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Specifications
Part 1 General
1.01 Summary
A. Counter fire doors excluding design, construction and preparation
of openings; finish or field painting; access panels; electrical
wiring, conduit, wire, fuses and disconnect switches.
1.02 Quality Assurance
A. Certification: Counter fire doors are labeled or certified by Warnock Hersey,
Underwriters Laboratories or Factory Mutual for the hourly rating,
wall construction and size allowed by the listing.
Part 2 Products
2.01 Materials
A. Manufacturer: R & S Manufacturing, model L ___ Model SL ___ (for stainless)
B. Mounting: Face of wall or between-jamb
C. Operation: Push-up to 12' wide and awning crank on larger sizes is standard
(awning crank should be considered when doors are to be operated
over a deep counter of over 7' high). Chain hoist or motor operation
are optional.
D. Automatic closing: Thermally activated by 165û fusible links, with the closing speed
regulated by a governor device operative only during automatic
closing.
E. Curtain: Interlocking type 18 flat slats are roll formed from (galvanized
steel) (stainless steel - 12' max. width) coil. Gage of slats
is as required by the listing. Endlocks are riveted to slats to
maintain curtain alignment. Bottom of curtain is reinforced by
a (single angle) (tubular) footpiece of material matching slats.
F. Guides: Box shape guides are formed from (steel) (stainless steel). Sizes
of guides are as required by the listing.
G. Brackets: Steel plate brackets are bolted to guides to support curtain and
barrel and provide mounting for hood.
H. Barrel: Steel pipe houses torsion spring assembly and supports curtain
with a maximum defection of .03 inch per foot of width. Torsion
springs are mounted on a continuous cold rolled steel shaft, adjustable
by a tension wheel outside one bracket.
I. Hood: Formed from 24 gage (galvanized steel) (stainless steel) sheet,
reinforced with tip and bottom flanges to limit deflection. A
thermally released integral flame baffle is provided when required
by the listing.
J. Locking: Slidebolt locks on single angle footpiece and cylinder lock on
tubular footpiece.
2.02 Finish
A. Galvanized steel slats and hoods are pre-finished with a baked
on grey polyester primer before forming. Steel footpiece, guides
and brackets receive one coat of rust inhibiting grey primer.
Exposed stainless steel provided with #4 finish.
Part 3 Execution
3.01 Installation
A. Counter fire doors are to be installed by a R & S authorized representative
in accordance with R & S installation instructions and NFPA-80.
3.02 Testing
A. Counter fire doors are to be drop tested and witnessed for proper
operation and full closure after installation.
3.03 Schedules
A. NFPA-80 and model code groups mandate annual inspection and testing
of fire doors to check for proper operation and full closure. |
