Copyright © 1996 - Bebco Industries, Incorporated - All Rights Reserved
Unit Specifications
Shipping Dimensions:
28" h x 28" w x 70" d
Shipping Weight (Lbs):
360
Operating Temp Range:
-40
°
F - 120
°
F
Power Requirements:
208 / 240 VAC 1Ø, 20 A
Safe Pressure Setpoint:
0.25" - field adjustable
Alarm Setpoint:
0.15" - field adjustable
Average CFM:
* 65.24.
Maximum CFM:
1370 feet/min.
Normal Sound Level:
** 60 db min. / 70 db max.
Fresh Air Intake:
12" Diameter
Field Wiring Conduit Entries:
3/4" FPT
Alarm Contact Rating:
15 Amps @ 120 VAC
Division 1 Unit Motors:
Rated Cl. I, Div. 1, Gr. C & D
Division 2 Unit Motors:
Rated Cl. I, Div. 2, Gr. C & D
Primary Motor:
3Ø Inverter Duty, T3, 100 Hz
Secondary Motor:
1Ø Perm. Split Cap., T3, 60 Hz
Primary Motor RPM:
3000 Max.
Secondary Motor RPM:
1725 Max.
* Average CFM through a 21 square feet opening
** Normal sound level tested in acoustic sound chamber
with primary fan engaged and door sealed
Material Specifications
NEMA 4 Blower Housing:
* Painted 14 Ga Galv. Steel
NEMA 4X Blower Housing:
*Painted 14 Ga 316 SS
Fan Venturis:
Painted Carbon Steel
Fan Blades:
Nonsparking Alum.
Pressure Gauge:
Alum. w / Enamel Finish
Tube Fittings:
316 SS & Nylon
Unit & Device Nameplates:
Silkscreened Lexan
®
Model Number Nameplate:
Silkscreened SS
Cover Plate Fasteners:
SS Screws & Bolts
Access Door Fasteners:
Cast Zinc Body / Zinc Bolt
Elect. Enclosures & Fittings:
Cast Zinc & Aluminum
Electrical Wiring:
Brass MI Cable & Fittings
w/ PVC Jacket
* Paint Finish Specifications:
2 mil epoxy primer & 2 mil white textured urethane finish
Lexan
®
is a registered trademark of the General Electric Corporation
Mechanical Description
The body of Model RDP-12 is a seal-welded NEMA 4 or
4X blower housing that features one (1) full size access
door, three (3) intake openings, and two (2) opening
covers. The housing is designed for remote mounting in
combination with Bebco Models ADGA, DCF, DE and/or
DN ductwork for installation on the wall or roof of the
protected building. In addition, the housing can be supplied
with an optional emergency remote control junction box
for ECO or ESD-IS barrier applications.
The blower housing is fitted with primary and secondary
fans mounted in a compact in-line arrangement with the
secondary fan mounted directly behind the primary fan.
Each motor is connected with approved MI (mineral
insulated) cable to separate disconnect switches mounted
external to the blower housing. The explosion proof
control enclosure contains a variable speed drive, a VFD
interface card and an array of control switches and
indicators. The explosion proof control enclosure can be
mounted on any flat wall surface inside or outside of the
protected building. A 4" building pressure indicator,
scaled to inches of water and color coded to indicate low,
high and safe building pressures, is mounted above the
explosion proof control enclosure on a stainless steel
plate. The building pressure indicator features a 1/4" tube
fitting and sintered vent for references of building and
atmospheric pressures.
Intake Stack
Connection
Intake Stack
Connection
Gasket
Door Hinge
Mounting
Bracket
Blower Housing
Body
Door Frame
Gasket
Secondary Fan
Motor
Secondary Fan
Motor Wiring
Intake Stack
Connection w/ Blind
Cover Plate
Primary Fan
Motor
Primary Fan
Motor Wiring
Factory Installed
Primary &
Secondary Fan
Motor Disconnect
Switches, Explosion
Proof Fittings,
Conduit & Wiring
Note: Fan
disconnects can be
installed on opposite
side if requested at
time of order
Primary
Fan Engaged
Indicator
Primary
Fan Control
Switch
Secondary
Fan Control
Switch
Pressure Loss
Alarm Indicator
Control Enclosure
face view with door closed
Blower Housing
top view with door removed
Building
Pressure
Indicator
Building
Pressure
Indicator
Mounting
Bracket
Alarm System
Bypass Control
Switch
Control Enclosure
rear view
Building
Pressure
Indicator
Low Port
Flame Arrestor
High Port
Flame Arrestor
Control
Enclosure
Explosion Proof
Housing
Building
Pressure
Connection Port
(High Port)
Atmospheric
Pressure
Connection Port
(Low Port)
Control
Enclosure
Mounting Foot
(typical 4)