Chapter 5
After-use Care and Maintenance
Edition 1 – December 2019
SAFETY FIRS T
89
MSA G1 Classic Breathing Apparatus
Disinfecting the face mask
Step
Description
Photos
1
Remove the facemask from the demand
valve.
Check that the nose cup is securely fitted,
ensuring the correct orientation.
Throughout the facemask after use-
maintenance and cleaning process, ensure
that the demand valve remains dry.
Rinse the facemask with fresh water to
remove the majority of particles, waste
materials and contaminants.
2
Where BioGuard
®
is supplied from State
PPE&C Management Centre, pre-diluted to a
1:3 ratio, further dilution in water is required
before use. See Approved Mixing Ratios.
Mix BioGuard® in a suitable and clean vessel
such as a bucket, sink or container.
Completely submerge the mask for 10
minutes. Agitate if possible.
Do not exceed 10 minutes with facemask
submerged.
Approved BioGuard®
mixing ratios
Fresh
water
BioGuard®
(1:3 solution)
5 ltrs
250 ml
10 ltrs
500 ml
15 ltrs
750 ml
20 ltrs
1000 ml
If agitating, chemical resistant gloves and eye protection must be worn.
3
After 10 minutes thoroughly rinse the mask
inside and out with clean, fresh running
water.
Clean and rinse the exhalation valve assembly by flushing it with clean,
running water from a tap. If running water is not available, soak and rinse
the facemask in clean water and agitate thoroughly to ensure the water can
rinse the exhalation valve assembly.
Replace the water for each mask
.
