MSA 92048 Guia Del Usuario página 5

RATCHET AND CHINSTRAP
ADJUSTMENT
1. Open the headband by turning the
ratchet knob counter-clockwise
(left).
2. Place the helmet on your head.
While holding the helmet down on
your head, push the ratchet knob
inward and turn clockwise (it
adjusts in 1/8" increments) until it
is snug and comfortable.
• For Models 1010, 1044, 660C,
664, 360S, 360R and 360R-13,
the headband is adjustable from
6-3/8" to 8-3/8" (51 cm to 67
cm).
• For Model 880, headband is
adjustable from 5-5/8" to 7-5/8"
(45 cm to 61 cm).
• For Models N5A and N6A, head-
band is adjustable from 6-3/8"
to 7-1/2" (51 cm to 60 cm) for
medium size helmets); 7-5/8" to
8-3/8" (61 cm to 67 cm) for large
size helmets).
3. After obtaining a snug fit, lower the
earlap over your ears and the
ratchet knob.
4. Fasten the chin-
strap and adjust
to a snug fit.
The helmet must be properly adjust-
ed to provide maximum protection.
Tightening the ratchet beyond its
limits may cause damage to internal
DONNING
WARNING
gears and result in reduced protec-
tion.
NEVER wear your helmet without
fastening and tightening the chin-
strap.
Failure to follow these warnings can
result in serious personal injury or
death.
RATCHET BAND HEIGHT ADJUST-
MENT (TRADITIONAL AND MOD-
ERN HELMETS)
The back portion of the headband
where the ratchet is located can be
adjusted to three different height set-
tings to maximize comfort.
To adjust the height,
unsnap the ratchet
and move it to the
desired hole. Re-
snap the ratchet and
check to ensure that
it is secure.
SCBA FACEPIECE ADJUSTMENT
The MSA Cairns Traditional and
Modern helmets are equipped with an
exclusive interface that allows the fire-
fighter to wear the helmet comfortably
and safely with most SCBA face-
pieces. The exclusive "adjustable"
design allows for a secure fit of both
helmet and facepiece. When engaged,
the helmet rests in the proper position
and the facepiece seal is protected.
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TAL 134 (L) Rev. 21 - 10043529