SR900 — How to
Copyright © 2016 by The S.E.A. Group
5
The mask should collapse against your face and
remain collapsed until you breathe out again.
If the mask returns quickly to its normal shape,
there may be a leakage problem. If so, repeat
the leakage test. If the same problem happens
again, see your supervisor.
Remove a filter
Pull the rubber tab at the bottom of the filter
flange and peel back the rubber rim until the
filter is free.
Wear your breathing hose
There are two types of breathing hose: single
and twin.
Most SR900 configurations can use either the
single or twin hose.
You can use the hose as is, but if your work
involves heat, sparks or open flames, you may
choose to cover the hose with a protective
flame-resistant cover. Both the single and twin
hoses can be protected in this way. Slip the
protective cover around the hose. If required,
fasten with the Velcro straps.
Whatever breathing device you use, the single
hose is designed to be worn on either side of the
body. The twin hose is worn on both sides of
your neck.
