TM  5-4220-231-14&P OPERATION PROCEDURES (OP)    FOR    DIVING   OPERATIONS OPERATOR CHECKLIST OP    1 DATE / / START    TIME END   TIME OPERATOR 1 OPERATOR 2 LOCATION STEP ITEM LOCATION ACTION PER- CHECKED _IFORMED   BY BY SYSTEM     SET-UP OP   1.1   (Config.    1) 1.1.1 SDASS Perform    Before    Operation PMCS IAW   Table     2-1 NOTE Tag    lines     must be    used when stacking DASS Racks. NOT Primary and     Secondary DASS Racks must be   charged from    separate sources. NOTE Deck     and     Interconnecting Hose length must    be   considered during setup. NOTE SDASS Configuration 1  is  shown in   Figure     2-6.. 1.1.2 Primary Position Primary DASS     Rack DASS Rack 1.1.3 Secondary Lift  and    then     lower     secondary DASS Rack DASS     Rack on   top   of   Primary DASS     Rack as   shown in   Figure 2-7. Secondary DASS     Rack should face     the    same direction as the    Primary DASS Rack. NOTE Secure DASS Racks IAW  established Standard Operating Procedures. 1.1.4 VTA Approx. 25   ft  from Position VTA. DASS Racks 1.1.5 DACC Prepare the    DACC     to   be mounted on   the    VTA  by removing cover, opening rear panel, and    inserting support arms as    shown in   Figures 2-8 and     2-9. 1.1.6 DACC VTA Using    two-man lift,  grasp handles and    lift  DACC    into place on   VTA  as    shown in Figure 2-10. Secure DACC     to VTA   by   inserting retaining pins through DACC     support arms. 1.1.7 VTA Remove rear    retaining pins from    the    top   of  the    VTA  control panel and    rotate panel to   its upright position. Secure the panel in  the    upright position by inserting retaining pins    through rear     panel supports. 2-42 Change 6