2-8. Equipment Checks Prior to Water Entry - continued.
Table 2-4. Equipment Checks Prior to Water Entry
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
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
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:
b. Knife, strap on.
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
6. Check entire rig.
TENDER - Check entire rig, including:
a. Hose connections.
c. Strain relief shackle.
d. Air flow to diver.