axial fans operate at 3450 rpm to deliver maximum air performance
in low static pressure applications.
Diameters range from 12" to 28", with horsepower ranging
from .75 to 12.5. Fan housings are constructed of heavy gauge galvanized
steel and equipped with safety screens to meet OSHA standards.
Single phase units incorporate a permanent split capacitor start
motor for the best single phase motor reliability.
Centrifugal Fans are produced in 1750 rpm models for higher static
pressure applications and 3500 rpm models for very high static pressure
uses and offer quiet, dependable performance. These fans are available
in sizes ranging from 15" to 36" with horsepower from
3 to 100. Most units are available for single or three- phase operation.
Pre-wired for heater installa¬tion, each fan con¬tains a
built-in magnetic starter control for overload protection. As an
option, humidistat controls are available. Dynamically and statically
balanced wire welded fan wheels are standard because of proven performance.
designed to work with the Axial or Centrifugal Fans, create a complete
In-line Centrifugal Fan
Caldwell's exclusive In-Line Centrifugal Fans offer a compact design.
A specially engineered air baffle is built into every In-Line Centrifugal
Fan to ensure proper air flow and to maximize air performance.
For medium static pressure applications, these fans operate at 3450
rpm. These fans are available in sizes ranging from 14" to
28" and with horsepower from 1 to 15. Available in single or
three-phase units, these fans can be used in most general storage
Borne drying systems, Caldwell units ship separate. The housings
are constructed from galvanized steel for durability and include
a screen guard for safety.
The Centrifugal Heater has an enlarged service door for easier accessibility
and a larger control box now located on top of the heater, adding
more room. Heaters are available in natural gas, vapor propane and
liquid propane units. Centrifugal fans can be equipped with either
a ODP or TEFC motor. In-line fans (ODP), axial fan (TEAO).
In Bin or Flat Storage Aeration Systems
Caldwell fans are available in a variety of models and sizes to
fit almost any application or system. With details such as complete
galvanized housings, energy efficient motors and built-in safety
standards, Caldwell fans provide maximum performance and dependable
service year after year.
Most fans come equipped with leveling feet and lifting hooks for
ease of installation. Fans are available to be wired with optional
230, 460 or 575 volt controls.
Caldwell Systems are custom designed for each specific application.
Choose from either Panel Grate Systems or Flush Floor Systems with
the configuration of your choice depending on your needs. Available
in a variety of sizes up to 61 wide, Caldwell can design a custom
fit to ensure proper air flow. Both systems are perforated for unrestricted
air flow. Panel Grates are available with internal I-beams and perforated
webbing for heavier loads or larger storage areas. Flush Floor Systems
have interlocking panels for smaller storage areas.
Floor supports are available in a variety of sizes to support grain
floors in heights ranging from 3" to 17" in 16 or 18 gauge
Caldwell Channellock Floor Systems are constructed with strength
in mind. U sing galvanized steel, each floor panel is 7" wide
with deep corrugation for additional strength. The interlocking
panels are perforated from .094" to .050" to ensure proper
aeration and drying and durable support for material. The .094 is
available in 20 or 18 gauge. An arch built into the panel causes
the sections to lock even tighter when grain is loaded. Designed
for all standard bin diameters and for grain depths up to 100'.