Chapter 1 INTRODUCTION
S e c t i o n I. GENERAL
These instructions are for your use in operating and maintaining the open circuit Military SCUBA System (fig, 1-1),
The instructions provide information on the theory of operation, pre-dive and post-dive checks and services, as
well as periodic preventive maintenance services Also Included is unit maintenance of the equipment and descrip-
tions of the components and their functions in relationship to other components.
MAINTENANCE RECORDS-AND DIVING RECORDS.
Maintenance Records will include periodic repairs of the regulator and tank block manifold assembly.
semi annual or annual inspection of SCUBA tanks and periodic check of pressure gages against a master
reference gage. DD Form 314 "Preventive Maintenance Schedule and Record" may be used at the
discretion of the organizations commanding officer responsible for the conduct of diving operations TM
38-750 "The Army Maintenance Management System" describes the use of this form.
Diving Records will be maintained in accordance with procedures outlined in AR 611-75, "Section, Quali-
fications, Rating and Disrating of Marine Divers." Each unit or activity authorized to conduct diving opera-
tions will maintain the "Diving Log" DA Form 1262-R. Each diver will maintain his "Diving Duty Summary
Sheet" DA Form 3475-R.
EQUIPMENT SERVICE ABILITY CRITERIA (ESC).
This equipment is not covered by an ESC.
INSTRUCTION OF ARMY MATERIAL TO PREVENT ENEMY USE.
Procedures to be followed when capture or abandonment of the open circuit SCUBA System to an enemy is immi-
nent are covered in TM 750-244-3. "Procedures for Destruction of Equipment to Prevent Enemy Use."
Procedures to be followed will be found in TM 740 90 1 "Administrative Storage."
DESCRIPTION AND PURPOSE.
Description. The open circuit Military SCUBA System is comprised of four major components as follows.
Regulator, Air Pressure Demand: single hose, balanced first stage: conshelf XII or XIV (Arctic Explor-
er;) 3000 PSI operating pressure.
Pressure Gauge. Divers regulator attachable: underwater adapted: 3000 PSI operating pressure.
Tank Block, Divers: twin molychrome steel: galvanized exterior: reserve valve; and twin tank harness,
2475 PSI operating pressure. 71 2 AV cubic feet per tank.
Gauge, Tank Pressure. Checks air supply before and after diving. 3000 PSI service with bleeder.
Purpose. This Divlng Equipment IS intended to be used in underwater Inspections. searching, clearing
All of the components of this open circuit SCUBA systems are manufactured by the U.S. Divers Company.