Aqua Lung MISTRAL FIRST STAGE Service Manual
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Aqua Lung MISTRAL FIRST STAGE Service Manual

Aqua Lung MISTRAL FIRST STAGE Service Manual

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SERVICE MANUAL
MISTRAL
FIRST STAGE
Copyright ©2005 Aqualung France
2005

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  • Page 1 SERVICE MANUAL MISTRAL FIRST STAGE Copyright ©2005 Aqualung France 2005...

  • Page 2: Table Of Contents

    Table 1. Troubleshooting guide................…....10 Table 2. List of tools and service kits..............………...11 Table 3. Recommended cleaners and lubricants..............… 13 Procedure A. Cleaning and lubricating..................14 Table 4. Torque settings.................….......……. 15 Table 5. Checking specifications............…......…..15 Maintenance Notes ………………………………………………..…………………………………..16 Exploded views of Mistral First Stage ..........…......…..17...

  • Page 3: Copyright

    Aqualung France. before starting to disassemble the product. Keep this manual open near to you so that you can refer to it step ©2005 Aqua Lung France. by step. Do not rely on your memory. INTRODUCTION All servicing and repair procedures should be carried...

  • Page 4: Disassembly Procedure

    Mistral First Stage Service Manual Unscrew the hoses from the first stage using the Numbers in brackets indicate the part number of the appropriate spanner. Screw the holding tool 116230 into component shown on the exploded view attached. the HP port and then grip the tool with the vice.
  • Page 5 F I R S T D I V E Disassembling the dry chamber. (For this step refer to exploded view 125900 for the yoke version or 125901 for the DIN version). Turn the body over and using the lug spanner (129198) Unscrew the diaphragm screw (6 for the yoke version or 7 for the DIN version).

  • Page 6: Reassembly Procedure

    Mistral First Stage Service Manual Insert the HP seat (4) (face toward the interior of the body) and fit the spring (5). 10. Remove the O-ring (6) and then the anti-extrusion washer (7), taking care not to damage the spring block seal groove (8).
  • Page 7 F I R S T D I V E Fit the tool (A11000) onto the body. Fit a new diaphragm (15) into the body. Position it well in place by pushing with your finger around its edge. Fit the washer (16) on to the diaphragm and make sure that it is correctly positioned on the diaphragm.

  • Page 8: First Stage Adjustment

    Mistral First Stage Service Manual DIN Version: Fit a new lubricated O-ring (20) and a new lubricated O-ring (31) on the seat screw (30). Nitrox Version: Fit a new lubricated O-ring (30) and a new lubricated O-ring (32) on the seat screw (31).

  • Page 9: Final Assembly

    F I R S T D I V E Turn the screw by increments of 1/8 of a turn and purge the regulator several times, using the second stage, after each Check that the MP is still stable (see Table 5) increment.
  • Page 10 Mistral First Stage Service Manual Table 1. Troubleshooting Guide SYMPTOM POSSIBLE CAUSE TREATMENT 1. The HP seat (4) is worn or damaged. 1. Replace the HP seat 2. The crown (2) is damaged. 2. Replace the crown 3. The O-ring (6) is worn or damaged.
  • Page 11 F I R S T D I V E Table 2. List of tools and service kits US PART NO. DESCRIPTION APPLICATION 116222 MP pressure gauge complete 0/16B Checking medium pressure 111610 Lug spanner 129198 Loosen/tighten diaphragm screw 081247 Titan Conshelf tool A11000 Inserting circlip (12) 111000...
  • Page 12 Mistral First Stage Service Manual Mistral dry chamber socket 122152 Dry chamber Allen key 4mm MP and HP plugs Allen key 8mm MP adjustment, unscrew plug (20) 8mm socket Plug (20) (fits to torque wrench) Allen key 6mm Disassembly of DIN seat...
  • Page 13 F I R S T D I V E Table 3. Recommended cleaners and lubricants LUBRICANT / CLEANER APPLICATION SOURCE Cristo-Lube MCG 111 All O-rings Aqualung, ref. 480025 Attention: Silicone parts do not require lubrication. Do not grease them. Greasing silicone parts can change their molecular construction and cause premature degradation of the material.

  • Page 14: Procedure A. Cleaning And Lubricating

    Mistral First Stage Service Manual Procedure A Cleaning and Lubricating (All Aqualung Regulators) Cleaning brass and stainless steel parts. Pre-clean by soaking in NETALU diluted to 25%. Cleaning in an ultra-sonic bath filled with a mixture of washing-up liquid + hot water. If some resistant deposits remain then fill the ultrasonic bath with white vinegar and repeat.
  • Page 15 F I R S T D I V E Table 4. Torque values N° REFERENCE DESCRIPTION FORCE 125923 Body screw 2.5 m.kg. 124602 Seat (27) 2.5 m.kg. 124605 DIN seat (28) 2.5 m.kg. 124634 Nitrox seat (28) 2.5 m.kg 124631 Nitrox seat screw (31) 2.5 m.kg 124606...

  • Page 16: Maintenance Notes

    Mistral First Stage Service Manual Maintenance Notes.

  • Page 17: Exploded Views Of Mistral First Stage

    F I R S T D I V E Exploded view of Mistral yoke version Regulator - 125900.
  • Page 18 Mistral First Stage Service Manual Exploded view of Mistral DIN version Regulator - 125901.
  • Page 19 F I R S T D I V E Exploded view of Mistral yoke version first stage - 125902.
  • Page 20 Mistral First Stage Service Manual Exploded view of Mistral DIN version first stage - 125903.
  • Page 21 F I R S T D I V E Exploded view of Mistral Nitrox / O2 version - 125907.
  • Page 22 Mistral First Stage Service Manual Exploded view of Mistral Nitrox / O2 version first stage - 125908.
  • Page 23 1ere Avenue – 14 rue – BP 148 06513 CARROS cedex – France 00.33.(0)4.92.08.28.88 FAX 00.33.(0)4.92.08.28.99...

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