User's Manual

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URC ASSEMBLY OPERATION

All NFPA 1981-2002 approved SCBA 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

ystem also includes an automatically resetting pressure

elief valve. The SCBA can also be equipped with a shoul-

er-mounted Quick-Fill System, unless using a 3000psi

URC Assembly, the 3000psi URC Assembly cannot be

used with Quick-Fill System.

The URC Assembly is not to be used as a "Buddy

Breather" such that two (2) users are sharing the air

supplied by one (1) approved SCBA cylinder simulta-

neously; doing so will void NIOSH approval. Failure to

follow the above warnings may result in serious per-

sonal injury or death.

The URC Assembly must be used by trained Rapid

Intervention Crews only using procedures developed

for rapid intervention. Improper use can result in seri-

ous personal injury or death.

Note:

The URC Assembly may be used for transfill opera-

tions as described in this manual. Standard operating pro-

cedures should be developed for use of the URC

Assembly or Quick-Fill System.

An air mask using the 3000psig URC Assembly with-

out Quick-Fill System can receive (be a Receiver)

cylinder pressure through the 3000psig URC

Assembly. Do not use air mask with Quick-Fill System

and 3000psig URC Assembly on the same air mask.

Air mask with Quick-Fill System and 3000psig URC

Assembly on same air mask will not allow the relief

valve in the 3000psig URC Assembly to open as

designed. Failure to follow the above war

nings may

result in serious personal injury or death.

The URC Assembly must be used only by qualified,

trained personnel who have carefully read and understood

these instr

uctions, cautions, and warnings. NIOSH

approvals of SCBA from MSA are maintained while trans-

filling air ONLY if appropriate Quick-Fill hose assemblies

from MSA are used. URC Assembly or Quick-Fill hose

assemblies and fittings ar

e rated for a maximum working

pressure of 4500psig.

NIOSH appr

oval is maintained only when using the follow-

ing hose assemblies:

485331, 802687, 802688, 802689, 802690, and 48332, for

filling cylinders in IDLH atmospheres.

Do not Transfill (be a Donor) using a 3000psi URC

Assembly. The 3000psi URC Assembly has a check

valve that does not allow cylinders to Transfill (be a

Donor). Using the 3000psi URC Assembly to fill cylin-

ers, the cylinder can only be filled to 2216psig. If the

ressure exceeds 2216psig a relief valve in the URC

ssembly will vent at approximately 2525psig or as

low as 2400psig. A 3000psig cylinder can only be filled

to 3000psig by using a secondary air source; the

3000psi URC Assembly cannot be used for filling a

3000psig cylinder. Failure to follow the above warnings

may result in serious personal injury or death.

For filling operations using the URC Assembly, do not

use any transfilling hose assembly or fittings other

than those supplied by MSA specifically for the URC

Assembly or Quick-Fill System. Use of any other

transfilling hose assembly, fitting, or cylinder may

result in serious personal injury or death, and will void

NIOSH approval. Failure to follow the above warning

may result in serious personal injury or death.

Do not lubricate the URC Assembly fittings. Do not

permit oil, grease, or other contaminants to come in

contact with the Quick-Fill fittings. The Quick-Fill 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 SOURCE. Failure to follow the

above warnings may result in serious personal injury

or death.

A secondary air source stores compressed breathing air

until needed to r

efill SCBA air cylinders. Secondary air

source pressure must be greater than air mask cylinder

pressure. Examples of air sources include: cascade air

cylinder r

efilling systems; high pressur

e compressor sys-

tems with a fixed reservoir; and an SCBA air cylinder

which is not installed on an SCBA.

Do not connect a High Pr

essure SCBA to a secondar

air source with a pressure greater than 4500psig. The

high pressure air mask is rated for a maximum work-

ing pr

essure of 4500psig. Failure to follow the above

warnings may result in serious personal injury or

death.

AL 507 (L) Rev. 1 - 10058881

WARNING

ARNING

WARNING