CHAPTER 1 INTRODUCTION - TM-3-4240-302-30-P-60006

TM 3-4240-302-30&P-6

CHAPTER 1

INTRODUCTION

Section I GENERAL INFORMATION

1-1. SCOPE.

1-4. NOMENCLATURE CROSS-REFERENCE LIST.

Nomenclature cross-references used in this manual

a. Type of Manual. This manual provides direct

include the following:

support maintenance for the airflow valve, including

repair parts and special tools list.

Common Name

Official Nomenclature

b. Equipment Name and Number.

Airflow Valve

Motor with RFI filter

Gearcase-motor

(NSN 4240-01-055-1493)

Diode

Semiconductor device,

c. Purpose of Equipment .

The airflow valve

diode

controls pressurization of protective van or shelter and

protective entrance (PE).

RFI filter

Radio frequency

interference filter

1-2.

MAINTENANCE FORMS, RECORDS, AND

Department of the Army forms and

REPORTS.

1-5.

REPORTING EQUIPMENT IMPROVEMENT

procedures used for equipment maintenance will be

RECOMMENDATIONS (EIR). If the collective protection

those prescribed by DA Pam 738-750, The Army

equipment needs improvement, let us know. Send an

Maintenance Management System (TAMMS) as

EIR. You, the user, are the only one who can tell us

contained in Maintenance Management Update.

what you do not like about your equipment. Let us know

why you do not like the design. Put it on an SF 368

(Quality Deficiency Report). Mail it to the Commander,

1-3.

DESTRUCTION OF ARMY MATERIEL TO

PREVENT ENEMY USE. Refer to TM 43-0002-31,

U.S.

Army Armament, Munitions and Chemical

Destruction of Chemical Weapons and Defense

Command, ATTN: AMSMC-QAD(R), Rock Island, IL

Equipment to Prevent Enemy Use.

61299-6000. We will send you a reply.

Section II EQUIPMENT DESCRIPTION AND DATA

the main fan through the air inlet of the

1-6 DESCRIPTION AND DATA

filter unit. From the main fan, the air is

a. Organizational Maintenance Manual. Refer to

pushed through the particulate and gas

appendix

for

the

applicable

organizational

filters to the airflow valve. The filtered air

maintenance manual.

passes through the airflow valve and is

carried by airduct hoses to the protective

b. Characteristics. Responding to compartment

entrance (PE) through the airflow valve

control module outputs, the airflow valve blocks flow of

and silencer and to the shelter through the

filtered air from the Gas-Particulate Filter Unit (GPFU).

air conditioner.

Pressure sensing

components in the compartment control

c. Typical MCPE System Description.

module (CCM) automatically adjust the

airflow valve to maintain a positive

(1) The gas-particulate filter unit (GPFU)

pressure in the shelter.

removes toxic gases and dust from the air

supplied to the protective entrance and

shelter. Outside and return air is drawn by

1-1