Corrosion Inhibiting System; Nitrogen Generator; Models; Power Requirements - FireFlex Systems Inc. N2 BLAST Owner's Operation & Maintenance Manual

2. Corrosion Inhibiting System

2.1 NITROGEN GENERATOR

®
The N Blast Corrosion Inhibiting System produces 98%+
2
pure Nitrogen on demand and introduces it to the preaction
Fire Protection System. In doing so, Oxygen and moisture
are displaced from the piping through the AutoPurge
System™. The N Blast
2
effectively inhibits Electrochemical,
Microbiologically Influenced Corrosion (MIC), as well as
freezeups and ice plugs.
All personnel involved with installation, operations, and
maintenance of the N Blast
2
practices, OHSA, and local health/safety code regulations
during the installation, operation, and maintenance of the
unit.

2.2 MODELS

FPS-250 "Type 1" Nitrogen Generator
Handles up to 250 gallons of sprinkler pipe capacity
Fully automatic with pressure switch
Pre-filters and pressure regulator
Control panel with gauges, hourmeter and power
switch
FPS-750 "Type 1" Nitrogen Generator
Handles up to 750 gallons of sprinkler pipe
capacity
Fully automatic with pressure switch
Pre-filters and pressure regulator
Control panel with gauges, hourmeter and power
switch

2.3 POWER REQUIREMENTS

Connect the N -BLAST® to an electrical supply following all
2
local safety regulations. Ensure the unit is supplied with
110V/60Hz power rated at 20 amp service. The unit must
be grounded.
FM-076B-0-6A
F F
IRE LEX
Integrated Fire Protection System
O ' O
WNER S PERATION
®
Nitrogen Generation System
Galvanic
®
must follow safe working
®
N B
LAST
2
& M M
AINTENANCE ANUAL
®
2.4 N Blast
2
South-Tek Systems utilizes Membrane technology in
the N2-Blast® Corrosion Inhibiting Systems in order to
efficiently separate Nitrogen molecules from the air we
breathe. Membrane technology, used in our smaller
applications, has a simple air flow design, is wall-
and
mounted and easy to service. PSA technology is more
cost effective and energy efficient in larger Fire
Protection Systems, those requiring more Nitrogen to
compensate for the NFPA "acceptable leak rate".
2.5 BlastOff
™
Unless the leak rate is catastrophic, the supervisory low
pressure alarm on the FPS will not activate. Minor leaks
cause the air compressor and N
excessively in order to maintain supervisory pressure.
The unnecessary additional run-time decreases the
lifespan of the equipment. The Patent Pending
BlastOff Leak Detection System is designed to detect
™
significant leaks before they compromise the Fire
protection System and the Nitrogen Generation System.
It has an internal audible alarm and dry contact for
wiring into the Building Monitoring System (BMS) and
will also alarm if the air compressor or the N
not working properly.
®
2.6 N Blast
2
High purity Nitrogen must be equally distributed
throughout the entire sprinkler piping system in order to
effectively inhibit corrosion. The Patent Pending
AutoPurge System™provides a low volume, constant
purge of Nitrogen within sprinkler piping. The rate in
which gas is evacuated from the sprinkler piping is
within NFPA guidelines and allows breathing to occur.
The AutoPurge System™ also assists in drying out the
residual water from a hydrotest. Computational Fluid
Dynamics modeling proves that this is the most
effective way to ensure that high purity Nitrogen
reaches all branches within the sprinkler piping. Install
one AutoPurge System™ per system at a high point .
2.7 Nitrogen generator

Air Pressure Maintenance Device

Nitrogen air pressure maintenance device is a Viking
Model D-2 air pressure maintenance device. It is used
to regulate the nitrogen pressure in the sprinkler piping
at the specified system pressure for F
®
Blast Double interlock preaction system.
The Viking Model D-2 air pressure maintenance device
is a pressure regulator that automatically reduces the
supply air pressure to a preset requirement when
connected to a constantly maintained air supply.
®
Nitrogen generator
Leak Detection System
2
AutoPurge System™
®
Blast to run
-Blast is
2 ®
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F N
IRE LEX
2
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