CB Blowers
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| CB Blowers PRODUCTSFans and Ventilators |
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| UBCA Upblast Power Roof Ventilators The UBCA fan is an upblast power roof ventilator designed for the exhaust of grease-laden air from restaurant range hoods, and general ventilation applications where vertical discharge of exhaust air is required. Applications include all types of commercial and institutional kitchens, such as restaurant and cafeteria, fast food , hotel and motel, bakery, delicatessen, school, hospital and military. |
 UBCA - Sizes 12 to 20 165 to 19797 CFM to 3" Static Pressure |
| CUBA Belt Drive Upblast Power Roof Ventilators The CUBA Upblast Power Roof Ventilator is designed for the ventilation of grease laden air from restaurant range hoods and general ventilation applications where a vertical air discharge is desired. Applications include all types of commercial and institutional kitchens such as those found in restaurants and cafeterias, fast food outlets, hotels and motels, bakeries, delicatessens, schools, hospitals and military establishments. |
 CUBA - Sizes 12 to 20 711 to 5709 CFM to 2" Static Pressure |
| CUDA Direct Drive Upblast Power Roof Ventilators The CUDA Upblast Power Roof Ventilator is designed for general and spot ventilation of problem areas in single or multi-story structures. Such applications include warehouses, garages, plants, sports arenas, athletic clubs, hospitals and shopping centers. |
CUDA - Sizes 06 to 20 133 to 4857 CFM to 2" Static Pressure |
| CRBA Belt Drive Power Roof Ventilators The CRBA fans are quiet, dependable power roof ventilators recommended for a wide range of general exhaust applications where low and medium ranges of air volume and pressure are specified. Applications include virtually all types of light manufacturing, commercial and institutional buildings such as shopping centers, hospitals, schools, hotels, office and apartment buildings, warehouses, airports, bus terminals, and many others. |
 CRBA - Sizes 12 to 20 245 to 34963 CFM to 2" Static Pressure |
| CRF Direct Drive Power Roof Ventilators CRF units are quiet, dependable power roof ventilators recommended for a wide range of general exhaust applications where relatively low ranges of air volume and pressure are specified. Applications include virtually all types of commercial and institutional buildings such as shopping centers, hospitals, schools, hotels, office and apartment buildings, warehouses, airports, bus terminals, and many others. |
CRF |
| CRBCA Belt Drive Power Roof Ventilators The CRBCA units are quiet, dependable power roof ventilators recommended for a wide range of general exhaust applications where relatively low ranges of air volume and pressure are specified. Applications include virtually all types of commercial and institutional buildings such as shopping centers, hospitals, schools, hotels, office and apartment buildings, warehouses, airports, bus terminals, and many others. |
 CRBCA - Sizes 06 to 20 95 to 6253 CFM to 2" Static Pressure |
| CWBA Belt Drive Wall Exhaust Fans The CWBA Wall Centrifugal General Exhaust Fan, designed for ventilation of problem areas in single or multi-story structures, is the first Fan of this type to use American Coolair’s Unique C-Drive. Applications include warehouses, garages, plants, sports arenas and athletic clubs, hospitals and shopping centers. |
 CWBA - Sizes 12 to 20 165 to 19797 CFM to 3" Static Pressure |
| CWDA Direct Drive Wall Exhaust Fans The CWDA is a general exhaust fan designed for spot ventilation of problem areas in single or multi-story structures. Such applications include warehouses, garages, plants, sports arenas and athletic clubs, hospitals and shopping centers. |
CWDA - Sizes 06 to 20 133 to 4857 CFM to 2" Static Pressure |
| SQB Belt Drive Square In-Line Fans The SQB Square In-Line Centrifugal Fans are designed to
provide
efficient air movement in ducted or non-ducted ventilation systems.
Designed
for easy positioning and quick installation, the versatile Square
In-Line
can be located inside equipment rooms, in ceiling spaces or as parts
for
O.E.M. equipment. SQD The SQD Square In-Line Centrifugal Fans are designed to provide efficient air movement in ducted or non-ducted ventilation systems. Designed for easy positioning and quick installation, the versatile Square In-Line can be located inside equipment rooms, in ceiling spaces or as parts for O.E.M. equipment. |
 SQDA - Sizes 06 to 18 122 to 4024 CFM to 2" Static Pressure SQBA - Sizes 12 to 20 245 to 23056 CFM to 3" Static Pressure |
| TRIMLINE Hoods and Ventilators For Exhaust Relief Fresh Air Intake or Gravity Ventilation Systems. Modernistic low silhouette style to blend in with roof top lines and equipment. Designed with improved aerodynamically shape air flow passages. Exhaust Relief Ventilators Models TEV Exhaust Relief Ventilators have a 1 to 1 ratio of hood perimeter opening to throat area. Fresh Air Intake Ventilators Models TIV Fresh Air Intake Ventilators have a 2 to 1 ratio of hood perimeter opening to throat area. |
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| LOUVERLINE Penthouses and Ventilators The louvered look - a favorite selection for modern architectural eye appeal. Penthouses - to dress up and beautify roof tops by enclosing unattractive mounted equipment viewed from higher floors and taller buildings. Ventilators - For Exhaust Relief and Fresh Air Intake Ventilating Applications. Capacities up to 103,900 CFM. Exhaust Relief Models LVX Exhaust Ventilators are designed for a maximum air velocity of 1200 fpm through the louvered openings and 1200 fpm through the throat. Fresh Air Intake Models LVN Air Intake Ventilators are designed for a maximum inlet velocity of 600 fpm to reduce entrainment of rain or snow to a minimum. The maximum throat velocity is 1200 fpm. |
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Canada Blower Industrial processes and plant
ventilation systems often need more air than originally designed.
Increased production requirements, process changes, and facility
renovations are a few of the major reasons. Additionally, the lack of
adequate maintenance over time can negatively impact system airflows.
This article discusses several procedures that can increase airflow.
Often airflow can be increased by adhering to proper fan maintenance
procedures as outlined in fan installation and maintenance literature.
Fan speed can decrease by as much as 10% to 20% when belts are too
loose, with a corresponding loss of airflow. A fan cannot perform as
designed if the air flow surfaces are distorted by contaminants. Even
in large fans, a sixteenth of an inch of build up can reduce
performance. Centrifugal fans will move some air even when running
backwards. While some types would use so much horsepower they would
trip circuit breakers, other design s could run for years without being
detected. Fan components may be out of position due to routine cleaning
or painting or the wheel could have shifted during shipment. For
backward inclined fans, the relation of wheel to inlet cone is very
critical. Even a quarter of an inch can have a major impact. The fan s
installation and maintenance literature shows the proper positioning of
the wheel to the inlet cone.
One of the easiest solutions to low airflow problems is speeding up the
fan. While airflow is increased by speeding up the fan, so too are
static pressure, noise, and power requirements. Therefore, while
increasing the fan s speed is an easy procedure with low first cost,
the additional operating expense over time makes it the most costly
solution. When increasing fan speed, it is necessary to check the
maximum safe speed of the fan and make sure the motor is capable of the
horsepower required to run the fan at the new speed. But never run a
fan beyond its maximum safe speed.
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