KOOLTRONICDuct Supply Blowers generate large volumes of cooling air in limited spaces. They
deliver filtered air from either one or two side discharge ports to cool every component in an
electronics system by means of a single centrifugal blower wheel. The wheel, driven by a powerful,
precision ball-bearing motor, delivers cooling air to side ducts, built into the enclosure, for
distribution where needed. While the motor operates at a quiet, life-extending lo w speed, the pressure
characteristic of the large, narrow wheel far exceeds that of conventional blower units often used to
supply duct systems.
Filtered air is delivered directly from the wheel into the duct, with no twists or turns. The steep
performance curves demonstrate that duct and other frictional losses cannot hamper adequate air
delivery when a unit of this design is specified as the cooling source.
Airflow vs. static pressure curves are
shown for 60 Hz and 50 Hz (broken
line) inputs. Static pressure is in
inches of water.
CONVERSION FACTORS
Multiply airflow in cubic feet per
minute (CFM) by:
• 1.7 to obtain airflow in cubic
3
meters per hour (m
/hr.)
• 0.47 to obtain airflow in liters per
second (L/S)
Multiply static pressure in inches of
water (''H2O) by:
• 25.4 to obtain static pressure in
millimeters of water (mm H
2
O)
• 249 to obtain static pressure in
Pascals (Pa)
1.0
.5
STATIC PRESSURE
.1
25
0
1.0
.5
STATIC PRESSURE
.1
50
0
KDP726
ONE DISCHARGE PORT
125250375500
AIRFLOW C.F.M.
KDP876
2505007501000
AIRFLOW C.F.M.
TWO DISCHARGE PORTS
KDP700
3.0
1.5
STATIC PRESSURE
.3
40
0
2.5
1.25
STATIC PRESSURE
.25
50
0
KDP728
200400600800
AIRFLOW C.F.M.
KDP878
2505007501000
AIRFLOW C.F.M.
KDP730
HOW TO ORDER
Specify model number. For 230 VAC
operation, add a 2 after the K. Example:
K2DP875.
For assistance in model selection, refer to
the Blo
contact KOOLTRONIC, or use one of our
design aid software programs, available
FREE.
wer and Fan Selection Guides,
1.0
.5
STATIC PRESSURE
.1
25
0
1.0
.5
STATIC PRESSURE
.1
30
0
125250375500
AIRFLOW C.F.M.
KDP875
150300450600
AIRFLOW C.F.M.
2.0
1.0
STATIC PRESSURE
.2
40
0
2.0
1.0
STATIC PRESSURE
.2
50
0
200400600800
AIRFLOW C.F.M.
KDP885
2505007501000
AIRFLOW C.F.M.
CALL 1-800-321-KOOL (5665)
or FAX 609-466-1114
POPULAR MODELS ARE
STOCKED AND READY TO SHIP
STANDARD FEATURES
RUGGED CONSTRUCTION: Precision-engineered heavy-gauge steel construction insures blower will stand up under tough industrial applications.
EIA-notched flanges extend 17
BAKED POWDER FINISH: Durable, baked-on gray powder finish is standard. Other finishes are available.
PRECISION BALL-BEARING MOTORS: All motors, whether permanent split capacitor or shaded pole, are UL/CSA Recognized, and include
automatic-reset thermal overload protection. Designed for low temperature rise, KOOLTRONIC motors are also cooled by the blowers' intake air, for
maximum motor life. All motors meet Federal Specification CC-M-1807A, and include double-sealed or double-shielded precision ball bearings which
meet Federal Specification FF-B-171A. Special permanent lubricants perform over a broad temperature range: -20ºF (-28.9ºC) to 250ºF (121.1ºC).
Consult KOOLTRONIC for motors designed to meet military or extreme environmental specifications.
POWER: 115 VAC or 230 VAC, 50/60 Hz is standard. For multi-phase power, other voltages and frequencies or brushless DC applications, consult
KOOLTRONIC.
GRILLE:All units include attractive 19
and complies with OSHA and UL safety standards.
PERMANENT FILTERS: Designed to last the life of the unit, the filters included with all packaged blowers consist of a multi-layer grid of sturdy,
corrugated aluminum in a one-piece aluminum frame. Adhesive coated to trap particulate matter, they are easy to remove, wash and treat with
KOOLTRONIC A-16, an adhesive-rejuvenating spray. Filters must be kept free of accumulations, to prevent reduction or loss of performance and/or
damage to equipment.
POWER CORD: All 115 VAC, 50/60 Hz units are supplied with a minimum of 36
internally grounded and securely locked to the case by a strain relief bushing. 230 VAC, 50/60 Hz blowers are supplied without a plug. Special lengths
and/or plugs are available.
EXHAUST GUARDS: Included on all packaged blowers.
''
[431.8mm] blower cabinet to 19''[482.6mm] panel width.
''
[482.6mm] wide stainless steel grilles with knurled captive fasteners for easy removal. Grille area is 65% open
''
[914.4mm] type SJT three-wire cord with molded plug included,
A CCESSORIES AND OPTIONS
ADAPTERS: (Set of two) These extend the width of any 19
to permit mounting in a cabinet designed for 24
a plate of mirror-finish stainless steel to match KOOLTRONIC Standard Grilles.
These adapters are non-structural. Therefore, Packaged Blowers must be supported at the rear, due to their weight.
AIRFLOW SWITCH: See accompanying literature for more information.
EMI/RFI SHIELDING: See EMI/RFI-Shielded Twin Packaged Blowers.
FILTER RECOATING ADHESIVE: This compound is a superior product for recoating all permanent filters after washing. The adhesives penetrate
dirt layers to keep the filter surface tacky for longer effective performance between washings.
Part No. A-16 - one pint container.
FILTERS FOR REPLACEMENT:All KOOLTRONIC filters consist of a multi-layer grid of sturdy corrugated aluminum, securely held in a one-piece
aluminum frame. Filters are required wherever air is drawn into an electronics enclosure or related cooling equipment to keep internal parts as clean as
possible.
A non-drying adhesive coating traps a high percentage of particulate matter. These washable, reusable filters are designed to last the life of the cooling
unit. Replacements are available for those which become damaged or otherwise non-serviceable.
KDP700, 726, 728, 730 Part No. 7001F (16.63
KDP875, 876, 878, 885 Part No. 8751F (16.63
''
[609.6mm] units. The EIA-notched adapters are covered by
''
x 6.63''x 0.50''[422.3mm x 168.4mm x 12.7mm])
''
x 8.38''x 0.50''[422.3mm x 212.9mm x 12.7mm])
*
''
[482.6mm] KOOLTRONIC Packaged Blower
Adapter
Cover plate
*
Contact KOOLTRONIC for information.
A CCESSORIES AND OPTIONS
Dimensions, inches [metric], are for
reference only and are subject to change.
1.25
[31.8mm]
0.38
[9.7mm]
0.44
[11.2mm]
0.75
[19.1mm]
0.63
[16.0mm]
1.50
[38.1mm]
.375 x .187
[9.5mm x 4.7mm]
SLOT
1.75
[44.5mm]
0.06
[1.5mm]
Tap hole for #8-32
or drill a .187 [4.7mm]
DIA. HOLE
0.75
[19.1mm]
.625 [15.9mm] DIA. HOLE
BLACK
N.O.
L
SJ CORD
WHITE
COMMON
RED
N.C.
DIRECTION
OF AIRFLOW
21
o
11
o
*
(continued)
GRILLE ASSEMBLIES: These assemblies are ideal for venting applications on the enclosure. These attractive grilles are made of mirror-finish
stainless steel. All are 19
''
[482.6mm] wide. They are 65% open, comply with OSHA and UL safety standards, and include knurled captive fasteners for
OTHER V OLTA GES AND FREQUENCIES
SPECIAL EXTERNAL PAINT FINISHES
SPECIAL LINE CORD OR CONNECTORS
*
Contact KOOLTRONIC for information.
KOOLTRONIC also designs and manufactures a variety of Packaged Blowers to meet unique specifications. We invite your inquiries about our
modification and custom-design capabilities.
AIRFLOW SWITCH
Protects equipment against damage
caused by loss of cooling airflow, by
activating an alarm or turning off
power. The switch can be mounted on
any suitable surface which allows the
stainless steel air vane to be placed in
the critical airstream. This switch is a
single-pole double-throw type, with
normally open and normally closed
Refer to the chart consult KOOLTRONIC
Engineering for assistance.
For other switch orientations or where
air velocity cannot be measured by
conventional means, KOOLTRONIC
can supply additional individual or sets
of air vanes to determine the optimum
size.
contacts.
The UL rating for the rotary snap action
switch is 5 amps at 250 volts AC. A
36
''
[914.4mm], three wire SJT power
cord is provided, allowing connection
to normally open or normally closed
circuits.
The choice of air vanes is determined
by location and orientation in the
airstream, and the normal operating air
velocity at the point of installation.