System Description And Use - Sundstrom SR 500 Mode D'emploi

18. Helmet SR 580 / Welding shield
SR 584
19. Full face mask SR 200, PC visor
20. Full face mask SR 200, glass visor
21. Half mask SR 900, Small
21. Half mask SR 900, Medium
21. Half mask SR 900, Large
22. Hose, SR 951
23. Twin hose, SR 952
24. Flow meter SR 356
25. Splash cover
26. Harness SR 522
27. Storage bag SR 505
28. Gasket
29. Pre-filter holder SR 512
30. Particulate filter P100/HE, SR 510c
31. Filter adapter SR 511c
32a. Pre-filter holder
32b. Pre-filter holder SR 5153
33. Particulate filter P100/HE, SR 710c
34. Chemical cartridge SR 532a,c
35. Chemical cartridge SR 533b,c
36. Plug kit
Cleaning Wipes SR 5226
a. Organic Vapors (OV), Acid gases.
b. Acid gases, Ammonia, and certain amines.
c. Two cartrdiges are required for operation of the
SR 500 Fan Unit.

4. System Description and Use

4.1 SR 500 Fan Unit System
When selecting an air-purifying respirator the following
are some of the factors that must be taken into
account:
• Possible occurrence of explosive atmosphere.
• Types of pollutants.
• Concentrations.
• Work intensity.
• Protection requirements in addition to respiratory
protective device.
The risk analysis should be carried by a person who
has suitable training and experience in the area. See
also Sections 2.1 NIOSH Cautions and Limitations and
2.2 Warnings/limitations.
IMPORTANT: THIS RESPIRATOR IS INTENDED TO
BE USED ONLY IN CONJUNCTION WITH AN
ORGANIZED RESPIRATORY PROTECTION
PROGRAM WHICH COMPLIES WITH THE
REQUIREMENTS OF "PRACTICES FOR RESPIRA-
TORY PROTECTION", Z88.2-2015 AVAILABLE
FROM AMERICAN NATIONAL STANDARDS
INSTITUTE (ANSI), 11 WEST 42ND STREET, NEW
YORK, N.Y. 10036, OR WITH THE REQUIREMENTS
OF OSHA STANDARD 29 CFR 1910.134 AVAILABLE
FROM THE US DEPARTMENT OF LABOR,
OCCUPATIONAL SAFETY AND HEALTH ADMINIS-
TRATION AND/OR OTHER PERTINENT NATIONAL-
LY RECOGNIZED STANDARDS.
The SR 500 Fan Unit is a belt-mounted blower/filtration
unit. To form a complete powered air purifying (PAPR)
respirator system, the SR 500 must be combined with
the appropriate filters or combination filter/cartridges,
battery pack and respirator facepiece or headgear.
The SR 500 PAPR system is intended to provide
respiratory protection against certain particulates,
H06-8321
organic vapors, acid gases, other inorganic gases. The
H01-1221
SR 500 is NIOSH Loose and Tight Fit approved with
H01-1321
certain components. Refer to NIOSH Approval Label
H01-3021
for list of approved components.
H01-3121
H01-3221
The SR 500 PAPR can be used as an alternative to
T01-3010
air-purifying filter/cartridge respirator in all situations for
R01-3013
which these are recommended. This applies
R03-0346
particularly to work that is hard, warm or of long-dura-
T06-0114
tion. This respirator can be used for protection against
T06-0116
a mixture of contaminants that are present simultan-
T06-0102
eously or alternately against one contaminant then
R06-0107
another (using the same filters/canisters) if the mixture
R06-0106
meets the following conditions:
H02-1321
• The filter/cartrige must be approved for all
R06-0105
contaminants present.
R01-0605
• Particulates (dusts, mists, fumes, asbestos,
R01-0604
radionuclides) can be mixed with any other
H02-1521
particulate or any gas or vapor for which the cartrige
H02-7121
is approved.
H02-7221
• Contaminants present simultaneously must be
R06-0703
below IDLH levels for the specific contaminants. If
H09-0401
any one contaminant in the mixture exceeds the
IDLH concentration then the entire mixture must be
treated as IDLH and the respirator cannot be used
(except for escape from particulates with appropria-
te filter).
Exposure Limits for Mixtures
The American Conference of Governmental Industrial
Hygienists (ACGIH) publishes the following information
to determine the Threshold Limit Value (TLV) of a
mixture.
First determine the total concentration of the chemical
mixture (CMixture) from the individual contaminant
concentrations (C1, C2, C3, . . . ) using the following
formula: CMixture=C1+C2+ C3+ . . .
The TLV of the mixture is found by using the following
formula where T1, T2, T3, . . . are the individual
contaminant TLVs and C1, C2, C3, . . . are the
individual contaminant concentrations:
Only use these equations if the contaminants present
are actually mixed. Some substances do not mix and
may be present separately, for example, in pockets or
at different levels. In that case, the lowest TLV of the
substances present must be used to determine the
appropriate respirator category for protection against
all contaminants present.
IMPORTANT: If you feel uncertain about the
selection and care of the equipment, consult your
work supervisor or get in touch with Sundström
Technical Support.
RESPIRATOR USE LIMITATIONS
The SR 500 system must not be worn:
• In Oxygen deficient atmospheres
• Where contaminant concentration is unknown
• Where contaminant concentration is at or above
immediately dangerous to life or health (IDLH)
• Half mask: where the contaminant concentration is
50 times the exposure limit.
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