TM 5-4220-226-14&PTable 2-4. Equipment Checks Prior to Water EntryStepProcedure6. Check entire rig - continued.e. Ensure emergency air supply cylinder valve is fully opened, thenback off one-quarter turn.NOTEAll equipment should be functioning correctly andthe diver breathing comfortably for at least twominutes from ON AIR time before entering water.TENDER - Notify diving supervisor that diver is "READY TO ENTERWATER."7. Diver enter water.TENDER - Assist diver into water.2-9. In-Water Checkout Procedures.The procedures in table 2-5 are to be performed In the water before the diver begins his descent to the workingdepth.Table 2-5. In-Water Checkout ProceduresStepProcedure1. Breathing check.Perform the following system checks as necessary.a. Ensure adequate air flow.b. Open and close steady flow valve to ensure proper operation.c. Open and close dial-a-breath valve to ensure proper operation.d. Check breathing resistance by breathing in and out. Adjust dial-a-breath valve so that only slight effort is required to inhale.e. Press purge button to check air purge.2. Communications check.Diving Supervisor - Perform communications check:a. Diver to diver, send and receive.b. Divers to standby diver, send and receive.c. Divers to surface support personnel, send and receive.d. Divers to communications operator (if applicable), send andreceive.e. Communications operator to surface support personnel (ifapplicable), send and receive.2-13
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