VentAHood Magic Lung Blower Operating manual

Owner and Maintenance Guide
for Models Equipped with
Magic Lung® Blower
Thank You For Choosing Vent-A-Hood®
We know you will be pleased with your purchase decision.
Since 1933, our company has earned an outstanding reputation
because of our commitment to performance, quality, and
reliability.
The Importance of Cooking Ventilation
The main purpose of cooking ventilation is to capture the
by-products of cooking. These by-products are heat, steam,
smoke, odor, hazardous gases, and grease. Without proper
cooking ventilation, these by-products can cause a great deal
of harm to the home. Vent-A-Hood®range hoods exhaust
all cooking by-products to the outside with the exception of
GREASE, which is collected by the patented Magic Lung®
blower system.
The Magic Lung Blower®- How It Works
The Magic Lung® internal blower system was originally patented
in 1937. The Magic Lung®pressurizes grease-laden air as it
passes through the blower wheel and cools the grease from a
vapor into a liquid. The centrifugal action of the Magic Lung®
traps 99% of cooking grease without the use of messy and
inefcient wire mesh or bafe lters. The constant speed
centrifugal blower is also designed to create a pressure barrier,
lowering the risk of an attic or wall re.
L023 0314A

Page 2L023
Safety
READ AND SAVE THESE INSTRUCTIONS
WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC
SHOCK, OR INJURY TO PERSONS, OBSERVE THE
FOLLOWING:
A. Use this unit only in the manner intended by the manufacturer.
If you have questions, call the manufacturer.
B. Before servicing or cleaning unit, switch power off at service panel
and lock the service disconnecting means to prevent power from
being switched on accidentally. When the service disconnecting
means cannot be locked, securely fasten a prominent warning
device, such as a tag, to the service panel.
C. Installation work and electrical wiring must be done by qualied
person(s) in accordance with all applicable codes and standards,
including re-related construction.
D. Sufcient air is needed for proper combustion and exhausting
of gases through the ue (chimney) of fuel burning equipment
to prevent back drafting. Follow the heating equipment
manufacturer’s guideline and safety standards such as those
published by the National Fire Protection Association (NFPA),
and the American Society for Heating, Refrigeration, and
Air Conditioning Engineers (ASHRAE) and the local code
authorities.
E. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities.
F. Ducted fans must always be vented to the outdoors. Do not vent
exhaust air into spaces within walls or ceilings, crawl spaces,
attics, or garages.
WARNING - TO REDUCE THE RISK OF A RANGE
TOP GREASE FIRE:
A. Never leave surface units unattended at high settings. Boilovers
cause smoking and greasy spillovers that may ignite. Heat oils
slowly on low or medium settings.
B. Always turn hood ON when cooking at high heat or when
ambeing food (i.e. Crepes Suzette, Cherries Jubilee, Peppercorn
Beef Flambe).

Page 3 L023
Safety (Continued)
C. Clean ventilating fans frequently. Grease should not be allowed
to accumulate on fan or in blower housing.
D. Use proper pan size. Always use cookware appropriate for the
size of the surface heating element.
WARNING - TO REDUCE THE RISK OF INJURY TO PERSONS,
IN THE EVENT OF A RANGE TOP GREASE FIRE, OBSERVE THE
FOLLOWING:
A. SMOTHER FLAMES with a close-tting lid, cookie sheet, or
metal tray, then turn off the burner. BE CAREFUL TO PREVENT
BURNS. If the ames do not go out immediately, EVACUATE
AND CALL THE FIRE DEPARTMENT.
B. NEVER PICK UP A FLAMING PAN - You may be burned.
C. DO NOT USE WATER, including wet dish cloths or towels - a
violent steam explosion will result.
D. Use an extinguisher ONLY IF:
1) You know you have a Class ABC re extinguisher and you
already know how to operate it.
2) The re is small and contained in the area where it started.
3) The re department is being called.
4) You can ght the re with your back to an exit.
CAUTION
TO REDUCE THE RISK OF FIRE, AND TO PROPERLY EXHAUST
AIR, BE SURE TO DUCT EXHAUST AIR OUTSIDE. DO NOT VENT
EXHAUST AIR INTO SPACES WITHIN WALLS OR CEILINGS, OR
INTO ATTICS, CRAWL SPACES, OR GARAGES.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO
NOT USE THIS FAN WITH ANY SOLID-STATE SPEED CONTROL
DEVICE.

Page 4L023
Safety (Continued)
CAUTION
FOR GENERAL VENTILATION USE ONLY. DO NOT USE TO
EXHAUST HAZARDOUS OR EXPLOSIVE MATERIALS AND
VAPORS.
WARNING
TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.
THIS MANUAL SHOULD REMAIN WITH THE HOOD
FOR FUTURE REFERENCE

Page 5 L023
Operating Instructions
A. Models with Rocker Switch Controls
On models with rocker switches, blowers are switched independent
from one-another. The user should generally start with the hood on
the lowest setting, and then increase speed and/or turn on additional
blowers as required.
Red Switch - This switch operates a two-speed blower. This two-
speed blower allows the user to switch the hood to “LOW” (position
I) for quieter operation during light cooking, while the “HIGH”
(position II) setting delivers the full power of the Magic Lung®blower
unit. If the two-speed blower is turned to “LOW”, the heat sensor
(SensaSource®) monitors cooking activity. If the heat reaches an
unacceptable level inside the hood, or a range re occurs, the two-
speed blower will switch from “LOW” to full power automatically.
The sensor will return the blower to the “LOW” level when the heat
subsides or the hood may be turned off manually (middle position).
Red Switch
White Switch - This switch controls the lights. This switch can be set
for “LOW” level lighting (position I), “HIGH” level lighting (position II),
or “OFF” which is in the middle position.
White Switch

Page 6L023
Operating Instructions (Continued)
Black Switch - This switch operates an additional single-speed
blower. The single-speed blower is either off or on, and is not
controlled by the SensaSource®heat sensor or the red switch. This
blower should be engaged if the heat level exceeds the capacity of
the two-speed blower.
Black Switch
Note: The location of the switches on the hood corresponds to the
location of the blowers in the hood (i.e. left switch operates left
blower, etc.) except for a T400H Island 1100 CFM Cluster Blower,
which is diagrammed below.
T400 Island Cluster Blower Conguration (Top View)
Black Switch Red Switch White Switch Red Switch Black Switch
Blower 1 Blower 2 Lighting Blower 3 Blower 4
Front Side
Blower 1 Blower 2
Blower 3 Blower 4

Page 7 L023
Operating Instructions (Continued)
B. Models with Dial Controls
On hood models with dial controls, blower assemblies are switched
independent from one-another. The user should generally start with
the hood on the lowest setting, and then increase speed and/or turn
on additional blowers as required.
Blower Control Dial - This switch operates a single or dual blower. To
operate the blower(s), rotate the dial through the fan speed settings
by turning it clockwise (facing the knob). Rotate the dial counter-
clockwise to turn the blower(s) off.
Light Control Dial - This switch operates the lights. To operate the
lights, rotate the dial through the light intensity settings by turning
it clockwise (facing the knob). Rotate the dial counter-clockwise to
turn the lights off.
Light Control Dial
Blower Control Dial
Blower Control Dial Light Control Dial Blower Control Dial
Blower 1 & 2 Lighting Blower 3 & 4
T400 Island Cluster Blower Conguration (Top View)
Front Side
Blower 1 Blower 2
Blower 3 Blower 4

Page 8L023
Hood Cleaning
A. Hood Canopy
Wipe down the interior and exterior of the hood as needed with a soft
cloth and warm soapy water (liquid dish detergent is acceptable). Do
not use acids, abrasives, strong detergents, solvents, or scouring
pads. Stainless steel should be treated with a quality stainless steel
cleaner such as Stainless Steel Magic®(Vent-A-Hood part number
SS64®). Follow all label instructions. Do not polish across the grain
or in circles.
Real brass, real copper, and hammered copper hoods will oxidize
and/or tarnish over time. Use a quality copper or brass cleaner such
as Red Bear Copper Polish®(Vent-A-Hood®part number CP101).
Follow all label instructions. Do not polish across the grain or in
circles. Do not use acids, abrasives, strong detergents, degreasers,
solvents, or scouring pads.
B. Blower Unit
WARNING: To reduce the risk of personal injury, be sure the
power is turned off in the hood before removing the shield(s)
and blower housing(s).
The Vent-A-Hood®Magic Lung®blower captures grease by-products
in the blower housing(s) and E-Z Clean blower shield(s). E-Z Clean
blower shields require more frequent cleaning than the blower
housing but individual cooking habits determine how often each item
will need to be cleaned.
E-Z Clean blower shields are easily removed for cleaning by pulling
the E-Z Clean blower shield(s) toward the front of the hood being
careful to keep the tray level if the hood has been recently used.

Page 9 L023
A
B
Hood Cleaning (Continued)
To remove the blower housing(s) and damper(s), rst remove the E-Z
Clean blower shield. The blower housing is removed for cleaning by
unsnapping the suitcase latches (one on each side of the housing).
Then, pull the housing forward and gently “tip” it downward to clear the
blower wheel(s). The blower wheel(s) can be removed (if necessary)
by using the hex wrench that was provided with this manual. See part
C of this section for details on how to clean the blower wheel(s).
Clean the shield(s), damper(s), and/or blower housing(s) in a sink
of warm soapy water (liquid dish detergent) and let soak for a few
minutes. Wash with a sponge or dishcloth, rinse and let drain before
reinstalling. Alternatively, the blower housing(s) and E-Z Clean blower
shield(s) may be placed into a dishwasher.
C. Blower Wheel
WARNING: To reduce the risk of personal injury, be sure the
power is turned off in the hood before removing the shield(s)
and blower housing(s).
Regular cleaning of the blower housing should prevent grease
accumulation on the blower wheel. If grease build-up should occur,
the blower wheel may easily be cleaned in place using a soft bristle
toothbrush and a common degreaser such as Formula 409®. Take
care not to move or lose the metal balancing clips that may be afxed
to the wheel (B).

Page 10L023
Hood Cleaning (Continued)
For instances where the blower wheel may need to be removed,
follow the instructions below.
Removing the blower wheel requires a 1/8” hex wrench which has been
provided with this manual. There is a small set screw on the side of
the hub of the wheel (A) that tightens up against a “at” spot on the
motor shaft. The set screw must be turned ½turn counterclockwise
to remove the blower wheel. Insert wrench through the blades of the
blower wheel and into the set screw. If the wheel is difcult to remove,
the area where the motor shaft makes contact with the blower wheel
hub may need to be sprayed with a common penetrating oil such
as WD-40®.
After allowing the penetrating oil to soak for a few minutes, push
the blower wheel forward slightly, then gently pull the blower wheel
off the motor shaft. Use caution to avoid bending or distorting the
blower wheel and take care not to move or lose the metal balancing
clips that may be afxed to the wheel (B).
A soft bristle toothbrush with warm soapy water may be used to clean
the blades, or soak the blower wheel in warm soapy water. When
reinstalling the wheel onto the motor shaft, make sure the set screw
makes direct contact with the “at spot” on the motor shaft. Slide
the blower wheel onto the motor shaft as far as it will go, making
sure the back of the blower wheel does not touch the motor mount
screws protruding from the motor.
If the motor is too far back, it will rub the motor mount screws, and if
it is too far forward, it will rub the inside of the blower housing. Adjust
the blower wheel slightly to nd the correct front-to-rear location.
Tighten the set screw (clockwise) to lock the blower wheel in the
correct position.
NOTE: For hoods that have more than one blower wheel, make sure
that white blower wheels are matched up with white motor rings,
and black blower wheels are matched up with black motor rings.
The hood will not perform properly if blower wheels and motors are
mismatched.

Page 11 L023
A. Light Bulb Replacement
WARNING: To reduce the risk of personal injury, turn off power
and allow lights to cool before proceeding.
Halogen Bulbs
To remove the bulb, turn it counterclockwise. If the light is difcult to
remove, it may be necessary to use the light bulb suction cup that
has been provided with this manual.
Replace the bulb with a GU10 120 volt, 50 watt halogen bulb. (Vent-
A-Hood®part number P1110).
Infrared Heat Lamps
To remove the bulb, turn it counterclockwise. Take care not to put
too much force on the glass as it may easily be broken. If the light
is difcult to remove, obtain a bulb suction cup from a lighting or
hardware store.
Replace the bulb with an R40, 120 volt, 250 watt maximum infrared
bulb.
Maintenance/Troubleshooting

Page 12L023
B Motor Replacement
WARNING: To reduce the risk of personal injury, be sure the
blower(s) are turned off in the hood before removing the
shield(s) and blower housing(s).
Remove the shield and blower housing as described in Hood
Cleaning on page 8, Section B.
Use a ¼” nut driver to remove the three motor mount screws that
attach the motor to the hood and gently pull the motor forward and
down. Disconnect the wiring harness, remove the old motor and
replace it with the new motor. Be sure to fully engage the electrical
connections and tighten the motor mount screws. If necessary,
adjust the blower wheel as described in Hood Cleaning on page 9,
Section C.
Maintenance/Troubleshooting (Continued)
C What To Do If...
Smoke is in the kitchen. Check the following:
Is the hood sized appropriately for the type of cooking equipment
it is ventilating?
The purpose of a hood is to collect cooking contaminants and hold
them until the blower unit can exhaust them to the outside. Therefore, it
is necessary to size the hood based on the type of cooking equipment
that is being used. Whenever possible, hoods should overlap the
cooking equipment by at least three inches on each side. For island
applications, this is mandatory. The hood should also project out to
the front edge of the front burners. Finally, the height of the hood can
affect its performance. Generally speaking, taller hoods are more
suitable for professional style ranges, whereas under cabinet hoods
are recommended for standard cooking equipment.

Page 13 L023
Does the blower capacity of the hood match the cooking
equipment it is over?
B100 Single Blower (300 CFM) - Under cabinet or wall mount hoods
for standard electric cooking equipment.
B200 Dual Blower (600 CFM) - Under cabinet or wall mount hoods
for standard cooking equipment, gas or electric, and professional
style ranges.
B200 Dual and B100 Single Blowers (900 CFM) - Wall mount hoods
for larger professional style ranges.
Two B200 Dual Blowers (1200 CFM) - Wall mount hoods for larger
professional style ranges.
T200 Island Dual Blower (600 CFM) - Island hoods for standard
cooking equipment, gas or electric, and professional style ranges.
Two T200 Island Dual Blowers (1200 CFM) - Island hoods for larger
professional style ranges.
T400 Island Cluster Blower (1200 CFM) - Island hoods for larger
professional style ranges.
Is the hood ducted properly?
The duct should be smooth walled. Corrugated or “ex” type duct
must not be used as it restricts airow. The duct work should be the
same square inch area (or larger) as the hood discharge for the
entire length of the duct run. Run the duct as short and straight as
possible. Enlarge the duct for longer duct runs. Maintain 4 to 5 foot
spacing between turns. Turns should be smooth and gradual, not
sharp and angled. Roof jack and wall louver openings must be free
of obstacles, at least as large as the duct size, and open freely.
Maintenance/Troubleshooting (Continued)

Page 14L023
Is the hood mounted at the appropriate height off of the cooking
surface?
The height of the hood off the cooking surface is very important. The
higher the hood is mounted, the less effective it will be. Hoods only
collect cooking vapors; they will not pull cooking contaminants back
into the hood if they escape unto the kitchen. Generally speaking,
the deeper the hood, the higher the hood can hang and still be
effective. The following recommended maximum mounting heights
are for optimum performance.
Under Cabinet 6” tall 21-24”
Under Cabinet 9” tall 24-27”
Euroline - PDH14/SLDH14 24”
TLH 23-3/4”
Wall Mount 30”
Island 30”
Standard Liner - BHSLD 24-27”
Pro Liner - BHPSLD, BHPSLB 27-30”
Island Liner - THSLE, THPSLE 30”
Are the blower wheels paired with the correct motors, and are
they oriented in the hood properly?
Remove the blower housing as described in Hood Cleaning on Page
8, Section B. White blower wheels should be paired with white motor
rings and turn clockwise. Black blower wheels should be paired with
black motor rings and turn counterclockwise. If the blower wheels
and motors are incorrectly paired and positioned, the hood will not
function properly.
Maintenance/Troubleshooting (Continued)

Page 15 L023
Do the dampers open and close freely?
With the blower housing off (see Hood Cleaning on Page 8, Section
B), locate the damper (ap) and ensure that it opens and closes freely.
If it does not, identify and remove any obstructions that are preventing
the damper from opening. Screws protruding through the duct work
are the most common obstruction. During installation, only duct tape
should be used to connect duct work to the top of the hood. Screws
that are used to connect duct work and transitions extend inside the
duct work and may obstruct the damper from opening.
Is the hood making a rubbing or scraping noise?
This may be caused by the blower wheel coming in contact with
the front edge of the blower housing or rubbing the motor mount
screws. Unsnap the suitcase latches on the blower housing (see
Hood Cleaning on Page 8, Section B) and make sure the housing
is properly seated on the face of the motor housing. If the blower
wheel is rubbing on the motor mount screws, the blower wheel will
need to be repositioned on the motor shaft (see Hood Cleaning on
Page 9, Section C).
NOTE: If smoke still enters the kitchen after following these
suggestions, contact your dealer for additional service and/or
suggestions.
Maintenance/Troubleshooting (Continued)

Page 16L023
Vent-A-Hood®warrants to the original consumer-purchaser its
products to be free of defects in material and workmanship for a
period of ve years from the date of purchase with the following
limitations:
A. Freight damage
B. Blower wheel damage
C. Light bulbs
D. Damage or malfunction caused by faulty installation
E. Incidental or consequential damage
F. Commercial application
G. Misapplication or modication of or to any part of the
Vent-A-Hood®product
Warranty
To make a warranty claim, contact the dealer where the hood was
purchased. They will contact the appropriate service agents. It is not
necessary to register the product directly with Vent-A-Hood®.
Service
[phone]
www.ventahood.com
Model No.:
(Eg. B100MSC, B200MSC, T200MSC, T400MSC, etc.)
Serial No.:
(Eg. NAZ12345, +MB12345, NB12345, etc.)
Purchase Date:
Hood Style:
(Eg. BH234PSLD SS, PRH18-348 BL, JDH466/C1 OL, TH236SLE WH, etc.)