1-1. SCOPE. This manual provides general instruc-
tions for purging and charging fire control instruments with
dry nitrogen. If specific instructions are provided in a tech-
nical publication pertaining to a specific fire control item,
this publication does not attempt to take precedence over
1-2. MAINTENANCE FORMS, RE-
CORDS, AND REPORTS. Department of the
Army forms and procedures used for equipment mainte-
nance will be those prescribed by DA PAM 738-750, The
Army Maintenance Management System.
1-3. DESTRUCTION OF ARMY MATERl-
ALS TO PREVENT ENEMY USE. Refer to
TM 750-244-3 and TM 750-244-1-4 for procedures con-
cerning the destruction of this material.
1-4. REPORTING EQUIPMENT
(EIR). If the equipment used in these procedures needs
improvement, let us know. Send us an EIR. You, the user,
are the only one who can tell us what you do not like about
your equipment. Let us know what you do not like about
the design or performance. Put it on an SF 368 (Quality
Deficiency Report). Mail it to us at Commander, U.S.
Army Armament, Munitions and Chemical Command,
ATTN: AMSMC-QAD, Rock Island, IL 61299-6000.
We will send you a reply.
EQUIPMENT DESCRIPTION AND DATA
1-5. EQUIPMENT CHARACTERISTICS,
CAPABILITIES, AND FEATURES.
a. Port Identification. Purging and charging ports of
new production and overhauled fire control instruments are
color coded. The color code system provides for painting
of a gray band around the inlet port and a yellow band
around the outlet port.
b. Port Location. Illustrations for fire control instru-
ments that are purged and charged in this manual are in-
cluded to show the location of inlet and outlet ports as well
as associated hardware.
1-6. SAFETY, CARE, AND HANDLING.
The following safety precautions are listed for the protec-
tion of personnel performing the procedures contained in
a. First Aid. Serious injury may occur at any time
during the performance of these procedures. Prior to per-
forming the work requirements, personnel should familiar-
ize themselves with first aid information contained in
b. Compressed Gas.
Compressed nitrogen gas is
used for purging and charging. Death or severe injury may
result if personnel fail to observe safety precautions.