October 2020 – Rev C
USER MANUAL
Страница 1: ...October 2020 Rev C USER MANUAL ...
Страница 2: ... this manual has been carefully reviewed and is believed to be accurate however it is subject to change Rebreather technology is constantly and rapidly evolving Please check www diverite com to ensure that you have the latest version of this manual Companies and or product names cited in the manual are trademarks belonging to their respective companies The O2ptima CM is manufactured in the USA by ...
Страница 3: ...will not prevent this from happening It is possible that any part of this unit may fail at any time Because of this it is essential that a separate independent bailout system be taken by the diver on every dive The bailout system must be configured to allow safe termination of the dive and return to the surface in the event of a malfunction at any point during the dive All components of the rebrea...
Страница 4: ...Valve MAV 10 Oxygen Manual Addition Valve MAV 10 Overpressure Dump Valve OPV 10 Scrubber Canister 11 Scrubber End Cap Water Trap 11 Electronics Head 12 Oxygen Sensors 12 Controller 13 Electronics Battery Canisters 13 HUD 14 Regulator Hoses Gauge 14 Cylinders Valve 15 Micropore ExtendAir Cartridge Overview 16 Assembling the O2ptima CM 18 Importance of Checklists 18 Gas Analyzation 18 Installing the...
Страница 5: ...3 Breathing on the Loop 33 Electronic vs Manual Operation 34 Diluent Injection 35 Servicing Maintenance Cleaning 35 Post Dive Procedures Cleaning 35 Oxygen Sensor Care 36 Oxygen Sensor Replacement 38 Battery Replacement 40 Battery Recommendations 41 Storage 41 Annual Service 42 Recommended Care Products 42 Technical Specifications 42 Revisions Changes in Documentation 44 Appendix I Checklists 44 A...
Страница 6: ... and durable package in the smallest profile possible These parameters were originally chosen in order to produce a rebreather ideally suited to underwater cave exploration The unique challenges of the cave environment demanded a unit that was as safe and reliable as possible while maintaining a minimal profile The end result was a rebreather that is not only highly suitable for cave diving but al...
Страница 7: ...erlungs with 6 Liter total loop volume Redundant Shearwater DiveCAN electronics including heads up display HUD and Petrel 2 controller NERD controller optional Dual use scrubber canister design that can be used with Micropore ExtendAir cartridges or packed with loose CO2 absorbent Dive Rite DSV is standard Dual water traps in the counterlungs and scrubber lid Oxygen Regulator and hoses 4 AI or AST...
Страница 8: ...nted dual counterlung design The breathing loop consists of the DSV breathing hoses and hose fittings inhalation and exhalation counterlungs scrubber canister canister end cap and electronics head Gas flows from the diver to the right counterlung through the scrubber canister to the left counterlung back to the diver ...
Страница 9: ...hs have been specifically chosen to provide the best balance of comfort and low work of breathing The hose lengths are some of the shortest in the industry This not only keeps the work of breathing low but also reduces drag and uncomfortable vibrations occasionally encountered with excessive hose lengths when scootering or swimming against strong flow The hoses have threaded fittings attached to t...
Страница 10: ... For dives exceeding 130ft 40m Dive Rite recommends upgrading this fitting to a high flow quick disconnect QC 6 fitting Contact Dive Rite for details An inline shutoff is included to disable the ADV however be aware that this also disables the MAV The shutoff should also be used if the diluent gas supply is disconnected underwater to prevent water from entering the ADV MAV The base of the ADV MAV ...
Страница 11: ...sembly is slightly different depending on which scrubber media is used The wave spring and top plate with screen are not used when using an Extendair cartridge The finger nut is reversible It is used in one direction when packing loose CO2 absorbent and is flipped over when using Extendair cartridges See the How to Pack the Scrubber section for more information on properly seting up the scrubber c...
Страница 12: ...nd must be replaced at regular intervals They are typically replaced during the annual service but may need to be replaced prior to this The sensor labeling includes a Sell by date of 4 months after manufacture and a Do not use after date of 16 months after manufacture Sensors must not be used after this date even if they appear to still be functioning correctly Four sensors are used to provide re...
Страница 13: ...uter bag One canister contains the SOLO SOLenoid and Oxygen electronics board and battery The battery is a standard 9 volt battery that powers the SOLO board as well as the oxygen solenoid The Petrel 2 controller handset has its own internal battery and does not rely on the 9 volt battery The other canister contains the OBOE Oxygen BOard Electronics board and battery The OBOE board controls the HU...
Страница 14: ...ive Rite now offers a controller version of the NERD which allows full set point control without using a separate Petrel 2 controller Contact Dive Rite for more information Regulator Hoses Gauge A Dive Rite first stage with DIN connector and hose assembly is included for the oxygen supply First stage intermediate pressure IP is set to 85 psi for the oxygen regulator The oxygen regulator IP must be...
Страница 15: ...clip to prevent accidental oxygen shutoff Cylinder Valve The base O2ptima CM does not include an oxygen cylinder however they are available Dive Rite recommends an aluminum 13 cf 2L cylinder for on board oxygen use The diver may also choose to sling an oxygen bottle of their choosing separately for off board use The on board cylinder is held in place with two included adjustable cam straps No addi...
Страница 16: ...niform bed of granules This takes time and can cause dusting of the adsorbent All of this leads to variations in duration wasted adsorbent and the potential for caustic cocktail In contrast to a granular system ExtendAir cartridges use channels molded in at the factory that remain constant and controlled by the manufacturing process The user simply places the cartridge into the canister without an...
Страница 17: ...niques such as diffusion screens and flow testing of the breathing loop The result is a system engineered to perform consistently independent of individual loading techniques The combination of Micropore s ExtendAir adsorbent manufacturing process along with the parallel flow cartridge design turns out to be extremely efficient Installing an ExtendAir Cartridge EAC is relatively simple and takes s...
Страница 18: ...der actually contains is to analyze it If the actual percentage of oxygen in the cylinder is different than what is assumed it could lead to an incorrect calibration resulting in a different gas mix in the loop than what is displayed on the HUD and controller This could result in oxygen toxicity or errors in decompression calculations It is highly recommended that both oxygen and diluent cylinders...
Страница 19: ...s lubrication on the scrubber canister ExtendAir cartridge scrubber end cap electronics head bore plug nut and seals and O rings Any damage or contamination can cause a loss of water integrity and flooding of the breathing loop Next remove the ExtendAir cartridge from its packaging and using a permanent marker mark the installation direction on the side and or end of the cartridge If the cartridge...
Страница 20: ...er components Look for any damage dirt debris or excess lubrication on the scrubber canister scrubber end cap electronics head bore plug nut and seals and O rings Any damage or contamination can cause a loss of water integrity and flooding of the breathing loop Dive Rite includes a filter disc that should be used when packing the scrubber with granular absorbent This is to reduce the amount of dus...
Страница 21: ... around the outside of the canister to continue settling and compacting the absorbent If necessary add more absorbent to bring the fill level back to 6mm from the top of the canister Place the top plate with attached screen on top of the canister with the screen side down It should be flush with the inside edge of the canister See Figure 7 If it is not add or remove absorbent and relevel until it ...
Страница 22: ...tighten the nut The nut and spring are not intended to apply pressure to pack the scrubber They are only to ensure an even pressure is held on the top plate after properly packing it The canister is packed correctly if shaking the canister does not result in noise being heard from the absorbent Any movement of the absorbent can lead to channeling and premature CO2 breakthrough If needed remove the...
Страница 23: ...lace Next clean lubricate and install the large sealing O ring See Figure 11 There is a large orange flat seal that is pressed into the water trap It is recommended not to remove this seal unless replacement is necessary as it is difficult to reinstall If the flat seal must be removed reinstall the clean and lightly lubricated seal by pressing into place on opposite sides and then slowly working b...
Страница 24: ...orange electronics head O rings and flat seal are clean and lubricated Dive Rite recommends lubricating these seals with Tribolube 71 grease Confirm that the small orange O ring is in place on the premix tube The O ring should be above the sensor disk To ensure that it is in the right spot lay your fingers on the disk and the O ring should be above your fingers See Figure 15 When the canister is i...
Страница 25: ...of the body aligning the arrows on the head and body See Figure 16 pushing the head into position and then rotating clockwise until the head arrow is aligned with the LOCKED position See Figure 17 Figure 17 Locked Position Figure 11 Installing Electronics Head Figure 105 Premix Tube O ring Position Figure 128 Complete Scrubber ...
Страница 26: ...operly cleaned and lubricated Installing the Scrubber Assembly With the ExtendAir cartridge installed or the scrubber packed the next step is to install the canister onto the bottom of the counterlungs It should be oriented with the electronics head on the diver s left and the endcap on the diver s right See Figure 19 With the canister in place confirm that the fitting O rings are present clean an...
Страница 27: ...21 With the canisters installed connect the HUD and controller to their respective canister cables The cables are color coded Align and push the connectors together then tighten the screw together strain reliefs The excess cable can now be tucked into the pouches on the inside of the counterlung outerbags See Figures 22 23 Installing the Loop Hoses There are two hoses that connect the DSV to the c...
Страница 28: ...sit flat against the valve cage If the mushrooms do not sit flat or appear swollen brittle or damaged in any way they must be replaced before diving Faulty mushroom valves can cause hypercapnia leading to severe injury or death Confirm that the mushrooms are sealing correctly by covering the exhale right side of the DSV with your hand and exhaling gently into the mouthpiece There should be no air ...
Страница 29: ...by pushing the connector firmly into place You may need to twist the lock ring slightly to align the tabs on the ring with the groves in the DSV body With the hose connector fully seated push and turn the lock ring clockwise 1 8 of a turn until the white locking button snaps into the notch on the lock ring Ensure that the lock ring is locked and that the hose cannot be pulled back out Repeat the p...
Страница 30: ...cing up as shown in Figure 28 Route the green hose of the hose assembly through the daisy chain and thread it onto the solenoid fitting See Figure 29 This connection only needs to be hand tight Route the black BC hose through the daisy chain and connect it to the oxygen MAV Then thread the hose from the first stage through the daisy chain and connect it to the Y block as shown in Figure 28 Ensure ...
Страница 31: ...www diverite com October 2020 Lamartek Inc dba Dive Rite 31 Figure 28 Oxygen Hose Routing ...
Страница 32: ...d as needed Begin by disconnecting the counterlungs from the scrubber canister Next insert the supplied calibration caps by pressing them into the fittings on the electronics head and end cap The cap with the mushroom exhaust valve should be inserted into the electronics head fitting and the cap with the BC fitting inserted into the end cap fitting With the oxygen cylinder valve turned off disconn...
Страница 33: ...t Minor amounts of water in the loop can be dealt with by flushing it out of the exhalation counterlung OPV this is a skill you will learn in class however a major flood will not be recoverable during the dive and will require bailing out to an independent open circuit system If you are switching back to the DSV from a different breathing source while underwater you will need to clear the small am...
Страница 34: ...ain the user adjustable PPO2 setpoint When all systems are functioning properly the diver will not have to manually add any gas to maintain a breathable loop It is important to keep in mind that the rebreather is only a machine The controller is taking readings from the oxygen sensors and making determinations based on those readings If the values that the sensors are providing are not accurate th...
Страница 35: ...ptima CM to continue to perform properly it must be cleaned and maintained regularly Rebreathers require more maintenance and cleaning than standard open circuit SCUBA equipment For their own safety a rebreather diver should be committed to spending the time effort and money required to properly maintain the unit Post Dive Procedures and Cleaning There are several things that should be done as soo...
Страница 36: ...ly with fresh warm water Shake excess water off of all the components and then spread them out on a clean towel to dry Hang the loop hoses and counterlungs to dry Allowing components to dry completely is the best defense against the growth of mold and bacteria For reference see the Post Dive Checklist in the Checklists section Oxygen Sensor Care Oxygen sensors are the Achilles heel of all modern r...
Страница 37: ... needed There are different theories about the best replacement schedule for sensors Many divers opt to replace all four sensors at once during the annual service every year An alternative replacement schedule is to replace one sensor every 3 months The sensor that is replaced should either be the oldest of the set or alternatively the one that is the slowest to respond to PPO2 changes This method...
Страница 38: ...See Figure 30 Lift the sensor plate and carefully unplug the sensor to be replaced at the back of the sensor Lift the connector tab to remove do not pull on the wires See Figure 31 The sensors are threaded into the sensor plate Remove the sensor by turning it counterclockwise See Figure 32 Figure 30 Sensor Plate Screw Figure 31 Oxygen Sensor Wiring Harness ...
Страница 39: ...ion on the sensor plate to drip off instead of easily running into the sensors Plug the wiring harness into the sensor verifying the sensor position number on the sensor plate corresponds to the correct wire at the connector block Finally reinstall the sensor plate with the sensor plate screw Once the sensor is installed perform an oxygen flush and calibration See the Oxygen Sensor Calibration sec...
Страница 40: ...ll be displayed on the HUD After turn on the yellow row of LEDs will remain on for 30 seconds to indicate a low battery that should be replaced A high quality alkaline 9V battery will typically provide approximately 50 60 hours of dive time before needing replacement However there is a slight battery drain at all times when the batteries are in place even if the HUD and controller are turned off I...
Страница 41: ...k but are not recommended due to poor performance and short life SOLO Solenoid External Canister 9V Ultralife 9V Lithium1 Duracell Coppertop or equivalent high quality 9V Alkaline1 Rechargeable batteries are NOT recommended OBOE HUD External Canister AA Energizer Ultimate Lithium AA Saft 3 6V LS14500 Duracell Coppertop or equivalent high quality AA 1 5V Alkaline Rechargeable batteries are NOT reco...
Страница 42: ... oxygen sensors along with a rebuild of the DSV and regulators and checks of the electronics to confirm correct operation and up to date firmware This is not a user permitted service It must be performed by an authorized service center Recommended Care Products Use Description Dive Rite DSV Lubrication Aerospace Lubricants Tribolube 71 LP and HP Hose O ring Lubrication Aerospace Lubricants Tribolu...
Страница 43: ...n Sensors Analytical Industries Inc or American Sensor Technologies Inc type R22D sensors X 4 Oxygen Sensor Operational Voltages 8 14 mV in air sea level 40 65 mV in pure oxygen sea level Oxygen PPO2 Setpoint Range 0 5 1 5 PPO2 during dive mode 0 19 PPO2 available in surface mode only Water Traps 2 water traps one located inside the scrubber lid and one inside the exhaust counterlung bladder Elect...
Страница 44: ...out multiple copies to use as their dive log The Survival Checklist is intended for users who are thoroughly familiar with assembling and operating the O2ptima CM and are actively using it It provides a condensed list of the critical checks that must be performed before every dive If multiple dives are performed in a single day this list should be used before every dive The Preflight Checklist is ...
