KPR701 EMI/RFI SHIELDED TWIN
PACKAGED BLOWER
PERFORMANCE GRAPHS
STANDARD FEATURES
Airflow vs. static pressure curves are shown for 60
Hz and 50 Hz (broken line) inputs. Static pressure
is in inches of water.
ACCESSORIES
AND OPTIONS
Adapters
Airflow Switch
Automatic Speed Control
Filter Recoating Adhesive
Grille Assemblies for replacement
Other voltages and frequencies
Replacement Filters
Special external paint finishes
Special line cord or connectors
Capacity: 330 CFM
Shielding available for all KOOLTRONIC
Packaged Blowers
Heavy-gauge steel shell with EIA-notched
flanges and baked powder finish
Attractive 19-inch [482.6mm] stainless steel grilles
UL/CSA ball-bearing motors
Filter
Dual inlet quadruplex blower design for
maximum airflow
Inlet air cools motor for longer life
Exhaust guards included
Three foot [0.9m] (minimum) 3-wire
power cord
DIMENSIONS AND DISCHARGE LOCATIONS
inches [metric]
TECHNICAL DATA
*
Approximate
CFM @ Cutoff RPM
Amps Weight
Model** 0" S.P. S.P. Nominal Run. L.R. Watts Lbs. Kg.
KPR701 330 0.42 1600 1.1 1.6 85 23 10.5
*115V, 60 Hz. operation
**A, B, C & D
HOW TO ORDER
Specify model number, adding discharge suffix A, B, C or D. Example: KPR701A. For 230 VAC operation, add a 2 after the K. Example: K2PR701A.
Dimensions, inches [mm], are for reference only and subject to change.
kpr701.qxd 12/23/15
KPR701
.50
.25
STATIC PRESSURE
.05
20
0
100
200 300 400
AIRFLOW C.F.M.
A Discharge
8.75
[222.3]
19.00
[482.6]
9.50
[241.3]
4.75
[120.7]
5.50
[139.7]
17.00
[431.8]
[222.3]
8.75
1.81
[46.0]
3.25
[82.6]
[482.6]
7.00
[177.8]
0.94
[23.9]
4.00
[101.6]
C Discharge
19.00
4.75
[120.7]
9.50
[241.3]
B Discharge
8.75
[222.3]
3.25
[82.6]
17.00
[431.8]
19.00
[482.6]
[241.3]
0.25
[6.4]
9.50
3.25
[82.6]
7.00
[177.8]
4.75
[120.7]
17.00
[431.8]
5.50
[139.7]
D Discharge
8.75
[222.3]
3.25
[82.6]
19.00
[482.6]
[241.3]
9.50
0.94
[23.9]
4.75
[120.7]
7.00
[177.8]
1.19
[30.2]
3.25
[82.6]
17.00
[431.8]
3.25
[82.6]
7.00
[177.8]
DESCRIPTION
The KOOLTRONIC EMI/RFI shield conforms to the latest technology in attenuation of electromagnetic interference. The KPR Series combines this shield
with Standard Twin Packaged Blowers. In addition, the shielded front end can be incorporated into the entire broad line of KOOLTRONIC Packaged
Blowers, as an option, with a few dimensional changes. This same front end can also be used as an enclosure accessory. See EMI-Shielded Filter-Grille
Assemblies.
KOOLTRONIC achieves a high degree of EMI attenuation by the use of proven techniques and scrupulous production and quality controls. The honeycomb
element and copper and tin-plated iron wire gasketing are sandwiched between a plated unitized steel frame and the plated flange welded to the cabinet.
These are rigidly clamped in place with precision-torqued Allen head capscrews. This permits high clamping pressures for maximum EMI attenuation
without distortion. The use of metallic chromate finish on the steel frame and corrosion-protected aluminum honeycomb provides uniform high attenuation
and minimum internodal resistance. No conductive plastics are used. A full mounting flange provides a continuous conductive surface for interface with the
user’s cabinet.
KOOLTRONIC also offers a full line of EMI-Shielded Filter-Grille Assemblies, independent of the blower package. These assemblies can be used at
remote inlet or discharge locations, for EMI-protected air paths.
EMI/RFI-shielded fronts, in packaged blowers or used separately, do not reduce air delivery.
STANDARD FEATURES
RUGGED CONSTRUCTION: Precision-engineered heavy-gauge steel construction insures blower will stand up under tough industrial applications.
EIA-notched flanges extend 17'' [431.8mm] blower cabinet to 19'' [482.6mm] panel width.
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'' [482.6mm] wide stainless steel grilles with knurled captive fasteners for easy removal. Grille area is 65% open and
complies with OSHA and UL safety standards.
FILTERS: 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'' [914.4mm] three-wire cord with molded plug included, 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.
Magnetic Field
Plane Wave
e
K
OOL
0
00
90
80
0
60
50
0
30
0
0
0
z
z
z
z
z
Y
A
C
E
G
B
D
F
H
EMI-SHIELDED FILTER-GRILLE ASSEMBLIES: (A) Captive
Thumbnut, (B) Grille, (C) Plated Steel Retainer Frame,
(D) Aluminum Filter, (E) Honeycomb, (F) EMI Gasket (Plated
knitted wire mesh), (G) EMI Frame (Plated steel rear surface),
(H) Plated steel surface.
KPR701 EMI/RFI SHIELDED TWIN
PACKAGED BLOWER
Attenuation L
11
1
7
4
2
1
10KH
100KH
d
10MH
FREQUENC
100MH
Independent
1000MH
ACCESSORIES AND OPTIONS*
ADAPTERS: (Set of two) These extend the width of any 19'' [482.6mm] KOOLTRONIC Packaged Blower to
permit mounting in a cabinet designed for 24'' [609.6mm] units. The EIA-notched adapters are covered by 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.
Models
Mirror Height
Finish Inches [metric]
KA24-10M 10.50 [266.7]
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 contacts. To order integrated airflow switch add -XX10 to model number. To order as external accessory, see Kooltronic website.
AUTOMATIC SPEED CONTROL: The Kooltronic Fan and Blower Automatic Speed Control (Part Number KSC100) is a solid state “smart” controller packaged
in a NEMA 1 type enclosure for remote mounting. The allowable input power supply range is 95 to 250 Volts, 47 to 63 Hz. It is furnished standard with an
IEC 320 connector, a power supply fuse and a temperature sensor. Additional temperature sensors are optional.
The controller will operate single or multiple fans or blowers of compatible voltage and frequency up to a combined load of 6 Amps. The controller may be
operated by either a control voltage signal of 0 to 10 VDC, a control current signal of 0 to 20 mA or one to three temperature sensors. With multiple
temperature sensors the controller will respond to the highest sensed temperature.
The control circuit board is furnished with a terminal strip for field connecting the sensor and fan wires. A pressure type strain relief connector is furnished in
the enclosure. If required by installation or by code, this connector can be replaced with a 1/2-inch [12.7mm] trade size conduit connector.
A wide variety of control logic options can be field programmed into the controller by means of a board mounted DIP switch. These include fan idle or starting
speed at 30%, 40%, 50% or 60% of supply voltage, fan on or off below the idle setting, control temperature setting at 86°F (30°C), 95°F (35°C), 104°F
(40°C), 113°F (45°C), and temperature differential settings of 7°F (4°C) and 18°F (10°C). The selectable fan on/off feature is operative when the temperature(s)
drop below the control temperature setting.
Consult factory for use with compatible Kooltronic fans or blowers.
FILTER RECOATING ADHESIVE: This compound is a superior product for recoating filters after washing. The adhesives penetrate dirt layers to keep
the filter surface tacky for longer effective performance between washings.
Part No. A-16.
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 filters are reuseable, they may be washed and recoated with the
appropriate filter recoating adhesive. Replacements are available for those which become damaged or otherwise non-serviceable.
Part No. 8751F (16.63" x 8.38" x 0.50" [422.4mm x 212.9mm x 12.7mm])
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 easy
attachment and removal.
Model
Filter
Grilles Grilles Height
Assemblies Assemblies Inches [metric]
KPG1050-19 KFG1050-19 10.50 [266.7]
Overall depth, including fasteners:
0.50'' [12.7mm] 0.75'' [19.1mm]
OTHER VOLTAGES 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.
KPR701 EM/RFI SHIELDED TWIN
PACKAGED BLOWER
For assistance in model selection, contact KOOLTRONIC or use one of our design aid software programs, available FREE.
Cover plate
Adapter
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