Dräger LFB PSS 7000 Manual

Policy | Procedure
Review date: 29 January 2023 Last amended date: 5 May 2020
476 Issue date: 17 November 2006 1 of 80
Respiratory protective equipment –breathing apparatus –
Dräger PSS 7000 –technical information
New policy number:
476
Old instruction number:
TEC:B010:b1
Issue date:
17 November 2006
Reviewed as current:
29 January 2020
Owner:
Assistant Commissioner, Operational Policy
Responsible work team:
RPE and Hazmat PPE
Contents
1Introduction..................................................................................................................3
2Component parts ...........................................................................................................6
3Backplate assembly ........................................................................................................9
4Harness and cylinder strap assembly................................................................................ 10
5Telemetry module........................................................................................................ 11
6Charging BA set from appliance...................................................................................... 11
7FPS 7000 dual purpose face mask ................................................................................... 13
8Lung demand valve (LDV) ............................................................................................. 15
9Pneumatic system ........................................................................................................ 16
10 Second person connection............................................................................................. 17
11 Bodyguard 7000 electronic monitoring unit (EMU)............................................................. 19
12 Bodyguard in use functions............................................................................................ 20
13 Bodyguard electronic monitoring unit self-check................................................................ 22
14 SDBA cylinder............................................................................................................. 23
15 SDBA set –lifting and carrying instructions ....................................................................... 32
16 EDBA cylinder............................................................................................................. 32
17 EDBA set –lifting and carrying instructions ....................................................................... 36

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18 Receipt test and monthly 28 day test................................................................................ 37
19 PSS 7000 ’A’ test.......................................................................................................... 38
20 PSS 7000 ‘B’ test.......................................................................................................... 44
21 Equipment allocation .................................................................................................... 53
22 Defective equipment .................................................................................................... 54
23 RPE maintenance rooms ................................................................................................ 56
24 Technical data ............................................................................................................. 57
Glossary RPE generic ........................................................................................................... 60
Appendix 1 –Working in hi-expansion foam ............................................................................ 61
Appendix 2 –Returning the BA set to OSG .............................................................................. 62
Appendix 3 –‘A’ test aide-memoire and BPA ........................................................................... 64
Appendix 4 –‘B’ test aide memoire and BPA ............................................................................ 70
Appendix 5 –BA set charging point and stowage defect codes.................................................... 77
Document history ............................................................................................................... 78

476 Issue date: 17 November 2006 3 of 80
1Introduction
1.1 This policy provides technical information for the Dräger PSS 7000 breathing apparatus (BA) set.
Information on breathing apparatus procedures is contained in Policy number 466 –Respiratory
protective equipment - breathing apparatus –operational procedures.
1.2 The PSS 7000 standard duration breathing apparatus (SDBA) set will give a working duration of
31 minutes when applying a consumption rate of 50 litres per minute (LPM). The safety margin
duration is 12 minutes with the electronic low pressure warning (LPW) actuating at 84 bar.
1.3 The PSS 7000 extended duration breathing apparatus (EDBA) set will give a working duration of
45 minutes when applying a consumption rate of 58 litres per minute (LPM). The safety margin
duration is 18 minutes with the electronic low pressure warning (LPW) actuating at 84 bar.
1.4 For operational use the complete BA set is made up of a PSS 7000 BA set including cylinder with
cover fitted, entry control tally, personal line, BA cable cutter in pouch and log book (which is
held on station unless BA set is sent for service or repair).
1.5 Main features of the PSS 7000 set:
•Positive pressure, first breath activated.
•Ergonomic carrying system, adjustable to suit wearer.
•Electronic monitoring unit with telemetry.
•Second person connection hose and quick release coupling (QRC) coupling.
•Dual purpose face mask (DPFM) that allows for either the connection of a lung demand valve
(LDV) positive pressure, or a filter cartridge (FC) negative pressure.
1.6 For further information regarding this policy, please email the RPE and Hazmat PPE mailbox

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PSS 7000 SDBA set overview
In-line connection QRC
Waist belt
LFB image id 1136791
FPS 7000 dual purpose face mask
Inner mask
Lung demand valve, first breath
button and additional flow button
Second person connection QRC
Bodyguard 7000 user interface unit
(display), DSU button and low
pressure warning device
Padded shoulder harness
SDBA 8 litre cylinder and cover
BA personal line, escape hood and
BA cable cutter
Second person connection
and Bodyguard 7000 air
supply hoses
‘D’ ring for attachment of
personal line karabiner –
(available on both sides of set)
LFB image id 1136779
In-line connection
air supply hose
‘D’ rings
Exhalation valve
and cover
L
FB image id 1136795
LFB image id 1136793
Telemetry module
Cylinder valve group

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PSS 7000 EDBA set overview
In-line connection QRC
Waist belt
LFB image id 1136771
FPS 7000 dual purpose face mask
Inner mask
Lung demand valve, first breath
button and additional flow button
Second person connection QRC
Bodyguard 7000 user interface unit
(display), DSU button and low
pressure warning device
Padded shoulder harness
EDBA 6.8 x 2 cylinder pack and
cylinder cover
BA personal line, escape hood and
BA cable cutter
Second person connection
and Bodyguard 7000 air
supply hoses
‘D’ ring for attachment of
guide line bag and personal
line karabiner –(available on
both sides of set)
LFB image id 1136768
In-line
connection air
supply hose
Cylinder valve
group
Exhalation
valve and cover
LFB image id 1136773
Telemetry
Module
LFB image id 1136774
‘D’ rings

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2Component parts
2.1 The PSS 7000 –component parts
(a) Front view SDBA
1. Bodyguard 7000 user interface unit (display).
2. SDBA entry control tally (yellow).
3. Second person connection QRC.
4. Second person hose retaining clip.
5. Cylinder retaining strap and securing mechanism.
6. In-line connection QRC.
7. FPS 7000 dual purpose face mask.
8. Lung demand valve (LDV).
9. Waist belt adjustment buckles.
10. Waist belt buckle.
11. BA personal line housing, karabiner attached to small ‘D’ ring.
12. Backplate incorporating telemetry module.
13. First stage reducer incorporating cylinder connection.
14. Medium and high pressure hoses.
15. Waist belt ‘D’ring for attachment of guide line bag and BA team personal lines.
16. Second person connection hose.
LFB image id 245590
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14
12
15
11
15
9
10
16
1
3
4
5
6
7
8
9
10
2

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(b) Rear view (face mask removed for clarity)
17. 3-point height adjustable, lightweight, high strength, carbon composite backplate.
18. Integrated hose channels.
19. Sliding and swivelling waist belt.
20. Rechargeable battery pack.
21. Pressure sensor housing.
22. Padding material; high wear resistance and high grip properties.
23. Shoulder strap adjustment buckles.
24. Hose sleeves on shoulder harness to reduce snagging and are reflective:
(a) Leading to FPS 7000 face mask.
(b) Leading to Bodyguard 7000.
Note: the second person connection hose must not be roved under the hose sleeve as this
would disable its quick release.
25. Electronic monitoring unit (EMU).
LFB image id 245588
21
18
19
22
25
20
24 a
17
24 b
18
23

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(c) Front view EDBA to indicate differences from SDBA
26. Lower cylinder connection guide.
27. EDBA entry control tally (red).
28. Upper cylinder retaining bracket incorporating spring clip.
29. Red sleeve to in-line connection hose.
30. Floating first stage reducer.
LFB image id 1136775
27
29
26
30
28

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LFB image 245591
LFB image 245570
3Backplate assembly
General
3.1 The height adjustable, and articulating backplate assembly, provides the wearer maximum
comfort and ease of use, resulting in reduced wearer fatigue. The backplate assembly consists of
three elements:
1. The adjustable shoulder yoke.
2. The backplate.
3. The waist belt pivot slide assembly.
3.2 Each of the elements is manufactured from a moulded
carbon composite material, providing an anti-static,
lightweight and durable system.
3.3 The adjustable shoulder yoke has two guide arms that
locate, and slide, in the two channel slots in the rear of
the backplate.
3.4 At the base of the backplate is the waist pivot slide
assembly. This unit is assembled to a spring loaded
vertical slide that is guided in a vertical slot in the
backplate.
3.5 Two compression springs, in the slide assembly, act against the slide and pivot slide assembly to
hold the unit at the top of the slide.
3.6 When wearing the BA set, the waist pivot slide assembly slides, and pivots, in response to the
twisting and bending movements of the upper body of the wearer. This flexibility improves the
weight distribution, and provides freedom of movement and increased manoeuvrability for the
wearer.
3.7 For maximum comfort and improved weight distribution adjust the
shoulder straps to allow the BA set waist belt to be positioned
comfortably on the hips so that weight is taken through legs.
3.8 A twin hook arrangement, moulded at the base of the SDBA backplate,
provides a positive mounting for the body of the pressure reducer.
3.9 Located in the recess behind the twin hook is a pre-loaded coiled return
spring. The spring latches onto an extended portion (lug) on the body
of the pressure reducer, securing the reducer assembly in its twin hook
location.
3.10 A degree of pivotal movement of the reducer is possible to allow for the
alignment of the hand wheel of the reducer to the cylinder valve.
3.11 The EDBA reducer is not mounted to the backplate.
3.12 A rubber shock buffer, at the base of the backplate, provides additional
impact protection.
3.13 Side handles, incorporated into the backplate moulding, allow for the
BA set to be easily carried (without cylinder attached).
3
2
1

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LFB image 245544
LFB image 245546
Short Medium Long
LFB image 245554 LFB image 245552 LFB image 245550
2
3
1
4
4
2
Adjustment
3.14 Three pre-set height settings are available to suit the body length of the individual wearer (‘S’ -
short, ‘M’ - medium, ‘L’ - long), and these associated letters are embossed along the guide arms
of the shoulder yoke.
3.15 A locking mechanism for the shoulder yoke is located at the rear
of the backplate and consists of two spring loaded buttons.
3.16 Body length adjustment is achieved by using the finger and
thumb to open the locking mechanism buttons, and then sliding
the shoulder yoke to align the buttons with the required ‘letter’.
3.17 Releasing the buttons will allow them to retract and locate into the
slots in the guide arms when an audible ‘click’ will be heard
locking and securing the shoulder yoke to the required height
setting.
3.18 This adjustment is carried out during ‘A’ and ‘B’ testing if
required.
4Harness and cylinder strap assembly
4.1 The harness arrangement consists of the following:
1. Left, and right shoulder padding with slide lock
buckle, hose retaining flap –button locking.
2. A pair of adjustable (pull-down) shoulder
straps connected to the slide locks buckles of
the shoulder padding.
3. A pair of waist padding elements with a buckle
arrangement fitted to the slide lock buckles
strap.
4. A pair of adjustable (pull forward) waist belt
straps with a push-in quick release buckle set.
4.2 The inner padding is produced from a flame
retardant, closed cell, fully vulcanised Polyolefin
foam. The inner liner is then covered with outer
layers of woven polyester covered with
Neoprene. The outer edges are covered with a
stitched binding of the same material as the outer
layer.