0.

12kg AUTO EUTECTIC FIRE EXTINGUISHER

PART NUMBERS
BA24320A-1 BA24320H-1
BA24320B-1 BA24320J-1
BA24320C-1 BA24320K-1
BA24320D-1 BA24320L-1
BA24320E-1 BA24320M -1
BA24320F-1 BA24320N -1
BA24320G-1 BA24320P -1

COMPONENT MAINTENANCE
MANUAL WITH
ILLUSTRATED PARTS LIST

STATEMENT OF INITIAL CERTIFICATION

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

RECORD OF REVISIONS

Retain this record in front of manual. On receipt of revisions, insert revised pages in
manual and enter revision number, date inserted and initial.

Re Issue Inserted Rev. Issue Inserted

v. Date Date By No. Date Date By
N
o.1 OCT ‘02

2 MAR‘05 MAR ‘05

FFE

3 APR ‘08 APR ‘08

FFE

4 AUG ‘13 AUG ‘13

FFE

5 OCT ‘13 OCT ‘13

FFE

6 SEP ‘16 SEP’16 FFE

7 FEB ’17 FEB ’17 FFE

8 MAR’17

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

RECORD OF TEMPORARY REVISIONS

Temporary Page Issue By Date By

Rev. No. Number Date Removed

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

SERVICE BULLETIN LIST

Service Date Service Date

Bulletin Incorporated Bulletin Incorporated

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

LIST OF EFFECTIVE PAGES

Subject Page Date

Title Page 1 Mar 2017
Record of Revisions 1 Mar 2017
Record of Temporary Revisions 1 Mar 2017
Service Bulletin List 1 Mar 2017
List of Effective Pages 1 Mar 2017
Table of Contents 1 Mar 2017
Introduction 1 Mar 2017
Description and Operation 1 Mar 2017
2 Mar 2017
3 Mar 2017
4 Mar 2017
Testing and Fault Isolation 4 Mar 2017
Storage & Inspection 4 Mar 2017
Installation 5 Mar 2017
Extinguisher Maintenance & Inspection 5 Mar 2017
Disassembly 6 Mar 2017
Cleaning 6 Mar 2017
Repair 6 Mar 2017
Illustrated Parts List 7 Mar 2017
8 Mar 2017
9 Mar 2017
10 Mar 2017

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

TABLE OF CONTENTS

Page

DESCRIPTION AND OPERATION 1

TESTING AND FAULT ISOLATION 4

STORAGE AND INSPECTION 4

INSTALLATION 5

EXTINGUISHER MAINTENANCE INSPECTION 5

DISASSEMBLY 6

CLEANING 6

REPAIR 6

ILLUSTRATED PARTS LIST 7

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

INTRODUCTION

1. General

This manual has been complied in accordance with the requirements set out in specification
ATA 100. It is intended to provide such data as is necessary for an approved maintenance
operator to inspect, clean and check weigh an extinguisher.

2. Manufacturing

The Fire Extinguisher Assy. is manufactured and product supported by:

Fire Fighting Enterprises Ltd Percival Aviation Ltd

9 Hunting Gate Sapphire House
Hitchin 15 Barnes Wallis Road
Hertfordshire Segensworth
SG4 0TJ Fareham
England Hampshire
PO15 5TT
England
Telephone: +44 (0) 1462 444740 +44 (0) 1489 569000
Fax: +44 (0) 1462 444789 +44 (0) 1489 569050

3. Layout

This manual contains a general description and operation followed by data for
maintenance, repair, disassembly and assembly of the Fire Extinguisher. This is
followed by an Illustrated Parts List, which gives detailed information.

4. Revision Service

This manual will be updated as required by revisions. Service Bulletins may be issued
separately. Their effect on the manual will however, be made evident by re-issue of the
Service Bulletin List as appropriate.

5. Shop Verification

This manual has been shop verified and has accomplished all disassembly, assembly,
testing and troubleshooting by actual performing the function covered in this manual or
equipment of identical configuration.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

1. DESCRIPTION AND OPERATION

A. Description

(1) This manual contains maintenance and overhaul instructions for the 0.12kg (0.26lb)
series of Automatic Fire Extinguishers.

(2) The Automatic Fire Extinguisher vessel contains extinguishing agent FE-36 and pressurised
with Oxygen Free Nitrogen. The Extinguisher is designed to be installed within Aircraft
Toilet Cabinets, in a fixed position and has the ability to detect and suppress fires. Each
Extinguisher consists of a spherical container on which the pre- formed arm/arms, Mounting
Bracket and fill boss are mounted. Each arm terminates in a special detector/discharge
nozzle, which will discharge the Extinguisher contents when a predetermined temperature is
reached.

(3) Each container comprises of two brass hemispheres, brazed together to form a sphere. Each
hemisphere is pre-drilled in the appropriate position, to accommodate the discharge
arm/arms and fill port. When assembled, the Extinguisher is filled with the appropriate type
and amount of extinguishant via the fill valve in the fill port. It is then permanently sealed by
the Eutectic slug/slugs and either a blanking plug or pressure indicator, fitted to the
Extinguisher fill port.

(4) The arm/arms are pre-formed to suit the Aircraft installation requirements and must not be
adjusted as this may stress the arm-to cylinder attachment points. The arm/arms terminate
with a special detector/discharge nozzle, which consists of a heat sensitive capsule (slug).
The capsule, in its passive mode, prevents leakage of extinguishant from the Extinguisher.
In the active mode, the heat sensitive capsule melts at a predetermined temperature and
permits the flow of extinguishant.

(5) The pressure indicator (if fitted) is permanently mounted on the fill port. A needle in the
GREEN sector indicates a serviceable Extinguisher

(6) Variations

The procedures described in this manual are applicable to all the 0.12kg series of
Automatic Fire Extinguishers. The part number defines the Extinguisher, type of
extinguishant, the number of the arms and if fitted with blanking plug, pressure indicator
on the fill boss.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

(7) Installation

CAUTION: REPOSITIONING OR RESHAPING OF THE EXTINGUISHER

ARM/ARMS CAN WORK HARDEN THE ARM MATERIAL. THIS
MAY STRESS THE ARM/CYLINDER JOINT AND THEREFORE
MUST BE AVOIDED. THE ARM/ARMS ARE PRESSURIZED WITH
EXTINGUISHANT.

Automatic Fire Extinguishers in the 0.12kg series, are designed to be installed in

Aircraft Toilet Cabinets to protect the waste (trash) bin area against fire. The
detector/discharge nozzle being positioned such that a waste bin fire will activate the
Eutectic capsule allowing discharge of extinguishant into the waste bin. In order to
afford easy service checks, the pressure indicator (if fitted) should be readily visible.
The Extinguisher must be correctly orientated and mounted securely by its integral
mounting bracket.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

B. Operation

(1) In the passive mode, the Extinguisher remains in situ in the aircraft awaiting the
predetermined temperature to activate the Extinguisher. When the operating
temperature is reached the heat sensitive capsule at the discharge end of the
Extinguisher arm/arms, melts around its periphery and is ejected from the arm thus
allowing full discharge of the extinguishant. On discharge, the pressure indicator (if
fitted) will fall to zero.

C Technical Data
(1) Weights
EXTINGUISHER FILLED AND CHARGED
The filled and charged weight for each extinguisher is measured during manufacture and
recorded on the extinguisher data label.

EXTINGUISHANT 125g (4.4oz)

Fill tolerance +/- 5g (+/- 0.176oz)

NOTE: The extinguisher weight will vary according to cylinder fabrication, the number
of arms, fill tolerance of extinguishant and, if fitted, pressure indicator.
Contact product support if a budget weight is required for installation design.

(2) Dimensions

Max Dimensions vary according to part number. Typical max dimensions inclusive of arm,
pressure indicator and bracket, part number BA24320A-1:- are

104mm x 75mm x 100mm (4.1 x 3.0 x 3.95 inches)

Bracket mounting holes

5.5mm diameter at 86.5 centres (0.21 inch diameter at 3.4 inches centres.

Contact product support if the actual dimensions are required for a particular part number.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

(3) Limitations of Use

Operating Temperature Range +76oC – +79oC (+170oF – +175oF)

Survival Temperature Range -53oC – +76oC (-65oF – +170oF)

Mounting Attitude Restricted. See Extinguisher for orientation.

(4) General

Vibration / Crash / Shock Tested to Boeing Specification D6-10853 Fig 11 &

D6-44599 and DO160F section 7 and section 8.

Humidity Mil-E-5262C para. 4.4.1 Procedure 1.

Compass Safe Distance 0.34m (12 inches)

Altitude Rating 15,240 metres (50,000 FT)

Life On Condition.

2. TESTING and FAULT ISOLATION

A. List of Materials

NOTE: The Extinguishers described in this manual are considered non- repairable with the
exception of check weight.

Item Identification Source

High Resolution Scales ---- Local

3. STORAGE & INSPECTION

CAUTION: DO NOT STORE EXTINGUISHERS WHERE THE MAXIMUM OR

MINIMUM OPERATING TEMPERATURE MAY BE REACHED.

A. Extinguishers can be stored in any position, preferably in a dry atmosphere and at a

temperature of 20ºC (68ºF). During storage, extinguishers without obvious damage and not
discharged should be weight checked every 18 months.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

4. INSTALLATION.

CAUTION: DO NOT REPOSITION OR RESHAPE EXTINGUISHER ARM/ARMS AS

THIS CAN WORK HARDEN THE ARM MATERIAL. NOTE THE
EXTINGUISHER ARM/ARMS ARE PRESSURIZED WITH
EXTINGUISHANT.

A. Extinguishers should be installed in the appropriate position within the aircraft toilet
compartment cabinet structure, with the detector discharge arm/arms run to the area to be
protected.

B. After the Extinguisher has been installed, check to ensure:

(1) The orientation of the Extinguisher is correct.

(2) Extinguisher Mounting Bracket is secured to the appropriate aircraft mounting structure.

(3) There are NO kinks or extraneous sharp bends in the arm/arms.

(4) If fitted, the Pressure Indicator is showing FULL, or the needle is in the GREEN sector.

5. INSTALLED EXTINGUISHER MAINTENANCE & INSPECTION

A. Maintenance should be carried out at regular intervals. Extinguishers should be checked for
obvious damage i.e. scored or dented containers, pinched or damaged arm/arms, empty or
low pressure indication, are all cause for rejection. On installed units ensure detector
discharge nozzles are correctly sited and free from contaminates and waste material.

B. CAUTION: REPOSITIONING OR RESHAPING OF THE EXTINGUISHER

ARM/ARMS CAN WORK HARDEN THE ARM MATERILA AND
THEREFORE MUST BE AVOIDED. THE ARM/ARMS ARE
PRESSURIZED WITH EXTINGUISHANT.

Extinguishers are designed to be left in the installed position. Weight check of installed
extinguishers should be carried out at intervals of 5 years. The pressure indicator needle if
in the GREEN sector indicates a FULL extinguisher. If there is any doubt in the
serviceability of an extinguisher it should be removed for weight check and inspection.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

C. Preparation for Test

(1) Have available, High Resolution Scales. High Resolution Scales = Suitable capacity,
able to measure in increments of 0.001KG and have a current calibration certificate.

D. Test Procedure

(1) Check Extinguisher assembly (1) for obvious damage i.e. Scored or dented containers,
pinched or damaged arm/arms are all cause for rejection.

(2) Extinguishers without obvious damage and not discharged, part discharged or empty
should be check weighed.

(3) Place Extinguisher assembly on the High Resolution Scales and check assembly is
within 5 grammes (0.176ozs) of that stated on the Extinguisher Data Label.
Extinguisher assemblies under the specified weight and tolerance must be rejected and
declared unserviceable.

6. DISASSEMBLY

Not Applicable.

7. CLEANING

A. Extinguisher should be clean and free from contaminates. Clean with mild soap solution,
taking care to avoid contact with labels. The outside of Extinguishers should be cleaned
with cotton wipers, removing grease and dust.

8. REPAIR

A. Extinguishers described in this manual are considered not repairable.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

9. ILLUSTRATED PARTS LIST

A. Statement of purpose of IPL

This section provides illustrations and parts breakdown of all parts of the Fire Extinguisher.

B. Explanation and usage of IPL

(1) Introduction

The introduction contains all explanatory information for the individual sections as is
necessary for the use of this IPL. The introduction also contains a list of abbreviations
used in the detailed parts list.

(2) Detailed Parts List

(a) Column FIG/ITEM

The First number in the first line of a page indicates the number of the figure
illustrating the part. The second number indicates the item number by which the
part is identifiable on the illustration. A dash number indicated that the part is not
illustrated.

(b) Column PART NUMBER

The part number column contains the original manufacturer part number. When
standard parts are used, the standard part number is listed in the column.

(c) Column AIRLINE PART NO.

This column is left blank for airline internal use.

(d) Column NOMENCLATURE

The Nomenclature column gives the name of each assembly or part. Details of an
assembly are listed immediately after the assembly and are indented on dot to the
right, to indicate relationship.

(e) Column EFF CODE

The Effectivity Code column establishes parts relationship with units or assemblies
that are essentially the same, but have minor deviations. These units or assemblies
are assigned reference letters, such as A,B,C etc. Parts that are not common to all
configurations but are associated with one or more of the coded lead items, carry
the letter or letters assigned to the lead item with which it is associated. Where a
part is common to all lead items, the effectivity column is blank

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

(f) Colum UNITS PER ASSY

This column contains the quantity of a specified catalogue sequence numbered

part required in the build sequence of only ( where more than one exists) next
higher sub-sub-assembly, sub-assembly, assembly, or installation level as
applicable. For bulk items, the letters ‘AR’ are inserted in the quantity column, to
indicate ‘As Required’. Where items are listed for ‘Reference Purpose’, ‘RF’ is
inserted.

B. List of Abbreviations

The following abbreviations have been used in this IPL:

Term Parts List Abbreviation Definition AS

Required AR ---

Assembly Assy ---

Hexaflouropropane FE-36 Fire Ext Agent

Fire Extinguisher
Fire Extinguisher Fire Ext assembly as listed on
title page
Effectivity Eff ---

Figure Fig ---

Illustrated Parts
IPL ---
List
Paragraph Para ---
---
Revision Rev

C. Service Bulletin Incorporation

Assemblies, sub- assemblies and detail parts subject to modification, deletion, addition,
or replacement by an issued Service Bulletin are annotated, to show both pre and post
Service Bulletin configuration. The term (pre SB XXX) in the Nomenclature column
designates the original configuration and the term (post SBXXX identifies assemblies
and parts after the Service Bulletin modification has been completed.

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

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BA24320K-1 BA24320L-1 BA24320M-1 BA24320N-1 BA24320P-1

Fig Part Airline Nomenclature Eff Units Per

Item Number Code 1234567 Code Assy
1-1A BA24320A-1 0.12kg FE-36 Automatic A
Fire Ext with Gauge

-1B BA24320B-1 0.12kg FE-36 Automatic B

Fire Ext with Blanking
Plug
-1C BA24320C-1 0.12kg FE-36 Automatic C
Fire Ext with Gauge

-1D BA24320D-1 0.12kg FE-36 Automatic D

Fire Ext with Blanking
Plug
-1E BA24320E-1 0.12kg FE-36 Automatic E
Fire Ext with Gauge

-1F BA24320F-1 0.12kg FE-36 Automatic F

Fire Ext with Gauge

-1G BA24320G-1 0.12kg FE-36 Automatic G

Fire Ext with G a u g e

-1H BA24320H-1 0.12kg FE-36 Automatic H

Fire Ext with Gauge

-1J BA24320J-1 0.12kg FE-36 Automatic J

Fire Ext with Gauge

-1K BA24320K-1 0.12kg FE-36 Automatic K

Fire Ext with Gauge

-1L BA24320L-1 0.12kg FE-36 Automatic Fire L

-1M BA24320M-1 0.12kg FE-36 Automatic Fire M

Ext with Blanking Plug

-1N BA24320N-1 0.12kg FE-36 Automatic Fire N

Ext with Blanking Plug

-1P BA24320P-1 0.12kg FE-36 Automatic Fire P

Ext with Gauge

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