3729184 (A3-D-P) Page 1/2
Quick-release backplate hose clip
For PSS AirBoss breathing apparatus
Assembly instructions
Quic k-release backplate ho se clipFor PS S AirBoss breathin g appar atus
1 Safety-related information
– Before using this product, carefully read these instructions and those
of any associated products.
– Strictly follow these instructions and the instructions for use of any
associated products. The user must fully understand and strictly
observe the instructions.
– Use the product only for the purposes specified in the intended use
section of this document.
– Do not dispose of these instructions. Ensure that they are retained
and appropriately used by the product user.
– Only trained and competent users are permitted to use this product.
– Comply with all local and national rules and regulations associated
with this product.
– Use only genuine Dräger spare parts and accessories. Otherwise, the
proper functioning of the product may be impaired.
– Do not use a faulty or incomplete product. Do not modify the product.
– Notify Dräger in the event of any component fault or failure.
2 Conventions in this document
2.1 Definitions of alert messages
The following alert messages are used in this document to alert the user
to potential hazards. The definitions of the alert messages are as follows.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, could
result in physical injury. It may also be used to alert against unsafe
practices.
NOTICE
Indicates a situation which, if not avoided, could result in damage to the
product or the environment.
2.2 Typographical conventions
2.3 Trademarks
The following website lists the countries in which the Dräger trademarks
are registered:
www.draeger.com/trademarks.
The trademarks listed are only registered in certain countries and not
necessarily in the country in which this document is published.
3 Description
3.1 Product overview
The PSS AirBoss quick-release backplate hose clip is fitted into a hose
channel in the yoke of a PSS AirBoss breathing apparatus. It is secured
in place with a self-tapping screw. It allows rescue or secondary supply
hoses to be stowed out of the way in normal use but remain accessible
for when they are needed.
Fig. 1 The hose clip and screw
3.2 Intended use
The quick-release backplate hose clip provides an easily accessible
storage location for rescue and secondary supply hoses.
The quick-release backplate hose clip must be fitted to a Dräger PSS
AirBoss breathing apparatus as described in this document. Otherwise,
the functional integrity of the product may be impaired.
3.3 Limitations on use
Hoses for accessories cannot be fitted into a channel in the backplate
that contains a quick-release backplate hose clip.
4 Fitting
4.1 Overview
Prerequisites
– Remove any compressed air cylinders (see the breathing apparatus
instructions for use) or the twin pack (see the breathing apparatus
technical manual).
– Adjustable backplate only: set the breathing apparatus height to
position S (see the breathing apparatus instructions for use).
Work equipment
– Flat screwdriver (3 mm)
– Drill guide
– Vice
– Soft jaws for vice
– Drill
– 4 mm drill bit
– Crosspoint screwdriver
Some components may be omitted from illustrations for clarity.
1. Remove the pneumatic hoses from the breathing apparatus (see
section 4.2).
2. Disconnect the shoulder pads from the yoke (see section 4.3).
3. Remove the yoke from the backplate (see section 4.4).
4. Fit the quick-release backplate hose clip to the yoke (see section 4.5).
5. Fit the yoke to the backplate (see section 4.6).
6. Connect the shoulder pads (see section 4.7).
7. Fit the pneumatic hoses to the backplate (see section 4.8).
Further steps
Carry out a full functional test (see section 4.9).
4.2 Removing the pneumatic hoses
1. Remove the hoses from any hose clips.
After removal it is normal for small indentations to be visible in the
hose where it is retained in the channels and hose clips.
2. Lie the breathing apparatus down with the inside of the backplate
uppermost.
3. Remove the hoses from the channel in the backplate.
Fig. 2 Removing a hose from a channel in the backplate
4.3 Disconnecting the shoulder pads
1. Press the spring button then push and slide a shoulder pad towards
the centre of the backplate
Fig. 3 Disconnecting a shoulder pad
2. Remove the shoulder pad from the backplate.
3. Repeat steps 1. to 2. to remove the other shoulder pad.
4.4 Removing the yoke
Work equipment
– Flat screwdriver (3 mm)
1. Fixed backplate only: remove both locking pegs.
a. Push down on the retaining clip then slide the locking peg over the
clip.
Fig. 4 Removing the locking pegs
2. Set the breathing apparatus height to position L (see the breathing
apparatus instructions for use).
3. Lever the guide arms over the end of the guide stops.
Fig. 5 Levering the guide arms
4. Slide the yoke from the backplate.
Adjustable backplate only: simultaneously press the 2 spring-
loaded buttons while sliding the yoke from the backplate.
Fig. 6 Removing the yoke from the backplate
4.5 Fitting the quick-release backplate hose clip
Work equipment
– Drill guide
– Vice
– Soft jaws for vice
– Drill
– 4 mm drill bit
– Crosspoint screwdriver
1. Identify where the quick-release backplate hose clip is to be fitted to
the yoke.
Fig. 7 Possible fitting locations
CAUTION
Dust and debris from drilling can cause injury to the user.
► Wear suitable eye protection and other appropriate personal
protective equipment.
2. If necessary, drill a hole through the backplate.
– Place the drill guide in the desired location in the yoke.
The ribs and clips in the yoke hold the drill guide in place.
– Secure the yoke in a suitable vice with soft jaws.
Fig. 8 Securing the yoke in a vice
► A triangle is used in alert messages to indicate possible ways of
avoiding the hazard.
An information symbol is used for notes and additional useful
information.
1. Numbered paragraphs indicate that the information is sequential.
– Dashed paragraphs indicate that the information is non-sequen-
tial.
Trademark Trademark owner
PSS Dräger
56029
No Description
1 QR backplate hose clip
2 Self-tapping screw
12
550125491155015
55013550145609056091
3
Quick-release backplate hose clip
For PSS AirBoss breathing apparatus
Assembly instructions
3729184 (A3-D-P) Page 2/2
– Drill a 4 mm hole through the yoke.
Fig. 9 Drilling a hole in the yoke
– Remove the yoke from the vice.
– Remove the drill guide from the yoke.
NOTICE
If the self-tapping screw is not fully screwed into the quick-release
backplate hose clip it can damage the backplate.
► Ensure that the self-tapping screw is fully screwed into the quick-
release backplate hose clip and is located as shown.
3. Fit the quick-release backplate hose clip to the yoke then secure in
place with the self-tapping screw.
Fig. 10 Fitting the quick-release backplate hose clip
4. Tighten the screw hand-tight.
4.6 Fitting the yoke
1. Adjustable backplate only: simultaneously press and hold the 2
spring-loaded buttons.
2. Partly slide the yoke into the backplate.
Fig. 11 Partly sliding the yoke into the backplate
3. Ensure that the rib (Fig. 12, Item 1) of the clip is retained between the
yoke and the backplate.
Fig. 12 Rib retained between the yoke and backplate
4. Slide the yoke all the way into the backplate (position S).
5. Secure the yoke in the backplate.
– Adjustable backplate: release the 2 spring-loaded buttons.
– Fixed backplate: fit the locking pegs.
4.7 Connecting the shoulder pads
1. Align the guide block of a shoulder pad with the slot of the backplate.
2. Pull and slide the shoulder pad from the centre of the backplate into
the guide slot. Continue to pull the should pad until the spring button
latches.
3. Check that the shoulder pad is securely retained.
Fig. 13 Checking the retention of a shoulder pad
4. Repeat steps 1. to 3. to fit the other shoulder pad.
4.8 Fitting the pneumatic hoses
1. Lie the breathing apparatus down with the channels of the backplate
uppermost.
2. Form a curve in the hose then fit the hose into a channel in the
backplate.
– Fit the medium-pressure hose and dual-pressure hoses into the
inner channels in the backplate.
Fig. 14 Fitting hoses into the backplate
– Fit rescue or secondary supply hoses into the QR backplate hose
clips.
Fig. 15 Fitting into the QR backplate hose clip
3. Adjustable backplate only: set the breathing apparatus height to
position L (see the breathing apparatus instructions for use) and
check that:
– The curve in the hose is sufficient to allow full and free travel of
the yoke
– The yoke locks in position
– The hose is not stretched
4. Fit the hose into any hose clips.
4.9 Functional testing
WARNING
Failure of the product to meet any of the standards or parameters
described in the functional tests indicates a system fault.
► Report the fault to trained service personnel or contact Dräger.
► Do not use the product until the fault condition has been rectified.
Prepare the product for use and carry out full functional testing as
detailed in the appropriate instructions for use.
5 Using the modified product
Further instructions for using and caring for the modified product are
contained within the instructions for use supplied with the original
product.
6 Disposal
6.1 General
Dispose of the product in accordance with applicable rules and
regulations in the country of use.
7 Order list
8 Manufacturer and document
information
Manufacturer
Dräger Safety UK Limited
Ullswater Close
Blyth, NE24 4RG
United Kingdom
Tel: +44 1670 352 891
Fax: +44 1670 356 266
www.draeger.com
3729184_en
© Dräger Safety UK Limited
Edition: 1 – 2023-01
Subject to alteration
56097560925501856099
1
561015502156100
Description Quantity Order code
Drill guide 1 372 9788
Quick-release backplate hose clip kit,
containing:
– 10 × quick-release backplate hose
clips
– 10 × self-tapping screws
1 371 7485
/
