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Supply air must be filtered and regulated.
See Table in column 2, page 3, for re-
quired air pressure for various hose
lengths.
Note
It is required that a Devilbiss
breathable air supply hose is used
and specifically identified for
breathing air, such as, as DeVil-
biss 160001 (MPV-530) or
160016 (MPV-550) breathable
air hose. Each user should have
their own visor assembly.
Wearing Instructions
Risk of illness. Avoid breathing
contaminated air. Read and fol-
low the instructions below be-
fore entering a contaminated
area.
1 .
Connect the air supply hose to the
outlet source of Grade D air. See
illustration on page 6. Do not turn on
the air supply.
Note
Ensure that the supply hose is
long enough to allow the opera-
tor to enter and leave the con-
taminated area without discon-
necting or removing the visor.
2 .
Check the waistbelt and respirator
assemblies ensuring that all parts are
in good condition. Replace if dam-
aged.
3 .
Attach and adjust the waistbelt as-
sembly ensuring that the supply air
inlet is pointing down.
4.
Connect the air supply hose to the
waistbelt inlet.
5 .
Connect the respirator feed tube to
the female quick disconnect on top of
the filter assembly.
6 .
Place the browguard visor assembly
on head; and with the visor in the
open position, adjust the crown strap
and tension knobs to obtain a secure
fit. Ensure that the feed tube is not
twisted or kinked and will not interfere
with normal movements. Make sure
the ears are not tucked inside the
faceseal cassette. Do not place ears
inside faceseal cassette.
7.
Turn on the air supply and check that
air is flowing freely to the inside of
the visor.
8.
Adjust the inlet air pressure to en-
sure that the supply pressure at the
inlet of the supply hose is within the
guidelines of the following table:
Hose
Min. Press. Min. Press.
Size
Hose
One Hose
Two Hose
I.D.
Length
Length
Lengths
Inches
Feet
PSI
5/16
30
45
5/16
50
52
9 .
Before entering the contaminated
area, the visor must be pulled down
so the fabric skirt is touching the
face all the way around and the ten-
sion knobs are adjusted so the
visor is locked in this position.
Risk of diminished air flow.
When adjusting air pressure to
other units, ensure that the pres-
sure to the waistbelt assembly
at the point of attachment is
maintained at a minimum of
approved pressure.
MAINTENANCE
Inspection
1 .
Inspect equipment before each use
for damaged parts. Pay particular
attention to the hose and visor feed
tube - replace if there is any sign of
abrasion, cuts, cracks, kinks, or dis-
tortion.
2 .
Replace visor covers as necessary to
ensure clear vision. Do not spray
paint or use chemicals without a
protective visor cover 165018 (MPV-
44) in place.
3 .
Check for air leaks whenever pres-
sure is first applied. Check and make
sure the hose connections are
secure and that the hoses and fit-
tings are in good condition. Replace
if damaged.
4.
Check before each use that the
fabric skirt is free from tears, rips,
distortion, dirt, contaminants, and
discoloration and is properly fitted.
5 .
Check the waistbelt periodically for
general wear.
6 .
Replace the activated carbon car-
tridge when the white indicator pad
becomes pink or if any odors are
experienced during wearing.
Cleaning
1.
Regularly clean and/or disinfect the
visor and headband assemblies. DO
NOT USE PAINT SOLVENTS. Sol-
vents will attack the plastic lens and
Max.
render it unusable.
Press.
PSI
PSI
Recommended solutions:
55
100
60
100
a.
Cleaning: 1/2 teaspoon (3 ml) of liq-
uid detergent to 1 quart (1 liter) of
warm water, mix thoroughly.
b.
Disinfectant: 1/2 teaspoon (3 ml) of
bleach to 1 quart (1 liter) of warm
water, mix thoroughly.
Method for cleaning and/or disinfecting:
Use a lint free cloth dampened with the
solution and wipe the inside and outside of
the visor and headband assemblies. Re-
peat with a clean, lint free cloth dampened
with clean, lukewarm water. Allow to dry
naturally. Maximum ambient temperature
104° F. (40°C).
REPLACEMENT OF PARTS
Use only DeVilbiss replacement
components. Use of non-DeVil-
biss parts may cause equipment
malfunction and create an un-
safe conditon for the end user,
as well as void the NIOSH ap-
proval.
To replace the activated carbon filter:
1 .
Turn off air supply to the waistbelt
and remove air suppy hose.
2 .
Unscrew the two screws at the top of
the waistbelt housing and one screw
on the front.
3 .
Tilt the regulator forward to release
the black locating lug from the slot
in the front of the lower half of the
waistbelt housing.
4 .
Remove the old carbon cartridge and
fit a new replacement.
5 .
Relocate the black lug on the regula-
tor into the slot on the lower half of
the waistbelt housing.
6.
Align regulator to bottom housing
and tighten the three screws.
7 .
Replace air supply hose and check
that there are no air leaks.
SB-25-050-A
PAGE 3
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