rEvo Rebreathers rEvo III micro FT Use And Maintenance Manual Download Page 1

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Manual rEvo III

MANUFACTURER’S MANUAL

FOR ASSEMBLY, USE AND MAINTENANCE

rEvo III mCCR

(rEvo III standard, mini, micro FT)

(*optional rEvo III hCCR, rMS)

CE version

Version 0.4.en Paul Raymaekers

changes in italic

Summary of Contents for rEvo III micro FT

Page 1: ...nual rEvo III 1 MANUFACTURER S MANUAL FOR ASSEMBLY USE AND MAINTENANCE rEvo III mCCR rEvo III standard mini micro FT optional rEvo III hCCR rMS CE version Version 0 4 en Paul Raymaekers changes in italic ...

Page 2: ...arises correct and regulary maintained skills plus their appropriate application will make the difference between life and death This individual manual does not replace in any way training and does not equip you in any way for rebreather diving If you don t understand this warning or you think it is not necessary to take training then do NOT dive a rebreather and especially not a rEvo The manufact...

Page 3: ...Manual rEvo III 3 left rEvo III standard right rEvo III mini rEvo III micro FT rEvo III mini rEvo III standard ...

Page 4: ... Using the rEvo for the first time 3 1 Mounting the harness and wing 16 3 2 Fitting the O2 cells 16 3 3 Assembly and greasing of the O rings 18 3 4 Filling the scrubbers 18 3 5 Calibration of the oxygen cells 19 3 6 The orifice 20 Chapter 4 Diving with the rEvo 4 1 Considerations prior to each dive 21 4 2 Pre dive checks 21 4 3 Immediate pre dive wearing the rebreather immediately before entering ...

Page 5: ... 5mbar 75 minutes Time until the PPCO2 of the inhaled gas reaches 10mbar 85 minutes Max work rate conditions 75 RMV at 40m depth CO2 production of 3l min during 5 minutes PPO2 limits during correct use minimum 0 5 bar max 1 55 bar Work of breathing at 40m depth 4 Celsius 75 RMV 3liter tidal volume using 2 7kg Sofnolime 797 2 05 J liter in horizontal position and 2 20 in vertical position Work of b...

Page 6: ...alve 4 Absolute pressure oxygen regulator APR 5 Auto diluent valve ADV 6 Orifice one way valve 7 Oxygen cells 8 Inhale lung 9 Exhale lung 10 Exhale scrubber upper canister 11 Inhale scrubber lower canister 12 Mouthpiece 13 HUD s LED indication on mouthpiece 14 Diluent cylinder 15 rEvodreams PPO2 displays 16 Oxygen cylinder ...

Page 7: ...is no computer which decides when oxygen has to be added that is the role of the diver If they do not monitor and adjust the PPO2 regularly this will lead to hypoxia unconsciousness and ultimately death with the optional hCCR electronics the rEvo becomes a fully electronically controlled rebreather Easy to setup easy to transport easy to dive and easy to maintain The rEvo III mCCR has been designe...

Page 8: ...e remains in the mouth of the diver Adjustable hose weights are added to assure a comfortable in water position of the hoses and mouthpiece The HUDs are designed to be attached to the mouthpiece An extra cover goes over the rubber hoses to prevent external damage picture cover protection only mounted on the right hose The connections of the breathing hose are cleary marked so that inhale and exhal...

Page 9: ...n additional air chamber The oxygen cells are located beneath the canister in the inhale lung The flow of the warm gasses in the breathing loop coming from the second canister keep the cells dry An anti collapse hose is mounted in the inhale lung An over pressure valve OPV is mounted on top of the unit on the exhale side The cable entry port is mounted on the inhale lung side 2 3 ADV The auto dilu...

Page 10: ...w height results in a limited total thickness of the rebreather maximum 180 mm at the point where the rebreather is in contact with the back of the diver This design ensures a perfect streamlining of the diver during diving Low internal breathing resistance mounting the scrubbers directly on the lungs in the body of the rEvo results in reducing restrictions in gas flow to a minimum Most non rEvo r...

Page 11: ...ness are threaded through the lower part of the backplate where they can be connected around the diver s waist A rubber protection plate is mounted over the backplates held in place by the straps The construction of the split backplate the rounded upper section combined with the thin stainless steel case and the built in wing afford a perfect fit of the rebreather to the diver s back creating very...

Page 12: ...oncept prevents extra hoses running over the chest and shoulders of the diver The buttons also have an extra strong spring to avoid a stuck open situation after pushing the valve Oxygen addition during diving only needs to be done in short bursts while the diver continues breathing on the loop In this way peaks of PPO2 are avoided picture text alternative extra front mounted injection offboard gas...

Page 13: ...rs A short and a long clamp are supplied with each rEvo 2 9 Stainless steel carrying handle soft weight fixation On top of the rebreather a stainless steel carrying handle is situated which covers the complete width of the rebreather If necessary two people can simultaneously lift the rebreather Also the handle works to protect the hose connectors the inlet ports and the breathing hose The handle ...

Page 14: ...nd should not be adjusted 2 12 Measuring PPO2 with the rEvodream and the HUDs In order to be able to monitor the PPO2 constantly each rEvo is equipped with two rEvodreams Each rEvodream has an LCD display moun ted on the pressure gauge and a HUD The HUD has three LEDs orange green red to indicate the PPO2 value The LCD display is normally used to check and compare the values indicated by the HUD a...

Page 15: ...s shortly to get back in the green only zone by raising the PPO2 slightly The rEvodream on off calibration change settings can completely be operated by gently knocking on the bottom or side of the housing there are no external switches or connections whatsoever This designs guarantees a longer life for the unit and avoids the risk of flooding To operate the rEvodream see separate rEvodream manual...

Page 16: ...e is mounted in parallel in the orifice on the oxygen pressure line which is piloted by the wrist mounted controller When equipped with this option the diver does not longer has to manually maintain himself the preferred set point anymore he must however verify all the times the partial pressure of the oxygen of the gas he is breathing in is in the correct range The full user manual and working ex...

Page 17: ... harness should be fixed closely to the diver s back so that the curve of the backplate follows the fysical forms of the of the back of the diver as much as possible Wrong Correct A minimal WOB can only be guaranteed when fixing the rEvo in a correct way The harness has to be slightly re adjusted after the first dive in confined waters 3 2 Fitting the O2 cells Minimum 3 oxygen cells should be used...

Page 18: ... use and when to replace oxygen cells Minimum 3 oxygen sensors must be used during diving this is the way to start up with a new unit The date of installation is marked on each cell After 6 months a 4th cell is added so both rEvodreams will from that moment display 2 sensors Following process applies unless a sensor has failed before its 6 months of use the oldest cell that is still in the unit is...

Page 19: ...Manual rEvo III 19 The recommended oxygen sensors are R22D rEvo ...

Page 20: ...thing hose connectors can also slightly be greased without removing them when they are not contaminated check for sand or dirt traces first if contaminated remove and clean as above 3 4 Packing the scrubbers Unscrew the handle of the scrubber take out the spring remove the grid and the mesh be sure not to lose any parts Throw away the used scrubber material and remove the remaining dust by slightl...

Page 21: ... tapping there is 5 mm between the top of the grid and the top of the canister The fresh canister is now ready for use if you do the cycling mount it in the lower scrubber cavity of the rebreather for cycling see FAQ on the website If the canister is not to be used immediately we stronlgy advice to put it in a plastic bag or airtight container This will protect the scrubber material from drying ou...

Page 22: ...If the mouthpiece is left closed the pressure in the rebreather will rise and an incorrect calibration will occur the loop would be at more than 1 ata The small flow also indicates that the orifice is not blocked Now the calibration procedure of the rEvodreams can start see the rEvodream manual When the values of the sensors are within the given limits the calibration can be successfully completed...

Page 23: ...ow meter In case of an obstructed orifice the time interval needed to drop down the pressure would be much longer If the flow rate is too high that time interval would be much shorter The orifice can easily be changed it simply unscrews After replacing the orifice you must be careful to always check the flow rate ...

Page 24: ...opening of the red connector and breathe into the mouthpiece no gas should leave your mouth Now use the palm of your hand to block the inhale side black connector and suck no gas should enter your mouth Now close the mouthpiece block the exhale side with your hand and blow into the inhale side black connector no gas should escape from the mouthpiece Block the inhale side and suck at the exhale sid...

Page 25: ...ther immediately before entering the water use the checklist see addendum Put the rEvo on your back take care that all your straps are pulled tight so that the rebreather is positioned as high as possible on your back The rebreather must be fixed firmly on your back so that it does not swing when you make movements from left to right When desirable attach the crotch straps they provide extra stabi...

Page 26: ...through the scrubber Keeping your breath breath holding must be avoided at all times you can not save any gas anyway When the PPO2 drops below the desired value inject oxygen in short bursts while constantly breathing the loop this prevents spikes of high PPO2 in the system Always keep a very close eye on the PPO2 during ascent due to the decrease of pressure the PPO2 will fall because of this it ...

Page 27: ...Pay attention that the rebreather is completely closed including the mouthpiece and rinse the rebreather thoroughly on the outside with fresh water Inflate the wing by half Pay attention to rinse all components the regulators and the inflator buttons It is also adviced to push the manual addition buttons for oxygen and diluent a few times while spraying water on them in order to remove any salt an...

Page 28: ...greasing the O rings depends on how intense the unit has been used and how clean the unit has been kept If it becomes to difficult to mount the cover on the unit or to mount the breathing hoses the O rings must be cleaned checked and when OK greased and mounted again The interval between checking and greasing should nevertheless never be longer then one month Parts which have contact with oxygen A...

Page 29: ...age is 9 bar Complete inspection after 5 years A complete inspection of the whole unit is recommended every 5 years for this the unit has to be sent back to the manufacturer or an authorised rEvo service centre Storage instructions When not used the unit must be stored in a dry atmosphere non freezing if possibly at room temperature but always 50 C as continuous high temperatures will degrade mate...

Page 30: ...ange of PPO2 Empty diluent cylinder empty wing Water in the breathing hose Water in the inhale lung Stuck open manual oxygen addition valve Stuck closed manual oxygen addition valve Stuck open manual diluent addition valve Stuck closed manual diluent addition valve ADV stuck open ADV not working Inflator stuck open Broken wing Cells give different readings 1 cell completely dead 2 cells completely...

Page 31: ...aintain the rEvo according to the manufacturer s guidelines ALWAYS mark the scrubber time ALWAYS position the scrubbers in the same position on the rEvo ALWAYS use oxygen compatible grease to maintain your rEvo NEVER descend too quickly NEVER ascend too quickly NEVER dive with a low battery indication on the rEvodreams NEVER dive a rEvo when the unit is not 100 functional NEVER use outdated absorb...

Page 32: ... a mistake when exchanging filling replacing canisters So 1 take the top canister with the TOP MARKER out of your rebreather 2 unscrew the TOP MARKER from the canister and immediately empty that canister you are now sure you emptied the exhausted canister 3 screw the TOP MARKER on the remaining full canister and either put that canister in the upper position of the unit or if you are finished divi...

Page 33: ...ady compulsory for some time To make this easier we produced a double sided laser engraved checklist one side containing the closed check and the other side the pre jump check Details on the content of the checklist can be downloaded from the website The checklist comes with a bolt snap so it can stay together with your unit ...

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