Respirex Simplair User manual

BS\005\D\2017
EN943-1:2002
TYPE 2
EN
Instructions for use of Simplair A.E Suit

2
Contents
Limitations & Warnings ............................................................................. 3
Pre-checking the Air Supplied Suit ............................................................... 3
Maximum Length And Bore Of Medium Pressure Connecting Hose............ 4
Maximum And Minimum Flow In Litres/minute............................................. 4
Minimum Flow Warning Device..................................................................... 5
Fitting Gloves Into The Respirex Locking Cu.............................................. 6
Fitting Gloves Into The Respirex Soft Rubber Cu ....................................... 7
Donning The Full Suit .................................................................................... 7
Removing the wearer from the Full Suit ........................................................ 9
Instructions For Lifting Harness (Tank Suit Only) ........................................ 10
Inspection And Replacement Of Component Parts.................................... 10
Replacing A Silencer ................................................................................... 11
Removing The Air Control Waist Belt From A Suit ...................................... 11
Replacing The Exhalation Valve Diaphragm................................................ 13
Removing A Complete Exhalation Valve Assembly.....................................14
Replacing A Complete Exhalation Valve Assembly..................................... 14
Cleaning ...................................................................................................... 15
Product labelling.......................................................................................... 17
Sizing........................................................................................................... 18
EC DECLARATION OF CONFORMITY........................................................ 19

3
General Information
You have purchased a Respirex Simplair air supplied suit. This equipment is for use within certain
contaminated environments only. You must carefully read and follow these operating instructions closely.
The Respirex Simplair range of protective clothing is designed for use with breathable air supplied from an
external compressed air source providing positive pressure. The air owing into the garment must conform to
EN 12021: 2014 Annex A.
Respirex Simplair Suits are supplied in a range of sizes, styles and materials. All Respiratory Protective
Clothing is CE marked to indicate compliance with European Regulation 2016/425 on personal protective
equipment (PPE). The suit has been tested in accordance with the technical specication EN943-1:2002 TYPE
2 “Non- Gas Tight”, which species the performance requirements both for the materials of construction of the
suit and for the suit as a whole. For further information on the performance results of each specic material refer to
the data sheet supplied with the suit.
Limitations & Warnings 
Worn in conjunction with suitable gloves and safety boots the Respirex Simplair air supplied suit will meet the
performance requirements of the technical specication to satisfy Annex II of the PPE Regulation (EU) 2016/425.
At high work rates the pressure in the garment may become negative at peak inhalation ow or during bending
or squatting.
Adequate protection may not be provided by the garment in atmospheres that are immediately dangerous to
life or health.
The garment must NOT be used with oxygen only or oxygen enriched air.
Care must be taken to ensure that the garment is being used from the correct length and bore of air supply
hose, as a low airow may cause a less ecient protection.
The equipment is designed to work on a range of air line pressures. The suit is pre-set by Respirex to operate at the
customer’s specic air line pressure (the maximum air line pressure that the suit can be set to is 8.27 bar [120 PSI]).
Unless otherwise stated by Respirex the material fabric of the garment does not breathe. Your body temperature
will rise when working in the garment therefore you are advised to leave the work area in the event you feel too
much body uid has been lost.
The garment must only be used in the hazardous area for which it is intended. Always follow the instructions
carefully otherwise the protection oered by the garment may be drastically aected.
Always use compatible PPE, e.g. gloves and safety boots advised by Respirex.
For any enquiries please contact the Respirex customer services department on Tel : [phone],
Fax : [phone] or
Email: [e-mail]
Pre-checking the Air Supplied Suit
Under the Control of Substances Hazardous to Health (COSHH) regulations 2002 and the Personal Protective
Equipment at work regulations 1992, a thorough examination of respiratory protection equipment (RPE) is
required to be undertaken in a clean area at least once per month if the garment has not been used. When
in use Respirex recommend that the RPE is always checked before the start of each shift cycle. These
inspections are required to ensure that the RPE will perform as intended and is free from defects.
Each inspection must be recorded and the following noted : date, serial number, name of examiner, condition
of the equipment and details of any defect found. The inspection records will be kept by relevant Health &
Safety departments for a period of at least ve years.
1. Visually inspect the suit for any damage that may impair the correct working of the garment together with
the gloves.
2. Check that the gloves are correctly tted (see page 6).
3. Check correct airow in the suit. The suit will be marked with its working pressure which must
correspond to the factory airline pressure as indicated by the pressure gauge at your airline supply outlet
point. Ensure that the silencer is clean and free of any contamination from the airline. The silencer
must be replaced if it is contaminated to any extent.

4
4. The suit is free from contamination both inside and out.
5. The identication number is clearly legible in the suit.
6. The zip operates correctly and the pull tag(s) is in good condition.
7. The suit materials are free from tears and holes, including the head of the garment. Pay particular
attention to the seam areas
8. Ensure that the waist belt air attachment is secure and not damaged.
9. A clean silencer is tted.
10. The vision from the visor is not obstructed by large scratches and heavy scu marks. On suits tted with
rigid visors a removable outer visor can be tted which prevents damage to the main visor. This can be
changed by simply peeling away from the Velcro fasteners and replaced with a new outer visor.
11. Respirex recommend that the exhalation valves are part of the visual precheck. If the valve diaphragm is
distorted or damaged in any way it must be replaced (see page 13).
Inspection of the compressed air supply tube (medium pressure connecting hose) which supplies breathing
quality air to the operator must be carried out at least once per month and before each shift cycle and the
results recorded.
During the inspection the following should be checked:
1. Lines are clean externally.
2. Lines are free from damage (holes, splits, etc).
3. Air line coupling connections are in good condition and the non-return valves are in good working order.
Submerge in water to locate any leaks if any sign of external damage is evident.
Report any defects to the supervisor and record them. The compressed air supply tube must NOT be used
until the defect has been rectied.
Maximum Length And Bore Of Medium Pressure Connecting Hose
Respirex recommend a minimum of 3/8” internal diameter bore hose is used approved to EN 270:1994. If other
Medium Pressure Hose and couplings are to be used they should be suitable for the intended use and conform
to the requirements of EN 270:1994 (a sample must be supplied to Respirex to enable the correct air settings
to be achieved).
The garment will be set by Respirex to give the correct rate of airow to coincide with the customer’s supplied
airline pressure, as notied to Respirex and indicated on the airline waist belt label. The user shall assure
himself that the pressure range of the air supply to the apparatus is within the limits recommended by Respirex.
Maximum And Minimum Flow In Litres/minute
The airow to the suit must be within the range:
Maximum 440 L/Min
Minimum 360 L/Min
This must be checked prior to each use by means of the Respirex airow meter. (See page 5).

5
Checking The Air Flow In The Suit
Fig.1
1. Open the suit at the zip fully to allow access to the air system.
2. Unscrew the connecting collar from the bulkhead adaptor.
3. With the Respirex ow meter on at a level surface, screw the tube connector from the ow meter onto
the bulkhead adaptor.
4. Connect the garment onto the air supply and measure the airow on the meter. See page 4 for correct
ow rates.
5. Disconnect the ow meter and reconnect the air system.
Should you be unable to achieve the air ows indicated, then the silencer should be replaced.
Note : Respirex recommend customers set up their own silencer replacement programme. This will be
determined by the quality of the air and the frequency of use of the garment.
Minimum Flow Warning Device
1. With the Respirex ow meter connected to the air system turn the air pressure down to obtain the
minimum air ow into the garment.
2. When the minimum air ow is reached the warning device will sound a high pitch whistle.
3. After checking the minimum ow warning device, set the air pressure back to the correct working pressure.
FLOW METER
SILENCER
MINIMUM FLOW
WARNING DEVICE
CONNECT TO AIR SUPPLY
SCREW TUBE CONNECTOR
ONTO AIR MANIFOLD

6
Fitting Gloves Into The Respirex Locking Cu
1. Firstly turn the sleeve of the garment inside out.
2. Carefully push the tapered cone into the glove so that the glove stretches over the cone (see Figs 2 & 3).
Fig. 2 Fig. 3
3. Push the glove and cone into the cu body with the little nger of the glove in-line with the seam of the
sleeve (see Fig 4).
4. Make sure that the glove and cone are pushed into the cu body with equal pressure all around its
circumference (see Fig 5).
Fig.4 Fig.5
5. Locate the locking ring over the gauntlet of the glove and screw into the cu body (see Fig 6). If
necessary the gauntlet of the glove can be cut down if it is too long and interferes with the locking ring.
Fig.6 Fig.7
6. Turn the sleeve the correct way out by pulling on the glove (see Fig 7).
Check that there are no creases in the glove around the cu seal. If there are any creases or the glove is
pinched in any way it should be removed and re-tted. If the cu and glove have been assembled as described
there should now be a gas tight wrist seal.

7
Fitting Gloves Into The Respirex Soft Rubber Cu
Follow the procedure as described for tting gloves into the Respirex locking cu up to and including stage 5.
Carefully turn the sleeve the correct way out and make sure that the glove and cone are pushed through the
moulded rubber cu equally all around it’s circumference (see Fig 8).
Fig.8
Donning The Full Suit
It is strongly recommended that before anybody attempts to wear or use an air supplied garment, full training is
given on wearing and decontamination by a competent person, and the details of the training be recorded.
1. Open the zip fully. For single slide zips pull 61cms (24”) at a time keeping the zip straight with one hand
as you pull the slider with the other. Repeat this exercise for the whole length of the zip. For double slide
zips keep the zip completely straight with one hand as you pull the split ring tted to the slider with the
other and open fully from the centre without jarring or snagging.
Fig. 9 Fig. 10 Fig.11
2. Step into the suit with your feet through the elastic stirrups, see Fig 9.
3. Roll the outer leg up approximately 20 - 23cms (8”-9”).
4. Step into your protective safety boots, see Fig 10.
5. Roll down the outer leg over the exterior of the boots, see Fig 11.

8
Exactly the same procedure should be utilised when wearing suits with elasticated inner legs or integral
feet, see Figs 12 & 13.
Donning The Full Suit
It is strongly recommended that before anybody attempts to wear or use an air
supplied garment, full training is given on wearing and decontamination by a
competent person, and the details of the training be recorded.
1. Open the zip fully. For single slide zips pull 61cms (24") at a time keeping
the zip straight with one hand as you pull the slider with the other. Repeat this
exercise for the whole length of the zip. For double slide zips keep the zip
completely straight with one hand as you pull the split ring fitted to the slider with
the other and open fully from the centre without jarring or snagging.
2. Step into the suit with your feet through the elastic stirrups, see Fig 9.
3. Roll the outer leg up approximately 20 - 23cms (8"-9").
4. Step into your protective safety boots, see Fig 10.
5. Roll down the outer leg over the exterior of the boots, see Fig 11.
Exactly the same procedure should be utilised when wearing suits with elasticated
inner legs or integral feet, see Figs 12 & 13.
7
Fig.9 Fig.10 Fig.11
Fig.12 Fig.13
Donning The Full Suit
It is strongly recommended that before anybody attempts to wear or use an air
supplied garment, full training is given on wearing and decontamination by a
competent person, and the details of the training be recorded.
1. Open the zip fully. For single slide zips pull 61cms (24") at a time keeping
the zip straight with one hand as you pull the slider with the other. Repeat this
exercise for the whole length of the zip. For double slide zips keep the zip
completely straight with one hand as you pull the split ring fitted to the slider with
the other and open fully from the centre without jarring or snagging.
2. Step into the suit with your feet through the elastic stirrups, see Fig 9.
3. Roll the outer leg up approximately 20 - 23cms (8"-9").
4. Step into your protective safety boots, see Fig 10.
5. Roll down the outer leg over the exterior of the boots, see Fig 11.
Exactly the same procedure should be utilised when wearing suits with elasticated
inner legs or integral feet, see Figs 12 & 13.
7
Fig.9 Fig.10 Fig.11
Fig.12 Fig.13
Fig. 12 Fig. 13
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten rmly, see Fig 14 for front entry
suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side entry suits.
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
Fig. 14 Fig. 15 Fig. 16 Fig. 17
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the centre), see Figs 18, 19 & 20.
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
6. Lift the suit to the waist. Arrange the waist belt comfortably and fasten firmly, see
Fig 14 for front entry suits and Fig 15 for side entry suits.
7. Connect the suit to the medium pressure airline.
8. Insert your arms into the sleeves, see Fig 16 for front entry suits and Fig 17 for side
entry suits.
9. Pull the hood over your head.
10. Close the zip fully as described in step 1 (double-slide zips should meet in the
centre), see Figs 18, 19 & 20.
8
Fig.14 Fig.15 Fig.16 Fig.17
Fig.18
Fig.19
Fig.20
Fig. 18
Fig. 19
Fig. 20

9
The suit should appear as in Figs 21 & 22.
The suit should appear as in Figs 21 & 22.
Removing the wearer from the Full Suit
1. Carefully open the zip following the procedure in step 1 on page 7.
2. Disconnect the suit from the medium pressure airline.
3. Remove your arms from the sleeves.
4. Pull the hood back over your head.
5. Lower the suit to the waist and unfasten the waist belt.
6. Roll the outer leg up approximately 20 - 23cms (8"-9").
7. Step out of the suit.
After use decontaminate according to your company procedures.
If a gas tight or liquid tight zip has been fitted it should be lubricated using Max. Wax
once the suit has been decontaminated and cleaned.
9
Fig.21 Fig.22
The suit should appear as in Figs 21 & 22.
Removing the wearer from the Full Suit
1. Carefully open the zip following the procedure in step 1 on page 7.
2. Disconnect the suit from the medium pressure airline.
3. Remove your arms from the sleeves.
4. Pull the hood back over your head.
5. Lower the suit to the waist and unfasten the waist belt.
6. Roll the outer leg up approximately 20 - 23cms (8"-9").
7. Step out of the suit.
After use decontaminate according to your company procedures.
If a gas tight or liquid tight zip has been fitted it should be lubricated using Max. Wax
once the suit has been decontaminated and cleaned.
9
Fig.21 Fig.22
Fig. 21 Fig. 22
Removing the wearer from the Full Suit
1. Carefully open the zip following the procedure in step 1 on page 7.
2. Disconnect the suit from the medium pressure airline.
3. Remove your arms from the sleeves.
4. Pull the hood back over your head.
5. Lower the suit to the waist and unfasten the waist belt.
6. Roll the outer leg up approximately 20 - 23cms (8”-9”).
7. Step out of the suit.
After use decontaminate according to your company procedures.
If a gas tight or liquid tight zip has been tted it should be lubricated using Max. Wax once the suit has been
decontaminated and cleaned.

10
Instructions For Lifting Harness (Tank Suit Only)
WARNING : The facility must only be used in conjunction with a back ‘D’ ring xing full body harness approved
to EN 361 : 1992. Always follow closely the manufacturer’s recommendations for use, inspection and cleaning
of safety belts and harnesses. This facility is designed for positioning purposes only, i.e. lowering into and
out of tanks or vessels. It should NEVER be worn as a means of arresting falls. Respirex cannot guarantee
the integrity of any suit used in such circumstances.
1. Don the body harness according to manufacturer’s instructions
ensuring that the back ‘D’ ring lifting point is between the wearer’s
shoulder blades. See Fig 23.
2. Don the Simplair Tanksuit as outlined on pages 7&8 as far as stage 8.
3. Pull the lifting harness trunk of the Simplair Tanksuit inside out and
down towards the lifting point of the full body harness. Unscrew the
locking nut of the ‘quick-link’ and connect to the ‘D’ ring on the full
body harness. Screw the locking nut on the ‘quick-link’ to the fully
locked position. See Fig 24.
4. Complete the donning procedure for the Simplair Tanksuit as
described on page 8.
5. Connect the line from the lifting system to the ‘quick-link’ on the
exterior of the Simplair Tanksuit. Ensure that the locking nut on the
‘quick-link’ is screwed to the fully locked position.
NOTE : When a Simplair suit is being worn in conjunction with a lifting
harness, the trunk at the rear of the hood must concertina at towards
the wearer’s neck. This is to ensure that when the wearer is lifted the
movement of the harness is taken up by the trunk. This prevents damage
occurring to the suit. See Fig 25.
Inspection And Replacement Of Component Parts
A regular inspection and replacement program should be conducted by employees.
The Respirex air supplied suit and all component parts and assemblies should be inspected for damage or
excessive wear before and after each use to ensure proper functioning. Immediately remove the suit from
service and replace parts or assemblies that show any sign of failure or excessive wear that might reduce the
degree of protection originally provided.
Use only Respirex components and replacement parts.
Instructions For Lifting Harness (Tank Suit Only)
WARNING : The facility must only be used in conjunction with a back ‘D’ ring fixing
full body harness approved to EN 361 : 1992. Always follow closely the
manufacturer’s recommendations for use, inspection and cleaning of safety belts and
harnesses. This facility is designed for positioning purposes only, i.e. lowering
into and out of tanks or vessels. It should NEVER be worn as a means of
arresting falls. Respirex cannot guarantee the integrity of any suit used in such
circumstances.
1. Don the body harness according to manufacturer’s
instructions ensuring that the back ‘D’ ring lifting point is
between the wearer’s shoulder blades. See Fig 23.
2. Don the Simplair Tanksuit as outlined on pages 7&8asfar
as stage 8.
3. Pull the lifting harness trunk of the Simplair Tanksuit inside
out and down towards the lifting point of the full body
harness. Unscrew the locking nut of the ‘quick-link’ and
connect to the ‘D’ ring on the full body harness. Screw the
locking nut on the ‘quick-link’ to the fully locked position.
See Fig 24.
4. Complete the donning procedure for the Simplair Tanksuit
as described on page 8.
5. Connect the line from the lifting system to the ‘quick-link’
on the exterior of the Simplair Tanksuit. Ensure that the
locking nut on the ‘quick-link’ is screwed to the fully locked
position.
NOTE : When a Simplair suit is being worn in conjunction
with a lifting harness, the trunk at the rear of the hood must
concertina flat towards the wearer’s neck. This is to ensure
that when the wearer is lifted the movement of the harness is
taken up by the trunk. This prevents damage occurring to the
suit. See Fig 25.
10
Fig.23
Fig.24
Fig.25
Fig. 23
Instructions For Lifting Harness (Tank Suit Only)
WARNING : The facility must only be used in conjunction with a back ‘D’ ring fixing
full body harness approved to EN 361 : 1992. Always follow closely the
manufacturer’s recommendations for use, inspection and cleaning of safety belts and
harnesses. This facility is designed for positioning purposes only, i.e. lowering
into and out of tanks or vessels. It should NEVER be worn as a means of
arresting falls. Respirex cannot guarantee the integrity of any suit used in such
circumstances.
1. Don the body harness according to manufacturer’s
instructions ensuring that the back ‘D’ ring lifting point is
between the wearer’s shoulder blades. See Fig 23.
2. Don the Simplair Tanksuit as outlined on pages 7&8asfar
as stage 8.
3. Pull the lifting harness trunk of the Simplair Tanksuit inside
out and down towards the lifting point of the full body
harness. Unscrew the locking nut of the ‘quick-link’ and
connect to the ‘D’ ring on the full body harness. Screw the
locking nut on the ‘quick-link’ to the fully locked position.
See Fig 24.
4. Complete the donning procedure for the Simplair Tanksuit
as described on page 8.
5. Connect the line from the lifting system to the ‘quick-link’
on the exterior of the Simplair Tanksuit. Ensure that the
locking nut on the ‘quick-link’ is screwed to the fully locked
position.
NOTE : When a Simplair suit is being worn in conjunction
with a lifting harness, the trunk at the rear of the hood must
concertina flat towards the wearer’s neck. This is to ensure
that when the wearer is lifted the movement of the harness is
taken up by the trunk. This prevents damage occurring to the
suit. See Fig 25.
10
Fig.23
Fig.24
Fig.25
Fig. 24
Instructions For Lifting Harness (Tank Suit Only)
WARNING : The facility must only be used in conjunction with a back ‘D’ ring fixing
full body harness approved to EN 361 : 1992. Always follow closely the
manufacturer’s recommendations for use, inspection and cleaning of safety belts and
harnesses. This facility is designed for positioning purposes only, i.e. lowering
into and out of tanks or vessels. It should NEVER be worn as a means of
arresting falls. Respirex cannot guarantee the integrity of any suit used in such
circumstances.
1. Don the body harness according to manufacturer’s
instructions ensuring that the back ‘D’ ring lifting point is
between the wearer’s shoulder blades. See Fig 23.
2. Don the Simplair Tanksuit as outlined on pages 7&8asfar
as stage 8.
3. Pull the lifting harness trunk of the Simplair Tanksuit inside
out and down towards the lifting point of the full body
harness. Unscrew the locking nut of the ‘quick-link’ and
connect to the ‘D’ ring on the full body harness. Screw the
locking nut on the ‘quick-link’ to the fully locked position.
See Fig 24.
4. Complete the donning procedure for the Simplair Tanksuit
as described on page 8.
5. Connect the line from the lifting system to the ‘quick-link’
on the exterior of the Simplair Tanksuit. Ensure that the
locking nut on the ‘quick-link’ is screwed to the fully locked
position.
NOTE : When a Simplair suit is being worn in conjunction
with a lifting harness, the trunk at the rear of the hood must
concertina flat towards the wearer’s neck. This is to ensure
that when the wearer is lifted the movement of the harness is
taken up by the trunk. This prevents damage occurring to the
suit. See Fig 25.
10
Fig.23
Fig.24
Fig.25
Fig. 25