![Kirby Morgan SuperLite 27 Скачать руководство пользователя страница 56](http://html.mh-extra.com/html/kirby-morgan/superlite-27/superlite-27_operation-and-maintenance-manual_1971913056.webp)
40
© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130115001
SuperLite
®
27
®
3.9 Diving Procedures
3.9.1 Standing by to Dive
The diver may wear the neck dam ring assembly
without discomfort if he is standing by to make a
dive. However, the helmet itself must always be the
last thing put on before the diver enters the water.
Everything else must be ready to go before the diver
puts the helmet on so he won’t have to support the
weight of the helmet while out of the water.
3.9.2 attaching the umbilical to the
Harness
The umbilical must now be hooked to the diver’s
harness by means of a suitable clip that is bound to
the umbilical. Some divers and companies prefer
a quick release clip and others prefer a clip that is
screwed together so the diver cannot easily remove
it from his harness. The securing of the umbilical
keeps the pull of the hose at the diver’s harness and
not on the helmet.
There must be no chance of the umbilical hanging
up when the diver jumps. Also, the defogger valve
should be turned on to overpressure the helmet to
prevent the possibility of water pressure from invert
-
ing the helmet exhaust valve when hitting the water.
The diver must report to the surface immediately
after the entry. It is a good policy to descend 10 or
20 FSW (3-6 MSW), pause and check the regulator
adjustment knob to ensure adjustment for the least
breathing resistance.
The purpose of this adjustment knob is to allow the
diver the ability to compensate for variations in um
-
bilical supply pressure. This adjustment device oper
-
ates by simply increasing or decreasing the amount
of spring bias tension on the demand regulator inlet
valve. The intent of this bias adjustment device is
strictly to allow the diver to make adjustments for
variations in umbilical supply pressure.
This adjustment device is not intended as a minimum-
maximum device. Minimum and maximum applies to
supply pressure only. The adjustment knob should be
adjusted by the diver to be at the easiest breathing
setting at all times.
Diving a KMDSI helmet or band mask with a bias
setting greater than that just necessary to keep the
demand valve from free flowing increases the work of
breathing and reduces the diver’s ability to perform
heavy work.
Then the diver checks in with the surface before
descending to the job. If a closed bell is being used,
the diver enters the water from the bell and pauses
Never dive without attaching the umbili-
cal to some type of harness or clip on the
diver’s body. Never allow the umbilical to
pull on the helmet directly or the diver
could suffer a neck injury.
WARNING
3.9.3 Diver Dons Helmet
The diver dons the helmet as per the previous section
of this manual.
3.9.4 Diver Check Gas Flow Systems
The diver must check out the breathing system him
-
self as the tender finishes dressing him. Operate the
defogger valve, the demand regulator, and the purge
button to assure yourself of proper operation before
entering the water.
3.9.5 Communications Check
The communications system, sending and receiving,
should be checked at this point.
3.9.6 Diver Ready
The diver is now ready to enter the water. He should
be assisted to the water if needed. If a welding lens
is being used, make sure it is hinged up all the way if
the diver is making a jump entry. We do not recom
-
mend jump entries. A quick overall inspection by the
tender is done and the diver is given the OK.
3.9.7 Water Entry and Descent
T
he tender must make sure there is a sufficient length
of umbilical clear if the diver is using a jump entry.
Always use a snap hook to attach the diver’s umbili
-
cal to the harness to avoid a direct pull on the diver’s
helmet.