Miller PAPR Manuel - Sayfa 8
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SECTION 2 − POWERED AIR-PURIFYING RESPIRATOR
This equipment helps protect the user from certain contaminants. All users must read and
understand these instructions and be trained in the proper use of this equipment before
using. Use this equipment according to all applicable health and safety standards. If you
have questions about the type of respiratory equipment required, consult your safety dir-
ector and an Industrial Hygienist.
Do not enter a hazardous area until you are sure the respirator equipment is correctly as-
sembled, working properly, and properly worn.
.
See Section 3 for information on the auto-darkening helmet assembly.
The powered air-purifying respirator (PAPR) filters contaminated air and blows it into the
welding helmet hood through a flexible connecting hose. The respirator system gener-
ates a positive air pressure to help prevent contaminants from entering the hood. The
system must include and/or be used with the equipment listed below:
D Helmet with auto-darkening lens, hood, and headgear system
D Connecting hose
D Blower assembly with filtration system (spark guard, foam prefilter, HEPA filter), and low
battery and low air flow alarms
D Belt assembly
D Air flow indicator
D Battery charger
The respirator equipment operates at temperatures from 23° to 131° F and provides air
flow of 6+ CFM (low speed) to 7.06 CFM (high speed) under normal conditions. Battery
life is reduced when the unit is used in a dirty environment. If the system air flow de-
creases to an unsafe level, an alarm will sound, the blower vibrates, and the Danger light
will flash to warn the user to immediately leave the contaminated area. Use the supplied
air flow indicator to determine if the unit is supplying adequate amounts of clean air.
2-1. Respirator Specifications
Size (Blower Assembly)
Weight
(Blower Assembly w/battery and filters)
Standard Air Filter
Air Flow
Operating Temperature
Storage Temperature
Battery Type
Battery Charging Time
Battery Life
Belt size
OM-235 936 Page 6
(PAPR)
9-1/2 x 8-1/4 x 3 in. (241 x 210 x 76 mm)
33.2 oz. (941 g)
NIOSH-approved filter assembly consisting of a spark
guard screen, foam prefilter, and particulate (HEPA)
filter.
Approved to filter particulate down to 0.3 micrometers
in size.
Low Speed: 6+ CFM (170+ LPM) minimum
High Speed: 7.06 CFM (200 LPM)
23° to 131° F (−5° to 55° C)
14° to 176° F (−10° to 80° C)
Rechargeable Lithium
About Three hours
500 charges
Run time dependent on air flow rate and filter load.
28 to 55 in. (711 to 1397 mm)