Divesoft CCR Liberty Manuale utente

MANUAL

Liberty

LIBERTY USER MANUAL

Date of issue: 30th June 2020; rev. 2.11

CU HW rev. 1.5, HS HW rev. 3.0, FW 2.11

Authors: Adam Procháska, Jakub Šimánek, Aleš Procháska

Published by Liberty systems s.r.o., CCRLiberty.com

LIBERTY MANUAL

Content

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Use of this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Responsibility of the CCR Liberty user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

User support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Depth limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Water temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CO2scrubber duration limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1. Technical design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.1 Basic schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.2 Dive/surface valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2.1 Inhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2.2 Exhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2.3 Mouthpiece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.2.4 Usage with a full face mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.3 Corrugated hoses and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3.1 Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3.2 Attachment to the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3.3 Connection to the breathing bags . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3.4 Attachment of the DSV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.4 Inhalation bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.4.1 Automatic diluent valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.4.2 Manual diluent bypass valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.5 Exhalation bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.5.1 Manual oxygen bypass valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.5.2 Overpressure valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6 Oxygen tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.1 Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.2 Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.6.3 Reduction valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.6.4 Pressure reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.7 Diluent tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.7.1 Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.7.2 Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.7.3 Reduction valve and pressure reading . . . . . . . . . . . . . . . . . . . . . . . 19

1.7.4 Backup regulator (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1.8 CO2scrubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1.9 Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1.9.1 Control units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1.9.2 Direct measurement of ppO2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

1.9.3 Measurement of He content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1.9.4 Helium blind plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1.9.5 Pressure and depth measurement . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.9.6 Temperature measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.9.7 Solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.9.8 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.10 Visual display units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.10.1 Handsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.10.2 Head-up display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.10.3 Buddy display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.11 Backplate and mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

1.12 Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

1.13 Buoyancy compensator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1.14 Ballast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1.15 Weights of individual parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2. Control-unit operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.1 Control elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.1.1 Surface mode inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.1.2 Dive mode inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.1.3 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.2 Switching on the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.2.1 Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.3 Surface mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2.3.1 Entering surface mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2.3.2 Surface mode primary screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2.3.3 Surface mode O2sensors screen . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.3.4 Switching to other modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.3.5 ppO2control in surface mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

2.4 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

2.4.1 Editor use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.4.2 Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.4.3 Mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

2.4.4 Decompression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

2.4.5 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.4.6 Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.4.7 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2.4.8 Faulty sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

2.4.9 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2.5 Dive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2.5.1 Detailed screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2.5.2 Synoptic screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.5.3 Big Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.5.4 Dive profile screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

2.5.5 Sensors screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

2.5.6 TTS Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6 CCR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.1 Entering CCR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.2 Switching to other modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2.6.3 ppO2regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.6.4 Decompression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.6.5 Specific handset control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.7 Manual CCR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.7.1 Entering manual CCR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.7.2 Switching to other modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.7.3 ppO2regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.7.4 Decompression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8 Bailout OC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.1 Entering bailout OC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.2 Switching to other modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.3 Mixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.4 Decompression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.8.5 Specific handset control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.9 Ascent plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.10 Setup in Dive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

2.11 Games . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.11.1 Sokoban . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

2.11.2 Snake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

2.12 List of pop-up alarms and notifications on Liberty CCR . . . . . . . . . . . . . . . . . 64

2.12.1 Critical priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.12.2 High priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.12.3 Medium priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

2.12.4 Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

3. Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.1 Dive plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.1.1 Planner settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.1.2 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

3.2 Dive preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

3.2.1 Replacement of CO2sorbent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

3.2.2 Assembling the rebreather body . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3.2.3 Mounting the rebreather body . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3.2.4 Attaching the counterlungs and hoses . . . . . . . . . . . . . . . . . . . . . . 83

3.2.5 Tank filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

3.2.6 Battery charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3.2.7 Helium sensor calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3.2.8 Calibration of the oxygen sensors . . . . . . . . . . . . . . . . . . . . . . . . . 87

3.2.9 Preparing the bailout apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3.2.10 Setting parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3.2.11 Directional valve check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3.2.12 Physical inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3.3 Pre-dive inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3.3.1 Internal testing of the control units . . . . . . . . . . . . . . . . . . . . . . . . 90

3.3.2 Pressure sensor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

3.3.3 Comparison of oxygen sensors and their calibration . . . . . . . . . . . . . . 91

3.3.4 Helium-sensor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

3.3.5 Battery testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3.3.6 Solenoid testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3.3.7 HUD inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3.3.8 BD inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

3.3.9 Negative pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

3.3.10 Positive pressure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.3.11 Predive checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.3.12 Prebreathe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.4 Diving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.4.1 Breathing high oxygen content gases . . . . . . . . . . . . . . . . . . . . . . . 97

3.4.2 Putting on the apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

3.4.3 Using the DSV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

3.4.4 Monitoring of devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

3.4.5 Switching to CCR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

3.4.6 Water entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

3.4.7 Submersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

3.4.8 In-water check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

3.4.9 Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

3.4.10 Controlling buoyancy and trim . . . . . . . . . . . . . . . . . . . . . . . . . . 102

3.4.11 Mask clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

3.4.12 Increased physical exertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

3.4.13 Ascent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

3.5 Post-dive procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

3.5.1 Immediately after surfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

3.5.2 CO2scrubber maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

3.5.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

3.5.4 Battery care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

3.5.5 Dive log download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

3.5.6 Long-term storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

3.6 Emergency procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.6.1 Emergency ascent (bailout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.6.2 Oxygen-source malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

3.6.3 Diluent-source malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

3.6.4 Scrubber malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

3.6.5 Inadvertent release of the mouthpiece . . . . . . . . . . . . . . . . . . . . . 112

3.6.6 Flooding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

3.6.7 Loss of buoyancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

3.6.8 Rescue on the surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

3.6.9 Malfunction of oxygen-concentration measuring . . . . . . . . . . . . . . . 114

3.7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

3.7.1 Tools and replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

3.7.2 Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

3.7.3 Regular service inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

3.7.4 Long-term maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

3.7.5 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

3.8 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

3.8.1 By car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

3.8.2 By boat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

3.8.3 By plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Liberty User Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Introduction

Use of this manual

This user manual is part of the CCR Liberty documentation.

The CCR Liberty is intended to be used exclusively by a trained person who is capable of fully

understanding the instructions contained in this manual or is in the process of training with

the CCR Liberty in a course accredited by the manufacturer. The training course prerequisites

are set by cooperating agencies.

Responsibility of the CCR Liberty user

Strong emphasis was placed on reliability during the development of the CCR Liberty. Internal

parts are individually separated to minimize the impact that a failure of any given part may

have on the rebreather’s basic functionality. Several systems have multiple backups. The logic

behind the CCR Liberty is that the controls will never prohibit the start of a dive, even if

malfunctions are detected. The system never locks out the diver; instead, the system will

indicate the status of the unit in light of any damage if able to do so. When cave diving, the

inability to submerge can mean not being able to return from a dive; therefore, the CCR Liberty

does not impede submersion.

It is always the user’s responsibility to decide whether he/she switches to a backup apparatus

or chooses to begin a dive with a partially malfunctioning rebreather.

A CCR Liberty user must accept the fact that diving involves risk. Following everything the

user has learned by reading the CCR Liberty’s technical manual and during their training on

the rebreather can only reduce the risk. Diver safety is increased through by regular training,

methodical education, and following good diving practices. Diving with a rebreather requires

a far greater degree of discipline and awareness compared to diving with an open-circuit

apparatus.

If you do not accept this risk and you are not a trained, careful, and disciplined diver, do not dive

with the CCR Liberty.

The manufacturer does not bear any responsibility for the use of the CCR Liberty if the

apparatus has been modified in any way that is not stated in this manual or in the technical

guidelines issued by the manufacturer.

Documentation

Version

The technical documents are subjected to a process of continual development and

improvement. Therefore, please regularly check the website at www.divesoft.com for updates.

This manual provides operating instructions for the hardware and software (firmware) version

of the CCR Liberty written on the tittle page.

Technical guidelines

The manufacturer can issue technical guidelines. It is strongly recommended that the user

regularly checks www.divesoft.com for new guidelines. Registered users will receive

notifications by e-mail.

Document updates

The electronic form of the manual is always available in its complete, updated form.

The electronic and printed forms of the manual may not be completely identical. In case of

insignificant changes (correction of minor typing errors, for example), only the electronic

version is updated.

User support

Registered users are entitled to technical support. The extent of free support can be limited.

The technical support department at Liberty systems s.r.o. will provide limited support for

potential and unregistered users. Prior to submitting a question, please familiarize yourself

with the general principles of trimix rebreather diving and the CCR Liberty technical

documents available for free.

Technical data

Depth limits

The maximum depth for which the CCR Liberty meets the requirements of the Harmonized

Standard EN 14143:2013 is 100 m.

Diluent Max. depth

Air 40 m

tmx 21/35 66 m

tmx 18/45 78 m

tmx (heliox) 10/90 > 78 m

Additional depth limits depend on the diluent used, see 84 Tank filling – Diluent.

All components are subjected to a pressure of 6 MPa (depth 600 m). The depth gauge is

checked and calibrated to a pressure of 3.5 MPa (depth 350 m). EC Type-examination was

performed to a simulated depth of 100 m.

Water temperature limits

The CCR Liberty is intended for use in water temperatures above 4 °C and below 34 °C

according to the requirements of EN 14143:2013 (Article 5.1).

The minimal temperature is determined through CO2scrubber duration tests, which are

performed at 4 °C.

CO2scrubber duration limit

The maximum safe operating period of the sorbent is 168 min, determined by a test in

accordance to EN 14143:2013 (Article 6.6.2). During the test, 1.6 l/min of CO2were added to the

breathing loop with a ventilation rate of 40 l/min and an exhalation temperature of 32±4 °C;

the unit was submerged in 4° C water to a depth of 40 m with a ppCO2of 5mBar.

The sorbent’s actual maximum operating period can differ depending on the sorbent,

temperature, depth, and the diver’s physical effort.

Date of issue: 30. June 2020

CU HW rev. 1.5, HS HW rev. 3.0, FW 2.11

Authors: Adam Procháska, Jakub Šimánek, Aleš Procháska

Published by Liberty systems s.r.o., CCRLiberty.com

Under normal conditions, scrubber duration ranges from 4 h in deep cold water with moderate

work to 6 hours for a minimal working dive. For details see 78 Sorbent service life.

Weight

The total ready-to-dive weight of The CCR Liberty (including scrubber), is approx. 37 kg.

For details see 31 Weights of individual parts.

The recommended service intervals are at 1 year, 3 years and 5 years.

The servicing of the unit can only be performed by authorised service technician or technical

centre.

Not performing services at regular intervals may result in voiding your warranty.

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