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M3S Triton Description Handbook

Front rebreather mccr
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D
ESCRIPTION HANDBOOK OF
F
TRITON
RONT REBREATHER
Front rebreather mCCR TRITON
M3S - SAS
Tourves, April 25, 2017
v1.4

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Summary of Contents for M3S Triton

  • Page 1 ESCRIPTION HANDBOOK OF TRITON RONT REBREATHER Front rebreather mCCR TRITON M3S - SAS Tourves, April 25, 2017 v1.4...
  • Page 2 - minor changes in text and figures 25/04/2017 text revision Instruction for fitting, use and maintenance of the front rebreather TRITON This document can be used as Manual of the front rebreather mCCR TRITON to contact us: For any information: www.multi3s.com info@multi3s.com...

  • Page 3: Table Of Contents

    3.3.1 Standard wearing ......3.3.2 The M3S valve .......

  • Page 4: Warnings

    ARNINGS Never use the rebreather without receiving specific equipment training. This manual does not replace any training recognised by M3S. Your knowledge and practical exercices are the best prerequisites to avoidaccidents. Correct maintenance is necessary for the proper operation of the rebreather Pre-dive tests are required before each dive in order to check the proper function- ing of the operation.

  • Page 5: Technical Specifications

    ECHNICAL PECIFICATIONS 2.1 General description 2.1.1 TRITON Overview The TRITON is a front mechanical closed circuit rebreather (mCCR). It can be used as a pure oxygen rebreather or as a mCCR. Figure 2.1 – Triton overview The TRITON is made of: 1.

  • Page 6: Technical Datas

    2.1.3 The elements The kevlar bag All the components of the TRITON are contained inside a Kevlar bag of 35x30x16 cm. One handle is fixed on rear of the bag in order to facilitate the carriage. Snap hooks are fixed on the four corners of the bag in order to ensure a good fixing against the chest of the diver.
  • Page 7 The M3S valve M3S valve is Constant Mass Flow valve. The functioning of the valve is shown on Fig. 2.2. M3S valve is closed M3S valve is opened Figure 2.2 – M3S valve functionning When the diver does not inject, valve is closed as Fig. 2.2a) continuous injection of oxygen is flown by the bypass.

  • Page 8: Use Limits And Performances

    4.3.4. Display TRITON is containing a cell housing with 3 M3S cells. The cells T22D have to be replaced as shown in the section 4.3.1. The TRITON is delivered with a PpO display, a HUD and an alarm activated when the PpO is out of the defined range.
  • Page 9 General limits The TRITON is a mCCR rebreather, it is not designed for auto-working. The rebreather needs the human operation to work properly. The diver must regularly check PpO to be in a right range. The acceptable values for the PpO range are: Table 2.1 –...
  • Page 10 For this reason, it is important the soda to be protected from changing environ- ment. The use of the soda requires a training such as prescribed by the manufacturer. Temperature limitations TRITON is designed for working in temperature range from 4˚C to 34˚C.

  • Page 11: Operating Instructions

    3.1 The setting The setting of the TRITON is the first operation to be done before using it. Generally it is done according to the following steps: Canister filling...

  • Page 12: Canister Filling

    Figure 3.1 – exchange of connection impossible 3.1.1 Canister filling The manufacturer of the TRITON recommends to use the soda SOFNOLIME 797 grade mesh 1.0-2.5 mm. Canister filling must be done in an dry and well ventilated place. Canister filling is made according to the following steps: 1.
  • Page 13 4. Knock lightly all around the outside the canister to compact the soda lime. 5. Fill the soda lime canister once more until you can see clearance of 2-3 mm. 6. Redo the two last steps until the canister is completely full.
  • Page 14 7. Place the second dust filter on the top of the soda lime, and the grid. 8. Screw up the nut. 9. Check there is no empty space in the bottom of the canister.
  • Page 15 10. Check the state and the good positioning of the 2 O-ring at the bottom of the scrubber which are located inside on the white side plate. The Red one (silicone) on the white plate, the black one (EPDM) in the recess of the canister. 11.

  • Page 16: Loop Setting

    14. Lock the cap with the snap ring. 15. Check the leakage and the good operation of the scrubber. This is done by a Positive pressure test and a flow gas test. Positive pressure test: (a) Block the output of the scrubber with one hand (white side). (b) Blow by the input of the scrubber (black side).
  • Page 17 1. Check the breathing hoses : This is made by an Positive pressure test, a negative pressure test, a flow gas test and a mouth piece verification. Positive pressure test: (a) Block the output of the breathing hose with the hand (black side). (b) Blow by the mouth piece.
  • Page 18 flow gas test: (a) Let free the input of the breathing hose (black and white connections). (b) Inhale and blow by the mouth piece. The gas should be able to pass through. Visual checking of the mouth piece (a) Check the state of the mouth piece. (b) Check the fixing of the mouth piece.
  • Page 19 3. Push the female connection of the inhale counterlung (without ring) into the male con- nection of the output of the scrubber (WHITE connection) -> Put the circlip on the secured position. 4. Place the scrubber and the two counterlungs into the kelvar bag. 5.
  • Page 20 8. Screw the retaining ring at the outside of the kevlar bag.
  • Page 21 9. Connect the ADV (then put the circlip in the secured position) 10. Pass the female connection of the counterlungs into there corresponding hole on the top of the kevlar bag 11. Screw the retaining rings outside of the kevlar bag. 12.

  • Page 22: Tanks Checking

    TRITON). Before going into the water, connect the direct system on the ADV. 3.1.5 TRITON setting diagram Figure 3.2 gives a setting diagram of the successive steps for setting the TRITON. This flow chart can be used as a "memorandum".
  • Page 23 Figure 3.2 – TRITON setting diagram...

  • Page 24: The Tests

    3.2 The tests It is necessary to do some pre-dive tests before each dive in order to check the TRITON. They must be done just before going into the water because the TRITON can be damaged during the transport. Three tests are needed before each dive. They must be done in the following order: Positive pressure test is done at first in order to check that o-rings and the connections...

  • Page 25: Negative Pressure Test

    After a few minutes, opening the DSV must generate a characteristic noise due to the es- cape of gas. If these two tests don’t work, that means there are some leaks. Thus, it is necessary to find their origin. The leaks can be due to a bad setting one or more defected o-ring(s) one or more foreign body (Soda grain, little stone, bugs, etc...)

  • Page 26: Cells Test

    The user must connect his mouth to the loop, inspire by the mouth and blow by the nose several time until the counterlung collapse. This may require a thoracic effort to empty the rebreather as much as possible. During the last inspiration, close the DSV. The user has to observe the counterlung and the breathing hoses (The flexible elements) and watch any movement due to the infiltration of...

  • Page 27: Triton Test Flow Diagram

    40mV in pure oxygen environment. 3.2.4 TRITON test flow diagram Figure 3.3 gives a flow diagram of the successive tests needed to check the TRITON before each dive. This flow diagram can be used as a memorandum. with...
  • Page 28 Figure 3.3 – Diagram of test flows to be performed before any dive with the TRITON...

  • Page 29: Adjustment Settings

    fit with the morphology of the user. The possible settings are explained here below. They are the positioning of the TRITON on the diver, the flow of the CMF valve, the sensibility of the ADV and at least but not last: the calibration of the cells (This last test is not linked to the diver’s morphology but is ESSENTIAL for the good operation of the rebreather)

  • Page 30: The Adv

    Time graph from 150b to 100b 3.3.3 the ADV The Triton’s ADV is adjustable. The adjustment of diluent can be done accurately thanks to the spanner adjuster. The intermediate pressure of the diluent regulator must be setted up to 8 to 8.5b for optimum performances of the ADV.

  • Page 31: Fine Calibration

    8. Check that the voltages are bigger than 40mV then valid the calibration 3.3.5 Fine Calibration When calibrating oxygen cells with the entire loop, some bad gaz stay inside the Triton. Calibration is slightly distorted. So you can make a fine calibration, without any tools.
  • Page 32 Figure 3.6 – Fine Calibration You can complete the fine calibration with verifying the outgoing gaz at the mouthpiece. You need to push a cap (1) on the male connection of the loop. Then you analyse the outgoing gaz with an analyser (2). Figure 3.7 –...

  • Page 33: Maintenance Instructions

    (pH 9). Thus, it is im- portant to wash the rebreather completely in order to avoid damage to the TRITON and the user during next dive. It is necessary to take special care of the electronic.

  • Page 34: Storage

    4.2 Storage Between two uses of the TRITON, it must be stored in a dry sunless place with constant temperature. It must also be protected from harmful elements like gasoline, The dust could also be harmful for the rebreather. it can damage o-rings and therefore cre- ate leaks.
  • Page 35 Some components of the TRITON must be less regularly maintained but deeply. Some others can be considered as consumable and have to be changed when necessary (see section 5). The necessary steps to change or maintain different elements of the TRITON are explained below.

  • Page 36: Replacement Of The Oxygen Cells

    Oxygen sensors type are T22D cells from M3S. They are 1 year warranty, 2 years life time. WARNING Cells are parts of wear. M3S recommends their past systematic change 12 in 18...

  • Page 37: Replacement Of The Counterlungs

    4.3.3 Replacement of the counterlungs The counterlungs may be replaced in case of damage. Leaks, Torn... We advise to replace counterlungs every 2 years. 4.3.4 Maintenance of the DSV The DSV must be rinsed with fresh water after each dive. To unset and re-grease the DSV: Open the mouth piece Loosen the SS hose clamp (jubilee clamp) of the breathing hose...
  • Page 38 unscrew the operating lever from inside slide the inside barrel to take it out dry carefully the barrel and the inside of the mouth piece Put a thin film of grease on the outside of the spool, and the inside surface of the DSV bodybarrel Slide the spool into the DSV body paying attention to its position (hole of the operating lever, evacuation hole)

  • Page 39: Maintenance Of The Regulator And The Adv

    For this reason, it is important to disinfect the breathing hose and the counterlungs regularly. This is specially the case if the TRITON change of user. The product used for the disinfection has to be harmless for the equipment and the user.

  • Page 40: Consumables And Optional Accessories

    Scrubber cap (can be used on male connection) HD counterlung (Heavy Duty) Some components of the TRITON are considered as consumable and must be changed regularly in order to ensure the good operation of the rebreather. The table 5.1 gives a list of these items and their storage life time.

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