JJ-CCR User Manual
Contents
1. JJ CCR Rebreather eCCR User Manual Version 1 00 Revision 03 JJ CCR Every utilization is inadmissible without written consent from JJ CCR This applies particularly to copies translation micro filming and the feeding and processing in electronic systems E g download from the internet All details in this document are worked out with care and are presented to the best of our knowledge However we accept no liability for the accuracy of this information The listed companies and or product names are trademarks of the respective companies Some parts of the text for the controller are taken from the original manual of the manufacturer Author Dietmar Inabnit JJ CCR Rebreather Warming Do not attempt to use the JJ CCR without attending a basic training or cross over course even you are an experienced rebreather diver Warning This user manual does not replace a proper JJ CCR training course nor is it a guideline for CCR rebreather diving Waring As with any technology a rebreather can also fail at any time We strongly advise that you always carry enough bailout gas to comfortably finish the dive in OC mode Your knowledge skills and practiced procedures are your best defense Warning If you don t agree with the above warnings don t dive a rebreather at all A Pleaseread A We highly recommend that you are take the time to read this user manual carefully 2010 JJ CCR2. a FF 7 E E a Ko ee a OU F p Fit the spring loaded pressure plate and hand tighten the nut Tap again around the scrubber to settle the absorbent Tighten the nut carefully again Please do not over tighten The scrubber is correctly filled when you shake it and it does not rattle 4 7 Lid The lid and scrubber are connected by a turn and sealed by an o ring Please carefully inspect this o ring prior to assembly Do not over tighten 2010 JJ CCR Version 1 00 Revision 03 16 JJ CCR Rebreather Prior to inserting the lid and scrubber into the canister carefully inspect and lubricate the two o rings This is very important otherwise the rebreather can leak and will not pass the positive and negative pre dive check Align the button with the hole Depress the button and start to gently push the lid down When the button clicks out through the hole in the canister you are done and the lid with the scrubber is in the correct position Take the controller and the HUD and pass them through the handle Now connect the oxygen LP hose to the lid Only hand tighten 2010 JJ CCR Version 1 00 Revision 03 17 JJ CCR Rebreather Take the two breathing hoses and pass them through the handle as well The setup should now look like in the picture below Connect the breathing hoses to the t piece and to the ADV To prevent incorrect assembly the thread on the inhale sid
3. Pushing MENU will continue to increment the gas number Note The A denotes the active gas You cannot delete the active gas If you try it will generate an error You can edit it but you cannot set both the O2 and HE to 00 The controller will display all 5 gas entries available to allow you to enter new gasses Pressing MENU one more time when the fifth gas is displayed will return you to the Define Gas menu item 6 13 4 NDL Display The NDL Display option allows you to display three different values during the dive The display can be changed during the dive to provide different information Pushing SELECT will take you into the edit menu The first choice available will be NDL If you select NDL the NDL will always be displayed during the dive whether or not you have a decompression ceiling The next selection is CEIL With this setting as long as the NDL time is O you have a decompression ceiling the raw ceiling will be displayed instead of the NDL This is the equivalent of the Man on a rope It will show your ceiling without it being rounded up to the next even 10 foot or 3 meter stop Please note that there is very limited information on the effects of following a continuous ceiling instead of formal stops and only moving up to the next stop when the current stop has cleared 2010 JJ CCR Version 1 00 Revision 03 39 JJ CCR Rebreather The manufacturer of the controller holds the opinion
4. has been passed the menu will also revert to Low SP without changing the original setting 2010 JJ CCR Version 1 00 Revision 03 37 JJ CCR Rebreather 6 13 2 High SP High Setpoint The high setpoint function works exactly like the low setpoint function 6 13 3 Define Gas This function allows you to set up 5 gasses in Closed Circuit and 5 gasses in Open Circuit mode You must be in Open Circuit to edit open circuit gasses and you must be in Closed Circuit to edit closed circuit diluents For each gas you can select the percentage of oxygen and helium in the gas Pushing SELECT when Define Gas is displayed presents the function to define gas number 1 Pushing the MENU button will display the next gas Pushing SELECT will allow you to edit the current gas The gas contents are edited one digit at a time The asterisk will show you the digit being edited Pushing SELECT saves the current digit and moves on to the next digit Each push of the MENU button will increment the digit being edited When the digit reaches 9 it will roll over to 0 Pushing SELECT will lock in the current digit and move on to the next digit 2010 JJ CCR Version 1 00 Revision 03 38 JJ CCR Rebreather Pushing SELECT on the last digit will finish editing that gas and bring you back to the gas number Any gasses that have both oxygen and helium set to O will not be displayed in the Select Gas function
5. 03 13 JJ CCR Rebreather Attach the shortest LP hose from the diluent first stage to the ADV There are NO tools required Please only hand tighten everything else is completely unnecessary The second LP hose with the inflator connector is used for the wing inflator The next picture shows the standard position of the submersible pressure gauges This position has many advantages You can easily take a look at the pressure during the pre dive check but during the dive they will not disturb you If you would like to see the current pressure on your oxygen or diluent tank you can very easily reach them and pull them forward Of course you can also route the hoses over the shoulder if you want to always have them in front of you 2010 JJ CCR Version 1 00 Revision 03 14 JJ CCR Rebreather 4 6 Scrubber The standard JJ CCR comes with an axial scrubber As an additional option a radial scrubber is also available Take one of the water resistant filters and put it into the bottom of the scrubber Make sure that the filter is located probably on the bottom with no gaps around the edges Fill the scrubber approximately halfway and lightly tap around the scrubber to level the absorbent 2010 JJ CCR Version 1 00 Revision 03 15 JJ CCR Rebreather Fill the scrubber till there is a gap of 4 5mm on top Slightly tap around the scrubber to level the absorbent Afterwards place the second filter on top
6. One battery for the controller one battery for the HUD and two batteries for the solenoid None of them within the loop Built in ADV Automatic diluent valve Build in BOV Open circuit bailout valve Manual oxygen adding valve with off board gas connection option Manual diluent adding valve is available as option Independent HUD with real time display of the PPO2 for all three cells Reliable controller that includes a multi gas dive computer Based on the Shearwater Predator 2010 JJ CCR Version 1 00 Revision 03 6 JJ CCR Rebreather 3 2 Technical Specification 70cm x 40cm x 26cm including the handle Weight 32kg ready to use with 2 x 3 liter tanks gm 19kg without tanks and absorbent Absorbent 2 3kg of Sofnolime 797 Axial scrubber Duration 168 min Measurement 40 Meters 40 It min air 1 6 It min CO2 Absorbent 3kg of Sofnolime 797 Radial scrubber Duration 230 min Measurement 40m 40 It min air 1 6 It min CO2 2 x 3 6v Lithium SAFT 14500 One for the controller and one for the HUD Batteries 2 x 6v Lithium Energizer CR P2 Used in parallel for the solenoid Counter lung volume 8 liter per counter lung Depth limits Max 40m with air diluent Max 100m with trimix diluent Max 185m depth limit controller handset WARNING Diving deeper than 100m carries a lot of additional risk DIN 5 8 Intermediate pressure 9 0 to 10 bar Two oxygen setpoints low and high switchabl
7. Upgrade This function is used to load software updates 6 16 10 Ulock Code The unlock code is entered to change models and to set other features It serves a variety of purposes As in other functions MENU increments and SELECT saves and moves to the next digit SELECT on the last position ends the function Invalid codes are rejected without changing the existing features The numbers are in the hexadecimal system The digits are 0 9 and A F They represent a base 16 number system commonly used to represent large numbers compactly 2010 JJ CCR Version 1 00 Revision 03 49 JJ CCR Rebreather Pressing SELECT when not in a menu will bring up the status displays There are several status displays and each push SELECT will move to the next display Another SELECT push with the last display shown will return to the primary display The status displays will time out after about 6 seconds and return to the primary display The status displays vary depending on the model For example the OC versions don t show the diluent PPO2 since it is the same as the Average PPO2 shown on the first status display OC Mode OC Mode 46 1 Maximum depth on the current or previous dive 23 The current CNS exposure 21 Current PPO2 CC Mode CC Mode 46 1 Maximum depth on the current or previous dive 23 The current CNS exposure 7 The actual setpoint 70 The average measured PPO2 OC Mode OC Mode 984 The ba
8. Version 1 00 Revision 03 JJ CCR Rebreather 1 Contents 1 CONTENTS sogea eee canes eneessc sda aganeeieedanncoeeneuscneedaeas 3 1 1 Revision History 4 2 Preface a apeae bese eeneairoeneaiseateauecitacnasaeaeeates cosas anisneenstmdbamesesiimanaasnbaeesbatiaaneaaneas 5 3 JI CCR OVER VICW wo secciennsecuciunscanecwanesimowenewsneentandeaneadewesvecinusseundseesnesies 6 3 1 JJ CCR Features 6 3 2 Technical Specification 7 4 How to assemble the JJ CCR ce cceecccccseeeeeeeeeeeseneeeeseneeneseeeeeeenees 8 4 1 Main Body 8 4 2 Hoses and First Stages 10 4 3 Wing 12 4 4 BMCL Back Mounted Counterlung 12 4 5 Back Plate and Harness 13 4 6 Scrubber 15 4 7 Lid 16 4 8 Breathing Hose with BOV 19 5 Main Components cccccceecceeeseeeneeneeeeecneeeesensensseesonsenesenseneseesonees 20 5 1 Lid 20 5 1 1 Battery Compartment 20 5 1 2 Oxygen Cells 21 5 1 3 Solenoid 22 5 2 Controller 23 5 3 HUD 23 5 3 1 HUD Calibration 24 9 3 2 HUD Reading 24 5 4 ADV Automatic Diluent Valve 25 5 5 Manual Oxygen Add Valve 25 5 6 BOV Bailout Valve 26 6 COmntroller ccccecceeeceeceeeeeeeeeeeceeceeceeceeeeeeeeeeseensnsnsaeeneeaecneaeeneseesaes 27 6 1 General Overview 27 6 2 Features 28 6 3 Switching On 29 6 4 Buttons 29 6 4 1 Left MENU 29 6 4 2 Right SELECT 30 6 5 Main Screen 31 6 6 Menu 32 6 7 Menu Reference 33 6 8 Turn Off 33 6 9 Calibrate 33 6 9 1 PPO2 Monitoring 34 6 10 Switch Setpoint 35 6 11
9. from the gasses you have created The selected gas will be used either as the diluent in closed circuit mode or the breathing gas in open circuit mode Gasses are always ordered from the most to least oxygen content Press the Confirm button when Select Gas is displayed and the first available diluent will be displayed Use the MENU button to increment the diluent to the one you want then press the Confirm button to select that diluent If you increment past the number of gasses available the display will fall back out to the Select Gas display without changing the selected gas Use the Confirm button to select a gas The bottom line of the display shows the selected gas The system maintains two sets of gases one for open circuit and one for closed circuit The way they operate is very similar to the way car radios work with AM and FM stations When you are listening to an FM station and you push a station selection button it will take you to another FM station If you add a new station it will be an FM station Similarly if you are in the AM mode adding or deleting a station would add or delete an AM station With radio station gases when you are in open circuit adding deleting or selecting a gas will refer to an open circuit gas Just like the way FM stations are selected when your radio is in FM mode only closed circuit gasses are available in the closed circuit mode When you switch to open circuit
10. 92 JJ CCR Rebreather 5 3 1 HUD Calibration The calibration of the HUD should be done immediately after the calibration of the controller We recommend to always calibrate the HUD and controller at the same time 1 Open the oxygen tank valve Open the mouthpiece CC mode Switch on the HUD Start the calibration sequence on the controller Chapter 6 9 a oe me IS As soon as the controller is calibrated push the HUD button three times within one second It might take a little practice to get this but it is intended to prevent accidental calibrations 6 If you successfully initiate the calibration sequence all three LED s will be bright red for a few seconds If you don t see that the HUD is not calibrated 7 After the bright red signal from all LED s they should flash orange once That means the PPO2 is between 0 95 and 1 05 The actual value it uses for the calibration is 0 98 If a sensor fails the calibration the LED for this sensor will flash once red and once green 9 3 2 HUD Reading The HUD allows you to read the current PPO2 for each oxygen cell This feature replaces the need for a second handset with a display The reading of the HUD is also very easy and straight forward One orange flash is showing a PPO2 of 1 00 to be exact between 0 95 and 1 05 Each green flash is the number of tenths above a PPO2 of 1 0 E g three green flashes on one LED are a showing a PPO2 of 1 3 for this oxygen cell Each red fla
11. 99 feet and from 2 999 meters lf you enter a setting that is outside the allowed range the existing valid setting is retained with no change 6 16 2 Conservatism The controller implements Gradient Factors by using levels of conservatism For a more detailed explanation of their meaning please refer to Erik Baker s excellent articles Clearing Up The Confusion About Deep Stops and Understanding M values The articles are readily available on the web You might also want to search for Gradient Factors on the web Pressing SELECT will enter the GF edit mode Pressing MENU will increment the digit 2010 JJ CCR Version 1 00 Revision 03 45 JJ CCR Rebreather SELECT will save the current digit and move on to the next digit SELECT on the last digit will save the new conservatism setting and return to the Conservatism menu item 16 3 Switch to Feet Meter Each push of SELECT switches back and forth between meters and feet It also switches the temperature scale The menu item always shows the destination If the display is Switch to Meters then the current setting is feet 2010 JJ CCR Version 1 00 Revision 03 46 JJ CCR Rebreather 6 16 4 Date The date menu item allows the date to be set Enter the edit function by pressing CONFIRM The date is edited like other items by using MENU to increment and the SELECT button to accept the digit The date and time will have t
12. Select Gas 35 6 12 Switch OC CC 36 6 13 Dive Setup 36 6 13 1 Low SP Low Setpoint 37 6 13 2 High SP High Setpoint 38 6 13 3 Define Gas 38 6 13 4 NDL Display 39 2010 JJ CCR Version 1 00 Revision 03 3 JJ CCR Rebreather 6 14 Dive Logt 41 6 14 1 Display Log 41 6 14 2 Upload Log 42 6 15 Setpoint gt 19 42 6 16 System Setup 43 6 16 1 Auto SP Switch 43 6 16 2 Conservatism 45 6 16 3 Switch to Feet Meter 46 6 16 4 Date 47 6 16 5 Time 47 6 16 6 Flip Screen 48 6 16 7 Calibrate O2 48 6 16 8 Solenoid Speed 49 6 16 9 Load Upgrade 49 6 16 10 Ulock Code 49 6 17 Error Displays 52 6 18 Battery Change 55 T Pre Dive CheCK s sssssnnssnnnunnnnnnnnnnnnnrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnna 57 7 41 Preparing on Land 57 7 2 Before Dive 58 8 POST DIVO oinin E E E E E On 58 9 Clean ean i 59 9 1 Light Cleaning 59 9 2 Full Cleaning 59 Revision History First revision of the JJ CCR manual Pre and post dive check added Changes for controller firmware 24 added Changes for controller firmware 28 added 2010 JJ CCR Version 1 00 Revision 03 oy ee JJ CCR Rebreather Thank you very much for buying a JJ CCR rebreather We are sure that you will have many enjoyable dives with it The JJ CCR rebreather has been designed and tested since 2006 with more than 1000 operating hours under water in different locations around the world The philosophy we follow with our product developmen
13. ause the mV reading is out of range During calibration display of O2 Cell millivolts turns yellow when millivolts are outside of acceptable range range varies with O2 and altitude but at 1 ATM and 98 O2 the acceptable range is 30mV to 70mV The calibration takes into account the altitude at which the controller was turned on For example if the altitude was 885 mBar or 87 ATA then with a 98 calibration gas the sensors would calibrate to 85 The Calibrate menu item will not display during a dive 6 9 1 PPO2 Monitoring The PPO2 used to calculate the decompression is the average of all three sensors after voting This is the case when no sensor has been voted out A sensor that has been voted out is displayed in yellow and starts flashing In this case the decompression calculation will use the average of the two left over sensors PPO2 values below 0 4 or higher than 1 6 will flash red After switching to OC the PPO2 used for the calculation will be the PPO2 of the selected gas at the current depth 2010 JJ CCR Version 1 00 Revision 03 34 JJ CCR Rebreather 6 10 Switch Setpoint When SELECT is pushed with either of these displays the displayed setpoint on the right will be selected During a dive the Switch Setpoint menu item will be the first item displayed The Turn Off and Calibrate displays are disabled 6 11 Select Gas This menu item allows you to pick a gas
14. cover A Please never use the ADV to lift the rebreather This can seriously damage the counterlung 5 5 Manual Oxygen Add Valve The manual oxygen add valve allows you to add oxygen into the loop It will feed in more oxygen the longer the button is pressed This allows a very accurate PPO2 to be maintained while using the rebreather in manual mode You can also unplug the hose and turn the valve around 180 degrees to attach an off board gas E g your onboard oxygen is empty but you have a bailout stage with oxygen or another gas that you would like to manually add to the loop 2010 JJ CCR Version 1 00 Revision 03 25 JJ CCR Rebreather 5 6 BOV Bailout Valve The JJ CCR rebreather comes with a bailout valve BOV The BOV is very compact and neutral in the water It allows you with just a little turn to switch at any time from closed circuit to open circuit There is a lever and a HUD holder on the BOV The position of the HUD defines whether the BOV is in OC or CC mode When you can see the HUD e g the HUD is above the BOV as in the first picture below you are in closed circuit CC When you can t see the HUD as in the second picture below you are in open circuit OC Web WT waht 17111 Please attach the LP hose to the BOV only hand tight Never use a tool for it A You can adjust the regulator with a 3 16 Allen key Turn it clockwise to increase and counter clockwise to decr
15. d you can rinse the exhale hose with fresh water Make sure that you are holding the lid a bit angular so that the water passes straight through Never try this with the inhale hose as you will soak the oxygen cells with water For a full cleaning you can remove these two hoses as well 2010 JJ CCR Version 1 00 Revision 03 59
16. e as often as required and under water changeable 0 4 to 1 5 bar low and high Low 0 4 bar High 1 6 bar Standard 4 C to 32 C Operating temperature range Short term air 10 C to 50 C Long term storage 5 C to 20 C Oxygen warning 2010 JJ CCR Version 1 00 Revision 03 JJ CCR Rebreather 4 How to assemble the JJ CCR This chapter covers a basic overview on how to assemble the JJ CCR rebreather Don t be afraid You will not get the rebreather delivered in single pieces The standard and the light version of the rebreather are already assembled This chapter provides additional information for you to see how everything was put together and it is a guideline after disassembly of the rebreather for whatever reason when you don t remember how it should be reassembled 4 1 Main Body The main body of the JJ CCR is the aluminium canister The rails you see on the picture are used for the tank straps and to keep the attached tanks in the correct position Py On the front of the canister you can see the two bolt holder and a tube on the left and right side 2010 JJ CCR Version 1 00 Revision 03 8 JJ CCR Rebreather On the picture you can see which type of bolt should be used and how the bolt is inserted into the holder The bolt is used to attach the wing counter lungs and back plate afterwards If you are planning to use a larger high than normal heavy duty back plate you maybe have
17. e is clockwise and the one on the exhale side is counter clockwise Hint The breathing hose from the centre of the lid is the one for the inhale side and has to go the ADV A Please never use the ADV nor the t piece to lift the rebreather This can seriously damage the counterlung 2010 JJ CCR Version 1 00 Revision 03 18 JJ CCR Rebreather 4 8 Breathing Hose with BOV Now you can attach the breathing hose with the BOV Before you attach the hose please always check the flapper valves The arrow on the top of the BOV shows the flow direction The connection on the inhale side is clockwise and on the exhale side it is counter clockwise A Please never use the breathing hose with the BOV to lift the rebreather This can seriously damage the counterlung Take the HUD and pass it through the two o rings on the breathing hose and press it into the HUD holder on the BOV Take the last LP diluent hose and connect it to the BOV After this your JJ CCR rebreather should look the same as in the picture below This completes the chapter how to assemble the JJ CCR Warning Your JJ CCR is NOT ready to dive yet First you have to do the complete pre dive check Chapter 7 You will find more detailed information about the lid ADV HUD and controller within the corresponding chapters 2010 JJ CCR Version 1 00 Revision 03 19 JJ CCR Rebreather 5 Main Components This chapter will explain s
18. ease the breathing resistance 2010 JJ CCR Version 1 00 Revision 03 26 JJ CCR Rebreather 6 Controller The JJ CCR rebreather comes equipped with a Shearwater Predator Controller which also incorporates a multi gas nitrox trimix heliox multi mode decompression computer The firmware has dedicated features and functions especially developed for the JJ CCR rebreather 6 1 General Overview The controller is hardwired to the lid of JJ CCR rebreather The main part of the top face is the huge high resolution OLED display On the right side behind the small hole is the sensor for the ambient light The OLED display automatically brightens as ambient light increases On both the left and right side is a button Via these two buttons you have complete access to all operations of the controller On the right side is the battery compartment This can be opened very easily with a coin The 3 6v Lithium battery SAFT 14500 is user changeable 2010 JJ CCR Version 1 00 Revision 03 2 JJ CCR Rebreather 6 2 Features 320 x 160 pixel color OLED display Bluetooth interface Buehlmann algorithm decompression User configurable gradient factor conservatism Trimix Heliox Nitrox Air gases Automatic switch on by depth pressure or water contacts Automatic ambient light sensing OLED display Auto calibration mode User selectable oxygen percentage for calibration Configurable automatic or ma
19. ediately 10 minutes of dive time A6 meter per minute ascent rate The ascent rate indicator shows 6 levels of ascent rate Each block represents either 10 fom or 3 mpm The first three bars are displayed in green 4 to 5 bars are displayed in yellow and all 6 bars together are displayed in red When the ascent rate is greater than 6 units the whole block will be filled in red and starts to flash Stop at 24 meters for 1 minute If you are above the indicated stop depth the stop depth will flash The next line has the three O2 sensor readings They will display PPO2 normally but if both buttons are pressed simultaneously the display briefly switches to mV status display for a few seconds If a sensor is voted out it will display the current value in yellow and it will flash The value will not be considered in the average PPO2 PPO2 values below 0 4 or higher than 1 6 will flash red The next row is the title for the bottom line This title changes frequently in the menu system to provide additional information about the bottom line The controller is in closed circuit CC mode The actual used gas is a 10 50 trimix 10 oxygen and 50 helium If there is a gas programmed in the current mode OC or CC that would normally be used at the current depth the system will display the gas contents in red to remind you to either switch gases or remove the gas if you aren t using it The no decompression limit NDL is
20. es not complete all of its tasks in the time allotted It can happen occasionally from a transient problem like a battery bounce after an impact It can also be the result of a hardware problem 2010 JJ CCR Version 1 00 Revision 03 53 JJ CCR Rebreather Upgrade Reset Brownout Reset Internal Hardware Failures This reset shows up after a software update It shows that the computer has been rebooted after the software update This error usually occurs when the battery dies while the computer is asleep If the battery gets too low to maintain system integrity the hardware will force the system into reset The following messages are reporting internal hardware failures The system will continue to retry and may recover but they would normally mean that something that should never happen has happened These messages should always be recorded and reported to the factory or your local service center This is not an exhaustive list There are other errors that could be reported and more checks are added with each software update 2010 JJ CCR Version 1 00 Revision 03 54 JJ CCR Rebreather 6 18 Battery Change The controller has a battery compartment in the side of the case To access it unscrew the battery cap with a large coin ri Carefully pull out the battery holder To prevent battery bounce and rattling its a tight fit so you will need something like a dental pick or a paper cl
21. gged dive Each time MENU is pressed the controller will display an earlier dive until all of the stored dives have been displayed The system will store about 20 hours of dives Pressing MENU when the last dive is displayed will exit the menu Pressing SELECT on any dive will complete the log viewing and move to the next sub menu item 2010 JJ CCR Version 1 00 Revision 03 41 JJ CCR Rebreather 6 14 2 Upload Log The second menu item is Upload Log Pressing CONFIRM will set up the system to upload the stored log information via Bluetooth The Windows software is provided free for download on the Shearwater website 6 15 Setpoint gt 19 This menu item will only be displayed on the surface It allows the solenoid to be turned off while on the surface when the loop is exposed to air This prevents the solenoid from firing continuously It is mainly used while uploading logs or other maintenance functions To switch back to normal low setpoint select the Switch Setpoint menu item The setpoint will also switch to normal low setpoint if a dive is started with the 19 setpoint selected 2010 JJ CCR Version 1 00 Revision 03 42 JJ CCR Rebreather 6 16 System Setup System Setup contains configuration settings that are only set between dives This menu item doesn t appear during dives Each of the items in the System Setup menu can only be accessed on the surface Auto SP Switch S
22. have a very clear and easy hose routing on the rebreather and to only use a minimal quantity of them This is one of reasons why the JJ CCR looks so streamlined when fully assembled The first stage with the M26 handwheel and green submersible pressure gauge is used for oxygen One of the LP hose will be connected to the head feeding the solenoid and the second one goes to the manual oxygen adding button The first stage with the DIN 5 8 handwheel and black submersible pressure gauge is used for the diluent On this one you will notice a very small Y block with three ports It is used to attach 3 LP hoses One LP goes to the ADV one to the wing inflator and the last one to the BOV 2010 JJ CCR Version 1 00 Revision 03 10 JJ CCR Rebreather On the next picture you can see how the first stages are attached to the tanks and the different hose routing of the HP and LP hoses Please make sure that you route the hoses exactly as seen on the picture 7 The next picture shows the correct position of the Y block and the two oxygen LP hoses The hoses must lie flush with the canister 2010 JJ CCR Version 1 00 Revision 03 11 JJ CCR Rebreather 4 3 Wing The next step is to attach the wing The JJ CCR rebreather can be used with various types of standard wings that are available on the market But not all of them will fit correctly Very important are two points The elbow for the corrugated hose has to be o
23. have confirming values as seen on the second picture There is no way to know the actual PPO2 and the average PPOZ2 will be calculated as 0 00 Low Battery EXT This alarm appears when the voltage on the external solenoid batteries is low The solenoid may still be firing but the batteries must be replaced before any further diving 2010 JJ CCR Version 1 00 Revision 03 52 JJ CCR Rebreather Low Battery INT Solenoid Alert Fast Ascent Missed Deco Stop Tissues Cleared Watchdog Reset This alarm shows that the internal battery in the controller needs to be changed The controller will flash the battery symbol in red and show a text message If this alarm occurs corrective action must be taken at once Even if the solenoid can be heard to fire it is not functioning correctly This alarm is a notification that there has either been a very fast ascent for a short period of time or that there has been an ascent of more than 66 fom 20 mpm maintained for over a minute This alarm may return after being dismissed if the condition occurs again The alarm occurs when the diver has been above the minimum depth for a decompression stop for more than one minute This alarm will only appear once during a dive but it will also appear once on the surface after the dive This alarm will show every time the controller loses power All decompression information has been lost This alarm happens when the computer do
24. ice centre 2010 JJ CCR Version 1 00 Revision 03 22 JJ CCR Rebreather 5 2 Controller The JJ CCR rebreather comes with a Shearwater Predator Controller which also incorporates a multi gas nitrox trimix heliox multi mode decompression computer The firmware has dedicated features and functions especially for the JJ CCR rebreather Please refer to chapter 6 for a detailed description 5 3 HUD The JJ CCR rebreather comes with a HUD The HUD runs completely independently of the controller It uses its own power supply and electronics The HUD monitors all three oxygen cells and displays each PPO2 via three LED s Each one displays the value for one cell The first LED on the HUD is for cell 1 the second for cell 2 and the third for cell 3 The cells numbers correspond to the display order on your controller as well Each LED within the HUD is a dual color LED green and red If both LED s are on at the same time it will become orange The button to activate the HUD is on top if the lid One push turns it on and another push will switch it off Please make sure that you turn on the HUD before you re in the water Should you forget to do so only your dive buddy can turn it on for you When you turn it on and you get orange flashing LED s for 30 seconds it indicates low battery If this is the case you should replace the battery for the HUD as soon as possible 2010 JJ CCR Version 1 00 Revision 03
25. ime it cannot be switched off 6 4 Buttons Via the two buttons you can access the complete operation of the controller 6 4 1 Left MENU The left button MENU can be used to scroll through the menu When the Switch Setpoint menu item is displayed MENU will move to the Select Gas menu item 2010 JJ CCR Version 1 00 Revision 03 29 JJ CCR Rebreather a hii the menu Select Gas a short press on the left button will display the next 6 4 2 Right SELECT The right button SELECT is used to accept the current choice E g when you press the right button Te within the Switch Setpoint menu you will change the current setpoint to the displayed value E g 1 3 Or within the Select Gas menu you accept the current choice 2010 JJ CCR Version 1 00 Revision 03 30 JJ CCR Rebreather 6 5 Main Screen The display has five rows There are two title areas and three data display areas Across the top line is the title for the first row of information This area only changes during the display of the dive log The first data area shows depth battery warning dive time ascent rate first stop depth and first stop time Itis showing a depth of 24 7 meters A low battery alarm The low battery indicator glows yellow after the battery registers less than 3 28V for 30 seconds Below 3 15V the battery indicator will flash red and you will need to change the battery imm
26. into account a worst case scenario You can never carry too much bailout gas Mount the tanks on the rebreather PB Mount the lid with the attached scrubber in the rebreather a ae Do a negative and positive pressure check for the lid Attach all hoses and take care with all o rings Ensure that the flapper valves within the BOV breathing hose are working correctly a open the wo tank valves and check the submersible pressure gauges Make a positive pressure check Use the mouthpiece to fill the loop completely with air The t pieces have to come into a horizontal position Close the mouthpiece and wait The positive check is successful when the t pieces stay in the horizontal position and do not sag down Make a negative pressure check Close tank valves Use the mouthpiece and create a vacuum within the loop The indication for a proper vacuum is the position of the ADV diaphragm Close the mouthpiece and wait If the position of the ADV diaphragm does not change the negative pressure check is OK Also when you open the mouthpiece and you hear air being sucked in this also shows that the test was successful 2010 JJ CCR Version 1 00 Revision 03 57 JJ CCR Rebreather 7 2 Before Dive It is highly recommended that you perform a bubble check within the first meters of your dive Never start your descent without doing this check oe ad 01 1 DY AVL This chapter covers the complete post dive list of the JJ CCR rebrea
27. ip to pull out the holder Pull out the battery holder and change the battery The battery is a Saft 14500 The wires come from the main compartment of the controller through to the battery compartment on one side of the battery compartment The bottom of the battery holder is flat 2010 JJ CCR Version 1 00 Revision 03 55 JJ CCR Rebreather The bottom needs to be aligned with the wires as they feed through the case Carefully fold the wires along the bottom of the holder and insert back into the compartment Care must be taken not to pinch and score the wires Inspect and if necessary apply a light coat of silicone to the O ring in the battery cap Reinstall the battery cap taking care not to pinch or deform the O ring Finger tighten with a coin 2010 JJ CCR Version 1 00 Revision 03 56 JJ CCR Rebreather 7 Pre Dive Check This chapter covers the complete pre dive check list of the JJ CCR rebreather Please use it all the time you are planning to do a dive with the unit 7 1 Preparing on Land Step Description Do you feel yourself healthy If not please do not dive Do you still have remaining scrubber time for the planned dive If not change the scrubber Never try to save some money on absorbent Analyze the content of your oxygen and diluent cylinders Is there enough pressure in both cylinders for the planned dive 4 Don t forget to have sufficient bailout for the dive taking
28. l ways First it can be used to calculate an aggressive ascent that still has some justification in decompression science For example if a diver were to lose a significant portion of their gas and needed to get shallow fast they could ascend until they reached a gradient of 90 then stop until it dropped to 80 then ascend to 90 again etc That would produce a Buehlmann like profile with very little conservatism In an emergency that may be an acceptable risk Another use might be to do a slower ascent on a sightseeing dive but to stay in the decompression zone by keeping the gradient above 0 Another use would be to observe the rapidly increasing gradient in the last 10 feet to the surface and slow that ascent All of this is based on gradient theory that may be completely false There is significant disagreement in the decompression research community about the nature and practice of decompression Any techniques described here should be considered experimental but the concepts may be useful to the advanced diver 2010 JJ CCR Version 1 00 Revision 03 40 JJ CCR Rebreather 6 14 Dive Logt The dive log menu item will not appear during a dive The log can only be examined or uploaded on the surface The dive log submenu is accessed by pressing SELECT Display log Upload log 6 14 1 Display Log The first menu item within the Dive Log mode is the Display Log item Pressing SELECT will display the last lo
29. n the left side or in front of the left side E g some DIR style wings that have it in the middle of the wing will not fit the JJ CCR And the top of the wing should be as small as possible Otherwise a fully inflated wing can press the breathing hoses together and impede your breathing comfort 4 4 BMCL Back Mounted Counterlung The next item is the back mounted counterlung The holes will allow you to mount it in different positions On top of the counterlung you can see the ADV on the left and the T piece with the manual oxygen inflator valve on the right side A Please never use the ADV nor the t piece to lift the rebreather This can seriously damage the counterlung 2010 JJ CCR Version 1 00 Revision 03 12 JJ CCR Rebreather 4 5 Back Plate and Harness Now you can mount the back plate with the harness On top of the counterlung you have on the left and right side webbing with Velcro Open it put in the harness and then reclose it Afterwards it should look like the right picture You can use any standard back plate and any kind of harness with your JJ CCR l Attach the oxygen LP hose with the inflator connection to the manual oxygen adding valve You can thread the manual oxygen adding valve through a D ring as seen in the picture below This is the best way to ensure it stays in the same position and you will never have to search for it during a dive 2010 JJ CCR Version 1 00 Revision
30. nabled They also control customization The last two digits are the software version 2010 JJ CCR Version 1 00 Revision 03 51 JJ CCR Rebreather 6 17 Error Displays The system has several displays that alert an error condition All of these displays share a common limitation of error alarms There is no way to distinguish between an error alarm that is not in alarm and an error alarm that is broken For example if an alarm is silent when it is not in alarm and is silent when it is broken then there is no way to be sure that the alarm isn t broken So by all means respond to these alarms if you see them but NEVER depend on them Each of the alarms will display the message in yellow until dismissed The error is dismissed by pressing SELECT Other functions continue to operate as normal so that the MENU button will take you into the menu and a push on both buttons will show the millivolt display The error message will keep returning until it is dismissed with a SELECT High PP02 This message will appear if the average PPO2 goes above 1 6 for more than 10 seconds It will come back after being dismissed if the situation occurs again Low PP02 This message will appear if the average PPO2 goes below 0 4 for more than a few seconds It will come back after being dismissed if the situation occurs again Another condition will also cause the Low PPO2 display to appear the controller does not have two sensors that
31. nual setpoint switching Setpoint low and high can be changed during a dive Setpoint and sensor values displayed while in menus Handset crush depth exceeds 185 meters 5 open and 5 closed circuit programmable gases Gases can be switched and changed during a dive No lockout Millivolt display for all cells on demand End user updateable firmware via Bluetooth High altitude diving mode Easy to read and very simple to use Adaptive menus Ascent rate display Battery warning internal and external Battery voltage display internal and external Metric and imperial CNS tracking Flip screen option PC download via Bluetooth Internal dive logbook 2010 JJ CCR Version 1 00 Revision 03 28 JJ CCR Rebreather 6 3 Switching On To switch on the controller you have to press both buttons simultaneously After this you will briefly see the JJ CCR logo on the screen followed by the main screen A You should switch on the controller on the surface to get the current ambient pressure used for high altitude decompression If the controller switches on via the water contacts it will automatically take sea level as reference for the ambient pressure A The controller switches off automatically after 10 minutes on the surface But only when the water contacts are dry A During the first 2 minutes after surfacing the controller stays in the surface mode but during this t
32. o be re entered after a battery change 16 5 Time The time menu item allows the time to be set Enter the edit function by pressing SELECT The time is edited like other items by using the MENU button to increment and the SELECT button to accept the digit 2010 JJ CCR Version 1 00 Revision 03 47 JJ CCR Rebreather 6 16 6 Flip Screen This function displays the contents of the screen upside down This is used for systems with a permanent connection to a rebreather It allows the controller to be worn on the right arm The functions of the two buttons will also be rotated 6 16 7 Calibrate O2 This allows the user to set the expected PPO2 for calibration When pure oxygen isn t available such as when the oxygen is generated by a membrane system The oxygen in that case might be 96 O2 with a few percent of Argon If any change is made in this screen the current calibration will be discarded The controller must be re calibrated with the new settings A For the JJ CCR rebreather please set it to 100 when you are using pure oxygen 2010 JJ CCR Version 1 00 Revision 03 48 JJ CCR Rebreather 6 16 8 Solenoid Speed The firing pattern of the solenoid can be changed between fast and slow The FAST setting uses frequent short injections of oxygen and is generally more accurate The SLOW setting is more familiar to many users and this is the default setting on the JJ CCR rebreather 6 16 9 Load
33. ome of the main components of the JJ CCR rebreather as well as some maintenance tasks required 5 1 Lid The lid with the three oxygen sensors solenoid battery compartment the hardwired controller and HUD is the brain of the JJ CCR rebreather On the right side is the connection to attach to oxygen LP hose for the solenoid The button on the left side is to switch on off and calibrate the HUD The cover with the JJ CCR COM engraving is the lid for the battery compartment Important Please always handle the lid with care 5 1 1 Battery Compartment To open the battery compartment of the JJ CCR rebreather you have to remove the 10 screws The JJ CCR rebreather has very low power consumption The batteries will last between 6 12 months so you don t have to open the battery compartment very often 2010 JJ CCR Version 1 00 Revision 03 20 JJ CCR Rebreather A unique design feature of the JJ CCR rebreather is the location of the batteries As you can see in the picture none of the batteries lie within the loop and the battery compartment is completely sealed By doing this the batteries will never have a moisture problem The batteries are always at atmospheric pressure so you will also never have a problem with the batteries caused by fluctuating pressure during ascent and descent Additionally flooding the breathing loop will have no impact on the batteries The two 6v lithium batteries Energizer CR P2 are u
34. rometric pressure in millibars 30 85 The conservatism setting CC Mode CC Mode 21 PPO2 of the active diluent 984 The barometric pressure in millibars 30 85 The conservatism setting The next display shows the altitude that the controller was at when it was turned on This altitude is saved and used for depth O2 sensor calibration and decompression calculations It is important to turn the controller on before diving to adjust the altitude 2010 JJ CCR Version 1 00 Revision 03 50 JJ CCR Rebreather The next display shows the water temperature the voltage of the external solenoid battery and the voltage of the internal 3 6V lithium battery The external solenoid battery is only updated when the solenoid is firing This is done because the battery voltage can be erroneously high when solenoid is not on If you see Ext V 0 0 after turning on this may be because the solenoid has not yet fired The next display shows the current millivolt coming from the oxygen cells This display shows the actual date and time This display is not available during a dive It shows the current surface interval The last display shows the serial number model and version of the controller The version is in three parts The first number is the model The three models are 1 for display 2 for controller and 3 for controller The next 4 digits are feature configuration For example they control whether helium is e
35. sed in parallel for the solenoid Please always replace both batteries at the same time You can check the current voltage via the status screen on your controller You will also get a low battery warning on the controller when the voltage is getting too low The 3 6v lithium SAFT 14500 is used for the HUD Please ensure that you install the battery into the holder the correct way There is a and sign on the bottom of the housing We recommend changing the battery for the HUD at the same time that you replace the other two batteries 5 1 2 Oxygen Cells The JJ CCR rebreather uses three oxygen cells Teledyne R 22APD or JJ CCR cells The cells can be changed within seconds and there is no special tool required 2010 JJ CCR Version 1 00 Revision 03 sJ lt JJ CCR Rebreather The numbers for the oxygen cells are 1 2 and 3 You will find these numbers next to the connection for wires on the lid and also above each oxygen cell The JJ CCR comes with 3 wires to connect the oxygen cells to the lid The wire for cell 1 is the shortest one and for cell 3 the longest one al 5 1 3 Solenoid The JJ CCR rebreather uses a special low power consumption solenoid The failure mode of the solenoid is always in closed position this dramatically reduces the possible risk of an oxygen toxicity hit at depth Servicing of the solenoid may only be carried out by the manufacturer or an authorized JJ CCR serv
36. sh is the number of tenths below a PPO2 of 1 0 E g three red flashes on one LED are showing a PPO2 of 0 7 for this oxygen cell Hashes oesi OOOO Each LED flashes once orange with a short break between This is showing a PPO2 of 1 0 for all three cells Each LED flashes once green with a short break between This is showing a PPO2 of 1 1 for all three cells Each LED flashes three times green with a short break between This is showing a PPO2 of 1 3 for all three cells Each LED flashes once red with a short break between This is showing a PPO2 of 0 9 for all three cells Each LED flashes three times red with a short break between This is showing a PPO2 of 0 7 for all three cells 2010 JJ CCR Version 1 00 Revision 03 24 JJ CCR Rebreather The duration between flash sequences is always the same around 5 seconds If the PPO2 is more than 0 50 away from 1 00 the HUD increases the power to the LED s so they get brighter At a PPO2 of 0 20 you will see three very bright red LED s and they are flashing continuously This is the HUD alert for a very low PPO2 5 4 ADV Automatic Diluent Valve The JJ CCR rebreather comes with an ADV Automatic Diluent Valve The ADV operates like a second stage and will automatically feed diluent into the loop when needed substantial negative pressure within the loop The ADV requires no adjustment You can also operate the ADV manually by pushing on the diaphragm
37. t is to strictly follow our design philosophy which is based on the following criteria Keep everything simple and stupid KISS principle The rebreather must be very strong versatile and reliable The rebreather must be easy to use maintain and service Use easily obtained parts to allow field repairs Support a wide range of tanks without the need of special adaptation Provide a complete ready to use package and not a basic unit with a hundred different additional options Provide very high redundancy E g separate batteries for the controller HUD and solenoid none of them within the loop And to allow the rebreather to be flown manually should the controller fail Easy and reliable electronics no useless high tech gimmicks and no auto pilot effect The diver has to be the only one in control of the rebreather and not the other way around Have sound scientific test data to backup the performance claims Always search for new ways to improve it 2010 JJ CCR Version 1 00 Revision 03 5 JJ CCR Rebreather 3 JJ CCR Overview 3 1 JJ CCR Features Very robust outer aluminium canister able to support up to 4 tanks 2 12 liter attached with a standard cam band User packable scrubber axial is standard and a radial is optionally available Heavy duty technical stand or lightweight travel stand as option Front or back mounted counter lungs Redundant power sources
38. that all stops should be honored It seems intuitive that if you have bubbles and you stop you give the bubbles an opportunity to be reabsorbed If you continuously ascend the ambient pressure is continuously reduced which prevents bubbles from shrinking Due to this belief the controller will give one Missed Deco Stop message during the dive and one after the dive and will flash the stop depth as long as you are above the stop depth It will use the increased gradient though and your calculated off gassing will be faster than staying at the stops The final option is to display the actual supersaturation gradient for a pure Buehlmann 99 99 profile The selection is GF99 With this setting as long as the NDL time is 0 you have a decompression ceiling the gradient will be displayed instead of the NDL The number shown is the percentage of supersaturation The number is calculated by reference to the Ambient Pressure Line and the M Value line It can be thought of as the current GF but it is different in a couple of ways First the current GF generates stops rounded to the nearest 10 feet or 3 meters So a gradient of 40 may reflect a ceiling of 15 feet but the controller will show a rounded up 20 foot stop Also GF draws a line at the beginning of decompression from the deepest stop to the surface The gradient used for stops is based on that line The Buehlmann ceiling is a raw supersaturation ratio This number can be used in severa
39. the gasses available will be open circuit gasses 2010 JJ CCR Version 1 00 Revision 03 35 JJ CCR Rebreather 6 12 Switch OC CC Depending on the current controller setting this selection will show as either Switch CC gt OC or Switch OC gt CC Pressing SELECT will select the displayed mode for decompression calculations When switching to open circuit while diving the most appropriate open circuit gas will become the breathing gas for calculations At this point the diver may want to switch to a different gas but since the diver may have other things to deal with the controller will make a best guess of which gas the diver would choose 6 13 Dive Setup Pressing SELECT will enter the Dive Setup sub menu Edit A3 Edit A4 Edit A5 2010 JJ CCR Version 1 00 Revision 03 36 JJ CCR Rebreather 6 13 1 Low SP Low Setpoint This item allows you to set the low setpoint value It will display the currently selected value Values from 0 4 to 1 5 are allowed Press the Confirm button when Low SP is displayed and the edit SELECT display will be shown It is set at the lowest valid value for setpoint 4 Pressing MENU will increment the setpoint Another press of MENU will increment it again lf SELECT is pushed the currently displayed setpoint will be selected and the display will return to the Low SP menu item If the highest allowable value 1 4
40. ther Please use it after every dive Steps 5 8 are only needed when you are not planning an additional dive on the same day 2010 JJ CCR Version 1 00 Revision 03 58 JJ CCR Rebreather 9 Cleaning You can do either a light or full clean on the JJ CCR The light cleaning is very easy and can be done during the dives if needed The following steps are required for light cleaning 9 1 Light Cleaning Description Remove the breathing hose and rinse it with fresh water Step remove it via the diluent dump valve Remove the scrubber from the lid Let the lid and scrubber dry 9 2 Full Cleaning The full cleaning should be done after every day especially in warmer regions Step siescription Let the lid and scrubber try Remove the counter lung with the breathing hose Spray some disinfectant E g Buddy Clean or something similar into the t pieces Fill the loop Counter lung and breathing hose with BOV with fresh warm water and wait some time 7 Empty the loop and rinse it with fresh warm water The easiest way to do this is removing the breathing hose from the counter lung Let everything dry over the night There are two short hoses on the lid The cleaning of these hoses is not required so frequently It only needs to be done after several weeks Important is just to store the lid the way that the hoses can dry as well If neede
41. to Feet Meter Date Ulock Code 2010 JJ CCR Version 1 00 Revision 03 32 JJ CCR Rebreather 6 7 Menu Reference This chapter explains all menus of the controller 6 8 Turn Off The Turn Off item puts the controller to sleep This menu item will only appear if the water contacts are dry on controllers While sleeping the screen is blank but the tissue contents are maintained for repetitive diving A The Turn Off menu item will not appear during a dive A It will also not appear for 2 minutes after a dive to allow for a continuation dive 6 9 Calibrate This will calibrate the sensor displays to oxygen The JJ CCR rebreather controller has a in built automatic calibration Please set the calibration gas to 100 of oxygen Open the oxygen tank valve Open the mouthpiece CC mode Go to the Calibrate menu Make sure that the calibration gas is 100 oxygen 4 Select Yes by pressing the right button 2010 JJ CCR Version 1 00 Revision 03 33 JJ CCR Rebreather 5 The solenoid will now start to feed oxygen into the loop until the millivolt readings are stable and do not change any more It can take some time be patient 6 The calibration is successfully completed as soon as the controller reverts back to the main display Good sensors should be in the range of about 35 60 mV at sea level in oxygen If any display shows FAIL the calibration has failed bec
42. to replace the bolts with longer ones The following picture shows the handle that can screwed into the top of the tubes The handle will allow you to easy lift the JJ CCR rebreather in any situation Before you mount the handle we have to come back to the tubes on the left and right side The tubes are used to add necessary trim weight Important The JJ CCR rebreather does not change the overall trim whether you add trim weight into the tubes or not The only difference is that you will need less weight on your weight belt There are two options to fill the tubes with additional weight You can first put in a little piece of sponge into the tube and fill it up with lead shot The sponge will prevent the lead shot falling through the hole in the bottom but stills allows water to pass through The second option is to insert the additional trim weight kit The kit contains two weight rods approx 2 3kg per rod which can be inserted into the tubes Here you see how you can screw the handle into the tubes 2010 JJ CCR Version 1 00 Revision 03 9 JJ CCR Rebreather The heavy duty technical stand is mounted to the canister with 4 screws The heavy duty stand prevents the JJ CCR from tipping over and during the dives it can be used as mounting point for your stages 4 2 Hoses and First Stages The next step in assembling the JJ CCR is adding the first stages and hoses During the development of the JJ CCR we took care to
43. witch to Feet Meter Date Time Flip Screen Calibrate O2 Load Upgrade Ulock Code 6 16 1 Auto SP Switch Auto setpoint switch configuration sets up the setpoint switching It can be set up to switch up only down only both or neither Pushing the confirm button will go into the setup for the switch up function This configures the switch up from the low set point to the high setpoint Pushing SELECT will enter the edit mode 2010 JJ CCR Version 1 00 Revision 03 43 JJ CCR Rebreather An asterisk shows which item is being edited On first entry to edit mode the On Off position will be selected Pushing MENU switches it back and forth between On and Off Pushing SELECT moves to the next edit item We are now editing the first digit of the switch depth Pushing SELECT increments the digit Pushing SELECT moves to the second digit Each push on MENU increments the digit 2010 JJ CCR Version 1 00 Revision 03 44 JJ CCR Rebreather SELECT on the last edit position saves the settings and exits the edit function The SP Down item configures the switch from high setpoint to low setpoint You configure it the same way as the Up setting Either switch can be turned on or off independent of the other switch The system limits the allowable setpoint settings Switching up is allowed from 20 999 feet and from 6 999 meters Switching down is allowed from 9 9
44. zero since we are in decompression and the time to surface TTS is 28 minutes The controller works in both metric and imperial for depths and temperatures The depth shows a decimal point when the depth is between 0 and 99 meters It shows no decimal point if the display is set to feet 2010 JJ CCR Version 1 00 Revision 03 31 JJ CCR Rebreather The system is designed to allow easy selection of the common operational functions whilst diving The menu selections are separated into two sets The Operation menu provides easy access to commonly used functions The Setup menu is used to change system settings The system will continue to read the sensors and update the sensor display while you are in the menu system If no buttons are pushed for a few minutes the menu mode will time out Anything that had been previously saved will be retained Anything that was in the middle of editing will be discarded A key characteristic of the menu system is that it is adaptive It uses the information that it knows about its current state to only ask questions or offer menu items that make sense given the current situation For example on the surface the first menu item you will see is Turn Off During a dive the Turn Off menu item doesn t appear The second menu item is Calibrate That item also only shows on the surface The full menu structure is as below EE CEIL Display log Upload log Auto SP Switch Switch
Download Pdf Manuals
Related Search