Kirby Air Control System Decompression, 2.13COMPLETION OF DIVING OPERATIONS, KMACS 5 MANUAL

inform top side that he is, “Leaving the bottom.” The KMACS 5 operator should carefully note the time in the dive log. The KMACS 5 operator must monitor the diver’s rate of ascent carefully, observing his watch and the pneumo gauge (C,P) . There is no need to pneumo the diver as he ascends because the air in the pneumo hose will automatically expand and vent the hose as the diver approaches the surface.

2.12 DECOMPRESSION

If the diver has decompression stop(s) required as a result of his dive, slow the diver’s ascent as he ap- proaches his first stop. Upon reaching his first stop, the diver should assume a relaxed and comfortable position in the water. A weighted line or some other apparatus should be provided to the diver to assist him in maintaining a proper depth. Decompression in mid-water, without a line or other method of fixing the diver’s depth, is NOT acceptable as it is impos- sible to maintain an exact depth without something to hang onto.

An accurate pneumo should be taken at the diver’s decompression stop. There should be no unnecessary slack in the diver’s hose, i.e., no part of the umbili- cal should be lower than the diver, as this will give a false reading (deeper) of the diver’s depth. Make sure the end of the pneumo hose is held at the diver’s chest with the open end pointing down.

KMACS 5 MANUAL

2.13COMPLETION OF DIVING OPERATIONS

Immediately following the completion of diving operations the dive station should be disassembled and the KMACS 5 protected from the weather.

Both high pressure and low pressure air supplies should be turned off at their source. Bleed the air from the diver’s umbilical(s) by opening the free flow valve(s) on the diver’s mask/helmet(s). Disconnect the mask/helmet(s) from the umbilical and the umbilical from the KMACS 5. Unplug the communications connectors and turn off the com- municator (R). Plug both ends of the hose and cap the outlet manifold (G) nipples on the KMACS 5 to prevent foreign matter from entering either.

Open the bleed valves on the HP yokes (S) to allow any remaining air to vent and replace the yokes on their storage posts. Disconnect the low pressure air source if used and cap the low pressure inlet

(N)to prevent foreign substances from entering the KMACS 5.

If the KMACS 5 has been used on the ocean the panels should be wiped down with a clean rag dampened with fresh water. The O-ring seal (U) on the case may be periodically treated with Armor-All or other rubber protection.

Place the KMACS 5 in a dry area and recharge the communications.

Refill any high pressure cylinders (scuba) used during diving operations and store them in a secure location.

Fig. 11 All of the outlet fittings on the KMACS 5 must be capped prior to storage.

© 2003 KMDSI Document # 041112001 15