Chapter 5
After-use Care and Maintenance
Edition 1 – December 2019 SAFETY FIRST 123
MSA G1 Electronic Breathing Apparatus
If the facemask and the outside of the demand valve are contaminated with
combustible products it must be cleaned and washed using a mild cleaning
detergent in tepid drinkable quality water, then rinsed thoroughly before
disinfecting in BioGuard
®
.
Do not use any cleaning products that can or might attack any part of the BA.
Do not use alcohol, acetone, trichloroethylene, organic solvents such as
nitrous dilution, spirits, thinners, gasoline or petrol.
Facemasks must be cleaned individually to prevent cross-contamination.
Only totally clean BA components can be effectively disinfected.
Disinfecting the facemask
Step Description Illustration
1 Remove the demand valve from the
facemask.
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 Rations
under Illustration.
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 the facemask
submerged.
Approved BioGuard®
mixing ratios
Fresh
water
BioGuard®
(1:20
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.
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