Sea-Fire FG 25-75 User manual

HFC 227ea
Model FG and FD Fire Extinguishers
Installation Instructions
Owner’s Manual
This manual is an integral part of the system approval and the extinguisher must be
installed and maintained in accordance with all listed requirements.
U.S. Coast Guard Approved / FM Approved
No. 162.029 / 237 / 0
Read and comply with these instructions, warnings and limitations before installing.
Suitable for use on:
FG Models: 0F (-18C) to 130F (54C)
FD Models: 20F (-7C) to 130F (54C)
Always maintain this owner’s manual
nearby for operator reference.
Metalcraft Inc.
Sea-Fire Marine Products
9351-G Philadelphia Rd.
Baltimore, MD 21237
Tel: [phone]
Fax: [phone]
Owner’s Manual PN: 123-194, Revision F
Printed in the USA

PN: 123-194, Rev. F Page 2 of 44
WARNING
CONCENTRATED AGENT AND BY-PRODUCT OF APPLICATION TO FIRE ARE TOXIC.
AVOID BREATHING OF FUMES OR PROLONGED EXPOSURE. ACCIDENTAL DISCHARGE
DURING HANDLING OR INSTALLATION MAY CAUSE SERIOUS INJURY. BEFORE
ATTEMPTING TO INSTALL THIS DEVICE, READ AND COMPLY WITH INSTRUCTIONS,
WARNINGS, AND LIMITATIONS CONTAINED IN THIS MANUAL. DO NOT LIFT, CARRY
OR HANDLE BY SENSOR VALVE / DETECTOR. THE SENSOR / VALVE DETECTOR IS
VISUALLY DESCRIBED IN FIGURE 8 OF THIS MANUAL. DO NOT DROP. KEEP AWAY
FROM HEAT. KEEP AWAY FROM CHILDREN.
A SAFETY DATA SHEET (SDS) IS INCLUDED IN THIS MANUAL.
WARNING
PRIOR TO PERFORMING MAINTENANCE WITHIN THE PROTECTED COMPARTMENT,
ALWAYS INSTALL THE SAFETY PIN INTO THE SUPPRESSION SYSTEM TRIGGER
ASSEMBLY TO AVOID ACCIDENTAL DISCHARGE. UPON COMPLETION OF
MAINTENANCE, REMOVE THE SAFETY PIN FROM TRIGGER ASSEMBLY, AND STORE IN
DESIGNATED LOCATION AS DESCRIBED STEP 6 OF CABLE INSTALLATION SECTION OF
THIS MANUAL.
Installation Manuals currently available in English, German, Italian, and Spanish. Other
languages available from your local distributor.
Installation Handbücher momentan verfügbar auf Englisch, Deutsch, Italiener, und
Spanisch. Andere Sprachen, die verfügbar sind von Ihrem örtlichen Verteiler.
Manuales de la instalación actualmente disponible en inglés, alemán, italiano, y
español. Otros idiomas disponibles de su distribuidor local.
Manuali di installazione attualmente disponibile in inglese, tedesco, italiano e
spagnolo. Le altre lingue disponibili dal suo distributore locale.

PN: 123-194, Rev. F Page 3 of 44
Index
Section
Page(s)
Warnings
2
Application/Limitations
4
System Operations
6
Supervisory Pressure Switch
8
System Status Indicator Light
8
Pressure Relief Assembly (Burst Disk)
8
Interaction with Engines, Generators, and Powered
Ventilation (Blowers)
9
Diesel Engines or Generators, Powered Ventilation
(Blowers)
9
Gasoline Engines or Generators
9
Installation
10
Cylinder
11
Cable Assembly
13
Indicator Light
22
System Maintenance
23
Cylinder Inspection/ Cylinder Testing
23
Agent Weight Inspection
25
Pressure Gauge Inspection
26
Agent Pressure / Temperature Charts
27
Indicator Light Inspection
28
Glass Bulb (Temperature Sensor/Detector) Inspection
28
Cable Inspection
28
Specification Tables
29
Specification Table “FG” Auto
29
Specification Table “FD” Auto
30
Warranty
31
SDS –Safety Data Sheet
33
Installation Inspection Checklist
40
Contact Information
44

PN: 123-194, Rev. F Page 4 of 44
Application
HFC-227ea (CF3CHFCF3), the extinguishing agent, used in all Sea-Fire “FG” and “FD”
series fire extinguishers, is a suitable EPA accepted alternate replacement for Halon.
HFC-227ea is an electrically nonconductive and residue free extinguishing agent that
requires no cleanup.
These features and the versatility of design make the “FG” and “FD” series fire
extinguisher models ideal for a broad range of applications. These applications would
include marine, commercial and industrial use where electrical or flammable liquids
are the likely source of fire.
Sea-Fire “FG” and “FD” series have passed a rigid testing program and carry a FM
Approvals and United States Coast Guard (USCG) approval for fire suppression
applications in marine pleasure craft, un-inspected vessels, and Subchapter “T”
inspected vessels, subject to the approval of the local Officer in Charge, Marine
Inspection (OCMI). This would include many applications such as unoccupied engine
and generator rooms, electrical compartments, paint and flammable storage lockers.
Limitations
Sea-Fire “FG” and “FD” model series HFC-227ea automatic fire extinguishers are
designed and tested to extinguish Class B (flammable liquid) in enclosed compartments
only.
The Maximum (Max) area of coverage is based on the minimum (Min) height box
footprint.
Installations have the following enclosure limitations (feet):
Model
Minimum
height [ft]
Maximum
height [ft]
Max. Area of
coverage [ft2]
Max. Radial
Reach [ft]
FG 25-75
2
4
37.2
6.8
FG 76-240
2
4
119.6
12.2
FD 126-1000
4
6.8
252.0
17.7
FD 1001-1500
4
6.8
377.0
21.7
Installations have the following enclosure limitations (meters):
Model
Minimum
height [m]
Maximum
height [m]
Max. Area of
coverage [m2]
Max. Radial
Reach [m]
FG 25-75
0.61
1.22
3.45
2.07
FG 76-240
0.61
1.22
11.11
3.72
FD 126-1000
1.22
2.07
23.41
5.39
FD 1001-1500
1.22
2.07
35.02
6.61

PN: 123-194, Rev. F Page 5 of 44
Enclosure permeability and agent hold time:
The enclosure must be sufficiently sealed to retain the suppression agent for a period
of at least 15 minutes (Reference NFPA 2001, Sect 8.8.5). Any openings (doors to
hatches) will allow discharging agent to escape and will seriously affect the ability of
the agent to extinguish the fire.
Enclosure pressure relief:
The discharge of extinguishing agent creates both a negative pressure, when first
discharged, and subsequently a positive pressure in the enclosure. For proper function
of the extinguishing agent and to avoid structural damage to the enclosure –these
pressure variations must be controlled. These pressures can be relieved via a room
pressure relief device. One guide to determine the required pressure relief device is
the FSSA Guide “Estimating Enclosure Pressure and Pressure Relief Vent Area for
Applications Using Clean Agent Fire Extinguishing Systems.” (www.fssa.net)
Ambient temperature:
Sea-Fire “FG” and “FD” model series fire extinguishers are designed and tested to
operate in the following temperature ranges:
FG Models: 0F (-18C) to 130F (54C)
FD Models: 20F (-7C) to 130F (54C)
Additional information is provided about the temperature effects on the extinguishing
agent pressure in the System Maintenance Section of this manual.
Sea-Fire “FG” and “FD” extinguishers are designed to induce a minimum atmospheric
concentration of 8.7 percent within the protected compartment. This is equivalent to
a 30% safety factor on a 6.7% Minimum Extinguishing Concentration (MEC). In
addition to gasoline and diesel fuel, other flammable liquids with MEC values equal to
or below 6.7% for HFC-227ea may be protected by Sea-Fire “FG” and “FD” systems.
The specification table in this manual lists the minimum and maximum approved
compartment volume (size) allowable for each model (per NFPA 2001, UL 2166, FM
5600*).