GR50 Hard Hat Adjustment
Adjusting and Installing Hard
Hat in Respirator Hood
1. Assemble and adjust the standard Bullard
hard hat suspension or optional ratchet
suspension by following directions on
instruction sheet attached to headband on
hard hat. Read all hard hat warning labels
and instructions. The following Bullard hard
hat models are NIOSH approved for use with
GR50 Series respirator hoods: C30, C30R, S51
and S51R.
2. If desired, install and adjust optional ES42
hard hat chin strap.
3. Before inserting hard hat into hood, remove
the adhesive-backed Velcro
®
strip attached to
the Velcro piece that is sewn into the hood.
4. Peel the backing off the Velcro tab and apply it
to the inside center rear of the hard hat, about
1/4” up from the edge.
5. Insert hard hat into respirator hood with cap
visor facing front of hood (see Figure 9).
6. Tuck cap visor above front elastic band sewn
into hood (see Figure 10).
7. Loop the Velcro strip sewn inside the hood
around the back of the cap and affix it to the
corresponding Velcro tab previously installed
inside the hard hat in step 3.
(see Figure 11).
8. Remove protective film from plastic lens of
respirator hood. If desired, apply optional
20LC or 7714 adhesive-backed lens covers
designed to protect the respirator’s plastic
lens. Apply 2-3 lenses at a time. When lens
becomes soiled, remove by pulling tab at edge
of lens cover to clear your vision.
Figure 9
Figure 10
Figure 11
GR50 Hard Hat Adjustment
GR50 Series Airline
Respirator User Manual
12
13
If Using Optional 20NC Chin Strap:
For most wearers, the headband holds the GR50
hood in place without a chin strap. If an optional
chin strap is desired, refer to the list of replace-
ment parts and accessories.
1. Remove headband from hood.
2. Snap chin strap stud buttons into the holes
on each side of the headband, inserting from
the inside.
3. Align holes on chin strap to stud buttons and
pull downward to lock in place (see Figure 7).
4. Place headband on your head. Adjust chin
strap length with the plastic slide.
5. Remove headband from your head and rein-
stall in respirator hood.
If Using MB1 or GRHOL1 Optional
Outer Lens:
1. Remove protective plastic film from the lens
that is sewn into the GR50 respirator.
2. Remove protective plastic film from both sides
of the protective outer lens.
3. Engage the 4 male snaps of the outer lens to
the corresponding 4 female snaps of the inner
lens (see Figure 8).
4. When outer lens becomes scratched, replace
with another lens. Refer to replacement parts
and accessories.
If Using Optional 20LC or 7714
Lens Covers:
1. If desired, apply optional adhesive-backed
lens covers designed to protect the respira-
tor’s plastic lens. Apply 2-3 lenses at a time.
2. When lens becomes soiled, remove by pulling
tab at edge of lens cover to clear your vision.
Figure 8
Figure 6
Ratchet Knob
Headband
Figure 7
