
DONNING THE FACEPIECE
P/N 595390-01
Rev D
202009
19
Figure 3-10 Donning problems
NOTE
Be careful not to disturb the facepiece seal by pressing too firmly during the negative pressure User Seal
Check.
TIP
The OSHA Respiratory Protection Standard requires teams of at least two people during interior structural
firefighting [29CFR1910.134(g)(4)(i)] when entering into and operating in an IDLH atmosphere. If necessary,
ask your partner to verify that you have donned the facepiece properly.
Twisted head harness strap
Head harness not centered
Head harness too high
Facepiece too low