ANNUAL AND SEMI-ANNUAL CHECK AND SERVICES.
Table 4-1 contains the instructions for conducting annual preventive maintenance. Table 4-2 contains Instructions
for completing semi-annual preventive maintenance.
O-Rings - Inspect for dry rot. damage, and distortion; replace if necessary.
Gaskets - Inspect for damage and loss of compressron capabilities; replace if necessary.
Rubber Parts - Inspect for dry rot, tears, distortion; replace if necessary
Plastic Parts - Inspect plastic parts for depressions. cracks, other damage; replace if necessary.
Filter - Inspect for distortion, pin holes, rust and other damage; replace if necessary.
Metal Part - Inspect for dents. rust cracks, and other damage; replace if necessary.
Table 4-1. ANNUAL UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
TOTAL MANHOURS REQUIRED 3.2
Functions to be Performed
Disassemble all components of the open circuit SCUBA system in accordance with
disassembly instructions in Section V and Section VI.
Clean all parts as needed in accordance with cleaning instructions in Section III. para-
Inspect and replace parts as necessary in accordance with inspection instructions in
REASSEMBLY AND ADJUSTMENT
Reassemble and adjust the system in accordance with Section V and Section VI.
Perform step 4 of Table 3-1 "Weekly Preventive Maintenance Checks and Services".
INTERNAL TANK INSPECTION (VISUAL)
Perform inspection in accordance with instructions contained in Section VI, 4-18.