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2.4 EMERGENCY PROCEDURES
2.4.1 Flooding
In the event of partial or complete flooding, the
diver may clear the Band Mask quickly by getting
the Band Mask in an upright position (normal
swimming or working position) and activating
the defogger control knob (85) or by pressing in
on the manual purge button (51d) in the center of
the regulator cover (51b). Tilt your head forward
to clear the Band Mask more quickly using the
water dump valve (66). The opening in this valve
is much larger than the opening in the regulator
exhaust valve (62). After clearing, cautiously
check for additional flooding. If the Band Mask
continues to take on water, return to the diving
station, swimming face down with the free flow
knob on.
2.4.2 Inhalation Resistance
If breathing becomes difficult, adjust the demand
regulator adjustment knob (47), for easier breath-
ing by rotating the adjustment knob counter clock-
wise. If the breathing does not get noticeably
better press the purge button in the regulator
cover (50). If a surge of gas does not flow with this
action, open the auxiliary valve (103). If the flow
is noticeably better, immediately notify topside
that you are on auxiliary gas. Insure your umbili-
cal is clear and return to the stage or decent line.
The diver should stay in communication with
topside personnel and make preparations to abort
the dive. The console operator should check to
ensure the supply pressure to the diver is at the
proper pressure.
Document # 010518001 © Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved.
KMB 18 & 28 MANUAL
2.4.3 Gas Flow Stops
A stop of flow in the demand regulator system
usually indicates the main gas supply has stopped.
The diver must first open the auxiliary valve by
turning the knob (100). If there is still no flow
from the demand regulator, the defogger valve
should be opened. CAUTION: if the defogger
valve is left open, the bail out bottle will drain
very quickly, particularly if the diver is deep.
Immediately return to the diving station using the
auxiliary breathing supply. If the diver is working
near the surface the weight belt may be dropped
to speed ascent.
DANGER: Rapid ascents are dan-
gerous. Even on a no decompression
dive, a rapid ascent may cause decom-
pression sickness. A diver should only
make a rapid ascent when he is in imme-
diate danger of death by drowning or
asphyxiation.
DANGER: Ditching the Band Mask
underwater must be avoided. If the diver
ditches the Band Mask underwater he will
not be able to see. In many instances,
even if the air supply is interrupted, top
side will be able to get it back on line
quickly. Do not ditch the Band Mask un-
derwater 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 circum-
stances.
If an open bottom bell is used it should be posi-
tioned as close as possible to the diver. The
diver's hose must be fed through the bell stage so
that the diver can find his/her way back to the bell
if necessary. The top of the open bottom bell must
be filled with the correct breathing gas for the
diver's depth. In addition, the bell must be
equipped with communications.
page 29
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