Survitec Group Crewsaver Crewfit Twin 275N User manual

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
Page
of 43
1
SERVICE MANUAL
CREWFIT 275N LIFEJACKET
Survitec House, Lederle Lane, Gosport,
Hants. PO13 0FZ, England.
Tel: [phone] Fax: [phone]
email: crewsa[email protected]
Web: www.crewsaver.com
1
R29965

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
Page
of 43
No.
Issue 11
Issue 12
Issue 13
Issue 14
Description
Section outlining the scope of the Manual added on Index
page.
Details of all Automatic Heads, Capsules and Indicator Clips
used.
Information from Bulletin 37 regarding manifold types now
included.
Information from Bulletin 38 regarding checking the Gas
Flange and Inflation Tube on older jackets now included.
Requirement for Servicing personnel to mark Service Labels
with initials and certificate number added to Section 8.1.6.
Details of CSL Light added to Section 5
Page 4 - change in procedure for accessing manuals on the
website.
Section 8.1.3.3 - New procedure for fitting replacement
cylinders to Hammar mechanism.
Section 5.9 and 6.5 - Expired L6 Lights to be replaced by
CSL Lights.
CSL Light added to Parts list.
Reference to the Venturi Vacuum System added (sections
6.1.2, 8.1.2 and Parts list)
Date
June 2011
February 2013
March 2014
April 2016
Service Bulletins and Amendments Register

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
Page
of 43
Index
Section 1
1.1 Introduction
1.2 Product Description
1.3 Data Sheet
1.4 General Features
1.5 Donning Instructions
Section 2
2.1 Service Station Guidelines
2.2 On Receipt Inspection
2.3 General Care
2.4 Servicing Tools
2.5 Lifejacket Servicing Record Sheet
Section 3
3.1 Unpacking the Lifejacket
Section 4
4.1 Cleaning Lifejackets
Section 5
5.1 Inspection
Section 6
6.1 Testing
Section 7
7.1 Repairs
Section 8
8.1 Assembly
Section 9
9.1 Replacement parts
Scope
This manual covers the servicing of the Crewfit 275N lifejacket. The elements contained within
the manual also cover the Voyager 275N lifejacket. Training will have been given in this lifejacket
and if any aspect is critical to its operation this will be shown in this manual.

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
Page
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1.1.1. This Service Manual will be published on the Crewsaver website ( ). Click on PARTNER www.crewsaver.com
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. Each
manual carries an Issue Number and records of issue are logged by Crewsaver to ensure that the service network
maintains correct and up to date servicing information. Emails will be sent regarding any new Issues. Periodically
service bulletins may be issued which will be published on the Crewsaver website ( ). Emails www.crewsaver.com
will also be sent. It is the service station's responsibility to regularly check the website for any new bulletins and to
ensure inclusion within the servicing manual. The service bulletin register at the front of the Manual should be
completed.
1.1.2. The information referenced in each section, follows a standard servicing procedure by which the inspection should
take place.
1.1.3. This servicing manual details information to enable regular maintenance and servicing of the lifejacket to help
prolong the life of the product and ensure it functions correctly.
1.1.4. The manual should be used as a reference document following training in servicing procedures instructed by
Crewsaver approved personnel. The manual also details the equipment and parts needed for correct
maintenance to be performed.
1.1.5. Servicing must be carried out annually at a service station authorised by the manufacturer.
1.1.6. Regular servicing is to be carried out by qualified personnel trained by Crewsaver and holding a valid servicing
certificate. Certificates are valid for a period of 3 years.
1.1 Introduction
1.2 Product Description
1 yr
1.2.1. The Crewfit 275 is a single chamber 275N inflatable lifejacket.
1.2.2. The lifejacket is CE approved to EN 399 -275N Lifejackets.
1.2.3. The lifejacket is easy to don and work in whilst still retaining high in-water performance.
1.2.4. The buoyancy of the jacket is provided by a single chamber with an oral tube to ensure the full buoyancy can
be achieved upon or after inflation.
1.2.5. The high buoyancy of this lifejacket makes it suitable when the user is wearing heavy clothing , an immersion
suit or carrying tools.
1.2.6. This lifejacket is inflated either manually or by automatic firing mechanisms.
1.2.7. This lifejacket comes in two different versions, the waist belt version and integral deck safety harness
version which are both available with either a velcro or zipped cover closure system.
1.2.8 The outer cover is made from a hard wearing material. The colour of the outer cover is normally red or navy
blue.
1.2.9 The Crewfit 275 can also be supplied with a full Fall Arrest Harness.
1.2.10 The Voyager 275 can also be serviced in the manner outlined in this Manual.
1
Section

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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5
1.3 Data Sheet
Features:
Chamber Buoyancy:
Buoyancy Category:
Cover Colour
MCA (UK) Approved
SOLAS Approved
CE Approved
Cylinder size
Standard Automatic
Hammar Automatic
Manual Firing head
Manual Override
Oral inflation tube
Pressure relief valves
Hard wearing cover
Whistle - fitted
Retro-reflective tape
Lifting Becket - fitted
Light - fitted
Spray Hood
Thigh straps - fitted
Fall Arrest Harness
Closure method
Alternative covers
Crewfit 275N Lifejacket
290N
275N
Red or Blue
-
-
X
60g
According
to customer
choice
X
X
N/A
X
X
X
X
Optional
Optional
X
Optional
Velcro or Zip
Fireproof, Heavy Duty
1
Section

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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1
Section
1.4.1 General Features - Non-Harness
Spanish Gold PU Coated Nylon
Solas Approved
Retro Reflective Tape
60g CO
Cylinder
2
USE ONLY
CREWSAVER
60g CO2
Disposable Cylinder
FOLD
UNDER
FOLD
UNDER
20mm Velcro - Hook
20mm Velcro - Loop
Oral Tube
40mm Black Polyester
Retaining Strips
Hammar Operating Head
Plastic Press Studs
40mm Black Polyester
Back Strap
Red PU Coated Polyester
Crewsaver Badge
Solas Approved
Retro Reflective Tape
40mm Black Polyester
Waist Belt
SS-40 Buckle

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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Spanish Gold PU Coated Nylon
Solas Approved
Retro Reflective Tape
60g CO
Cylinder
2
USE ONLY
CREWSAVER
60g CO2
Disposable Cylinder
FOLD
UNDER
FOLD
UNDER
20mm Velcro - Hook
20mm Velcro - Loop
Oral Tube
40mm Black Polyester
Retaining Strips
Mk5 Firing Head
and Capsule
1.4.1 General Features - Harness
50mm Black Nylon
Harness
Red PU Coated Polyester
Crewsaver Badge
50mm Black
Nylon belt
Firing Head
pull toggle Square Link
& 3 Bar Link
D-Ring
Section
1

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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8
CREWFIT
CREWFIT
Don the lifejacket like a normal jacket The backstrap should then be positioned
down the centre of the back.
The lifejacket will inflate
a u t o m a t i c a l l y u p o n
immersion in water. (Pull
lanyards down if manual
inflation is required).
Fasten the interlocking
front buckle as shown.
Adjust the belt length by pulling the
webbing through the side buckle to
achieve a secure fit.
(As shown above).
1 2
3
4 5
1
Section
1.5.1 Donning Instructions - Crewfit 275 Non-Harness

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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Don the lifejacket like a normal jacket The shoulder straps should then be
positioned down the centre of the back.
Fasten the interlocking front
buckle as shown.
1 2
3
CREWFIT
PERSONS OF
32 KG
OR MORE
CREWFIT
PERSONS OF
32 KG
OR MORE
The lifejacket will inflate
a u t o m a t i c a l l y u p o n
immersion in water. (Pull
lanyards down if manual
inflation is required).
Adjust the belt length by pulling the
webbing through the stainless steel
front buckle to achieve a secure fit
and thread through belt tidy. (As
shown above).
5 6
1.5.2 Donning Instructions - Crewfit 275 Harness
Section
1

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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.
2.1.1.4 The area shall be efficiently ventilated but free from draught.
2.1.1.5 Sufficient Tools (including specialist tools) shall be available to ensure Lifejackets may be
disassembled, tested and reassembled in accordance with this Manual. These shall include but not
limited to:
2.1.1.5.1 Manometers and pressure gauges.
2.1.1.5.2 Oil free and dry air supply.
2.1.1.5.3 Scales for weighing Gas Cylinders.
2.1.1.5.4 Crewsaver Service tool kit (See 2.6). This is recommended but similar calibrated devices
may also be used.
2.1.1.6 Stock of materials and components to allow efficient servicing with readily available replacement parts
to ensure a prompt service for the customer.
2.1.1.7 Only personnel trained and certified in accordance with Crewsaver requirements are approved to
carry out Servicing and Maintenance. They must be holders of a valid Certificate issued by
Crewsaver.
2.1.1.8 The service station shall be of an approved standard.
2.1.1.9 Procedures shall be introduced to ensure that service bulletins, Manuals and replacement parts are
obtained from Crewsaver.
2.1.1.10 Subsequent to initial approval and thereafter the service station shall be subject to regular surveillance
by Crewsaver.
2.1.1.11 The service station must comply and have met all QA criteria in the Crewsaver servicing protocol file.
2.2.1 On receipt of the Lifejacket(s), check the state of the packaging before opening and notify the owner
and the company delivering the package of any defects or damage.
2.2.2 On opening the package, check the contents for their general condition and quantity.
2.2.3 Prepare Servicing Record Sheet.
2.2.4 Visually inspect the cover and inflation chamber for damage, abrasion, contamination etc. In
accordance with this manual.
2.2.5 Note repairs or replacements required on the record sheet.
2.2.6 Unless obvious damage is evident test the Lifejacket in accordance with Section 6. If it is considered
that the damage found would cause the Lifejacket to fail the tests then corrective action shall be carried
out prior to testing.
2.2.7 Damaged areas shall only be marked using wax based crayon; Marks shall be with a small circle or
cross. Ballpoint, rollerball or other forms of ink shall not be used. If in doubt refer to Crewsaver for
guidance.
2.2.8 Repairs to outer cover are limited to that detailed in section 7.1.
2.2.9 Repairs to welded components including the inflation chamber are expressly forbidden.
2.1 Service Stations
2.2 On Receipt Inspection
2
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Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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2.3.1 The Lifejacket should be stowed in accordance with the manufacturer’s 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 Automatic Lifejackets should have stowage facilities which are provided with a method to
encourage moisture removal.
2.3.1.3 Lifejackets should be stowed vertically, for example hung on hooks, in order that any trapped
water
or condensation can drain away naturally.
2.3.1.4 Lifejackets should be rinsed in fresh water and dried thoroughly after use.
WARNING
Prior to sponging or washing remove automatic capsules from the firing mechanism. Allow to dry thoroughly
afterwards.
2.3.2 Contaminants such as oil or diesel fuel may be sponged off immediately with clean water and allowed
to dry naturally.
2.3.3 Mud can be removed with a stiff (not wire) brush when dry.
0
2.3.4 The outer cover may be hand washed in good quality mild detergent in cool water (40 C). Rinse well,
drip dry naturally in air.
2.3.5 Sponge the inflation chamber with pure soap solution only. Rinse in clean water immediately, inflate
and allow to dry naturally in air.
WARNING
Do not use proprietary cleaning fluids, thinners, spirits or similar substances.
2.3.6 In cases of severe contamination the unit shall be deemed beyond economic repair and the customer
advised to purchase a replacement lifejacket.
WARNING
Make sure you know how to use and fit this lifejacket before an emergency occurs.
Always try and inflate the lifejacket in the water. If already inflated, cross arms over the chest before jumping.
2.3.7 It is advised that personnel are familiarised with the operation of all lifejackets and lifesaving appliances.
2.3 General Care
2
Section

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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2
Section
2.4 Lifejacket Servicing Tools
2.5 Lifejacket Service Record Sheet
2.5.1. An electronic copy of the sheet is available to aid reproduction (or copy next page).
2.5.2. Each lifejacket serviced should be recorded either individually or as a batch, showing the serial
numbers and the work performed during the service.
2.5.3. The service record sheet should be signed and a copy given to the owner certifying that the
lifejacket has been serviced.
2.5.4. All replacement parts should be noted - recording either the serial numbers of the component or
the expiry date.
2.5.5 The record sheet shown on the next page is a recommended version. Similar record sheets,
including the same information, may also be used.
Fig. 2.4 Table of Tools Required
Crewsaver Servicing Tool Kit
A fine screw driver or tool suitable for removing gaskets
Hammar inflator body bench clamp
Hammar cylinder torque clamp
Loctite 222 Adhesive
Boning tool
Roller
Brushes
Scissors good quality trimming shears
“Chinagraph” pencil
Tailors chalk
Fine point indelible pen
1 off metal calibrated metre stick
Scales to weigh gas cylinders 0-1000gram (+1/-1 grams)
Adaptor/tee piece for testing inflators.
Manometer 0-500Mbar
Timing Device
Thermometer 0-40ºC
Crewsaver Venturi Vacuum System
Clean and dry air supply
1 off ball pein hammer
450mm wide bag sealer (3mm element)
Back pressure test kit
Suitable large surface area for the work to be carried out
1 off FR steel cabinet (adhesive store)
1 off HD industrial sewing machine (e.g. Singer 96K, Juki, Durkopp etc.)
N.B. In case of difficulty contact Crewsaver direct (Not sewing machines, cabinets or tables - these parts may be sourced locally).
Note: Prior consent to carry out any repairs must be pre-approved by Crewsaver. All repairs to stitching must be in accordance with this manual.
Description Type

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
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2
Section 2
LIFEJACKET SERVICING SCHEDULE
SERVICED BY:
CERTIFICATE NUMBER:
VESSEL
W/O Number:
Crewsaver
LAST SERVICED BY DATE OF LAST SERVICE
SERIAL NUMBER/S:
RQ
CHAMBER INSPECTION COMMENTS
GENERAL CONDITION
MATERIAL
WELDS
WEBBINGS
RETRO TAPE
WHISTLE
ORAL TUBES
RELIEF VALVES
MANIFOLDS
Schrader VALVES
CYLINDERS
LIGHT
CYALUME POCKET
BUDDY LINE
RQ
INFLATION MECHANISM COMMENTS
OPERATING MECHANISM
CORD
AUTOMATIC CAPSULE
WASHERS
RETAINING NUT
RETAINING CLIP
TOGGLE
RQ
SPRAY HOOD COMMENTS
FABRIC
ATTACHMENT
VELCRO
REPAIRED ITEMS (COMMENTS)
TYPE
CUSTOMER
RQ
WEBBINGS COMMENTS
WAIST BELT / HARNESS
BACK STRAP
LIFTING BECKET
CROTCH STRAP
BUCKLES
STITCHING
ON
OFF
RELIEF VALVE TEST RESULTS FRONT
CHAMBER
OPEN
CLOSE
REAR
CHAMBER
DATE:
RQ
COVER COMMENTS
MATERIAL
VELCRO
ZIP
PLB POCKETS
PRESSURE TEST RESULTS
FRONT
CHAMBER
REAR
CHAMBER
TIME
TEMP. ON OFF

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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Section
2
2.6 Lifejacket Servicing Tool Kit
Cylinder Torque Strap
UML Mk5 Auto Socket
Manometer
Valve Extraction Tool
Pressure Measuring
Adaptor
Inflation Adaptor
Turned Socket
Calibrated Socket Driver
(Tighten Cylinder)
Calibrated Socket Driver
(Remove & Replace Locking
Nuts For UML & HR)
Calibrated Torque Driver
(Schraeder Valve)

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
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3.1 Unpacking
3.1.1 Starting at the inflation mechanism side of the outer cover, unpeel the velcro or pull the zips apart
(zipped version only), exposing the operating head and cylinder. Care should be taken not to snag the
firing line. See Fig 3.1.
WARNING: All defects should be noted onto the service record sheet.
3.1.2 Remove the operating mechanisms.
3.1.2.1 Following unpacking refer to:
a.) Manual Operation: Fig 3.3 - Halkey Roberts operating head removal.
b.) Automatic Operation: Fig 3.4 - Crewsaver Mk5 Automatic operating head
removal.
c.) Automatic Operation: Fig 3.5 - United Moulders Mk3 Automatic operating head.
d.) Automatic Operation: Fig 3.6 - United Moulders Mk5 Automatic operating head.
3.1.2.1.1 Automatic Only. Unscrew the Automatic Capsule if fitted from the operating
mechanism. Place to one side for testing and reassembly later. See Section 6
for details.
3.1.2.1.2 Carefully remove the inflation cylinder by unscrewing it from the operating
mechanism. Retain for further Inspection. Refer to Section 5.
3.1.2.1.3 Remove Operating Mechanisms (and upper and lower manifold gaskets on
Halkey Roberts operating heads only) by unscrewing the retaining nut on the
top of the inflation mechanism. Retain for further Inspection. Refer to Section 5.
3.1.2.2 If a Hammar operating mechanism is fitted, remove using the special Hammar operating
head “Service Key". See Fig 3.7. Place to one side for further inspection. Refer to
Section 5.
3.1.3. Remove light and battery if fitted and if required. Place to one side for further inspection. Refer to
section 5.
3.1.4. For Cleaning. Refer to Section 4.
3.1.5. Carry out visual inspection. Refer to section 5.
3
Section

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
Date: November 2016
Issue No: 14
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Fig 3.1 Unpacking the Lifejacket
3
Section
Fig. 3.1.1 Fig. 3.1.2
JERK TO
INFLATE
Fig. 3.1.3 Fig. 3.1.4

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
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Fig. 3.3.2Fig. 3.3.1
Unscrew the 60 gram cylinder from the manual firing head. Check
to see if the cylinder has been used.
NOTE: This should be performed by check weighing, if under the
min. weight as displayed on the cylinder body, discard in a safe
manner.
Unscrew the valve retaining nut from the top of
the firing head, using a 9/16 ths socket or
spanner. Check for corrosion, discard if
corroded. Remove the top sealing gasket/
washer and discard. This must be replaced with
a new part upon reassembly.
3
Section
Fig 3.3 Halkey Roberts Operating Head
Fig. 3.3.3
Remove the operating head from the manifold which is welded to
the stole fabric. Remove the bottom gasket / sealing washer and
discard. This must be replaced with a new part upon reassembly.
Please Note: The operating head may not match the images above, but the processes are always the same.

Crewsaver - Servicing Manual: Crewsaver Crewfit 275 Lifejacket
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STANDARD AUTOMATIC LIFEJACKETS
Lifejackets received for servicing may have various automatic heads and capsules fitted.
Below are details of the heads and capsules that may be encountered together with instructions
regarding any necessary replacements.
Mk3 Automatic Head.
Fitted to Lifejackets manufactured before 1997.
This head is obsolete and MUST be replaced but refer to Service Bulletin 23 regarding
replacement.
Crewsaver Mk5 Automatic Head - Yellow.
Fitted to Lifejackets manufactured between 1996 and 2002.
This head is obsolete but is still servicable. If necessary replace with United Moulders Mk5
Auto Head and Capsule - Sales Code 11044.
Uses Crewsaver Mk5i Auto Capsule - Sales Code 10012.
Crewsaver Mk5 Automatic Head - Navy Blue.
Fitted to Lifejackets manufactured from 2002 until early 2012.
This head is obsolete but is still servicable. If necessary replace with United Moulders Mk5
Auto Head and Capsule - Sales Code 11044.
Uses Crewsaver Mk5i Auto Capsule - Sales Code 10012.
United Moulders Mk5 Automatic Head - Black.
Fitted to original batches of CSR 150N, Seacrewsader and House of Hardy Crewfit
Lifejackets. The serial numbers are prefixed with ‘L’.
This head is obsolete but is still servicable. If necessary replace with United Moulders Mk5
Auto Head and Capsule - Sales Code 11044.
Uses United Moulders Mk5i Auto Capsule - Sales Code 10017.
United Moulders Mk5 Automatic Head - Yellow.
Fitted to all current standard automatic Lifejackets. The serial numbers are prefixed with ‘L’.
Sales Code 11044 (Head and Capsule together).
Mk3 Automatic Capsule without shroud.
Fitted to all automatic Lifejackets manufactured up to 2002 (unshrouded version used on
Seafire Solas).
This capsule is obsolete and should be replaced with Crewsaver Mk5i Automatic Capsule -
Sales Code 10012.
Mk3 Automatic Capsule with shroud.
Fitted to all automatic Lifejackets manufactured up to 2002.
This capsule is obsolete and should be replaced with Crewsaver Mk5i Automatic Capsule -
Sales Code 10012.
Crewsaver Mk5 Automatic Capsule - Yellow.
This capsule has been withdrawn and should not be found fitted to any Lifejacket.
If any are found they MUST be replaced with Crewsaver Mk5i Automatic Capsule - Sales
Code 10012.
3
Section

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Crewsaver Mk5 Automatic Capsule - Navy Blue.
Fitted to Lifejackets manufactured from 2002 until early 2009.
This Capsule is obsolete but is servicable up to the date shown on the Capsule.
When necessary replace with Crewsaver Mk5i Automatic Capsule - Sales Code 10012.
Crewsaver Mk5 Automatic Capsule - Navy Blue.
Fitted to Lifejackets manufactured from early 2009 until late 2011.
This Capsule is obsolete but is servicable up to the date shown on the Capsule.
If the Capsule is still in date fit protective cap R17111.
When necessary replace with Crewsaver Mk5i Automatic Capsule - Sales Code 10012.
Crewsaver Mk5i Automatic Capsule - Navy Blue.
Fitted to Lifejackets manufactured from late 2011 to early 2012.
Sales Code 10012
Crewsaver Mk5i Automatic Capsule - Blue.
Identical to the Capsule shown above. The colour has been changed to differentiate it from
the black United Moulders Mk5i Capsule 10017.
Sales Code 10012
United Moulders Mk5 Automatic Capsule - Black.
Fitted to original batches of CSR 150N, Seacrewsader and House of Hardy Crewfit
Lifejackets.
This Capsule is obsolete but is servicable up to the date shown on the Capsule.
When necessary replace with United Moulders Mk5i Automatic Capsule - Sales Code 10017.
United Moulders Mk5 Automatic Capsule - Black.
Fitted to Lifejackets manufactured from late 2010 up to 2012.
This Capsule is obsolete but is servicable up to the date shown on the Capsule.
If the Capsule is still in date fit protective cap R17111.
When necessary replace with United Moulders Mk5i Automatic Capsule - Sales Code 10017.
United Moulders Mk5i Automatic Capsule - Black.
Fitted to all Lifejackets manufactured from 2012 onwards.
Sales Code 10017.
Indicator Clip.
Fitted to all Crewsaver and United Moulders Mk5 Automatic Heads EXCEPT the current
yellow UM Mk5 head (Sales Code 11044).
Sales Code 10111.
Indicator Clip.
Fitted to the current United Moulders Mk5 Automatic Head - Yellow.
Sales Code 11043.
3
Section

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3
Section
Fig. 3.4.3 Fig. 3.4.4
Fig. 3.4.2Fig. 3.4.1
Fig 3.4 Crewsaver Mk5 Operating Head
Remove the operating head from the manifold which is
welded to the inflation chamber fabric. Inspect the
bottom sealing O-ring. This must be replaced with a new
part if damaged.
Unscrew the retaining nut from the top of the
operating head. Check for corrosion and discard if
corroded. Inspect the top sealing O-ring. This must be
replaced with a new part if damaged.
Unscrew the 60 gram cylinder from the automatic
operating head. Once the cylinder has been removed
inspect the cylinder O-Ring seal. Check the seal is in
place and that it is in a good condition. Take the cylinder
and check to see if the cylinder has been used. This
should be performed by check weighing. If under the
minimum weight as displayed on the cylinder body,
discard in a safe manner.
Unscrew the Automatic firing capsule from the end of the
operating head. This should only be done after the test
detailed in Section 6 has been performed in order to test
the old unit, or if the operating head has already been
fired. Discard and replace with a new automatic firing
capsule upon reassembly. The Capsule must be
replaced if it expires before the date of the next annual
service.