TM  5-4220-231-14&P OPERATION PROCEDURES (OP)    FOR   DIVING   OPERATIONS OPERATOR CHECKLIST OP   10  (Charge Secondary Air)  (Cont) DATE START    TIME END   TIME OPERATOR 1 OPERATOR 2 LOCATION STEP ITEM LOCATION ACTION PERFORMED CHECKED BY BY SECURE CHARGING OPERATIONS OP   10.5 WARNING OP   10.5   should not  be   done    during   diving   or  chamber operations. When   diving operations are   conducted using   Configuration 2  the   compressor charging hose should not  be   connected to  the   DASS    Rack   that   has   the   50  ft.  hose    supplying secondary air  on   it.   Failure    to  follow  this   instruction could    produce a  hazardous condition by  securing secondary air  to  the   DACC. 10.5.1 AHP-V206 Secondary DASS Close    CW. Rack   (with AHP-V207 charging hose) - Flask    Valves 10.5.2 AHP-V208 Secondary DASS Slowly   open    CCW   - Rack   (with Turn   back   1/4   CW. charging hose) 10.5.3 AHP-V21   0 Secondary DASS Slowly   open    CCW   bleeding all Rack   (with pressure from   system. charging hose) Close CW. 10.5.4 AHP-V208 Secondary DASS Close CW. Rack   (with charging hose) 10.5.5 AHP-V208 Secondary DASS Remove Charging Hose. Rack   (with Replace protective caps    as charging hose) each hose is  disconnected. 10.5.6 20  CFM  HP Approx. 100   ft. Perform    After  Operation PMCS Compressor from   Secondary IAW TM 5-4310-389-14. DASS   Rack. Conducted By: Rank: Date/Time Verified    By: Rank: Date/Time Supervisor: Rank: Date/Time Change 6 2-79