Demand Regulator Free Flow - Kirby Morgan 77 Operation And Maintenance Manual

Kirby Morgan 77
®
Immediately notify topside, check to insure your um-
bilical is clear and return to the diving station using
the emergency breathing supply. Avoid making a rapid
ascent if at all possible.
Once at the surface, or inside the bell, the diver may
remove the helmet if needed. Never ditch the helmet
underwater unless conditions absolutely require that.

3.11.4 Demand Regulator Free Flow

If the demand regulator free flows, turn the adjustment
knob in (clockwise) until it stops. If the free flow
cannot be stopped, the dive should be aborted. Even
if there is no serious problem to the diver, the dive
should be aborted and the problem with the regulator
corrected.
Sometimes it may be necessary to tilt your head so
the regulator is face up to help stop the regulator in a
free-flow situation.
DANGER
Rapid ascent is dangerous. It can lead to
air embolism or decompression sickness.
Air/gas embolism can cause immediate
loss of consciousness and/or death.
Even on a no decompression dive, a
rapid ascent may cause decompression
sickness. A diver must only make a rapid
ascent when he is in immediate danger of
death by drowning or asphyxiation.
DANGER
Ditching the helmet underwater must be
avoided. If the diver ditches the helmet
underwater he will not be able to see.
In many instances, even if the air sup-
ply is interrupted, topside will be able to
get it back on line quickly. Do not ditch
the helmet underwater unless you are
completely out of breathing gas and it is
impossible to return to the surface due
to entanglement of your equipment or
similar circumstances.
52 © ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003