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should not pose a significant increased risk of fire
or combustion in Kirby Morgan helmets and masks
low-pressure components and does not warrant the
need for the stringent specialized oxygen clean post-
sampling and particulate analysis normally accom-
plished for components used in high pressure oxygen
valves, regulators, and piping systems. The decision
for using 50% has been primarily based on a long
history of operational field use.
As long as Kirby Morgan helmets and masks are
cleaned and maintained in accordance with the
maintenance manual, the equipment should not pose
a significant increased risk of a fire or ignition origi-
nating in the helmet or mask low-pressure (<250
p.s.i.g. /<17.2 bar or less) components when used
with enriched gases of up to 50% oxygen. However,
CAUTION should be exercised any time enriched
gases are handled or used.
In general, helmets and masks used primarily for
mixed gas use are subject to far less oil and partic-
ulate contamination than those used for air diving.
For this reason, helmets and masks commonly used
with both air and enriched breathing gases should
be cleaned and maintained with greater care and
vigilance. It is important that all internal gas-trans-
porting components, i.e., side block, bent tube, and
demand regulator assemblies remain clean and free
of hydrocarbons, dirt, and particulates. Whenever
the equipment is depressurized, all exposed ports or
fittings should be plugged or capped to help maintain
foreign material exclusion.
Gas train components should be cleaned according
to the procedures outlined in the operations manual
at least annually and/or whenever contamination is
suspected or found. Helmet interior and exterior sur-
faces should be cleaned at least daily at the comple-
tion of daily diving operations. Helmets and masks
used in waters contaminated with oils and other
petroleum or chemical contaminants may require
cleaning after each dive.
Helmet and mask components requiring lubrica-
tion should be lubricated sparingly with lubricants
approved for oxygen use such as Christo-Lube
Krytox
, or Flourolube. KMDSI highly recommends
®
using Christo-Lube
, and uses Christo-Lube
®
the assembly of all KMDSI gas train components.
Regardless of the approved lubricant used, never mix
© ⅯⅯⅩⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 120613005
WARNING
Do not use lubricants of any kind on the
diaphragm or exhaust valves. Use of lu-
bricants can attract and hold debris that
could interfere with the proper operation
of the regulator.
different kinds of lubricants. Persons mixing han-
dling and working with breathing gases should be
properly trained in all aspects of safe gas handling.
NOTE: Refer to Chapter 7 for removal and disassembly
/ reassembly procedures.
NOTE: The helmet weights do not need to be removed
from the helmet unless fiberglass damage is present or
suspected.
NOTE: During annual overhauls, all O-rings and soft
goods, i.e., valve seats and washers should be replaced.
KMDSI offers kits that have all the necessary parts.
NOTE: The neck dam rubber need not be replaced if
the inspection reveals no damage or significant wear and
the rubber components are not dried out.
NOTE: The oral nasal mask and oral nasal valve re-
quires replacement, only if inspection reveals damage,
distortion, or signs of damage.
NOTE: All threaded fasteners and parts require care-
ful cleaning and inspection as well as the mating parts.
Replace any and all threaded parts or components that
show signs of wear or damage.
KMDSI highly recommends a certified KMDSI repair
technician make all repairs and that only genuine KMDSI
repair and replacement parts be used. Owners of KMDSI
products that elect to do their own repairs and inspections
should only do so if they possess the knowledge and ex-
perience. All inspections, maintenance and repairs should
be completed using the appropriate KMDSI Operation and
Maintenance Manual.
Persons performing repairs should retain all replacement
component receipts for additional proof of maintenance
,
®
history. Should any questions on procedures, components,
or repairs arise, please telephone Kirby Morgan Dive Sys-
during
®
tems, Inc., at 1-805-928-7772 or E-mail them at kmdsi@
kirbymorgan.com or telephone Dive Lab, Inc., at 1-850-
235-2715 or E-mail them at divelab@aol.com.
®
SuperLite
17B
163
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