Chapter 4
Donning and Doffing
64
SAFETY FIRS T
Edition 1 – December 2019
MSA G1 Classic Breathing Apparatus
Step
Description
Photos
.
3.3
Check the cylinder pressure is at or above 250
bar .
For stowage on appliances and to commence operations the pressure in the
cylinder must be 250 bar or more.
4
Fit the facemask.
4.1
Place the five-point head harness over the head.