Attic and Roof Ventilators
Industrial Paddle Fans, Ceiling Mounted Fans, Cooling Fans for High Ceilings - Philadelphia.|
Bigger than residential fans, they are different in other ways. In the picture to the right, you notice that there are only 3 blades. They are manufactured with only three because, unlike residential fans, they are operated with an exceedingly high speed.
WE GOT YOUR FANS.
.....Therefore, the weight of more than three blades would use more electricity, as well as put more stress on the motor, causing it to burn out more quickly. Unlike residential fans, decoration is not a concern. They are usually produced only in the colors black, white, or gray. As you can see in the photograph, it is simplified to the bare necessities: a long down-rod, 3 large blades, and an electric motor.
All fans are made up of the same basic parts:
electric motor~ in the center of the fan; the control center
for all of the other parts. Gets
its energy source from a few different alternatives, differ in noise
levels, and vary in sizes and strength (see motor size).
blade irons~ also known as “blade brackets,” “blade arms,”
“blade holders,” or “flanges.” These are the metal supports that hold the
blades to the motor.
pull chain~ the original control for fans. It’s very basic,
controlling both the fan speed and the light fixtures. Usually a bead chain or
a cloth cord, the pull chain generally turns on the fan and goes directly to the
“high” position. After another pull, the fan slows down. It continues this
process until the fan turns back off. It usually cycles through three speeds -
high, medium, and low; but sometimes it can have from one to four speed(s).
variable-speed control~ a dial is mounted on the fan. Similar to a dimmer switch, this dial can be rotated and the blades speed up or slow down depending on which way you turn the dial, as opposed to having set speeds (high, medium, low…). This can be installed in 3 different ways: ס the dial can power the entire fan » speed, off/on, and light fixtures. ס the dial is accompanied by a pull chain » pull chain controls whether it’s off or on while the dial controls the speed. Light fixtures can be controlled by either of them. ס dial and pull chain; pull chain has two modes » ¹ "high power,” ² “variable.” When the fan is in the “variable” mode, the dial can then control the range of speed.
wireless remote control~
included with new luxury fans. Like any other remote control, it sends
frequencies that the fan recognizes and it operates accordingly. This can also
be purchased separately and installed into your current fan.
Many ceiling fans are
available with light fixtures.
Types of Ceiling Fans
“hugger" or a “low
used for low ceilings,
goes hand-in-hand with the
It’s installed just low enough that the blades don’t scrap the ceiling. Cannot
be used in a room with vaulted ceilings.
Along with different fans come different motors...
“stack motor” ~ highly recommended due to its energy efficiency and its powerful drive. It uses a basic stator (see vocab), a ‘squirrel cage’ rotor, and a standard flywheel.
~ least expensive to produce, yet they are the most likely to break and are the
noisiest. However, they have improved over the years and now standard for
today’s fans. There are a few types of these motors:
the “Pancake motor”; used in direct-drive fans. Designed with a shell that
circles around an immobile central piece. The blades are connected to this
shell. (see direct-drive fans.)
best of the direct-drive motors; generally used in high-quality fans. They
are developed with an open “skeletal” design, which enables maximum ventilation
resulting in an extensive duration of the fan.
FOR YOUR SAFETY: When installing a fan, it should be hung minimally seven feet off of the ground to decrease risk of injury. However, depending on the activities that might occur in the room, seven feet may not be high enough. For example, carrying tall objects or high reaching can either damage the fan and/or cause injury.
“WHY DOES MY FAN WOBBLE ?”: When a fan wobbles, it is irrelevant to the way the fan was mounted or the ceiling that the fan is mounted on. Causes for wobbling include warped blades, bent blade irons, blades or blade irons not being screwed on straight, or blades being different weights, shapes, or sizes. Though a “balancing kit” is included with the purchase of a ceiling fan, the kit is only capable of evening the weights of the blades as opposed to fixing the other problems that cause this.“DOES WOBBLING CAUSE MY FAN TO FALL ?”: No, your fan will not fall from wobbling. When installed, a fan uses clevis pins*, which are locked with cotter pins*, to secure the fan. On the other hand, light kits may loosen and possibly fall. Just make sure to follow all directions carefully and completely. Also, use the appropriate mounting screws and fasten them firmly. Light fixtures should be correctly put together and securely fastened. It’s also important to sporadically check its security, for instance making sure that it’s tight, undamaged, etc.
Torque ~ steady rotating force
Stator ~ stationary part of the rotor system; may act as a field magnet (or electromagnet) interacting with the armature to create motion; may act as the armature in some cases if positioned (manufactured?) in contact with the moving field coils¤ on the rotor
¤ aka the field winding; it energizes the electromagnet, aka the stator.
Armature ~ generally refers to one of the two principle electrical components of a motor
Clevis pin∆ ~ a type of fastener that will allow rotation of the connected parts on the axis of the pin; consists of a head, shank, and hole; secure and less apt to come loose during vibration
Cotter pin∩ ~ a metal fastener with two ‘tines’ that are bent during installation used to fasten metal together, like a staple or rivet; typically made of thick wire with a half-circular cross section; inserted through the hole of the clevis pin to keep it in place after the assembly of the parts to be fastened
Balance ~ “auto-balancing fan”; uses a flexible disc that ensures fan blades operate smoothly and evenly with each rotation – even when weighted, tweaked, or warped
Safety ~ typically weigh between 15 and 50 lbs; a fan in motion exerts many additional stresses on the object in which it is hung, causing an improper junction box ∂ to fail; all ceiling fans must be supported by junction box to prevent this; sometimes homeowners replace a light fixture on a fan without upgrading to a proper junction box.
∂ An electrical junction box is a container for electrical junctions, usually intended to conceal them from sight and to some extent to eliminate tampering. It can be a small metal or plastic container, such as those intended to form part of wiring, junction boxes form an integral part of a circuit protection system. A fan must have a proper electric junction box when installed. A typical fan weighs between 15 to 50 lbs, and though a junction box can support a fan that’s still, when in motion it puts stress on the box, therefore an improper junction box can cause damage and possible injuries