Pre Dress-In Procedure; Pre-Dive Inspection - Kirby Morgan KMB-18 A/B Operation And Maintenance Manual

KMB 18 & 28 MANUAL

2.2 PRE DRESS-IN PROCEDURE

Before dressing in for a dive, inspection of the
Band Mask system must be made to be sure it is
in proper working order. This must be done well
in advance of the dive, so any problems can be
fixed without delaying the dive. The following
steps are part of the recommended daily mainte-
nance which is also in Section 4.1.

2.2.1 Pre-Dive Inspection

Inspect the exterior and interior of the Band
Mask.
1) The demand regulator cover assembly (51)
must not be dented.
2) Inspect the regulator hose assembly (117a) on
the "A" model, and the bent tube assembly (117b)
on the "B" model. There must be no dents or kinks
in the bent tube assembly. The hose assembly
must be in good shape.
3) Inspect the face port (27). It must be in good
condition.
4) Check the inside of the Band Mask. Be sure the
communications wires are hooked up and there
are no loose nuts. Check the wire lugs to make
sure they are not touching each other. This would
cause a short (no communications).
5) Inspect the oral nasal mask (9). Make sure it is
on the regulator mount nut (8) properly.
6) Check the screws (29) on the port retainer (28).
They must be adjusted to the proper torque setting
(12 inch pounds (13 kg cm)) per the specifica-
tions in Appendix 1 of this manual. Binder head
screws are used in this application for their self
locking characteristics. Overtightening will strip
out the threaded inserts in the Band Mask frame
(17).
page 18
© Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 010518001
DANGER: All parts on the Kirby
Morgan 18A/B must be adjusted to their
proper torque specifications. See Appen-
dix 1 for a complete listing of torque
specifications for each part. Failure to
adjust parts to the recommended specifi-
cations could lead to Band Mask failure
and accidents. This could be fatal.
DANGER: Never use RTV to glue
on the port retainer or to hold the threaded
inserts in the mask if they are loose. If the
RTV fails it could cause the mask to flood
and lead to drowning. This can be fatal.
7) Check the spider (1) to ensure there are no tears
or cracks in the material. If the spider is worn or
cracked it must be replaced. All five "legs" of the
spider must be present.
DANGER: The spider must be in
good condition. If it is worn or cracked it
could fail during the dive. This could cause
the mask to flood or come off the diver's
head. This could lead to drowning.
8) Check the hood and face seal (2). The hood
must be in good condition with no tears or rips.
The face seal must be properly glued to the hood.
If it is not, or there are tears in the face seal this
will cause the regulator to free flow.
CAUTION: A torn face seal will
cause the regulator to free flow. This could
lead to a rapid consumption of the diver's
air supply if bottled breathing gas is be-
ing used.
9) Check the screws (15) that hold the bands (16
& 68) in position. They must be adjusted to the
proper torque setting (see torque specs pg. 89)
When the screw are adjusted properly, the hood
and face seal cannot be moved from under the
bands.