MSA FireHawk M7XT Fonctionnement/Entretien page 24

URC (UNIVERSAL RESCUE CONNECTION) ASSEMBLY
All NFPA 1981, 2013 Edition approved air masks are equipped
with a URC Assembly (Universal Rescue Connection) fitting.
The URC Assembly is a male Quick-Fill inlet for use by Rapid
Intervention Crews for emergency filling operations. The sys-
tem also includes an automatically resetting pressure relief
valve. The air mask can also be equipped with a shoulder
mounted Quick-Fill System. For additional information on
using the Quick-Fill System, refer to the Quick-Fill System sec-
tion of the manual.
The URC Assembly may be used for transfill operations as
described in this manual. Only qualified, trained personal
Standard Operating Procedures should be developed for use
of the URC Assembly.
PRECAUTIONS FOR USING THE URC ASSEMBLY
1. The URC Assembly can only be used to fill approved air
mask cylinders.
2. The URC Assembly is not to be used as a "Buddy Breather"
such that two users are sharing the air supplied by one air
mask cylinder simultaneously doing so will result in a non-
approved NIOSH configuration.
3. The user is responsible for the air supply, which must meet
the requirements of Compressed Gas Association
Specification ANSI/G-7.1, Quality Verification Level (Grade)
D Gaseous Air or better, with a moisture dew point of not
greater than -65°F (24ppm water vapor, normal). In fire ser-
vice applications, MSA recommends breathing air quality
in accordance with NFPA 1989. Pressures at the inlet of the
Quick-Fill hose must not exceed that of the air mask (2216
psi or 4500 psi).
4. The user also is responsible for connecting the Quick-Fill
hose to an appropriate secondary air supply.
5. The cylinder must be inspected for damage before
charging.
6. If filling cylinders in fresh air using the URC Assembly top-
ping off the cylinder is recommended after the cylinder
has cooled from initial fill. Topping off a cylinder after it
has cooled will ensure proper service time.
• DO NOT use the URC Assembly as a "Buddy Breather"
such that two users are sharing the air supplied by one
approved air mask cylinder simultaneously; doing so will
result in a non-approved NIOSH configuration.
• The URC Assembly must be used by trained Rapid
Intervention Crews only using procedures developed for
rapid intervention.
• DO NOT lubricate the URC Assembly fittings. Do not
permit oil, grease, or other contaminants to come in
contact with the quick-fill fittings.
MSA 314 (L) Rev. 2 - 10128861
AUDI-LARM ALARM WITH URC ASSEMBLY
WARNING
• The hose assemblies and fittings are designed to be
used with Quality Verification Level (Grade) D or better
air as defined by ANSI/CGA G-7.1.TRANSFILLING AIR
FROM A SECONDARY AIR SUPPLY. In fire service applica-
tions, MSA recommends breathing air quality in accor-
dance with NFPA 1989.
Misuse can result in serious injury or death.
NOTE: The URC Assembly may be used for transfill operations as
described in this manual. Standard operating procedures should
be developed for use of the URC Assembly.
The URC Assembly must be used only by qualified, trained
personnel who have carefully read and understood these
instructions, cautions, and warnings. NIOSH approvals of SCBA
from MSA are maintained while transfilling air only if
appropriate hose assemblies from MSA are used. URC Assembly
or hose assemblies and fittings are rated for a maximum
working pressure of 4500 psi. NIOSH approval is maintained
only when using the following hose assemblies: 485331,
802687, 802688, 802689, 802690, and 48332, for filling
cylinders in IDLH atmospheres.
FILLING INSTRUCTIONS FOR USING THE URC ASSEMBLY
A secondary air supply stores compressed breathing air until
needed to refill air mask air cylinders. When transfilling, the
secondary air supply pressure must be greater than air mask
cylinder pressure. Examples of air supplies include: cascade air
cylinder refilling systems; high pressure compressor systems
with a fixed reservoir; or a portable air system such as the
RescueAire™ System.
DO NOT connect a high pressure air mask to a secondary air
supply with a pressure greater than 4500 psi. The high pres-
sure air mask is rated for a maximum working pressure of
4500 psi. Misuse can result in serious injury or death.
NOTE: Rapid Intervention Crews should use a separate air sup-
ply such as MSA's RescueAire portable air supply system to fill
the air mask in an IDLH atmosphere.
1. Connect the quick-fill hose to the secondary air supply.
a. Turn the air supply on.
If there are leaks from either female fitting, or along the
hose, depressurize the hose and correct the problem. Such
leakage can result in increased fill time.
2. Attach the Quick-Fill hose to the URC Assembly.
a. Remove the rubber dust cap from the male inlet fitting
on the URC Assembly. Be sure that the cylinder valve is
fully opened.
b. Remove the rubber dust cap from the female fitting on
the Quick-Fill hose.
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WARNING
CAUTION