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Donning Procedures - CONT - TM-5-4220-226-14P_26
Table 2-4.  Equipment Checks Prior to Water Entry - TM-5-4220-226-14P_28

TM-5-4220-226-14P MK12 Surface Supported Diving System (SSDS) (NSN 4220-01-097-5674) Manual
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TM 5-4220-226-14&P 2-8.  Equipment Checks Prior to Water Entry - continued. Table 2-4.  Equipment Checks Prior to Water Entry Step Procedure 1.  Breathing system check. a.  Open and close the steady flow valve to ensure proper operation. b.  Turn dial-a-breath out until it begins to freeflow, then back in until it stops.  Turn in one additional turn.  Check purge button for full purge. c.  Check breathing resistance by breathing in and out.  Adjust dial-a- breath so that only slight effort is required to inhale. d.  Press purge button to check air purge. 2.  Communications check. Perform communications check, sending and receiving at both ends. 3.  Leak check. TENDER - Apply leak detector to check for leaks to all mask connections Including: a.  Umbilical to main air inlet on side block. b.  Emergency air supply hose to emergency air inlet on side block. c.  First stage regulator on emergency air cylinder. d.  Bent tube assembly to side block. e.  Bent tube assembly to demand regulator. f.  Demand regulator to helmet. 4.  Accessory check. TENDER AND DIVER - Ensure that diver has all necessary accessories and that they are properly donned, including: a.  Boots/fins. b.  Knife, strap on. c.  Weights. d.  Diver tools. e.  Diver lights. f.  Other, as required. 5.  Standby diver ready. TENDER - Ensure standby diver is ready to enter water and alert diving supervisor. 6.  Check entire rig. TENDER - Check entire rig, including: a.  Hose connections. b.  Harness. c.  Strain relief shackle. d.  Air flow to diver. 2-12









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