1. Clean with warm to hot water. May place in your dishwasher.

Note:

Filter screens that have not been cleaned periodically and have grease build up may require replacing. The life of a filter depends upon the cooking habits each end user has. The average life span is appoximately 5 months.

1. Check that the vent duct at the end isn't obstructed and that the end cap isn't too close to the end of the discharge pipe.

2. Check that the damper was installed correctly and the flaps operate without obstructions from pipe adapters or other objects.

1. Check that all pipe connections are properly sealed.

2. Check that the damper was installed, this will eliminate air backflow

1. Apply a non abrasive cleaner such as a soft scrub with a slightly damp sponge and rub the area in the same direction as the stainless steel's grain.

2. Use a stainless steel cleaner and follow the manufacturers instructions.

1. Apply a non abrasive cleaner such as a soft scrub with a slightly damp sponge and rub gently till clean.

2. Use a grease cleaner available from your local hardware or grocery store, follow the manufacturers instructions.

1. By wearing a rubber type glove, apply enough upward pressure from the base of your palm and turn your hand counter-clockwise. This will loosen the bulb which can then be unscrewed with your hand.

2. Remove the filter screen, you may need to remove a difuser panel under the filter. This can be done by removing a few screws and taking out the panel. This will allow access to the bulb sockets,You can now unscrew the bulb.

CAUTION: Check that the bulbs are cold to the touch and power to the hood is turned off from the circuit breaker prior to doing any service work.

1. Verify that the bulbs work in a standard lamp socket, but not in the hood.

2. Turn off the power to the range hood at the circuit breaker. Remove the bulb(s) that are not lighting up and you will see two metal brackets which hold the light socket.

3. Bend the metal brackets opposite of eachother outwards. The brackets will bow out and lower the light socket to make a complete contact with the bulb.

4. These brackets will bend quite a bit, so do not be afraid to give them a good push.

1. Try switching bulbs from a socket that works, if the bulb in the troubled socket still doesn't light try using a non-metallic implement to pull down the center contact within the socket.

1. Verify if installation is correct; the hood must be level (back to front and side to side). This will cause the grease/cleaning solution to collect at the lowest.

A range hood's performance is measured in CFM (cubic feet per minute). This is a measurement of how much air can be removed in a single minute.

1. A sone is an internationally recognized unit of loudness. Sones are a linear measure like inches. Doubling the sone value is equivalent to doubling the loudness. Typically, the sone level is measured at hood’s maximum speed level CFM; however, some newer products are also being tested for CFM levels at slow, medium and fast speeds. Please review the sone chart for more examples of sones related to every day sound.
2. Why use sones instead of decibels?
   The use of the sone as a unit of loudness is an improvement over just quoting the level in decibels and is directly proportional to loudness. Because of multiple frequency possibilities, two different 40 db sounds will not in general have the same loudness. When measuring range hood motor noise, 1 sone means "as loud as a 40dB, 1000Hz tone."

A British Thermal Unit (BTU) is the amount of heat energy needed to raise the temperature of one pound of water by one degree Fahrenheit. This is the standard measurement used to state the amount of energy that a fuel has as well as the amount of output of any heat generating device.

1. To increase air quality by removing left over cooking contaminates before they mix with the rest of the air in your home.
   1. The incidence of asthma and respiratory problems, particularly in children, has jumped 61% since 1982 — American Lung Association
   2. Indoor pollution (not limited to the cooking zone only), coupled with poor ventilation was a probable cause for high increase in respiratory problems. — Mayo Clinic
      1. Why the jump since 1982? In recent years our homes have become very efficient and air tight, particularly in the colder regions. The result is a huge reduction in the fresh air circulating through our homes. Although a range hood won't solve your home's full ventilation requirements removing cooking contaminates before they spread through your home will improve your breathing environment.
2. Examples of contaminates are as follows:
   1. Grease and Fat
      1. A sticky substance expelled by cooking greasy foods such as stir fry, pork chops, steak; anything that is seared. If not extracted immediately breathing can become more difficult and over time these pollutants can become rancid. If grease is not properly extracted from the home it can attract fungus, insects and permanently damage the interior of your kitchen.
      2. In an average home over one gallon of cooking fat and airborne particles get "dumped" into the fabric of your curtains, furnishings and carpets every year, if you do not have adequate range hood ventilation.
   2. Smoke
      1. Smoke contains sulfuric acid and carbon particles, which is an irritant to the eyes and is poisonous to house plants, pets and upholstery.
   3. Steam
      1. Vaporized water can act as a "carrier" for other cooking contaminates and may also cause moisture damage over time.
   4. Odor
      1. Odors tend to linger, are acidic and if not removed, will attach to fabric and upholstery deteriorating and fading them over time.
   5. Heat
      1. A four burner cook top can create enough heat equal to one ton of air conditioning if not removed making your home less comfortable and less energy efficient over time.

1. General Overview
   1. A range hood's performance is measured in CFM, (cubic feet per minute). This is a measurement of how much air can be removed from the kitchen in a single minute. It is important to choose a range hood that is neither over nor under powered based on your ventilation needs. The right CFM for your kitchen is determined by several factors.
      1. size and power of cook top
         1. The power of your cook top is perhaps the most important factor in determining your CFM needs. Gas cook tops are measured in BTU's (British thermal units). A general rule of thumb is you should have 1 CFM for every 100 BTU's. (Example, if you have a 60,000 BTU cook top, you should have a 600 CFM range hood.) It is also important to note that this method assumes you are using all burners on high at the same time. If this is not always the case, even a 450 CFM range hood may powerful enough depending on your cooking style.
         2. Electric cook tops generally do not create as much heat as a gas cook top. Range hoods between 450 - 715 CFM should be powerful enough to accommodate an electric cook top. Please refer to your cook top manufacturer for more CFM recommendations.
      2. cooking style (general rule of thumb)
         1. For those who are used to preparing quick meals in a relatively small kitchen should select a model with airflow of 250 - 450 CFM.
         2. A family of three to four people with a medium-sized kitchen and who cook a variety of different foods should select a model with airflow of 450 - 715 CFM.
         3. For big families, for those who love the culinary arts or for a large gathering of friends in a large kitchen cooking elaborate dishes, the hood should have airflow of 600 - 1100 CFM.
      3. length and size of duct work
         1. Zephyr recommends never exceeding 100 feet of duct run. Transitions, elbows and wall/roof caps are all factors that will add more static pressure, therefore increasing your duct run. (Example: Let's assume you have 20 feet of duct work with two 90 degree elbows and an outside wall cap. You would deduct 15 feet for each 90 degree elbow and 30 feet for the wall cap, therefore increasing your total run from 20 feet to 80 feet.) For more information please refer to the Ductwork Calculation Sheet in your installation manual.
2. Hood Size
   1. To properly determine hood size, three main factors should be considered.
      1. Depth
         1. With traditional ventilation hood's the bell of the hood should project out to the front edge of the front burners in order to properly capture cooking vapors. With newer models more design-oriented models, capture area is maybe decreased depending on innovations in technology by the manufacturer. See Elica Collection for more information.
      2. Width
         1. Whenever possible, the hood should overlap by at least three inches on each side.
      3. Height
         1. Proper mounting height is very important. If a hood is mounted too low, it may be difficult to cook and be unsafe. If a hood is mounted too high performance may be compromised. Please refer to the manual for each model for proper hood mounting heights.
3. Proper Range Hood Use
   1. When to use it?
      1. Efficient ventilation of fumes from the cook top also depends on the correct use of the product. It is normally a good idea to switch the hood on at its lowest speed when you start to cook, increasing the speed level as fumes and odors increase. When you finish cooking, turn the speed down again and keep the hood on for another 5 - 10 minutes.
   2. Cleaning
      1. Just like any appliance, a range hood must be cleaned.
         1. The hood surface should be cleaned as needed, typically once a month or more depending on cooking habits. Never use abrasive cleaning agents as they may scratch the hood surface.
         2. Filters should also be cleaned monthly or more depending on cooking habits. Filters may be placed in a dishwasher at low temperature or soaked in a sink with soapy water. Mesh filters may discolor if the dishwasher heat is too high.
         3. Charcoal/Carbon filters are disposable and should not be cleaned in a dishwasher or soaked in soapy water unless specified in the user manual.
            1. Europa Collection and Power Series carbon filters should be replaced every 4 - 6 months or sooner if extreme wear and tear is noticeable.
            2. Elica Collection charcoal filters should be replaced every 12 - 14 months or sooner if extreme wear and tear is noticeable. Elica Collection charcoal filters may also be individually washed in a dishwasher or soaked in soapy water at low heat.

1. General
   1. Zephyr Ventilation range hood performance is tested in accordance with AMCA International's standards (Air Movement and Control Association). AMCA testing methods are currently used by many range hood manufacturers, including the largest range hood manufacturer in the world, Elica.
2. Cheng Collection
   1. Baffle Filters
      1. Baffle filters are more efficient in allowing air to pass through than standard mesh filters. Baffle filters work by creating airflow that runs through two layers of metal that restrain the flow of fluids and in this case grease. The double layer filter causes grease to collect then drain into a collecting pan where it can be easily disposed of by simply washing the filter. Baffle filters are most commonly found in commercial ventilation but are included in the Cheng Collection hoods to achieve world class performance and unparalleled design innovation.
3. Elica Collection
   In designing the Elica Collection not only did we rethink hood design itself, we also rethought how a hood should work. Elica Collection hoods are designed to maximize air velocity through a single filter. We discovered that it is possible to increase air velocity through a smaller capture area by decreasing the blower housing unit size. This breakthrough allows design to take center stage without sacrificing performance.
   1. Perimeter Aspiration System, Om (PAS)
      1. PAS covers the area around the filter and forces air to pass through smaller “slots”. This causes the air to acquire a higher velocity acting as an “air curtain” around the hood.
   2. Elica Blower System
      1. Elica Collection hoods are designed to maximize airflow through a single filter. By decreasing the internal blower housing size and concentrating air flow through a single filter, air velocity increases.
      2. (additional explanation) The increased air velocity creates an area of low pressure within the hood and the higher pressure outside the hood helps maximize airflow through the single filter opening.
   3. Recirculating
      1. All Elica Collection hoods have recirculating options to eliminate the need for ducting out of the home. This ideal for homeowners who don't have ducting running to the outside of the home. The charcoal filters in the recirculating kit thoroughly capture all cooking pollutants and prevent them from being released into the home environment. Once the air passes these charcoal filter it is released into the home as a clean air. The filters are long life charcoal filters which can last up to a year under normal conditions and can be washed with common household items.
4. Europa Collection
   1. Stainless steel mesh filters
      1. Europa Collection hoods use high quality aluminum mesh filters to assure that no grease passes through and accumulates in the motor.
   2. Recirculating
      1. All Europa Collection hoods have recirculating options to eliminate the need for ducting out of the home. Europa Collection charcoal filters typically last 3 - 4 months under normal conditions and are disposable.
5. Power Series
   1. Centrifugal blower system
      1. Centrifugal blowers push air downward and away from center, forcing air through residue baffles before entering duct work. This system eliminates the need for mesh filters and increases air flow performance.
   2. Centrifugal blower self cleaning
      1. Many power series hoods are equipped with a self cleaning feature. By spraying a liquid cleaning agent into the blower wheels while on low, the hood will clean itself. The liquid will accumulates in residue pans and drains it into residue cups.
   3. Power Series products also feature:
      1. Intelli-sensors
      2. Touchless controls
      3. Automatic blower speeds control
      4. Delay off function with auto shut down
      5. Stainless baffle filter
6. Pro-style hoods
   1. Pro-style baffle filters
      1. Baffle filters are more efficient in allowing air to pass through than standard mesh filters. Baffle filters are most commonly found in commercial ventilation.
   2. Intelli-sensor touch less controls
      1. The unique Intelli-sensor control eliminates the need to touch the controls. You can control the hood by simply placing your finger in front of the control panel.
      2. Intelli-sensor controls also have an auto sensing option to automatically sense heat differences and change speeds accordingly.