogen fraction with diluent "Air" and setpoint 0.7 and 1.3 to a depth of 50 meters. The nitrogen fraction will vary depending upon the selected diluent for a dive....

This chapter deals with the basic assembly of the JJ-CCR Rebreather. The equipment is fully assembled at the time of delivery. This chapter is primarily intended to show how the basic assembly takes place. At the same time, it acts as a guideline for correctly reassembling the equipment if it proves necessary to disassemble it for any reason (e.g. transportation for a dive trip). Base unit The base unit of the JJ-CCR consists of a highly stable aluminium housing. The guide rails shown in the image hold the selected diving tanks in the correct position and they are also used to attach the...

The following image shows the handle, which is screwed into the two tubes on the base unit. The handle facilitates easy lifting of the JJ-CCR under all circumstances. The two tubes can be used for an additional trim weight. Important: Regardless of whether trim weights are used in the tubes or not, the overall trim of the JJ-CCR will not change! The only difference is the required quantity of lead on the diver’s lead belt. It is possible to use two types of trim weights. One can either opt for lead shot or lead bars. If lead shot is used then it is first necessary to insert a small piece...