MSA FireHawk M7 Responder PAPR, Manual

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The C420 PAPR must be properly prepared for use, flow
tested, properly donned, and a negative pressure leak test
must be conducted in an area known to be free of conta-
minants before it can be used.
Before entry into a contaminated area, the maximum safe
duration of use must be estimated. The maximum safe
duration of use depends primarily on:
•
The amount and type of contamination in the air and
the capacity of the canister to absorb or neutralize
that contaminant.
• The amount of airborne particles (dust) in the atmos-
phere.
• The charge contained in the battery.
• The physiological limits of the respirator user.
The maximum expected canister life shall be predeter-
mined based on a determination of the amount of conta-
minant in the atmosphere and the capacity of the canis-
ters together with the expected air flow through the canis-
ters. An average airflow of approximately two cubic feet
per minute (2 CFM) will flow through each canister during
prolonged use.
The single use battery may be used up to eight (8) hours
under certain conditions. The rechargeable battery may
be used for up to four (4) hours under certain conditions.
Air flow must be checked as described in these instruc-
tions for maximum protection.
After four (4) hours of use, the user must leave the conta-
minated area, decontaminate if required, and check the
airflow with the Airflow Indicator (Refer to the Flow Test
with Canisters Installed section) when using the single use
battery. Thereafter, the air flow must be checked at least
every two (2) hours of use. (Refer to the In-Use Flow Test
section) After four (4) hours of use the user must leave the
contaminated area, decontaminate if required, and dis-
continue using the respirator when using the rechargeable
battery.
INSTRUCTIONS FOR USE AND CARE
6 TAL 804 (L) Rev. 0 - 10086003