Scuba Force SF2 ECCR Operation Manual
  1. Manuals
  2. Brands
  3. Scuba Force Manuals
  4. Diving Instrument
  5. SF2 ECCR
  6. Operation manual

Scuba Force SF2 ECCR Operation Manual

Rebreather
Hide thumbs
Table of Contents

Advertisement

Quick Links

SF2 ECCR
OPERATION MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SF2 ECCR and is the answer not in the manual?

Questions and answers

Related Manuals for Scuba Force SF2 ECCR

Summary of Contents for Scuba Force SF2 ECCR

  • Page 1 SF2 ECCR OPERATION MANUAL...

  • Page 2: Table Of Contents

    SF2 ECCR OPERATION M ANUAL Table of Contents Copyright / Warning Safety Preface Chapter 1 – How the SF2 works Chapter 2 – Soda Lime 2.1 Scrubber Duration Time 2.2 Storage 2.3 Influence of temperature on the Soda Lime output 2.4 Influence of exertion on scrubber duration time...
  • Page 3 SF2 ECCR will make diving more comfortable, enjoyable and exciting. The SF2 ECCR is intended for use by certified divers who are trained in the use of rebreather systems or those divers who are under the direct supervision of a qualified instructor.

  • Page 4: Copyright / Warning

    SCUBA FORCE – dive2gether.net Tauchsport GmbH. Please read operating instructions carefully before using your rebreather.

  • Page 5: Safety

    SF2 ECCR OPERATION M ANUAL Safety Important Safety Instruction This rebreather is intended for use by certified scuba divers who have completed a rebreather course, or those who are being trained and supervised by a qualified instructor. WARNING Follow all instructions and adhere to these safety measures.
  • Page 6 SF2 ECCR having a large fan base among sport, wreck and cave divers. Whenever high reliability and special performance is required, the SF2 is used.

  • Page 7: Preface

    (consumed) is added, this can be done manually (described as MCCR) or electronically as with the SF2 ECCR. The SF2 is an ECCR Electronic Closed Circuit Rebreather. The basic principle is actually relatively simple and has been tried and tested for decades.
  • Page 8 SF2 ECCR OPERATION M ANUAL Our body consumes (metabolizes) the oxygen we breathe. This creates carbon dioxide - CO2. We normally release this gas back into the environment when we breathe. But since our breathing circuit is closed, the CO2 also remains in the system.
  • Page 9 SF2 ECCR OPERATION M ANUAL Since we can only breathe in a circuit if the gas has a flexible volume in which to collect it, in our body that flexible volume is the lungs. The SF2 has a "counterlung" in the form of a bellows.
  • Page 10 SF2 ECCR OPERATION M ANUAL SCHEMATIC REPRESENTATION SF2 ECCR Manual Version 19 / 01-2019 II Page 10 of 44...

  • Page 11: Chapter 2 - Soda Lime

    SF2 ECCR OPERATION M ANUAL Chapter 2 - The soda lime The filtering out of the carbon dioxide (CO2) in the rebreather takes place with the help of the soda lime through a chemical reaction. The soda lime reacts with the CO2 in several stages and produces calcium carbonate (lime), water and heat.

  • Page 12: Scrubber Duration Time

    SF2 ECCR OPERATION M ANUAL 2.1 Lime duration time The lime life of a scrubber depends on many different factors. The absorption capacity depends primarily on the type or manufacturer, but storage, filling of the scrubber, immersion conditions, temperature, exertion etc. Many factors have a major influence on the nominal values of soda lime durations determined under standard conditions.

  • Page 13: Influence Of Exertion On Scrubber Duration Time

    SF2 ECCR OPERATION M ANUAL 2.5 Endurance time SF2 Scrubber According to the soda lime manufacturer, 1 kg of soda lime can bind approx. 110- 150 l of CO2. The approximate lime time can now be calculated using the metabolism. The scrubber of the SF2 can hold up to 2.2 kg. The theoretical CO2 absorption capacity is about 330 l CO2.

  • Page 14: Chapter 3 - Oxygen Sensors

    SF2 ECCR OPERATION M ANUAL Chapter 3 - Oxygen Sensors Since the oxygen content in the breathing gas of rebreather systems has to be measured reliably and permanently, oxygen sensors are used for this. To increase the safety and accuracy of the O2 measurement, three oxygen sensors are built into the SF2-CCR.

  • Page 15: Functional Principle And Design Of A Sensor

    SF2 ECCR OPERATION M ANUAL 3.2 Influence of pressure Oxygen sensors usually measure the partial pressure of oxygen and not the percent. The ambient air pressure therefore has a significant influence on the measurement and calibration. At sea level there is an oxygen partial pressure of 0.209 bar. A calibrated oxygen analyzer would show 20.9% accordingly.

  • Page 16: Influence Of Pressure

    SF2 ECCR OPERATION M ANUAL In order to be able to compensate for various pressure fluctuations, a compensating membrane is built into most sensors on the back. This is also necessary to cushion volume fluctuations due to temperature changes. But that means that the compensating membrane is always the same Pressure must be exposed like the sensor membrane.

  • Page 17: Aging Oxygen Sensors

    SF2 ECCR OPERATION M ANUAL 3.4 Aging of oxygen sensors Oxygen sensors begin to age from the point of production. The rapidity of aging, i.e. the course of the chemical reaction and thus the consumption of the anode depends on the surrounding environment Oxygen content and temperature. Usually, the sensor output in air drops by around 5-10% per year.

  • Page 18: Chapter 4 - Sf2 Components

    SF2 ECCR OPERATION M ANUAL Chapter 4 - SF2 single components FRONT VIEW Accessoires: Wing, Backplate, Harness, SPG´s SF2 Components: Loop, Controller, Fischercable BACK VIEW Accessories: Diluent-and Oxygen Cylinder SF2 Components: Lower Carbon Fiber Tube (Counterlung); Upper Carbon Fiber Tube (Scrubber); Head (Electronics...

  • Page 19: Head

    SF2 ECCR OPERATION M ANUAL 4.1 Head 1. Sensor cover – underneath are the oxygen sensors. 2. Sensor cable 3. Exhalation side – with oxygen injection. 4. Inhale side 5. Battery box 6. Solenoid 7. Oxygen supply connection 4.2 Midpart 1.

  • Page 20: Frame And Accessoires

    SF2 ECCR OPERATION M ANUAL 4.3 Frame and accessoires 1. Backmount Frame incl. female pony clamps 2. Manual Add Kit incl. Offboard Gas 3. Hose clamps and oxygen hose 4. Hose clamps and diluent hose 5. Breathing Loop with DSV...

  • Page 21: Chapter 5 - Sf2 Assembly

    SF2 ECCR OPERATION M ANUAL Chapter 5 – Assembling the SF2 The SF2 is delivered pre-assembled. All essential components are already assembled and checked. However, accessories such as bottles, wings, and regulators still have to be fitted and, in some cases, adapted to personal size (harness).
  • Page 22 SF2 ECCR OPERATION M ANUAL 5.2 Attaching the bellow The bellows is fitted on delivery. Nevertheless, it is important to know how it is mounted, as it has to be removed from time to time for cleaning or, in the unlikely event of damage, replaced.

  • Page 23: Scrubber And Carbon Fiber Tube Assembly

    SF2 ECCR OPERATION M ANUAL The pressure relief valve is The bellow washer disc is screwed into the breathing attached to the middle part with bellows. Here, too, hand-tight is the help of the screws. The completely sufficient. The screws are hand-tightened.

  • Page 24: Battrey Solenoid Assembly

    SF2 ECCR OPERATION M ANUAL 5.4 Assembly battery solenoid To insert the battery, the battery compartment must first be opened. To do this, the two Allen screws are unscrewed with a suitable key. The battery that powers the solenoid is a standard 9 volt battery.
  • Page 25 SF2 ECCR OPERATION M ANUAL The oxygen sensors are The sensor holder plate has three simply brought into position holes. These must be positioned correctly so that the screws fit. The sensor cables are The screws are hand- plugged onto the sensors. The tightened.

  • Page 26: Loop Assembly

    SF2 ECCR OPERATION M ANUAL 5.6 Assembly Loop WARNING The loop determines the circuit of the device. Therefore it is especially important to assemble this properly. Incorrect assembly can cause serious accidents 1. Valve holder on exhalation side. The directional membrane is carefully mounted as shown in the middle picture.
  • Page 27 SF2 ECCR OPERATION M ANUAL The breathing hoses have different diameters on the two connectors. The side with the larger diameter goes to the mouthpiece and is fastened with the hose. The connecting pieces of the loop have different diameters to avoid mix- ups.
  • Page 28 SF2 ECCR OPERATION M ANUAL The actual SF2 is now fully assembled - the accessories can now be assembled. Manual Version 19 / 01-2019 II Page 28 of 44...

  • Page 29: Chapter 6 - Assembly Accessories

    SF2 ECCR OPERATION M ANUAL 6.0 Assembly accessories 6.1 Manual Add Kit & Off Board Gas The Manual Add Kit enables the diver to manually control the rebreather in an emergency. The offboard connectors allow external gas to be applied and the rebreather to operate with it.

  • Page 30: Assembly Regulators, Wing & Harness

    SF2 ECCR OPERATION M ANUAL 6.2 Assembly Regulator, Wing & Harness The assembly of the accessories requires a little manual skill and basic knowledge of diving equipment. Don't try this alone. Your SF2 diving instructor is at your side with words and deeds and, in addition to the assembly, will also carry out the individual size adjustment together with you.
  • Page 31 SF2 ECCR OPERATION M ANUAL To simplify assembly, the wing is attached to the carrier with wing nuts. Then the hoses and the pressure gauges are fed forward through the upper slots of the wing. Now the backplate with harness can be mounted on the wing. The hoses are carefully guided through the "bungees"...
  • Page 32 Finally, either the HUD or a Petrel Ext. Is connected to the Fischer socket. There are separate operating instructions for both devices which must also be read carefully. The SF2 ECCR is now ready to dive. Manual Version 19 / 01-2019 II...

  • Page 33: Chapter 7 - Calibration Oxygen Sensors

    SF2 ECCR OPERATION M ANUAL 7.0 Calibrating the oxygen sensors Calibrating the sensors is very important so that the correct oxygen partial pressure of the breathing gas is displayed underwater. In principle, calibration is carried out with pure oxygen and calibration is carried out at least every week or when external circumstances change.
  • Page 34 SF2 ECCR OPERATION M ANUAL Flush the head with oxygen for about 5 seconds and then wait about 10 seconds. Repeat this process 2-3 times until the sensors have stabilized. When the sensors stop swaying in their readings, press lightly Gas flow (0.5-5 l / min) to "Calibrate"...

  • Page 35: Chapter 8 - Predive Saftey Check

    SF2 ECCR OPERATION M ANUAL 8. Predive safety checks The function tests and the processing of the checklists are essential for the smooth functioning of the SF2. Even if the pure assembly is done beforehand, the entire diving device must be checked at the dive site and the checklist must be gone through.

  • Page 36: Positive- And Negative Test

    SF2 ECCR OPERATION M ANUAL 8.2 Positive and negative pressure test Positive test With the help of the overpressure test, the entire system is checked for leaks and the function of the overpressure or outlet valve (OPV) of the counterlung is also tested. To do...

  • Page 37: Assembly Check

    SF2 ECCR OPERATION M ANUAL 8.3 Assembly Check • Check all diving cylinders for the correct content (gas) and control the cylinder pressures. This includes not only the oxygen and diluent bottle, but also the argon bottle and all bailout stages.

  • Page 38: Prejump Check

    SF2 ECCR OPERATION M ANUAL 8.5 Prejump-Check • Check that your equipment is complete (lamps, masks, buoys, etc.) • Open the diving tanks and bailout stages. • Check the inflators (wing and dry suit). • Switch on the controller and the monitor.

  • Page 39: Chapter 9 - After The Dive

    SF2 ECCR OPERATION M ANUAL 9. After the dive The correct procedure for dismantling and subsequent care is important so that you can enjoy the SF2 for a long time and important components are not unnecessarily damaged. Disassembly of the SF2 1.

  • Page 40: Cleaning Of The Sf2

    SF2 ECCR OPERATION M ANUAL 9.2 Cleaning the SF2 If another dive is planned, the SF2 can be reassembled. If the diving day is over, however, the SF2 should be completely dismantled so that the individual components can be cleaned and dried.

  • Page 41: Transport And Storage

    SF2 ECCR OPERATION M ANUAL 9.4 Transport and storage For the transport of the SF2 e.g. In the car, the oxygen and diluent tanks must be removed and transported separately. Otherwise, the tank brackets on the SF2 could be damaged due to vibrations or lever forces while driving.

  • Page 42: Chapter 11 - Attachement

    SF2 ECCR OPERATION M ANUAL 12. Attachment 11.1 Checklist SF2-CCR Checklist ASSEMBLY Check all cylinders for content and pressure (O2, Diluent, Argon, Stages 2. OPV closed, soda lime checked and installed 3. Calibration (if necessary) 4. Loop Test QD-connections 1+2+3 shut, Pony clamps closed, all hoses tight 6.

  • Page 43: Aditional Operation Manuals

    SF2 ECCR OPERATION M ANUAL 12.2 Further operating instructions To use the SF2 safely, it is essential to read the following operating instructions carefully. 1. Shearwater Petrel Dive Can 2. Shearwater Petrel Ext. 3. SF2 ECCR HUD If you do not have these operating instructions, you can find them on our website in the download area.
  • Page 44 SF2 ECCR OPERATION M ANUAL Users should monitor the displays, indicators and alarm systems and react appropriately if the oxygen concentration becomes dangerous. The SF2 requires the monitoring of an LCD display and should therefore only be used in waters with a minimum visibility of at least 30 cm.

Table of Contents