Series 1000
One Stage, Two Blower
Automatic Pressurization Systems
Application
Operation
Features
The Series 1000 pressurization systems
are designed to provide a reliable source
of pressure for small air-supported
radomes with automatic operation, even
for unattended sites. The process of
selecting a radome pressurization system
is complex. Many factors such as design
wind speed, radome diameter and
truncation (height to diameter ratio) must
be considered. In general, the Series
1000 systems are designed for use with
small radomes up to 30 ft. (9.1m) in
diameter, operating in winds up to 100
mph (44.7 m/sec.). Other systems are
available for higher design wind speeds
and for use with larger radomes.
Normal Operation:
Under normal
operating conditions, one inflation blower
operates continually to maintain radome
pressure at approximately 5” H2O (127
mm H2O).
•
Low Pressure Operation:
If radome
pressure drops below 4.0” H2O (102 mm
nd
H2O), the 2 inflation blower will start
after a five second time delay. The
blower will operate for five minutes after
normal pressure has been restored in the
radome, then shuts off automatically. To
enhance reliability, there are two pressure
switches/circuits in parallel, either one is
capable of activating the blower. The
delay and overrun periods prevent the
blower from starting as a result of
momentary pressure variations. Audible
and visual indicators are activated when a
low pressure condition occurs, and will
shut off automatically when normal
pressure is restored.
•
Description
Each Series 1000 pressurization system
consists of a fully automatic control panel,
two identical inflation blowers, motor
starters and an air intake plenum, all
mounted on an integral skid. The entire
system is supplied as a modular, prewired unit.
The blowers are of the
centrifugal, non-overloading, backward
inclined blade type, featuring constant
pressure over a wide operating range.
Each blower is equipped with a reverse
flow check valve. The control panel and
motor starters may be remotely located
by simply extending the wiring.
Dimensional Data
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Blower motors start sequentially to
minimize emergency power demands
All blowers can be operated manually
Control circuit operates on low
voltage (24 VAC) supplied by selfcontained transformers
All blower and control circuits are
individually protected by circuit
breakers
All control circuit breakers activate
visual and audible indicators when
tripped
Terminal boards provided for all
external connections:
power,
blowers and remote status signals
A panel-mounted pneumatic test
valve simulates low pressure for
testing control panel operation
Panel mounted alarm horn with test
switch
Designed for high reliability in
accordance
with
MIL-HDK-217,
featuring:
- Dual transformers
- Dual low pressure switches
and control circuits
For Information Only Do not use for construction
or fabrication
Standard Model Specifications:
1st Blower
Model
Wind
Speed
Pressure
Motor HP
Pressure
Motor HP
Intake
Duct
1000
100 mph
44.7 m/sec.
5.0” H2O
127 mm H2O
2
5.0” H2O
127 mm H2O
2
18” Ø
45.7 cm
ENVIRONMENTAL:
• Temperature Range, operating:
-5ºF to +120ºF (-20ºC to +50ºC)
•
Temperature Range, non-operating:
-40ºF to +130ºF (-40ºC to +55ºC)
•
Weather Protection: designed for indoor
installations; control panel is NEMA 12 and also
conforms to IEC 529, Class IP65
ELECTRICAL:
• Blower Motors: 208 VAC, 3Ø, 60 Hz.
•
2nd Blower
Control Panel: 120 VAC, 1Ø, 60 Hz.
Other voltages and frequencies available to meet
specific site requirements (ex. 220/380, 230/400,
240/415, 3Ø, 50 Hz).
REMOTE STATUS SIGNALS:
• Signals are provided as 24 VAC (for optional remote
status panel use) and Form C dry contacts rated at
3A @ 120 VAC/28 VDC:
- Control Power On
- Blower 1 On
- Blower 2 On
- Pressure Low
- Tripped Circuit Breaker
- Alarm Horn
•
OPTIONS:
• Remote Status Panel: Provides pressure meter,
duplication of all control panel indicators and alarm
horn. Designed for standard 19” rack mounted
installation.
•
Air Filtration System: Tri-stage intake air filter
system for salt and particulate removal down to 1
micron in size.
•
Low Temperature Option: Extends minimum
operating temperature to -40ºF (-40ºC).
•
Stainless Steel Blower Construction
•
Emergency Generator System: Diesel engine
generator with dual-wall sub-base fuel tank, weather
housing and automatic transfer switch.
•
Engineering Services: Engineering and drafting
services are available for custom applications,
design, installations, inspections and service.
CONTROL PANEL DISPLAYS:
• Pressure: 0-20” H2O (0-508 mm)
•
Indicators (press-to-test):
- Control Power On
- Blower 1 On
- Blower 2 On
- Pressure Low
- Tripped Circuit Breaker
•
Alarm: panel mounted horn
•
Control Switches:
- Blower 1 On/Off
- Blower 2 Auto/Off/Man
- Horn Auto/Off/Test
•
Test Valve: to simulate low pressure condition
Pressure, 4-20 mA/0-20” H20
Specifications subject to change without notice.
Saint-Gobain Performance Plastics Corporation
701 Daniel Webster Highway, Merrimack, New Hampshire 03054 U.S.A.
Telephone: (603) 424-9000 Fax: (603) 424-9044
www.fabricatedsystems.saint-gobain.com
Oct 2004