SCOTT Sigma 2 User Manual

i
Self-contained Breathing Apparatus
Contents
WARNINGS ............................................................................................................................................................................... ii
1. INTRODUCTION ........................................................................................................................................................ 1
1.1 IMPORTANT .............................................................................................................................................. 1
1.2 BREATHABLE AIR .................................................................................................................................... 1
1.3 APPARATUS DURATION .......................................................................................................................... 1
1.4 PERSONNEL TRAINING ........................................................................................................................... 1
1.5 SERVICING ............................................................................................................................................... 2
1.6 SPARE PARTS AND ACCESSORIES ....................................................................................................... 2
1.7 NOTIFIED BODIES .................................................................................................................................... 2
2. TECHNICAL DESCRIPTION ..................................................................................................................................... 2
2.1 GENERAL .................................................................................................................................................. 2
2.2 APPARATUS DESCRIPTION .................................................................................................................... 2
2.3 PNEUMATIC SYSTEM .............................................................................................................................. 4
2.4 REDUCER ................................................................................................................................................. 4
2.5 DEMAND VALVE ....................................................................................................................................... 4
2.6 FACEMASKS ............................................................................................................................................. 5
3. PRE-USE AND MONTHLY CHECKS ........................................................................................................................ 6
3.1 GENERAL .................................................................................................................................................. 6
3.2 PNEUMATICS ............................................................................................................................................ 6
3.3 DEMAND VALVE ....................................................................................................................................... 6
3.4 CHECK FACEMASK .................................................................................................................................. 6
3.5 POSITIVE PRESSURE, BYPASS AND LEAK TEST ................................................................................. 7
3.6 WHISTLE TEST ......................................................................................................................................... 7
3.7 REPLACING CYLINDERS ......................................................................................................................... 7
3.7.1 Fitting a replacement Cylinder of the same size. ....................................................................... 8
3.7.2 Fitting a replacement Cylinder of a different size. ...................................................................... 8
4. DONNING PROCEDURE .......................................................................................................................................... 8
4.1 HARNESS .................................................................................................................................................. 8
4.2 DON FACEMASK ...................................................................................................................................... 8
4.2.1 Head Harness ............................................................................................................................ 8
4.2.2 Head-net .................................................................................................................................... 9
4.3 OPEN CYLINDER VALVE ......................................................................................................................... 9
4.4 FACEMASK SEAL CHECK ...................................................................................................................... 10
4.5 BYPASS CHECK ..................................................................................................................................... 10
4.6 LEAK TEST .............................................................................................................................................. 10
4.7 WHISTLE TEST ....................................................................................................................................... 10
4.8 CYLINDER PRESSURE .......................................................................................................................... 11
5. DOFFING INSTRUCTIONS ..................................................................................................................................... 11
5.1 REMOVE FACEMASK ............................................................................................................................. 11
5.2 TURN OFF CYLINDER ............................................................................................................................ 12
5.3 REMOVE APPARATUS ........................................................................................................................... 12
5.4 CLEAN AND CHECK APPARATUS ........................................................................................................ 12
6. AFTER USE ............................................................................................................................................................. 12
6.1 CLEAN FACEMASK ................................................................................................................................ 12
6.2 CLEAN APPARATUS .............................................................................................................................. 13
6.3 DEMAND VALVE ..................................................................................................................................... 13
6.4 CHECK APPARATUS .............................................................................................................................. 13
6.5 FIT FULLY CHARGED CYLINDER .......................................................................................................... 13
6.6 LEAK TEST .............................................................................................................................................. 13
6.7 RECORD TEST DETAILS ....................................................................................................................... 14
6.8 STORAGE ................................................................................................................................................ 14
7. SCHEDULED MAINTENANCE ................................................................................................................................ 14
7.1 MONTHLY ................................................................................................................................................ 14
7.2 ANNUALLY .............................................................................................................................................. 14
Registered Office: Scott Health and Safety Limited, Pimbo Road, West Pimbo,
Skelmersdale, Lancashire, WN8 9RA, England.

SCOTT Sigma 2 Specifications

General

Type	Self Contained Breathing Apparatus (SCBA)
Application	Firefighting, Industrial
Cylinder Duration	Varies based on cylinder size and breathing rate
Approval	EN 137
Compatibility	Compatible with various cylinders
Features	Ergonomic design