Opening The Breathing Gas Supply To The Helmet - Kirby Morgan 77 Operation And Maintenance Manual

Kirby Morgan 77
®
To separate the connectors remove the tape, grasp
them at the thickest part, place your thumbs against
each other, and push apart until the connectors are
disconnected.
Do not twist the connectors. Do not pull them apart
by pulling on the thin part of the wires.
3.8.3 Opening the Breathing Gas Supply to
the Helmet
Prior to turning on the air supply for the helmet, check
to see that the free flow valve is closed and the regula-
tor adjustment knob is all the way in.
Slowly bring up the gas pressure to the helmet to 150
p.s.i.g. (10.2 bar). Slowly back out on the regulator
adjustment knob until a slight free flow develops, then
turn the adjustment knob in (clockwise) until the free
flow just stops.
To properly check the breathing system you must
completely don the helmet.
3.8.4 Fogging Prevention
A thin film of anti-fogging solution may be applied to
the interior of the polycarbonate face port prior to the
dive to help prevent fogging during the dive. A mild
liquid dish washing detergent, or other commercially
available anti-fogging solutions, may be applied with
a soft rag or paper towel to the interior of the port.
WARNING
invisibly damage the polycarbonate face
port and cause it to shatter upon impact
from any strong blow. If the face port
fails underwater the helmet will flood and
drowning may result.
44
Never use any aero-
sol propelled sprays
near the face port of
the any Kirby Morgan
helmet or band mask.
The propellant used
in these aerosols can
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
A thin film of dish soap or other anti-fogging solu-
tion should be applied to the lens prior to the diver
donning the helmet.