S9555-AR-MMO-010_10_0.pdf

TECHNICAL MANUAL

FOR

FIRE EXTINGUISHING SYSTEM

DEEP FAT FRYER

DESCRIPTION, OPERATION, MAINTENANCE, INSTALLATION,

& ILLUSTRATED PARTS BREAKDOWN (IPB)

SUPERSEDURE NOTICE: THIS MANUAL SUPERSEDES S9555-AR-MMO-010,

REVISION 9 DATED 15 AUGUST 2012, AND ALL CHANGES THERETO.

DISTRIBUTION STATEMENT B: DISTRIBUTION AUTHORIZED TO U.S. GOVERNMENT AGENCIES ONLY;

ADMINISTRATIVE OR OPERATIONAL USE; 15 SEPTEMBER 2012. OTHER REQUESTS FOR THIS DOCU-

MENT SHALL BE REFERRED TO NSWC, PHILADELPHIA CODE 944.

WARNING: THIS DOCUMENT CONTAINS TECHNICAL DATA WHOSE EXPORT IS RESTRICTED BY THE

ARMS EXPORT CONTROL ACT (TITLE 22, U.S.C. SEC 2751, ET SEQ.) OR THE EXPORT ADMINISTRATION ACT OF 1979, AS AMENDED, TITLE 50, U.S.C., APP 2401 ET SEQ. VIOLATIONS OF THESE EXPORT LAWS ARE SUBJECT TO SEVERE CRIMINAL PENALTIES. DISSEMINATE IN ACCORDANCE WITH PROVISIONS

OF DOD DIRECTIVE 5230.25.

DESTRUCTION NOTICE: DESTROY BY ANY METHOD THAT WILL PREVENT DISCLOSURE OF CONTENTS

OR RECONSTRUCTION OF THIS DOCUMENT.

S9555-AR-MMO-010

REVISION10

TITLE-1 / (TITLE-2 Blank)@@FIpgtype@@TITLE@@!FIpgtype@@ @@FIpgtype@@TITLE@@!FIpgtype@@

PUBLISHED BY DIRECTION OF COMMANDER, NAVAL SEA SYSTEMS COMMAND

*0910LP1126917* 15 SEP 2012

RECORD OF REVISIONS

REV NO. DATE TITLE AND/OR BRIEF DESCRIPTION/PREPARING ACTIVITY

0 15 NOV 2008 DATE OF ORIGINAL PUBLICATION.

1 30 SEP 1987 DATE OF REVISION 1.

2 15 MAY 1990 DATE OF REVISION 2.

3 15 SEP 2001 DATE OF REVISION 3.

4 30 MAY 2005 REVISION TO INCORPORATE CHANGES RESULTING FROM

DB-2811R1C1. POC IS SUPSHIP BATH MAINE, N62786, CODE

240.

5 15 APR 2006 REVISION TO INCORPORATE TMDER # N65540-06-SA01 TO

REPLACE TYPE A AND AA CYLINDERS. REVISION AUTHO-

RIZED BY NSWCCD-SSES CODES 944 AND 621.

6 30 SEP 2009 REVISION TO INCORPORATE PRE/PRL FY09 INFO. TYPES AA,

BB, AND MODIFIED B APC SYSTEM INFO WAS DELETED

FROM THE TM.

7 15 DEC 2010 REVISION TO INCORPORATE TMDER # N65540-10-JC29 TO ADD

COMMERCIAL PART # FOR VARIOUS PARTS. REVISION

AUTHORIZED BY NSWCCD-SSES CODES 944, 946 AND 9783.

8 30 APR 2012 INCORPORATED TMDER Q90613-12-MP01 TO REVISE AND ADD

NEW PARTS INFORMATION TO THE GROUP ASSEMBLY PARTS

LIST.

9 15 AUG 2012 INCORPORATED TMDER N65540-12-MZ01 TO UPDATE PART

INFORMATION.

10 15 SEP 2012 ADDED COMBINATION REMOTE MANUAL RELEASE, PART

NUMBER 87-120110-001, IN SUPPORT OF CVN 71 RCOH.

PARAGRAPH(S) 1-4.3.1 AND 7-7.11

TABLE(S) 7-7

FIGURE(S) 1-7 AND 1-8

FOR OPTIMAL VIEWING OF THIS TECHNICAL MANUAL THE PAGE LAYOUT IN ADOBE ACROBAT

READER SHOULD BE SINGLE PAGE. CONTINUOUS PAGE DISPLAY CAN CAUSE PROBLEMS WITH

LINK REFERENCES AND THE BOOKMARKS.

S9555-AR-MMO-010

RECORD OF REVISIONS-1 / (RECORD OF REVISIONS-2 Blank)

RECORD OF REVISIONS-2

@@FIpgtype@@BLANK@@!FIpgtype@@

FOREWORD

This technical manual provides description, operation, maintenance, troubleshooting, repair and parts list information for the Deep Fat Fryer Fire Extinguisher System. This technical manual is intended for guidance of and use by personnel operating and maintaining the equipment described herein.

This manual consists of eight chapters as follows:

Chapter 1 - General Information

Section I. Introduction

Section II. Surface Ship APC System General Information

Section III. Submarine APC System General Information

Chapter 2 - Operation

Section I. Surface Ship APC System Operation

Section II. Submarine APC System Operation

Chapter 3 - Functional Description

Section I. Surface Ship APC System Functional Description

Section II. Submarine APC System Functional Description

Chapter 4 - Scheduled Maintenance

Chapter 5 - Troubleshooting

Chapter 6 - Corrective Maintenance

Chapter 7 - Illustrated Parts Breakdown

Section I. Introduction

Section II. Group Assembly Parts List

Chapter 8 - Installation

Section I. Surface Ship APC System Installation

Section II. Submarine APC System Installation

Ships, training activities, supply points, depots, Naval Shipyards and Supervisors of Shipbuilding are requested to arrange for the maximum practical use and evaluation of NAVSEA technical manuals. All errors, omissions, discrepancies and suggestions for improvement to NAVSEA technical manuals shall be forwarded to:

COMMANDER

CODE 310 TMDERs

NAVSURFWARCENDIV NSDSA

4363 MISSILE WAY BLDG 1389

PORT HUENEME, CA 93043-4307

on NAVSEA/SPAWAR Technical Manual Deficiency/Evaluation Report (TMDER), NAVSEA form 4160/1. All feedback comments shall be thoroughly investigated and originators will be advised of action resulting there-from. One copy of NAVSEA form 4160/1 is at the end of each separately bound technical manual 8-1/2 x 11 inches or larger. Copies of NAVSEA form 4160/1 may be requisitioned from the Naval Systems Data Support

FOREWORD-1

Activity Code 310 at the above address. Users are encouraged to transmit deficiency submittals via the Naval Systems Data Support Activity Web site located at:

https://mercury.tdmis.navy.mil/def_external/pubsearch.cfm

FOREWORD-2

TABLE OF CONTENTS

Chapter/Paragraph Page

1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SECTION I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SECTION II SURFACE SHIP APC SYSTEM GENERAL INFORMATION . . . . . . . . . . 1-2

1-2 APC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-3 PHYSICAL ARRANGEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-4 EQUIPMENT DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-4.1 APC System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-4.2 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-4.2.1 APC Storage Cylinder. . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-4.2.2 Lever Control Head. . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1-4.2.3 Cylinder Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1-4.2.4 Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-4.3 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1-4.3.1 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 1-7 1-4.3.2 Combination Remote Manual Release. . . . . . . . . . . . . . . . 1-7 1-4.3.3 Detector Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1-4.3.4 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 1-7 1-4.3.5 Cable Sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1-4.3.6 Corner Pulleys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1-4.4 Distribution Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-4.4.1 Discharge Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-4.4.2 Vent Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-4.4.3 Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-4.4.4 Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-4.5 Tools and Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-5 REFERENCE AND DESCRIPTION DATA. . . . . . . . . . . . . . . . . . . . . . . 1-20

SECTION III SUBMARINE APC SYSTEM GENERAL INFORMATION . . . . . . . . . . . . 1-21

1-6 APC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 1-6.1 Extinguishing Means. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 1-6.2 Activation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

1-7 PHYSICAL ARRANGEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

1-8 EQUIPMENT DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 1-8.1 Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 1-8.2 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 i

TABLE OF CONTENTS - Continued

1-8.2.1 APC Storage Cylinder. . . . . . . . . . . . . . . . . . . . . . . . 1-23 1-8.2.2 Lever Control Head. . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1-8.2.3 Cylinder Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1-8.2.4 Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1-8.3 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 1-8.3.1 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 1-24 1-8.3.2 Cable Release System and Manual Remote Operator. . . . . . . 1-24 1-8.3.3 Detector Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . 1-29 1-8.3.4 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 1-29 1-8.3.5 Cable Sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 1-8.3.6 Ball Bearing Control Cable. . . . . . . . . . . . . . . . . . . . . 1-29 1-8.3.7 Corner Pulleys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

1-8.4 Distribution Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1-8.4.1 Discharge Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1-8.4.2 Vent Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1-8.4.3 Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1-8.4.4 Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

1-8.5 Tools and Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

1-9 REFERENCE AND DESCRIPTION DATA. . . . . . . . . . . . . . . . . . . . . . . 1-40

2 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

SECTION I SURFACE SHIP APC SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . 2-1

2-1 PREOPERATIONAL CONDITIONS AND SETUP. . . . . . . . . . . . . . . . . . . 2-1

2-1.1 Operator Training. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2-1.2 Prior to Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2 OPERATING MODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2.1 Automatic Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2.2 Manual Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2.2.1 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 2-3 2-2.2.2 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 2-3 2-2.2.3 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-2.3 Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2-2.3.1 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-3 APC SYSTEM CONTROLS AND INDICATORS. . . . . . . . . . . . . . . . . . . . 2-4

SECTION II SUBMARINE APC SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . 2-5

2-4 PREOPERATIONAL CONDITIONS AND SETUP. . . . . . . . . . . . . . . . . . . 2-5

2-4.1 Personnel Training. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2-4.2 Prior to Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-5 OPERATING MODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 ii

2-5.1 Automatic Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 2-5.2 Manual Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-5.2.1 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 2-6 2-5.2.2 Manual Remote Operator. . . . . . . . . . . . . . . . . . . . . . . 2-7 2-5.2.3 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 2-7 2-5.2.4 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-6 NORMAL OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2-6.1 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-7 APC SYSTEM CONTROLS AND INDICATORS. . . . . . . . . . . . . . . . . . . . 2-7

3 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

SECTION I SURFACE SHIP APC SYSTEM FUNCTIONAL DESCRIPTION . . . . . . . . . 3-1

3-1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-1.1 Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-2 SYSTEM FUNCTIONAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2.1 Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2.2 Subsystems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2.3 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2.4 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2.5 Distribution Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-3 SYSTEM TYPES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3-3.1 Type A System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3-3.2 Type B System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-4. DETAILED FUNCTIONAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . 3-4 3-4.1 Extinguishment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3-4.2 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-4.2.1 APC Storage Cylinder. . . . . . . . . . . . . . . . . . . . . . . . 3-4 3-4.2.2 Cylinder Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3-4.2.3 Lever Control Head. . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3-4.2.4 Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-4.3 Alarm Safety, and Warning System Interface. . . . . . . . . . . . . . . . . . 3-5 3-4.4 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-4.4.1 Cable/Conduit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-4.4.2 Corner Pulley. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-4.4.3 Detector Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-4.4.4 Appliance Detector Assembly. . . . . . . . . . . . . . . . . . . . 3-5 3-4.4.5 Duct Detector Assembly. . . . . . . . . . . . . . . . . . . . . . . 3-5 3-4.4.6 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 3-7 3-4.4.7 Combination Remote Manual Release . . . . . . . . . . . . . . . 3-7 3-4.4.8 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 3-7 iii

3-4.5 Distribution Piping System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.1 Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.2 Appliance Nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.3 Duct Nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.4 Plenum Range Hood Nozzle. . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.5 Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.6 Vent Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4.5.7 Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

SECTION II SUBMARINE APC SYSTEM FUNCTIONAL DESCRIPTION . . . . . . . . . . 3-9

3-5 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-5.1 System Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-6 SYSTEM FUNCTIONAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6.1 Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6.2 Subsystems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6.3 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6.4 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6.5 Flexible Cable Release System (SSBN-726 Class Only). . . . . . . . . . . . 3-9 3-6.6 Distribution Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-7 SYSTEM TYPES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-7.1 Type B System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3-8 DETAILED FUNCTIONAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.1 Extinguishment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.2 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

3-8.2.1 APC Storage Cylinder. . . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.2.2 Cylinder Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.2.3 Lever Control Head. . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.2.4 Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

3-8.3 Safety System Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 3-8.4 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

3-8.4.1 Cable/Conduit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.2 Ball Bearing Control Cable (SSBN-726 Class Only). . . . . . . 3-14 3-8.4.3 Corner Pulley. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.4 Detector Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.5 Appliance Detector Assembly. . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.6 Duct Detector Assembly. . . . . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.7 Remote Manual Control Box. . . . . . . . . . . . . . . . . . . . . 3-14 3-8.4.8 Manual Remote Operator (SSBN-726 Class Only). . . . . . . . . 3-15 3-8.4.9 Pressure Release Control Box. . . . . . . . . . . . . . . . . . . . 3-17

3-8.5 Distribution Piping System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 3-8.5.1 Nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 3-8.5.2 Appliance Nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 3-8.5.3 Duct Nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 iv

3-8.5.4 Plenum Range Hood Nozzle. . . . . . . . . . . . . . . . . . . . . 3-17 3-8.5.5 Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 3-8.5.6 Vent Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 3-8.5.7 Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3-9 SSN-688 CLASS APC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3-10 SSN-21 CLASS APC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3-11 SSBN-726 CLASS APC SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

4 SCHEDULED MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-1 SURFACE SHIP APC SYSTEM SCHEDULED MAINTENANCE. . . . . . . . . . . 4-1

4-2 SUBMARINE APC SYSTEM SCHEDULED MAINTENANCE. . . . . . . . . . . . 4-1

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-2 TROUBLESHOOTING TABLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-3 FAULT ISOLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

6 CORRECTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6-1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-1.1 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6-2 ADJUSTMENT AND ALIGNMENT PROCEDURES. . . . . . . . . . . . . . . . . . 6-1

6-2.1 System Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2.2 Cylinder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2.3 Cable Release System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2.4 Distribution Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2.5 Electrical Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

7 ILLUSTRATED PARTS BREAKDOWN . . . . . . . . . . . . . . . . . . . . . . . 7-1

SECTION I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-1 SCOPE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-2 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-3 MANUFACTURERS’ CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-4 ABBREVIATIONS AND ACRONYMS. . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 v

7-5 CROSS-REFERENCING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

SECTION II GROUP ASSEMBLY PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7-6 ILLUSTRATIONS AND GROUP ASSEMBLY PARTS LISTS. . . . . . . . . . . . . 7-4

7-6.1 Presentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4 7-6.2 Equipment Breakdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7-6.2.1 Major Assemblies/Components. . . . . . . . . . . . . . . . . . . 7-4 7-6.2.2 Subassemblies/Components. . . . . . . . . . . . . . . . . . . . . 7-4 7-6.2.3 Bubble Presentation. . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7-7 GROUP ASSEMBLY PARTS LIST INDEX AND DESCRIPTION. . . . . . . . . . . 7-4

7-7.1 Group Assembly Parts List and Illustrated Parts Breakdown. . . . . . . . . . 7-4 7-7.2 Figure and Index Number Column. . . . . . . . . . . . . . . . . . . . . . . . 7-4 7-7.3 Reference Designation Column. . . . . . . . . . . . . . . . . . . . . . . . . . 7-4 7-7.4 Part Number Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 7-7.5 Commercial and No Number Entries. . . . . . . . . . . . . . . . . . . . . . . 7-5 7-7.6 Drawing Number Entries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 7-7.7 Indent Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 7-7.8 Description Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 7-7.9 Commercial and Government Entity Column. . . . . . . . . . . . . . . . . . 7-6

7-7.10 Quantity per Assembly Column. . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 7-7.11 Used on Code Column. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

8 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

SECTION I SURFACE SHIP APC SYSTEM INSTALLATION . . . . . . . . . . . . . . . . . 8-1

8-1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8-2 SYSTEM INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 8-2.1 Standard Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 8-2.2 The APC System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8-3 ACTIVE SYSTEM TESTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 8-3.1 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

SECTION II SUBMARINE APC SYSTEM INSTALLATION . . . . . . . . . . . . . . . . . . . 8-2

8-4 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8-5 SYSTEM INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 8-5.1 Standard Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 8-5.2 The APC System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8-6 ACTIVE SYSTEM TESTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 vi

LIST OF TABLES

Table Title Page

1-1 Reference Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-2 System Description Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-3 Reference Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40

1-4 System Description Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40

2-1 APC System Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-2 APC System Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

3-1 Summary of Two Basic Types of APC System . . . . . . . . . . . . . . . . . . . . . 3-4

3-2 System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

5-1 Automatic System Operation Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 5-2

5-2 Manual System Operation From Pressure Release Control Box Troubleshooting . . . 5-3

5-3 Manual System Operation From Lever Control Head Troubleshooting . . . . . . . . 5-3

5-4 Manual System Operation From Remote Manual Control Box Troubleshooting . . . 5-4

5-5 Low APC Cylinder Pressure Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 5-5

5-6 Low Nitrogen Cartridge Pressure Troubleshooting . . . . . . . . . . . . . . . . . . . 5-5

5-7 Ineffective Fire Extinguishing Troubleshooting . . . . . . . . . . . . . . . . . . . . . 5-5

7-A1 Manufacturers’ Codes, Names, and Addresses . . . . . . . . . . . . . . . . . . . . . . 7-1

7-A2 Abbreviations and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7-A3 Index of IPB Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7-1 APC System, Type A General Arrangement, Parts List . . . . . . . . . . . . . . . . . 7-8

7-2 APC System, Type B, General Arrangement, Parts List . . . . . . . . . . . . . . . . 7-10

7-3 APC System, SSBN-726 Class, General Arrangement, Parts List . . . . . . . . . . . 7-12

7-4 Cylinder Assembly, Type A Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

7-5 Cylinder Assembly, Type B Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

7-6 Vent Plug Tee, Strainer Assembly and Nozzles, Parts List . . . . . . . . . . . . . . . 7-25

7-7 Cable Release System, Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

7-8 Cable Release System (SSBN-726 Class), Parts List . . . . . . . . . . . . . . . . . . 7-32 vii

LIST OF TABLES - Continued

Table Title Page

7-9 Pressure Release Control Box Assembly, Parts List . . . . . . . . . . . . . . . . . . . 7-34

7-10 Recharge Apparatus, Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

7-11 Flushing Adapters, Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 viii

LIST OF ILLUSTRATIONS

Figure Title Page

1-1 Cylinder Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-2 APC System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-3 General Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-4 Range Guard Cylinder Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-5 Cable Release System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1-6 Remote Manual Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-7 Combination Remote Manual Release (Release-to-Trip) Control Box . . . . . . . . . 1-12

1-8 Combination Remote Manual Release (Release-to-Trip) Control Box (Side View) . . 1-13

1-9 Appliance Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-10 Duct Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-11 Pressure Release Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1-12 Corner Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

1-13 Distribution Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1-14 Vent Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-15 Discharge Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-16 Strainer Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

1-17 Cylinder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

1-18 APC System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1-19 APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

1-20 Range Guard Cylinder Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

1-21 Cable Release System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1-22 Remote Manual Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1-23 SSBN-726 Cable Release System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1-24 Manual Remote Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1-25 Appliance Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

1-26 Duct Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 ix

LIST OF ILLUSTRATIONS - Continued

1-27 Pressure Release Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32

1-28 SSN-21 Pressure Release Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

1-29 Corner Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

1-30 Distribution Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

1-31 SSBN-726 Class Distribution Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

1-32 SSN-21 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 1-37

1-33 SSN-688 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 1-38

1-34 Vent Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39

1-35 Discharge Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39

1-36 Strainer Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40

2-1 General Arrangement of Automatic and Manual Controls . . . . . . . . . . . . . . . 2-3

2-2 SSBN-726 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-3 SSN-21 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2-4 SSN-688 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 2-9

3-1 APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-2 Appliance and Duct Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3-3 SSBN-726 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . 3-10

3-4 SSN-21 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3-5 SSN-688 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 3-12

3-6 Appliance Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

3-7 Pressure Release Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

3-8 Duct Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

3-9 SSN-688 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 3-19

3-10 SSN-21 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 3-20

3-11 SSBN-726 Class APC System Arrangement . . . . . . . . . . . . . . . . . . . . . . . 3-21

7-1 APC System, Type A General Arrangement . . . . . . . . . . . . . . . . . . . . . . . 7-7 x

LIST OF ILLUSTRATIONS - Continued

7-2 APC System, Type B General Arrangement . . . . . . . . . . . . . . . . . . . . . . . 7-9

7-3 APC System, SSBN-726 Class, General Arrangement . . . . . . . . . . . . . . . . . 7-11

7-4 Cylinder Assembly, Type A (Sheet 1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . 7-14

7-5 Cylinder Assembly, Type B (Sheet 1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . 7-19

7-6 Vent Plug Tee, Strainer Assembly and Nozzles . . . . . . . . . . . . . . . . . . . . . 7-24

7-7 Cable Release System (Sheet 1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

7-8 Cable Release System (SSBN-726 Class) . . . . . . . . . . . . . . . . . . . . . . . . 7-32

7-9 Pressure Release Control Box Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

7-10 Recharge Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

7-11 Flushing Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

7-12 5 Quart Cylinder Assembly (Alteration DB-2811R1C1) . . . . . . . . . . . . . . . . 7-37

8-1 Electrical Diagram (Cylinder Pressure Switch) . . . . . . . . . . . . . . . . . . . . . 8-3

8-2 Electrical Diagram (Distribution Piping Appliance Pressure Switch) . . . . . . . . . 8-4

8-3 Electrical Diagram (Interlock between APC System and Hood Ventilator Controllers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5 xi

SAFETY SUMMARY

GENERAL SAFETY NOTICES

The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this manual. They are recommended precautions that must be understood and applied during operation and maintenance of the equipment covered herein. Should situations arise that are not covered in the general or spe-cific safety precautions, the commanding officer or other authority will issue orders as deemed necessary to cover the situation. No work shall be undertaken on energized equipment or circuits until approval of the commanding officer is obtained, and then only in accordance with Naval Ships’ Technical Manual (NSTM) S9086-KC-STM- 010/Chapter 300.

DO NOT REPAIR OR ADJUST ALONE

Under no circumstances shall repair or adjustment of energized equipment be attempted alone. The imme-diate presence of someone capable of rendering first aid is required. Before making adjustments, be sure to pro-tect against grounding. If possible, adjustments should be made with one hand, with the other hand free and clear of equipment. Even when power has been removed from equipment circuits, dangerous potentials may still exist due to retention of charges by capacitors. Circuits must be grounded and all capacitors discharged prior to attempting repairs. Equipment should be deenergized and properly tagged out according to the ship’s Standard Operating Procedures.

TEST EQUIPMENT

Make certain test equipment is in good condition. If a metal-cased test meter must be held, ground the case of the meter before starting measurement. Do not touch live equipment or personnel working on live equipment while holding a test meter. Do not ground any measuring devices; these devices should not be held when taking measurements.

INTERLOCKS

Interlocks are provided for safety of personnel and equipment and should be used only for the purpose intended. They should not be battle shorted or otherwise modified except by authorized maintenance personnel.

Do not depend solely upon interlocks for protection. Whenever possible, disconnect power at the power distri-bution source.

MOVING EQUIPMENT

Personnel shall remain clear of moving equipment. If equipment requires adjustment while in motion, a safety watch shall be posted. The safety watch shall be qualified to administer CPR, have a full view of the operations being performed, and have immediate access to controls capable of stopping equipment motion.

FIRST AID

An injury, no matter how slight, shall never go unattended. Always obtain first aid or medical attention immediately, and file an injury report in accordance with OPNAVINST 5102.1 series, subj: Mishap Investigation and Reporting.

xii

SAFETY SUMMARY - Continued

RESUSCITATION

Personnel working with or near high voltage shall be familiar with approved methods of resuscitation.

Should someone be injured and stop breathing, begin resuscitation immediately. A delay could cost the victim’s life. Resuscitation procedures shall be posted in all electrically hazardous areas. Viton seals are used in this equipment. Viton is a fluorelastmer, i.e. a synthetic rubber-like material containing fluorine. When used under its designed conditions it is perfectly satisfactory and safe. However, if exposed to a temperature in the region of 750 °F (400 °C) or higher, the material does not burn but decomposes and forms a hydrofluoric acid. This acid is extremely corrosive and is almost impossible to remove once it contaminates the skin.

If required to inspect equipment which has been exposed to a very high temperature, look closely for signs of decomposition of the seals or gaskets, which will appear charred or as a black sticky substance. If decompo-sition has occurred, do not under any circumstances touch either the seal material or in the vicinity of the seal area. If chemical contamination of the skin occurs by decomposition of Viton, it may be necessary to surgically remove the affected area from the skin.

Use acid resistant gloves, eye protection and decontaminate the equipment by neutralizing the acid with a caustic soda solution and flush with water. Dispose of the contaminated waste in accordance with hazardous waste disposal instructions.

GENERAL PRECAUTIONS

The following general precautions are to be observed at all times.

1. Install and ground all electrical components associated with this system/equipment in accordance with applicable Navy regulations and approved shipboard practices.

2. Ensure that all maintenance operations comply with Navy Occupational Safety and Health (NAVOSH) Program Manual for Forces Afloat, OPNAVINST 5100.19 series.

3. Observe precautions set forth in NSTM S9086-KC-STM-010/Chapter 300 with respect to electrical equipment and circuits.

4. Ensure that protective guards and shutdown devices are properly installed and maintained around rotating parts of machinery and high voltage sources.

5. Do not wear loose clothing while working around rotating parts of machinery.

6. Ensure that special precautionary measures are employed to prevent applying power to the system/ equipment any time maintenance work is in progress.

7. Do not make any unauthorized alterations to equipment or components.

8. Before working on electrical system/equipment, use the correct tag out procedure and check with voltmeter to ensure that system is not energized.

9. Consider all circuits not known to be ″dead,″ ″live″ and dangerous at all times.

10. When working near electricity, do not use metal rules, flashlights, metallic pencils, or any other objects having exposed conducting material.

11. Deenergize all equipment before connecting or disconnecting meters or test leads.

xiii

12. When connecting a meter to terminals for measurement, use range higher than expected voltage.

13. Before operating equipment or performing any tests or measurements, ensure area is dry of water or other liquid conductive material and that frames of all motors and starter panels are securely grounded.

14. Ensure that area is well-ventilated when using cleaning compound or solvent. Avoid prolonged breathing of fumes and compound or solvent contact with skin or eyes.

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WARNINGS AND CAUTIONS

Specific warnings and cautions applying to the system/equipment covered by this manual are summarized below. These warnings and cautions appear elsewhere in the manual following paragraph headings and immedi-ately preceding the text to which they apply. They are repeated here for emphasis.

Ensure foil sealing discs are replaced with factory supplied replacements. Use of kitchen foil or other substitutes may prevent disc rupture and thus prevent the discharge of APC solution through the nozzles. (Page 2-1, page 2-5)

Do not remove the pressure switch from the charged cylinder. Injury to person-nel may result if removal is done while the cylinder is pressurized. (Page 8-1, page 8-2)

An applied force in the cable of more than 20 pounds may cause the fusible links to separate, resulting in premature discharge of the APC system. (Page 1-8, page 1-29)

Foil seals should be replaced only with factory-supplied replacements. Use of kitchen foil or other substitutes may prevent disc rupture, and thus prevent the discharge of APC solution through the nozzles. (Page 1-10, page 1-30)

The exhaust fan must be energized before turning on the fryers and remain on for a cooldown period after the fryers are shut off. If this procedure is not fol-lowed, a premature discharge of the APC system may occur due to fryers oil heat melting of fusible links above 360 °F. (Page 2-1, page 2-5) xv / (xvi Blank) xvi @@FIpgtype@@BLANK@@!FIpgtype@@

CHAPTER 1

GENERAL INFORMATION

SECTION I

INTRODUCTION

1-1. INTRODUCTION.

This manual contains information necessary to operate, maintain, repair, and install the Deep Fat Fryer Fire Extinguishing System, herein referred to as the Aqueous Potassium Carbonate (APC) System. This manual is applicable to surface ship and submarine APC systems installed in accordance with MIL-E-24416, revision B, and NAVSEA Standard Installation Drawing, 803-6397385, revision A. APC systems installed in accordance with later revisions to the listed specification and Standard Drawing will have significantly different configurations and operating requirements, which are not covered in this manual. Chapters 1, 2, 3, 4, and 8 of the manual have been subdivided to provide surface ship specific APC system information followed by submarine specific APC system information. When using this manual, refer to the applicable section of each chapter for the surface ship or sub-marine information.

1-1

SECTION II

SURFACE SHIP APC SYSTEM GENERAL INFORMATION

This chapter has been subdivided to provide surface ship specific APC system information followed by submarine specific APC system information. When using this manual, refer to the applicable section of this chapter for the surface ship or submarine information.

1-2. APC SYSTEM.

The sole source vendor for MIL-E-24416 APC systems is phasing out production of APC cylinders and replacement components. NAVSEA will identify comparable components to replace obsolete parts and create a ship change document (SCD).

The APC system is a fixed fire extinguishing system specifically designed to protect the deep fat fryers. In some installations, protection is also provided for the associated exhaust system. The APC system is a self con-tained system. Its only interface with other systems is through the pressure switch(es) that interrupt electrical power to the protected fryers and in some installations, initiate alarms and secure ventilation and dampers. The APC system is divided into three subsystems; the cylinder assembly (Figure 1-1), cable release system, and dis-tribution piping. See block diagram (Figure 1-2).

Two types of APC are used to protect various ship configurations: Type A and Type B. Each APC system consists of components manufactured in accordance with MIL-E-24416 (Extinguishing System, Fire, Fixed, Aqueous Potassium Carbonate). The distinguishing characteristic of each type of APC system is the quantity of APC solution needed for protection of the different-size ship configurations. Each APC system installation is custom-fit to a configuration.

1-2.1 The APC system extinguishing agent is a solution of potassium carbonate and water. When the solution is applied to hot grease, it turns to a soapy, combustion resistant froth that separates the grease from its source of oxygen. There is little or no cooling with APC.

1-2

Figure 1-1 Cylinder Assemblies

1-3

1-2.2 The APC system responds either manually or automatically. The fusible links supplied with this system take one to three minutes to melt under optimum conditions, therefore, automatic operation of the APC system by melting of the fusible links is a backup to manual actuation. The automatic discharge of APC solution from the cylinder is initiated by the separation of the fusible links at the detectors. The separation of the links releases the tension in the cable release system. This in turn activates the APC cylinder valve, discharging the APC solu-tion. The APC solution is propelled by nitrogen gas also stored in the APC cylinder. Distribution piping delivers the APC solution to extinguish the fire. This is done through piping and nozzles located over the deep fat fryers.

In some installations, nozzles are also located in the plenums and exhaust ductwork.

1-3. PHYSICAL ARRANGEMENT.

The APC system is installed to protect deep fat fryers located in all galleys, bakeries, and pantries. Figure 1-3 shows the general arrangement of an APC system installation protecting deep fat fryers. Since system instal-lation requirements have changed over time, actual configurations may vary. For example, some installations are not equipped with pressure switches in the distribution piping, some installations have plenum and duct nozzles, Figure 1-2 APC System Block Diagram

1-4 and some installations have the APC cylinder pressure switch mounted to the bulkhead and connected to the cyl-inder with tubing instead of being directly mounted on the cylinder dome.

1-4. EQUIPMENT DESCRIPTION.

1-4.1 APC System. Each APC system consists of a cylinder assembly, a cable release system, and distribution piping. The components that make up each of these subsystems are described in the following paragraphs.

The APC cylinder assemblies are obsolete without replacement. Hydrostatic test-ing is authorized in lieu of replacement of expired cylinders. Retain cylinder valve and lever control head for re-installation of cylinder.

1-4.2 Cylinder Assembly. Typical cylinder assemblies are shown as Figure 1-1. The assembly provides for control and storage of APC solution and propellant. The cylinder assembly consists of the storage cylinder, cyl-inder valve, lever control head, pressure gage, and pressure switch. There are different sizes of cylinder assem-blies used in APC systems: There is a 1-gallon assembly that is being phased replaced with a 2-gallon assembly, and a 6-gallon assembly. The storage cylinder is charged with APC solution and pressurized with nitrogen. The nitrogen pressure is the propellant for discharging the APC solution. The lever control head interfaces with the cable release system and is a manual/automatic actuator. The cylinder valve, with the lever control head attached, controls the automatic or manual actuation of the storage cylinder. The pressure gage installed on the cylinder valve provides a local indication of cylinder pressure. Depending on the installation, cylinder pressure switches may do any or all of the following: secure power to the protected appliance, secure ventilation and or dampers;

actuate alarms.

1-4.2.1 APC Storage Cylinder. Standard-size storage cylinders are used in the two different types of APC sys-tems. The storage cylinder(s) must be installed in an upright position and mounted in a vertical position with mounting brackets. The storage cylinders contain a premixed solution of potassium carbonate and water. The Type A system uses a 1-gallon storage cylinder containing 2-1/2 quarts of APC solution. When DB-2811R1C1 is installed the Type A system will use 2-gallon APC cylinders charged with 5 quarts of APC solution in place of the 2-1/2 quart APC solution cylinders. Type A 1-gallon storage cylinders are no longer manufactured commer-cially. Current PMS requires cylinder replacement only when failing visual inspection criteria or expiration of hydrostatic test date. Hydrostatic testing is authorized in lieu of replacing expired cylinders. The Type B system uses a 6-gallon storage cylinder containing 4 gallons of APC solution.

1-5

Figure 1-3 General Arrangement

1-6

1-4.2.2 Lever Control Head. The lever control head is the cylinder valve actuator. It mounts directly to the cyl-inder valve and controls the automatic or manual discharge of the cylinder assembly. Copper tubing connects the nitrogen cartridge of the cable release system to the lever control head. In the automatic mode of operation, the lever control head is operated pneumatically by nitrogen pressure from the cable release system. Manual opera-tion is performed by pulling the release pin and lever.

1-4.2.3 Cylinder Valve. The cylinder valve (Figure 1-4) is the interface between the storage cylinder and the distribution piping. The cylinder valve is actuated by the lever control head. When open, the cylinder valve allows the discharge of APC solution. A pressure gage mounted to the cylinder valve monitors cylinder pressure.

1-4.2.4 Pressure Switch. The purpose and installation of pressure switches in the APC system varies depend-ing on system configuration. Cylinder pressure switches are connected to the cylinder valve for ″A″ size cylin-ders and connected to the dome of the cylinder for ″B″ size cylinders. In some installations the pressure switch is mounted on a bulkhead or stanchion with tubing run from the cylinder to the pressure switch(es). The cylin-der pressure switch(es) may perform any or all of the following functions: secure power to the protected appli-ance, secure ventilation and dampers, actuate alarms. In newer installations the cylinder pressure switch only actuates a low pressure alarm, while a distribution piping switch secures power to the protected appliance, secures ventilation and dampers and actuates fire alarms.

1-4.3 Cable Release System. This system (Figure 1-5) consists of the remote manual control box, detector assemblies, pressure release control box, cable sections, corner pulleys, and mounting hardware. The anchor for the cable release sections is the remote manual control box. From the remote manual control box, the cable sec-tions are joined at detector assemblies by fusible links to form a continuous cable. Changes in direction of the cable release sections must be done by 90-degree corner pulleys.