 SPECIFICATIONS
CITY-GATES SPECS
WORK EXCLUDED - Preparation of openings,
structural supports unless specified (refer to option
below), removable soffits or access panels, trim, field
painting. On motor
operated doors, exclude wire, wiring, or disconnect
switches.
OPERATION - to be (Push-up, with
handles) (chain and reduction gears; maximum pull of
35 lbs.) (Chain Hoist with reduction gears and removable
arm) (Motor
- refer to options below).
CURTAIN - The curtain is constructed
from 22 gauge G-60/G-90 galvanized steel or a baked-on
polyester coat in grey, beige, or white. Other colors,
gauges and material (stainless steel/aluminum) are available
- please consult factory .The curtain features .062
diameter openings on .094 staggered centers allowing
air and light to pass through without sacrificing security.
COUNTERBALANCE ASSEMBLY - to consist
of tempered helical torsion springs with a 25% safety
factor, mounted on shaped cast anchors, supported by
a continuous solid torsion rod. This mechanism to be
permanently lubricated and enclosed within a steel pipe
shaft. Deflection of shaft not to exceed .03" per
ln. ft. The spring tension adjusting wheel is to be
readily accessible from outside the bracket plate.
SPRING COUNTERBALANCE - Option for
band type springs for smaller doors shall consist of
flat blue steel wrapped around a 2" or 3"
pipe shaft and mounted into a galvanized steel spring
box.
BRACKETS - to be not less than 1/4"
thick steel plate, to contain sealed self-aligning ball
bearings for suspension of the counterbalance assembly.
Gears to be high grade iron, cast from machine-cut patterns.
GUIDES -to be of extruded aluminum with retainers for
end links. To be fitted with wool pile inserts to eliminate
metal-to-metal contact.
HOODS - to be of (aluminum) (galvanized
steel) (stainless steel), minimum #24 Gauge, stiffened
top and bottom. Omit if coil to be above ceiling.
LOCKING PROVISION FOR PADLOCKS -
to be (slide bolts on push-up grilles) (chain holder
on chain grilles) (slide bolts on grilles) (self-locking
gearing on motor
grills).
FINISH -on (aluminum) (stainless steel) to be mill finish.
Steel surfaces to be one shop coat of metal primer except
on galvanized surfaces.
SPECIFICATIONS FOR OPTIONS
STRUCTURAL STEEL TUBE SUPPORTS -
In standard type weight with floor seats to be furnished
by grille mfr., sized as required, pre-drilled for guides
and brackets.
MOTOR OPERATORS
- to be integral assemblies with Nema rated electrical
components, Model (MO) (H), consisting of high torque
motor,
braking system, self-locking gearing, (Model MO gear
reducer with worm gears in oil bath) (Model H chain
sprocket gearing) emergency chain operator with disconnect
and electrical safely interlock, internal reversing
magnetic controller, pushbutton station with open-close-stop,
internal pre-wiring. Motor
to be removable without affecting chain operation or
limit switch setting.
SPECIAL ELECTRICAL CONTROLS - to
include (flush-mounted key switches) (additional push-button
stations) (weatherproof switches).
SAFETY EDGE BOTTOM BARS - to be furnished
on motor
operated, which, upon contact with an object, is to
stop (or reverse) the downward travel.
REMOVABLE SOFFITS - (for coils above
hung ceilings) to be supplied, if indicated to be by
grille manufacturer, in (galvanized steel) (aluminum)
(stainless steel).
MORTISE CYLINDER LOCK - to be provided,
engaging at both ends (concealed within bottom bar)
(curtain type waist-high or as otherwise indicated)
(operable one side) (operable both sides).
FINISH - on aluminum (curtain) (bottom
bar) (guides) to be (clear anodized) (Duranodic bronze).
On stainless steel (curtain) (bottom bar) to be #4 satin
finish. (Hood, where required, to match).
EMERGENCY-OPEN RELEASE - to be provided
for flush mounting. Activating handle will cause grille
to open for emergency egress. |
