Gas Flow Systems Check - Kirby Morgan KMB-18 A/B Operation And Maintenance Manual

If you are using waterproof connectors for your
communications (13), take extra care in handling
these pieces. To connect the male (80) and female
parts, align the large pin on the male connector
(80) with the yellow mark on the female connec-
tor. Press the two connectors together until you
hear a distinct "pop". Do not twist the connec-
tors. Tape the two connectors with a bit of elec-
trical tape to prevent them from pulling apart.
To separate the connectors remove the tape, grasp
them at the thickest part, place your thumbs
against each other, and push apart until the con-
nectors are disconnected. Do not twist the con-
nectors or pull them apart while holding onto
the thinner wire.
Fig. 2.5 Tape the two mating waterproof connectors to-
gether with electrical tape prior to diving.
Document # 010518001 © Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved.
KMB 18 & 28 MANUAL

2.2.6 Gas Flow Systems Check

If the regulator adjustment knob (47) is screwed
out all the way, in its storage position, screw it in
all the way. The umbilical air, or gas supply is
turned on pressurizing the side block and regula-
tor. Now unscrew the regulator adjustment knob
(47) until a slight steady flow is present, then turn
it back in until it just stops.
Fig. 2.6 Screw in the regulator adjustment knob prior to
turning on the diver's breathing gas.
To check the breathing system correctly, open the
zipper and don the Band Mask by holding it
firmly against your face. Test the defogger sys-
tem by turning on and off the defogger control
knob (85). The regulator (63a/b) should be ad-
justed by turning the adjustment knob (47) out
until a slight steady flow starts, then back in until
the flow just stops. Next, the demand regulator
system (63a/b) is checked for proper function:
breathe in and out. Inhalation and exhalation
effort should be nearly unnoticeable. Press in on
the purge button (51d) in the regulator cover
(51b). A strong burst of gas should follow.
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