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Survitec Group Crewsaver Crewfit Twin 275N Service Manual

Lifejacket
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Crewsaver -
Servicing Manual : Crewsaver Crewfit Twin Lifejacket
SERVICE MANUAL
CREWFIT TWIN LIFEJACKET
Survitec House, Lederle Lane, Gosport,
Hants. PO13 0FZ, England.
Tel: +44 (0) 1329 820000 Fax: +44 (0) 1329 236218
email: crewsaver@survitecgroup.com
Web: www.crewsaver.com
Page
Date: April 2014
1
Issue No: 9
of 38

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Summary of Contents for Survitec Group Crewsaver Crewfit Twin 275N

  • Page 1 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket SERVICE MANUAL CREWFIT TWIN LIFEJACKET Survitec House, Lederle Lane, Gosport, Hants. PO13 0FZ, England. Tel: +44 (0) 1329 820000 Fax: +44 (0) 1329 236218 email: crewsaver@survitecgroup.com Web: www.crewsaver.com Page Date: April 2014 Issue No: 9 of 38...
  • Page 2 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Service Bulletins and Amendments Register Description Date Issue 9 Section outlining the scope of the Manual added June 2011 on Index page. Issue 10 Page 4 - change in procedure for accessing April 2014 manuals on the website.
  • Page 3 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Scope This manual covers the servicing of the Crewfit Twin 275N lifejacket without any current derivatives. Index Section 1 Introduction Product Description Data Sheet General Features Donning Instructions Section 2 Service Station Guidelines On Receipt Inspection General Care Servicing Tools...

  • Page 4: Product Description

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Introduction 1.1.1. This Service Manual will be published on the Crewsaver website (www.crewsaver.com). Click on PARTNER AREA/LOGIN at the top of the screen. Personnel who have been trained in the servicing procedures for this lifejacket will be issued with a Username and Password to enable them to access the download section.
  • Page 5 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Data Sheet Crewfit Twin 275N Lifejacket Features: 150N Front Chamber Buoyancy: 150N Rear Chamber Buoyancy: 300N Total Chamber Buoyancy: 275N Buoyancy category: Orange Cover Colour MCA (UK) Approved SOLAS Approved CE Approved Cylinder size Standard Automatic...
  • Page 6 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 1.4.1 General Features - Non-Harness Orange PU Coated Polyester 40mm Black Polyester Back-strap F R O N T Screen print Crewsaver Badge PERSON OF 32 KG OR MORE 40mm Black DOT (UK) Polyester belt APPROVED...
  • Page 7 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 1.4.2 General Features - Harness Orange PU Coated Polyester 50mm Black Nylon Back-strap F R O N T Screen print Crewsaver Badge PERSON OF 32 KG OR MORE 50mm Black DOT (UK) Nylon belt APPROVED...
  • Page 8 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 1.5.1 Donning Instructions - Crewfit Twin Non-Harness Don the lifejacket like a normal jacket The backstrap should then be positioned down the centre of the back. Pull crutch strap (if fitted) through in between legs a n d f a s t e n b u c k l e , tension webbing to fit.
  • Page 9 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 1.5.2 Donning Instructions - Crewfit Twin Harness Don the lifejacket like a normal jacket The shoulder straps should then be positioned down the centre of the back. Pull crutch strap (if fitted) through in between legs and fasten buckle, tension webbing to fit.

  • Page 10: Service Stations

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Service Stations 2.1.1 Service stations shall comply with the following as a minimum; 2.1.1.1 Servicing of Inflatable Lifejackets shall be carried out in a fully enclosed area only. 2.1.1.2 The area shall be well lit and protected from direct sunlight. 2.1.1.3 The temperature and humidity shall be sufficiently controlled to ensure that the servicing of inflatable Lifejackets may be carried out successfully.

  • Page 11: General Care

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section General Care 2.3.1 This automatic jacket should be stowed in accordance with the manufacturers instructions 2.3.1.1 Lifejackets should be stowed in a dry compartment. Avoid high humidity, such as a car boot. 2.3.1.2 Lifejackets should have stowage facilities which are provided with a method to encourage moisture removal.
  • Page 12 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Lifejacket Servicing Tools Fig. 2.4 Table of Tools Required Description Type Crewsaver Servicing Tool Kit A fine screw driver or tool suitable for removing gaskets Boning tool Roller Brushes Scissors good quality trimming shears “Chinagraph”...

  • Page 13: Serial Numbers

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 2 Crewsaver CERTIFICATE NUMBER: LIFEJACKET SERVICING SCHEDULE W/O Number: TYPE CUSTOMER VESSEL LAST SERVICED BY DATE OF LAST SERVICE SERIAL NUMBER/S:   COMMENTS COMMENTS CHAMBER INSPECTION INFLATION MECHANISM GENERAL CONDITION OPERATING MECHANISM CORD MATERIAL...
  • Page 14 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 2 Lifejacket Servicing Tool Kit Calibrated Socket Driver (Tighten Cylinder) UML Mk5 Auto Socket Turned Socket Calibrated Socket Driver (Remove & Replace Locking Nuts UML Mk3 Auto Socket For UML & HR) Calibrated Torque Driver (Schraeder Valve) Page...
  • Page 15 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Unpacking 3.1.1. Starting at the bottom of the outer cover, unpeel the velcro and open up the lifejacket, exposing the operating heads and cylinders. See Fig 3.1. WARNING: Care should be taken not to snag the firing line 3.1.2.
  • Page 16 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 3.1 Unpacking the Lifejacket Fig. 3.1.1 Fig. 3.1.2 F R O N T PERSON OF 32 KG F R O N T OR MORE PERSON DOT (UK) OF 32 KG APPROVED OR MORE DOT (UK)
  • Page 17 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 3.2 Crewsaver Mk5 Operating Head Fig. 3.2.1 Fig. 3.2.2 Unscrew the Automatic firing capsule from the end of each Unscrew the 33 gram cylinders from the automatic operating head. This should only be done after the test operating heads.
  • Page 18 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 3 Fig 3.3 United Moulders Mk3 Operating Head JACKETS FITTED WITH THE Mk3 OPERATING AS ILLUSTRATED ABOVE SHOULD BE RETURNED TO CREWSAVER WHO WILL DETERMINE WHETHER A REPLACEMENT Mk5 OPERATING HEAD CAN BE FITTED. Page Date: April 2014 Issue No: 9...
  • Page 19 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 3.4 Hammar Operating Head Fig. 3.4.1 Fig. 3.4.2 Locking ring Place the lifejacket on a Insert metal key as shown in 2a and turn the key counter-clockwise (2b) smooth, flat surface and wipe off between black locking ring and labelled yellow cap.
  • Page 20 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Cleaning Lifejackets 4.1.1 The current standard cover of the Crewfit Twin is made from a 300d polyester fabric with a polyurethane coating that can be cleaned with care. In the event that contamination is such that the materials are inherently damaged refer to section 7.

  • Page 21: Gas Cylinders

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Outer Cover Inspection 5.1.1 Visually inspect the cover material for wear, abrasion, pulled threads, contamination, cuts and holes. 5.1.2 If necessary the cover may be washed. Refer to Section 4. 5.1.3 Effect repairs if necessary and re-inspect for quality of repaired cover.
  • Page 22 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Light and Battery 5.4.1 Visually inspect the L6 light for signs of damage to: 5.4.1.1. the trip line; ensure that the toggle is securely attached. 5.4.1.2. the cable. 5.4.1.3. the lens and its mounting or housing. 5.4.2 Check expiry date on battery.
  • Page 23 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Mouth Inflation Valves 5.5.1 Visually inspect for damage. 5.5.2 Test in accordance with Section 6. Remedial Action: These items are not repairable refer to Section 9 for replacement Part. Inflation System 5.6.1 Visually inspect the Operation of the Mechanism for: 5.6.1.1 Operation of the Manual override lever.
  • Page 24 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 5.6.3 For Hammar Manual or hydrostatic remove and inspect. For the Hydrostatically operated head ensure that indicator is green, and that the handle has not been pulled, or displaced. See Fig 5.6 below. Fig 5.6 Remedial Action: In the event that the Operating Mechanism fails any of the above inspection procedures, the complete Unit shall be replaced.
  • Page 25 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Inflation Chamber 6.1.1. Air Holding Test. 6.1.1.1 Connect through a suitable Tee piece and adaptor, the oral tube with the oral valve in the open position, to a graduated water manometer (or a similar digital device for measuring back pressure). Note: Hammar inflators must be tested with the Hammar operating head fitted to the inflation chamber.
  • Page 26 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 6.1.1.7. If Lifejacket fails the Air holding test inspect as follows. 6.1.1.7.1 With the lifejacket inflated carefully brush the surface with a weak solution of soap and water or alternatively lower the lifejacket into a tank of water to observe for bubbles. 6.1.1.7.2 Identify and mark the source of leakage.
  • Page 27 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 6.4.3 Crewsaver CSL Water Activated Light. Visually inspect the light for signs of damage to: 5.9.5.1. The switch. 5.9.5.2. the cable. 5.9.5.3. the lens and its mounting or housing. 6.4.4 Check expiry date on battery.

  • Page 28: Outer Cover

    Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Outer Cover 7.1.1 Attaching a patch on to the inside of the outer cover, using a compatible adhesive, may be used to repair cuts and holes in the cover. Cuts which may be repaired in this manner are limited to: 7.1.1.1 No more than 25mm in length in any direction.
  • Page 29 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Inflation System 7.6.1 A Schraeder core is located inside the Valve Stem. 7.6.1.1 Remove and replace using the calibrated torque driver for Schraeder valves set to 0.32 - 0.36 Nm. Refer to Section 9 for the Part No.
  • Page 30 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 7.10 Repair Parameters - Holes in Cover Attaching a patch on to the inside of the cover, using a compatible adhesive, may be performed to repair cuts and holes in the cover. This is the only part of a lifejacket that may be repaired. Cuts and holes that may be repaired in this manner are limited to: No more than 25mm in length in any direction.
  • Page 31 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section 7.11 Repair Parameters - Stitching All repairs to stitching must be carried out by a company deemed fit to perform the repair by Crewsaver prior to the work commencing. Stitching repairs should be performed when the visible inspection as detailed in section 5, Para 5.7 identifies broken or pulled stitches.
  • Page 32 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Assembly 8.1.1 Ensure the whistle is positioned and tied in correctly. 8.1.2 Expel the air from both chambers by inverting the dust cap on the oral tube. DO NOT USE VACUUM PUMPS TO DEFLATE LIFEJACKETS 8.1.3 Assemble the Operating Mechanism to the inflator - to be repeated for each inflation chamber.
  • Page 33 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 8.1 Crewsaver Mk5 Operating Head Fig. 8.2.1 Check that the cylinder sealing gasket in the end of the operating head has been correctly fitted, or replaced if necessary. Fit the 60 gram CO cylinder.
  • Page 34 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 8.1 Crewsaver Mk5 Operating Head Fig. 8.2.5 Check the bottom O-ring seal is in place. Before fitting the operating head onto the manifold, check that the schraeder valve is fitted. If fitting a new schraeder valve use a calibrated torque driver set to 0.32 - 0.36 Nm.
  • Page 35 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 8.2 Hammar Operating Head Fig. 8.2.1 Fig. 8.2.2 Fig. 8.2.3 Green Indicator Water inlet valve Caution: Do Not turn Single center shaft point indicator Check that the indicator is green. Hold the gas cylinder through the Now check the new manual/ Insert new inflator body with gas...
  • Page 36 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 8.3 Crewfit Twin Packing Instructions Fig. 8.3.1 Fig. 8.3.2 Run the zip slider Z round the outside of the inflator legs to X and back to Y to close zip. Fold the Hood A, if fitted, down in a concertina Repeat on the other leg of the inflator.
  • Page 37 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Fig 8.1 Crewfit Twin Packing Instructions Fig. 8.3.5 Fig. 8.3.6 F R O N T PERSON OF 32 KG OR MORE DOT (UK) APPROVED Fold the webbing retainers F and G up over the inflators.
  • Page 38 Crewsaver - Servicing Manual : Crewsaver Crewfit Twin Lifejacket Section Parts List Product Description Part Number 33 gram CO Cylinder 10014 Crewsaver Mk5 Auto Capsule 10012 Crewsaver Mk5 Automatic Head 10205 Auto Head Retaining Clip 10111 Auto Head Sealing Gasket (Top and Bottom) 10373 Auto Head Cylinder Sealing Gasket 10381...