As your chef cooks delicious dishes,

Blowtech keeps your kitchen ambience fresh & clean

UniversalFan

Orientation

An ISO:9001-2000 certified company

Kitchen Exhaust Fans – KPB & KPD Series

An ISO:9001-2000 certified company

Kitchen Exhaust Fans – KPB & KPD Series

ACCREDITEDINTERNATIONAL

A-15, Sector-65, Noida 201301 INDIA Ph. : +91-120-4229300 Fax : +91-120-4229309

E-mail : blowtech@airtelmail.in web : www.blowtechair.com

BLOWTECH AIR DEVICES PVT. LTD.(An ISO:9001-2000 certified company)

The company’s 20,000 sq. ft. plant in NOIDA, near New Delhi incorporates state of the art equipment and machinery

Dos and Don'ts of Kitchen Exhaust Fan Selection:

Kitchen Exhaust is a special application and utmost care should be exercised in selecting the right fan, to ensure long trouble free operation.

KPB KPD

lFor kitchen exhaust applications, a forward curved (FC) fan is not recommended.

1. Kitchen exhaust consists of hot gases laden with oil, fats, dust and particulate matter. This forms an ideal combination for deposits on the concave side of a forward curved blade because of its high curvature. These deposits, unless cleaned at short intervals, first reduce fan performance by the narrowing of the blade passage and eventually to excessive vibration and ultimate damage of the FC impeller and the fan. (See the photo of a FC impeller used for kitchen exhaust)

2. The forward curved impeller has a Power Overloading characteristics. This means that at a given RPM, the shaft power of a FC fan increases with the CFM. If the design static for a given application was incorrectly estimated and the actual static was less than design, the motor of the FC fan could overheat or even burn.

3. The FC fans are less efficient than their BI/BC counterparts.

lDon't use a fan with the motor/drive train in the path of the contaminated exhaust air.

Don't

A FC Impeller

l2007 ASHRAE Handbook HVAC Applications, Chapter 31, Kitchen Ventilation, Pages 31.12 & 31.13 : Recommends the use of a C e n t r i f u g a l F a n w i t h Backward Inclined/Curved Impeller for kitchen exhaust applications.

1. Blowtech's KPD and KPB Series fans have BI/BC impellers which have self cleaning properties. This considerably reduces maintenance frequency. Because of very few number of blades (6 to 8), it is much easier to clean BI/BC blades.

2. Blowtech's KPD and KPB Series fans exhibit Limit Load characteristics i.e the shaft power has a maximum value and the motor rating generally corresponds to this maximum value. Thus for the given speed, no matter what the static, the shaft power will always be less than motor power.

3. Blowtech's innovative plug fan design uses high efficiency BI/BC Impellers. Higher efficiency means less power for a given duty point.

lIn Blowtech's KPD and KPB fans, the motor/drive train is kept outside the air stream.

lThe casing of the Blowtech BI Plug Fan is made of Aluminum Extrusions with puff insulated double skin panels. This adds to the aesthetics of the system, considerably reduces casing sound and leads to an overall quite operation of the fan.

lFor a given duty, the BI/BC Impeller's speed is closer to the RPM of commercially available standard motors. This feature makes the BI plug fan more amenable to Direct Drive configuration. Our direct driven KPD series fans are available in 8 sizes.

lOur KPD and KPB series fans have been specially designed for kitchen exhaust application, for a long trouble free operation.

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Plug Type Fan with High Efficiency SISW Backward Inclined Impeller

Model CFM Ps (mm) CFM Ps (mm) RPM Shaft Power (hp)

KPB250 600-1500 25-100 900 50 2800 0.5

KPB315 1200-2500 25-100 1800 50 2410 0.9

KPB450 2500-4000 25-100 3500 50 1650 1.6

KPB500 4000-6000 25-100 4800 50 1540 2.3

KPB560 5000-7000 25-100 6000 50 1550 3.0

KPB630 6000-9000 25-100 8000 60 1350 4.5

KPB710 8000-11000 25-100 10000 60 1180 5.6

KPB800 10000-14000 25-100 12500 60 1070 7.2

KPB900 12000-17000 25-100 15000 60 900 8.3

KPB1000 15000-23000 25-100 20000 60 850 11.5

KPB1120 20000-28000 25-100 25000 60 770 14.0

KPB1250 25000-33000 25-100 30000 60 660 16.4

Performance Data

KPB Series - Belt Driven

Model Wheei Dia. RPM Motor Power Optimal Operating Point

(mm) (hp) CFM Static(mm)

KPD250 250 2800 0.5 1000 48

KPD315 315 2800 1.5 2200 60

KPD450 450 1400 1.0 2500 42

KPD500 500 1400 2.0 3500 53

KPD560 560 1400 3.0 4700 60

KPD630 630 1400 5.0 8250 65

KPD800 800 900 7.5 9600 50

KPD900 900 900 10.0 15000 60

Performance Data

Plug Type Fan with High Efficiency Backward Inclined ImpellerSISW

KPD Series - Direct Driven

The KPB series belt driven fans are available in 13 sizes in capacity upto 33000 CFM. These fans can be used for any specific duty as the fan speed can be set to any desired value by adjusting the fan/motor pulley ratio.

Blowtech's Direct Driven Fans are an economic alternative to the belt driven KPB Fans since the BI Impeller is mounted directly on the motor shaft. You save on the cost of bearings, shaft, pulleys & belts. KPD fans are available in 8 sizes in capacity upto about 16000 cfm. Because the fan speed is fixed, choice of duty points is limited.

Salient Features:- lPlug Fan TechnologylHigh Efficiency Backward Inclined Impeller lUniversal Fan OrientationlSleek, Rust Proof Fan Casing in Al. Extrusions with

Pre-coated Double Skin Puff Insulated Panels lAvailable in both Direct and Belt Driven

Configurations

UniversalFan

Orientation

The innovative plug fan design incorporating a high efficiency Backward Inclined (BI) SISW Impeller does away with the need for a conventional scroll housing, thus permitting a fan with universal orientation. Depending on site conditions, the outlet flange can be mounted at any one of the three orientations - Left, Right or Vertical Discharge, because the outlet flange and the two side panels are of equal size and inter-changeable. So you do not have to know the site condition before ordering the fan.

MotorABB/Crompton make, 3 phase, TEFC, Insulation Class 'F', IP55 protection.

Standard Accessories Supplied with our Fans:1. Belt Guard2. Rain Shield for Bearings and Motor3. Bird Screen at Fan Outlet

Caution:In case of re-installation of the wheel/motor, it is vital that the inlet cone and the wheel are precisely aligned.

Normal Performance Range Typical Operating Point

Dimensions – KPD Series

View from Discharge Side

Model A B C Outlet Flange Inlet FlangeD E I

KPD250 400 195 400 340 135 250

KPD315 500 230 500 440 170 315

KPD450 750 310 600 690 250 450

KPD500 820 350 650 760 290 500

KPD560 900 375 725 840 315 560

KPD630 1000 430 800 940 370 630

KPD800 1300 560 1020 1240 500 800

KPD900 1400 630 1170 1340 570 900

View from Suction Side

B

E

CAll dimensions are in mm

A

A DI

I

Model A B C Outlet Flange Inlet FlangeD E I

KPB250 400 195 550 340 135 250

KPB315 500 230 650 440 170 315

KPB450 750 310 750 690 250 450

KPB500 820 350 810 760 290 500

KPB560 900 375 840 840 315 560

KPB630 1000 430 990 940 370 630

KPB710 1150 500 1060 1090 440 710

KPB800 1300 560 1170 1240 500 800

KPB900 1400 630 1250 1340 570 900

KPB1000 1600 700 1420 1540 640 1000

KPB1120 1800 760 1540 1740 700 1120

KPB1250 2000 820 1600 1940 760 1250

View from Suction SideView from Discharge Side

C

B

E

Dimensions – KPB Series

All dimensions are in mm

A

A DI

I

3Air Flow (m /hr)

KPD Performance Graph

Sta

tic P

ress

ure

(P

a)

1000

900

800

700

600

500

400

300

200

100

0

0 5000 10000 15000 20000 25000 30000

KPD800KPD630

KPD500

KPD250

KPD560

KPD900

KPD315

KPD450