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General
Walk-in coolers and freezers are assembled using prefabricated
modular panels. These panels consist of metal clad expanded
polystyrene or urethane (polyisocyanurate) insulation. They are
designed for fast and easy field assembly with convenient
disassembly for relocation or enlargement.
Panels are available in 4" and 6" thickness.
Full width panels are 47" wide, with narrower panels in various
widths as required. Enclosure prices are based on 11 3/4"
increments, but actual dimensions can be any size to accommodate
customer requirements. One piece panels are available in lengths
up to 32 feet.
Panel Fasteners
The wall panels are joined together by cam-locks embedded in
the panel edges. These cam-locks consist of a locking
are mounted on a rotating cam anchored in the tongue edge and
a steel pin anchored in the groove edge. By rotating the
locking arm with a hex wrench, the arm engages over the
pin, and the rotation of the cam draws the panels tightly together.
The cam-locks are rotated from inside the walk-in through access
ports which are subsequently sealed with vinyl snap-in caps. |
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Lamination
The panels consist of formed metal skins laminated to the
insulation under pressure with a structural adhesive.
Insulation is either expanded polystyrene or urethane (polyisocyanurate).
This process is carefully monitored to assure a high-quality
structural bond that will withstand a wide range of temperature
and humidity conditions.
Tongue and Groove
All panels have tongue and groove edges to facilitate assembly
and provide a tight, well insulated panel joint. No wood
framing is used.
Panel Gaskets
Flexible vinyl gaskets are permanently bonded on the tongue side
of all panels on both the interior and exterior to form a tight
seal between panels. These gaskets are resistant to water,
detergent, oil, fats, and sunlight.
 Floor
Panels
Floor panels are constructed with a 16 gauge galvanized steel or
an optional .080 aluminum interior skin. This reinforced floor
panel is designed to withstand uniformly distributed loads up to
600 pounds per square foot. When mobile equipment is used, such
as dollies and carts, additional reinforcement is required.
Aluminum tread plate or 10 gauge galvanized steel is
recommended.
Facings:
Standard Finishes include:
- 26 gauge G-90 Galvanized in smooth or stucco embossed
- White painted 26 gauge G-90 galvanized, stucco embossed
high gloss USDA approved
- .032" Aluminum, stucco embossed
- 22 gauge 304 #4 polish Stainless Steel
- 24 gauge 304 #2B Stainless Steel
Expanded
Polystyrene has a stable "K" Factor of .22 at a 40 degree mean
temperature, with corresponding "R" values of 16.7 for 4" thickness and 25
for 6" thickness. Nominal density is 1 lb. per cubic foot. Polystyrene core
material when tested in a thickness of 4" per ASTM E-84 (UL Procedure 723) has a
flame spread of less than 25 and a smoke developed of less than 450.
Urethane
(polyisocyanurate) has a "K" factor of .145 when aged for six months, with
corresponding "R" values of 27.6 for 4" thickness, and 41.4 for 6"
thickness. Nominal density is 2 lbs. per cubic foot. Note that the "R"
value for all urethane (poured, frothed or rigid sheets) declines with age, whereas
styrene remains stable. Urethane core material when tested in a thickness of 4"
per ASTM E-84 (UL Procedure 723) has a flame spread of less than 25 and a smoke developed
of less than 450.
NSF (Optional)
NSF (National Sanitation Foundation) approved enclosures, constructed with coved wall and
floor corners, are available at a slight extra charge. These enclosures will bear
the NSF seal of approval. Note that galvanized steel is no longer an accepted finish
for floors in NSF approved enclosures.
Doors
The standard door unit consists of a hinged door, flush mounted in a 47" wide panel
with a clear opening of 34" x 78". A vapor proof light fixture, light
switch with pilot light, and 2" dial thermometer are mounted in the frame. The
light fixture and switch are prewired. Freezer doors have anti-sweat heater in both
the door leaf and the frame.
A replaceable magnetic gasket seals the door at the
top and the two sides. The bottom edge of the door is sealed with a dual neoprene
sweep.
Each door has two polished chrome hinges with a
cam-lift action. (Optional self-closing spring loaded hinges and door closers are
available.) The door latch handle is polished chrome, positive latching, with an
adjustable strike. An inside safety release handle is provided so the door can be
opened from the inside even when padlocked from the outside.
Hinged pallet doors are available in custom sized up
to 6 feet wide and 8 feet high.
Sliding doors, single or bi-part, manual or electric
operated, are available in a variety of sizes.
Installation
A complete set of drawings are supplied with each walk-in. It is important that the wall
panels are level upon installation. A clearance of 1" should be allowed between
the wall panels and existing room walls, as well as a 1" clearance for ceiling
panels.
In the interest of continued
product improvement, we reserve the right to change specifications
without notice.
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