MSA G1 SCBA User manual

MSAsafety.com
Operating Manual
G1 Integrated SCBA System
Order No.: 10165342/04

MSA Europe GmbH
Schlüsselstrasse 12
8645 Rapperswil-Jona
Switzerland
[email protected]
www.MSAsafety.com
© MSA 2019 All rights reserved

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G1 Integrated SCBA System
Contents
1 Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Correct Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Liability Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Safety and Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 G1 Facepiece (Full Face Mask) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.1 Mask Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 G1 Demand Valve (LGDV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3 G1 Heads-Up Display (HUD) (Electric Version Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4 Cylinder and Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5 G1 Pressure Reducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6 G1 Harness and Carrier Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.7 G1 Alarm and Control Unit (Automatic Distress Signal Unit, ADSU) (Version with Integrated
Electronics Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7.1 G1 Power Module (Version with Integrated Electronics only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.8 Telemetry (Long range radio) Module (Version with Integrated Electronics Only). . . . . . . . . . . . . 17
2.9 G1 Voice Projection Speaker (Optional for Version with Integrated Electronics). . . . . . . . . . . . . . 18
3 Size Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Visual Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 Full Face Mask (see also Full Face Mask Operating Manual) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Lung Governed Demand Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3 Pressure Reducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Cylinder and Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.5 Carrier Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6 Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.7 Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.8 Battery Module (Alkaline or Rechargeable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.9 Record Keeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 Check that the LGDV and Full Face Mask Can Hold a Negative Pressure (Before Use only) . . . 22
5.2 Tightness Check of the Pressure Reducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Check Function of LGDV (Before Use only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4 Tightness Check of LGDV with Universal Test Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.5 Checking the Closing Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6 Control Module, Power Module, HUD, and Primary Low-Pressure Warning Device Operation . . 24
5.7 Voice Projection Speaker Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6 Donning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1 Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.2 SCBA Donning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.3 Full Face Mask Donning Procedure (see also Facepiece Operating Manual) . . . . . . . . . . . . . . . . 30
6.3.1 Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 31
6.3.2 Installing the Push-to-Connect LGDV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7 During Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1 Cold Weather Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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G1 Integrated SCBA System
8 G1 Heads-Up Display (HUD) (Version with Integrated Electronics only) . . . . . . . . . . . . . . . . . . . . . . 35
8.1 G1 HUD Pressure Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.2 G1 HUD Alarm Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9 Control Module (ADSU) (Version with Integrated Electronics only). . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.1 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.1.1 Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.2 Primary Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.3 Secondary Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.4 Thermal Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.5 Secondary Alarm Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.6 ID Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.7 Screen Displays During Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.8 Button Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.9 Turning OFF the Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10 After Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1 Removing the SCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.2 Removing the Full Face Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11 Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11.1 Safety Precautions for MSA Self-Contained Breathing Apparatus Cylinders. . . . . . . . . . . . . . . . . 51
11.2 Installing Quick Connect Adapter (alphaCLICK 2) to Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
11.3 Changing the Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
11.4 Charging Cylinders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
12 Quick-Fill Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
12.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 55
12.2 Filling Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
13 Maintenance and Care of the SCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
13.1 Maintenance Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
13.2 Masks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
13.3 Lung Governed Demand Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
13.4 Cleaning and Disinfection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
13.4.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
13.4.2 Disinfection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
13.4.3 Cleaning/Disinfection Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.4.4 Cleaning/Disinfection Lung Governed Demand Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.4.5 After Cleaning/disinfection LGDV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.4.6 Compressed Air Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.5 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
13.5.1 Rechargeable Battery Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
14 Personalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14.1 Name (Identification - ID) Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14.2 Team Tag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14.3 Base station ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
15 Telemetry Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 69
15.1 Scanning the ID Tag into the Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
15.2 Using the Base Station with the Telemetry Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
15.3 Using the SCBA with Telemetry Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

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G1 Integrated SCBA System
16 Safekeeping and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
16.1 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
16.2 Full Face Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
17 Buddy Breather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
17.1 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
17.2 Inspection Before Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
17.3 Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
17.4 Providing or Obtaining Emergency Breathing Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
17.5 Hose Connection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
18 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
18.1 Complete Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
18.2 Marking for the SCBA G1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
18.3 G1 Electronic Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
18.3.1 Marking, Certificates and Approvals According to the Directive 2014/34/EU (ATEX) . . . . . . . . . . 79
18.3.2 Marking and Certificates according to IECEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
18.4 Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
19 Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
19.1 SCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
19.2 Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
19.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 84
19.4 Telemetry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
19.5 Full Face Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
19.5.1 ATO Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

6
Safety Regulations
GB
G1 Integrated SCBA System
1 Safety Regulations
1.1 Correct Use
The MSA G1 - referred to hereafter also as device - is a pressure-demand self-contained
breathing apparatus (SCBA) operating independent of the ambient air for use in firefighting in
atmospheres immediately dangerous to life or health.
Breathable air according to EN 12021 is supplied to the user from a compressed air cylinder via
a pressure reducer, a lung governed demand valve and a face piece. The exhalation air is
released directly into the ambient atmosphere.
In combination with a certified Facepiece (Full Face Mask) the device protects the wearer against
inhalation of hazardous substances and mixtures, harmful biological agents and oxygen defi-
ciency.
DANGER!
This device is a pure gas protection device. It is not suitable for underwater diving.
WARNING!
Only trained individuals should be allowed to use the device after ensuring sufficient knowledge
on donning and general use of the device. Failure to follow this warning can result in serious
personal injury or death.
WARNING!
Read this manual carefully before using the device. The device will perform as designed only if it
is used and maintained in accordance with the manufacturer's instructions. Otherwise, it could fail
to perform as designed and persons who rely on this device for their safety could sustain serious
personal injury or death.
Before use the product operability must be verified. The product must not be used if the function
test is unsuccessful, it is damaged, a competent servicing/maintenance has not been made,
genuine MSA spare parts have not been used.
1.2 Liability Information
MSA accepts no liability in cases where the device has been used inappropriately or not as
intended. The selection and use of the device are the exclusive responsibility of the individual
operator.
Product liability claims, warranties and guarantees made by MSA with respect to the device are
voided, if it is not used, serviced or maintained in accordance with the instructions in this manual.
1.3 Safety and Precautionary Measures
• Approved for use at temperatures between -40 °C and +60 °C depending on facepiece certifi-
cation. For detailed information, see chapter 18.
• The device may be used in explosive atmospheres according to the class stated in the ATEX
certification. For detailed information, see chapter 18.
• The ATEX class of any other equipment used together with this device has to be regarded as
well. The lowest class sets the limit.
• If the device is used in an explosive atmosphere, dissipative clothes and footwear must be
used in conjunction with dissipative grounds. When used in explosive atmospheres there must
be direct contact between the head harness of the mask and the head. Do not use head cover-
ings (e.g.fire hoods) under the head harness.
• Compatibility with other types of Personal Protective Equipment (PPE) worn during use of the
device (e. g. clothing and helmets) has to be ensured according to Directive 89/656/EC.
• Use of the device in a vicinity that generates strong electrostatic charges in explosive atmo-
spheres is not allowed.
• Do not expose the device to any substances that will or might attack any part of the SCBA,
causing the SCBA to not perform as designed and approve

7
Safety Regulations
GB
G1 Integrated SCBA System
1.4 Approval
The device described in this operating manual complies with Directive 89/686/EC or
Regulation (EU) 2016/425, respectively. The device is a self-contained open circuit compressed
air breathing apparatus according to EN 137:2006, Type 2.
The function of the electronic components were not assessed for the certification in accordance
with Directive 89/686/EC or Regulation (EU) 2016/425, because even in case of a complete
failure of all electronic components, the respiratory protection provided by MSA G1 remains
unchanged.
1.5 Contact Information
In the event of a product concern, contact the local MSA authorized repair center or distributor,
they will provide the necessary information to MSA for issue resolution. To report any serious
concerns or to inquire about the products, go to MSAsafety.com for information on the local MSA
authorized repair center or distributor.
Only use breathable air quality in accordance with EN 12021 and other applicable
national regulations.

8
Description
GB
G1 Integrated SCBA System
2 Description
The G1 SCBA is a pressure-demand self-contained open circuit breathing apparatus (SCBA)
operating independent of the ambient air for use in atmospheres immediately dangerous to life or
health.
Breathable air is supplied to the user from a compressed air cylinder via a pressure reducer, a
lung governed demand valve (LGDV) according to EN 137:2006 and a full face mask according
to EN 136:1998 (see Operating Manual of full face mask). The exhalation air is released directly
into the ambient atmosphere.
The integrated alarm and control unit (ADSU) provides the user with the ability to monitor move-
ment through a motion sensor. When a user remains motionless for 30 seconds, the ADSU device
goes into full alarm to alert those around the user. The control module monitors cylinder pressure,
battery status and visually indicates different alarm status of the G1 SCBA.
The G1 SCBA consists of the following components:
No. Device with integrated electronics No. Device with pneumatics only
1 G1 Facepiece 1 G1 Facepiece
2b
G1 Demand Valve (LGDV, Lung Governed
Demand Valve)
with medium pressure connection
2a G1 Demand Valve (LGDV, Lung Governed
Demand Valve)
3G1 Heads Up Display (HUD)
part of both full face mask and LGDV
4G1 Pressure Reducer
with low pressure warning device 4a G1 Pressure Reducer
4b with Single Line (SL) manifold
5 G1 Control Module
6 G1 Power Module
7Cylinder and Valve Assembly, optional
alphaCLICK 2 7Cylinder and Valve Assembly, optional
alphaCLICK 2
9 G1 Carrier and Harness Assembly 9 G1 Carrier and Harness Assembly
Optional components: Optional components:
8 Quick fill 8 Quick fill
10 G1 Voice Projection Speaker
11 Long Range Radio for SCBA Telemetry
12 Buddy Breather 12 Buddy Breather

9
Description
GB
G1 Integrated SCBA System
Fig. 1 System Overview (schematic representation)
RFID
1
2a
2b
2b
3
4
4a
12
5
6
7
8
9
10
RADIO
11
4b

10
Description
GB
G1 Integrated SCBA System
2.1 G1 Facepiece (Full Face Mask)
The full face mask provides breathable air from the LGDV.
The inhalation air flows from the component housing of the mask past the inhalation valve to the
inside of the lens (thus keeping the lens fog-free) and then through the inlet valves into the
nosecup.
The exhalation air passes through the exhalation valve directly to the ambient air.
Fixed Push-to-Connect component housing only: If in a safe atmosphere no demand valve is
attached, ambient air can be inhaled directly through an open port to facilitate breathing and
speaking with no resistance.
The faceblank is made of a special soft rubber compound and assures a snug, comfortable fit and
a tight seal. The mask and the nosecup are available in 3 sizes (small, medium, large).
The mask is available with different head harnesses and different component housings.

11
Description
GB
G1 Integrated SCBA System
2.1.1 Mask Versions
Harness Versions
The mask is available with different head harnesses; Kevlar (textile) 4-point or rubber (5-point).
The rubber head straps are numbered to indicate the correct tightening sequence.
Fig. 2 Kevlar (textile) harness
Fig. 3 Rubber harness

12
Description
GB
G1 Integrated SCBA System
Component Housing Versions
The mask is available with the following component housing:
Fig. 4 Fixed Push-To-Connect
2.2 G1 Demand Valve (LGDV)
The mask mounted G1 Demand Valve is a pressure-demand LGDV, which maintains a positive
pressure in the full face mask while the SCBA is in use. The positive pressure LGDV reduces the
pressure coming from the pressure reducer further to provide breathable air to the user.
The LGDV is connected to the full face mask with a fixed position Push-To-Connect (PTC)
connection.
The purge cover allows users to activate the LGDV manually or provide a quick burst of air during
use.
In the version with integrated electronics, the LGDV houses an optional electronic module which
provides HUD functionality and microphone placement. The microphones are activated when the
LGDV is connected to the full face mask and the user begins breathing. Inhalation noise is not
amplified by the system. The top button of the LGDV also serves as a buddy light, it lights up
yellow or red if the cylinder pressure falls below a certain threshold.
For the version with integrated electronics, the hose for the LGDV is available in two options,
continuous or quick connect. The continuous hose provides an uninterrupted connection from the
pressure reducer to the LGDV. A quick connect coupling is positioned on the chest between the
pressure reducer and LGDV to enable LGDV removal from the SCBA for testing or repair. Both
types of hoses for electronic versions have integrated wiring and hoses.
In the pneumatics only version, the LGDV is connected to the SL manifold via a quick connect
coupling.

13
Description
GB
G1 Integrated SCBA System
2.3 G1 Heads-Up Display (HUD) (Electric Version Only)
The HUD is integrated into the LGDV and projects different colored light into the full face mask to
indicate current cylinder pressure and alarm status of the device. The HUD allows users to make
conclusions about cylinder pressure and alarm status while wearing the SCBA. Status information
is provided from the SCBA while operating power is received from the central power module. The
HUD consists of 7 LEDs separated to 3 on the left and 4 on the right side to improve visibility and
clarity. An integrated ambient light sensor in the LGDV varies the LED intensity depending to envi-
ronmental light conditions. (optional setting).
2.4 Cylinder and Valve Assembly
The cylinder and valve assembly (see also chapter 11) stores high pressure air which will be
reduced to provide the user breathable air. Cylinders are available in multiple sizes. The valve
assembly provides the user the ability to open the pressure to the rest of the system. The valve
assembly consists of a handwheel for opening and closing the valve and a threaded high pressure
connection according to EN 144.
Optionally, an alphaCLICK 2 quick connection is available. In this case, the pressure reducer is
equipped with the male part of the coupling. The female part (alphaCLICK 2 adaptor) is screwed
into the cylinder valve.
2.5 G1 Pressure Reducer
The pressure reducer reduces the cylinder pressure to medium pressure, which is in turn further
reduced by the LGDV to a pressure that is respirable by the user. The pressure reducer incorpo-
rates a fail safe design which ensures air flow to the user in the event of a malfunction within the
pressure reducer.
The pressure reducer incorporates a medium pressure relief valve, and a cylinder connector with
a sintered filter to capture particulates that may be in the air stream.
The pressure reducer is marked with a serial number, followed by the year of manufacture (two
digits).
For the electronic version, the pressure reducer contains a primary low pressure warning signal.
In the pneumatics only version, the pressure reducer is connected to the SL manifold containing
a pressure gauge (showing the cylinder pressure), a warning whistle for low pressure alarm, a
connector for the LGDV and a second connector for emergency situations.

14
Description
GB
G1 Integrated SCBA System
Primary Low Pressure Warning Device
The primary low pressure warning device is an acoustic warning device (signal whistle). It triggers
a continuous warning signal when the cylinder pressure drops below 55 5 bar.
Depending on pneumatics the low pressure warning device is located at the G1 Pressure Reducer
next to the Cylinder and Valve Assembly (Fig. 5) or within the Single Line (SL) Manifold (Fig. 6
"SL manifold").
Fig. 5 Standard warning whistle
Fig. 6 SL manifold
Quick-Fill Coupling (optional)
The Quick-Fill coupling (see also chapter 12) can be used to recharge the cylinder in extraordinary
situations while it is attached to the SCBA.
1 Pressure gauge 3 Warning signal [signal whistle]
2 Second connection 4 Lung governed demand valve coupling
3
4
2
1

15
Description
GB
G1 Integrated SCBA System
2.6 G1 Harness and Carrier Assembly
The harness and carrier assembly consists of:
• Backplate (houses the pressure reducer, and, if present, the power module and battery
module)
• Cylinder retainer to hold the cylinder
• Shoulder pads
• Adjustable pull straps
• Hip belt
•Waistbelt
• LGDV retainer
Shoulder Straps
The shoulder straps provide weight distribution across the shoulder, friction pads to prevent slip-
page of the straps, increased visibility with retroreflection material, and steel buckles for a secure
fit. The serviceable shoulder straps allow the user to easily access the hoses without having to
disconnect them from the SCBA. The tunnels on these straps are released using snap buttons to
ease in swapping or repair of components. The inside and outside of the shoulder straps are iden-
tifiable by print/stitching. A full face mask clip can also be attached to either shoulder strap.
The control module, LGDV, and optional voice projection speaker can be positioned either on the
left or right shoulder strap. Typically the LGDV and voice projection speaker are placed on the left
shoulder and the control module is placed on the right shoulder. The LGDV keeper can be posi-
tioned in multiple locations including the hip belt. The LGDV and the LGDV retainer must be on
the same side of the user.
Hip Belt
The hip belt is available in two versions:
• Adjustable Hip Belt - The adjustable hip belt provides the user three positions for ideal comfort.
The hip belt can be adjusted by one-hand and can be adjusted while worn. The hip belt also
has a swivel feature to allow it to move with the user.
• Basic Hip Belt - The classic hip belt is a fixed position, non-swivel unit that provides a low
profile, light weight hip belt option for the user.

16
Description
GB
G1 Integrated SCBA System
2.7 G1 Alarm and Control Unit (Automatic Distress Signal Unit, ADSU) (Version with Integrated
Electronics Only)
The alarm and control device is a combination of the control module located on the chest and the
power module integrated into the backplate of the SCBA. The integrated motion sensor detects
movements and goes into full alarm when the user remains motionless for 30 seconds. The
G1 alarm and control unit uses acoustic and visual alarm indications.
G1 Control Module (Version with Integrated Electronics Only)
The G1 control module is the user’s interface with the SCBA and ADSU device.
The control module is assembled to the high pressure air source and to the power module by a
pneumatics and electronic hose assembly. The unit combines an analog gauge and graphical
display to provide current status information of the SCBA:
• numeric cylinder pressure
• battery status
• alarms
• power module status
• remaining service time
• Telemetry radio link and evacuation status
The control module automatically lights up the analog gauge and turns the display on when the
user lifts the unit up from the chest.
Furthermore the control module serves the user with a manual alarm button that activates the full
acoustic and visual alarms of the device.
Fig. 7 Control module
1 Analog gauge 4 Manual alarm
2 Color display 5 Reset button
3 Power/pressure inlet
1
2
3
4
5

17
Description
GB
G1 Integrated SCBA System
2.7.1 G1 Power Module (Version with Integrated Electronics only)
Fig. 8 Power module
The power module serves as the power supply and provides all of the information for the control
module, LGDV and voice projection speaker.
The power module is connected to the backplate. It connects to the battery module, emits audible
alarms and pre-alarms and has 4 buddy lights.
The battery module is equipped with six C-cell batteries (see also chapter 13.5 "Batteries"). The
system notifies the user when the batteries need to be replaced by emitting an audible tone from
the power module, displaying an empty battery icon on the display of the control module, and a
flashing yellow LED on the HUD within the full face mask.
The power module is also equipped with a Quick-Fill light, which activates when low pressure
alarm (configurable to medium pressure alarm) occurs, to make it easier to see the optional Quick-
Fill connector in the dark.
The power module has a data logging feature that records information about the SCBA while the
control module is turned on. This data log memory can be accessed using the
MSA alphaCONTROL 2 Software.
The power module contains an internal real time clock. This clock can be reset using the
MSA alphaCONTROL 2 Software. By default, the internal clock is set to Central European Stan-
dard Time.
NOTICE
Before placing the SCBA in service, verify that the internal clock is set to the appropriate time as
per the user's geographic location using the G1 alphaCONTROL 2 Software. Failure to do so can
result in inaccurate data logging.
2.8 Telemetry (Long range radio) Module (Version with Integrated Electronics Only)
The telemetry module allows the firefighter a two-way communication with Incident Command
unit. The firefighter's vital statistics such as cylinder pressure, approximate remaining service
time, motion alarm, low battery alarm, and thermal alarms are transmitted back to Incident
Command. The telemetry module allows incident command to remotely evacuate firefighters and
transmits manual alarms from the firefighter. The radio transmitter is located inside of the power
module. For details see Chapter 15.

18
Size Selection
GB
G1 Integrated SCBA System
2.9 G1 Voice Projection Speaker (Optional for Version with Integrated Electronics)
The voice projection speaker amplifies and clarifies the speech from the full face mask during use.
When inhaling, the breathing sound will not be amplified. The voice projection speaker is turned
OFF when the complete SCBA is turned OFF and can also be activated/deactivated with its
button. Pressing of the button is acknowledged by a beep.
3 Size Selection
Regardless of facial dimensions and respirator sizing charts, an actual respirator fit test, either
qualitative or quantitative, is recommended according to EN 529:2005 to ensure the correct respi-
rator size selection.
(1) Fit test the respirator size relative to your facial features and dimensions. The safety admin-
istrator or program manager might assist in selecting the initial size to try.
(2) Carefully don the mask and conduct a negative pressure seal check. See donning instruc-
tions for procedure.
(3) If the full face mask does not pass the negative pressure seal check or feels uncomfortable,
try the next nearest size relative to your face.
Once the proper size is selected, the respirator must pass a negative pressure seal check every
time the full face mask is donned to ensure proper fit before using the respirator.
If other than facial seal leakage is detected, the condition must be investigated and corrected
before another check is carried out.
The full face mask must also pass the negative pressure seal check before the user attempts to
enter a toxic atmosphere.
The full face mask will not furnish protection unless all inhaled air is drawn from the SCBA only.

19
Visual Inspections
GB
G1 Integrated SCBA System
4 Visual Inspections
For inspection intervals of the device see chapter 13.1. Conduct a visual inspection upon receipt.
WARNING!
Do NOT examine the SCBA before it is decontaminated, cleaned, and disinfected if there is a
risk of exposure to hazardous contaminants. Obey the applicable decontamination proce-
dures, clean and disinfect the SCBA, then examine it.
If the SCBA shows damage, deterioration, or any of the conditions listed in the Visual Inspec-
tions section, remove the SCBA from service and return it to an MSA trained and certified
repair technician.
Never substitute, modify, add, or omit parts. Use only exact replacement parts in the configu-
ration as specified by MSA.
Failure to obey these warnings can result in serious personal injury or death.
WARNING!
If the SCBA shows any of the conditions listed in the Visual Inspections section, remove the SCBA
from service. Make sure an MSA trained and certified repair technician corrects the unsatisfactory
condition before returning the SCBA to service.
Failure to follow this warning can result in serious personal injury or death.
WARNING!
Never substitute, modify, add, or omit parts. Use only exact replacement parts in the configuration
as specified by MSA.
Failure to follow this warning can result in serious personal injury or death.
WARNING!
Never substitute, modify, add, or omit parts. Use only exact replacement parts in the configuration
as specified by the manufacturer. Failure to follow this warning can result in serious personal injury
or death.
All Components
(1) Inspect all components for deterioration, dirt, cracks, debris, tears, holes, stickiness, signs of
heat or chemical related damage or other visible signs of damage.
(2) Inspect all straps (shoulder straps, pull straps, hip belt, waist straps, full face mask head
harness) for tears, cuts, wear, abrasion, missing buckles or straps.
(3) Perform all component specific inspections listed below.
4.1 Full Face Mask (see also Full Face Mask Operating Manual)
(1) Inspect the lens for cracks, scratches, deformation, and color change.
(2) Check the full face mask rubber for a tight seal and secure fit to the lens ring.
(3) Ensure the exhalation valve is clean and operates easily. The valve must move off the seat
and return when released (from inside the full face mask).
(4) Inspect the full face mask inlet for damage. Ensure the inhalation valve is in place.
(5) Inspect the nosecup to ensure the check valve are in place and the nosecup is secure to the
component housing.

20
Visual Inspections
GB
G1 Integrated SCBA System
4.2 Lung Governed Demand Valve
(1) Ensure that moisture or debris is not present, especially inside the LGDV and in the micro-
phone ports.
WARNING!
DO NOT use any sharp objects to remove dirt or debris from the microphone ports. Rinse with
water to flush ports out. Allow ports to dry fully before placing back into service. Failure to follow
this warning could result in serious personal injury or death.
(2) Ensure the O-ring and seal ring are free of debris and not damaged or missing.
4.3 Pressure Reducer
(1) Threaded Connect: Unthread the handwheel from the cylinder valve (if present).
a) Inspect for thread damage.
b) Ensure an O-ring present and not damaged.
c) Replace the O-ring if damaged.
(2) If the SCBA is equipped with an alphaCLICK 2 Quick Connect:
a) Inspect the quick connect fittings.
b) Ensure that the openings are clear and free of debris and other contaminants.
c) Ensure that the quick connect fittings operate properly and are secured.
(3) alphaCLICK 2 Quick Connect: Turn the quick connect counterclockwise a quarter of a turn
and pull away from cylinder valve to release (if present).
a) Inspect the quick connect for damage.
b) Inspect the adapter for damage.
(4) Inspect the high pressure relief valve for damage.
a) Ensure the relief valve label is not damaged and that the relief valve ports are not showing.
b) If damaged, remove the SCBA from service and replace the relief valve.
(5) Reattach handwheel to the cylinder valve.
a) Threaded Connection: Ensure that the handwheel is handtight (no tools).
b) alphaCLICK 2 Quick Connect: Push the quick connect coupling onto the adapter. Pull on
the quick connect coupling to ensure it is connected properly.
4.4 Cylinder and Valve Assembly
(1) Check the test date on the cylinder approval sticker located on the cylinder neck or on the
cylinder label.
a) Observe national regulations for inspection intervals.
Make sure that the cylinder in use is approved as part of the MSA G1 SCBA system and fulfills all
requirements to be in operation according to the cylinder manual and relevant national regula-
tions.
4.5 Carrier Assembly
(1) Operate the latch on the cylinder band to ensure that it opens and closes properly and that
it holds the cylinder securely.
(2) Ensure that the hip belt is attached securely.
(3) If applicable (power module present): Ensure the power module and pressure reducer are
secured to the backplate by the lower cover.