MSA Abrasi-Blast Series Скачать руководство пользователя страница 10

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TAL 201 (L) Rev. 1 - 818366

heats of reaction with sorbent mate-
rials in the canister.

Do not use near flame or hot metal,
because hood material may burn.
The hood material is classified as
self-extinguishing as required by
Federal Standard 191, Method 5910.

Do not contact organic-based sol-
vents which may attack the hood
material, air-supply hose or other
plastic components. A partial list of
such solvents is as follows:

* Benzene
* Methyl Ethyl Ketone (MEK)
* Ethylene Dibromide
* Tetrahydrofuran (THF)
* Ethyl Acrylate
* Acetonitrile
* Isobutyl Amine
* Petroleum-Based Solvents

Return to a safe atmosphere and
discard the respirator immediately
if discoloration, crazing, blistering,
cracking or other deterioration of
the hood material, air-supply hose
or other plastic components is
observed. Failure to follow this pre-
caution can result in serious per-
sonal injury or death.

Changing Cover Lenses
The outer cover lens should be re-
moved when it gets dirty or scratched.
To change the cover lens, grasp one
of the pull-tabs on the corners of the
lens and pull straight out. The last pro-
tective lens in the cartridge has no
pull-tab. It is to be kept over the pri-
mary lens to protect its surface from
abrasive materials.

To install a protective lens
cartridge:
1. Select the proper cover lens for

the job. (Use the chart below as a
general guide to choose the car-
tridge.) A thinner cover lens may
not give satisfactory service life
because heavy abrasive may wear
holes in the lens.

a. To open the lens housing door,

grasp the top corner of the
plastic door and pull it away
from the hood.

b. Open the package of protec-

tive lens cartridges.

c. Insert the lens cartridge into the

lens housing. The cartridge can
be installed so that the pull-
tabs are either at the top or the
bottom of the lens housing.

Note: Be sure the 2 pull-tabs are not
caught in the lens door opening.

d. Close the lens housing door to

force the lens cartridge into
place. Pull on the door without
flexing the latch to be sure the
door is secured.

Select the proper cover lens for the
job. A thinner lens may not last
long, because heavy abrasives may
cause cracks in the lens.

Do not remove a lens cartridge dur-
ing abrasive work. The primary lens
may be polycarbonate and will
scratch easily. If the primary lens is
damaged, the entire lens housing
assembly must be replaced.

Do not remove the facepiece in a
contaminated area to replace the
lens cartridge. The contaminant will
remain in the surrounding air after
abrasive blasting. Return to a safe
atmosphere before removing the
respirator. Failure to observe this
precaution can cause inhalation of
the contaminant with resultant seri-
ous respiratory injury or death.

Adjusting Air Flow on Adjustable
Valve-Connectors
1. Push in on the adjusting knob,

then turn the knob.

2. Turn the knob fully clockwise (up)

for minimum air flow.

Using the Respirator

Lens

Type

Type of Service

.090”

untempered

Medium abrasive
blasting

.090”