Flexibility
Design
Construction
Support Wheels
Locking System
Drive System
Weatherstrip
Electrical Controls
Power Feed
Standard Options
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Swinging Paint Booth
Flexibility:
Our plenum swinging hangar door
systems are available in many
configurations to meet your specific
requirements. Having built swinging
plenum door systems over 30' tall, 85 feet
in width, with door closed wind speeds
up to 140mph and operational wind
speeds to 80mph, we are confident that
we can build a system that will meet your
requirements or your imagination.

Design:
Doors are designed using CAD and
structural engineering sotware. Door
frame structure and connection designs
are certified by an independant engineer.
Door frames are engineered using
structural steel and cold formed memebrs
per AISC and AISI codes. Structural steel
members adjacent to the air flow plenum
are designed using structural steel tubing
and steel pipe to reduce air turbulence
and drag. Standard filter size considered
is 24" x 24", however any size can be
accomodated upon request. Wind loads
are calculated using your location and
building size for the most accurate
structural loading possible. We don't
make an assumption on the wind load by
using an arbitrary standard, we check
every time.

Construction:
Door components are manufactured to
the highest standards and designed to
be completely bolt together, avoiding
costly delays due to welding inspections
and the availability of certified welders in
the field. Door components are also
designed to have as few connections as
possible, simplifying and increasing
assembly speed on the job. This lowers
the total installed cost for your door
system.

Support Wheels:
We use hard rubber solid forklift style
tires to support our swinging plenum
doors. These tires provide excellent grip
to help the door achieve high operational
wind loads (rubber to concrete=60-70%
weight to traction when dry, steel to
steel=10-20% weight to traction when
dry, depending on condition of wheel and
steel rail). Our support guide wheel hubs
are machined in house on CNC lathes
and assembled using taper roller
bearings to transmit the vertical forces
imposed by the weight of the door and
the lateral forces imposed by wind and
seismic loads. Support wheels are
supplied with grease fittings installed on
the support axles and taper bearing
adjusters. Support wheels can be
removed from the support outrigger
through the top of the wheel box, allowing
bearing/axle maintenance without having
to remove the door from the track.

Locking System:
For exterior door systems (many of
these doors have been installed behind
other doors or on the interior of a hangar)
we provide hydraulic locking pins that
automatically extend when the door is
reaches the closed position and
automatically retracts when the OPEN
command is given. A light mounted at the
control push button station indicates the
lock pin position so the operator can
verify the lock pin has fully deployed when
the door is in the closed position. Lock
pin is equipped with a safety interlock so
that door will not begin to open until the
pin lock has been fully retracted.

Drive System:
Drive motor(s) is installed onto a
mounting plate that is adjustable for chain
tension. Drive motor has a worm gear
drive gearbox and is equipped with a
motor brake that is directly mounted to
the drive motor. Chain drive features an
overload clutch to prevent damage in the
case of overloading. Overload clutch is
easily released, allowing manual
operation in the event of a power failure.
Hydraulic drive motors are used so that
there is no chance of spark producing
motor or high voltage wiring inside the
paint booth area.

Weatherstrip:
Weatherstrip is 1/8" cloth inserted epdm.
Weatherstrip meets military
specifications for durometer, UV
resistance and incidental exposure to
paint thinners. Plenum doors are
designed with double runs of
weatherstrip to ensure an air tight seal
from the paint booth to the plenum door
and to the building. Retainer bar is
fastened by zinc coated self drilling
screws every 8" for a secure seal without
oil canning of retainer bar. Retainer bar is
easily removed for replacement of
weatherstripping if it becomes
necessary.

Electrical Controls:
Door control panels are manufactured in
house using only the highest quality UL
listed components. Door control systems
utilize electromechanical relays that are
highly resistant to electrical interference
and have no programming that can
become corrupted requiring service.
Control panels are mounted on the
exterior outrigger support frame so that
the electrical controls are outside of the
paint booth area. All penetrations through
the door frame are made using rigid
conduit with seal-offs installed at the
bulkhead for hazardous location
compliance. Door control systems also
utilize solid state proximity sensors for
limiting door travel. These sensors are
water proof and have no moving parts to
wear out. Door control systems can be
supplied ranging from 12VDC to
600VAC. Variable frequency drives are
available for custom tuning or varying of
door drive speed. Variable frequency
drives come with variable speed buttons
with 3 adjustable speed settings
standard, 5 speeds as an option.

Power Feed:
Standard power feed system supplied is
a drape cord design. The drape cord is
installed near the upper hinge so that the
cord is up and out of harms way.
Seal-offs are supplied to make the power
feed a complete hazardous location
installation. Rigid conduit is pre-installed
in the door's base unit. Simply install the
vertical riser conduits where necessary
and pull your wire. Hazardous location
junction boxes and seal offs are supplied
for all conduit inside the door.

Standard options:
Timer delay with safety noisemaker
and/or strobe light, safety edge with delay
and/or auto reverse, personnel door
frames and safety interlock sensors,air
drive operating system, hydraulic drive
operating system. Door drive motors and
control panels are fully assembled, wired
and tested at our facility prior to shipping.

Please call with your custom option
requirements, we are here to create the
system that meets your needs and your
imagination.

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