© Miller Diving All Rights Reserved Document # 030715001
10
Prior to the dive, the emergency cylinder valve is turned
on, pressurizing the first stage regulator and hose. The
emergency on/off valve is closed. In event of an emer-
gency (loss of main gas supply) the emergency valve is
turned on, supplying emergency gas to the Helmet. Us-
ing only the Demand Regulator will conserve the lim-
ited emergency gas supply. The diver's weight belt may
be dropped to assist in rapid ascent to the surface
The above recommendations are basic guidelines only.
Diver preference and/or employer's regulations will best
determine proper emergency procedures. Comprehen-
sive emergency training is considered absolutely neces-
sary for safe diving operations.
WATER LEAKAGE
In the event of a small amount of water entering the in-
terior of the Helmet or an emergency flooding, the clear-
ing procedure is the same. Open the Free Flow Valve
and close the Side Exhaust. This will force any water
out the lowest part of the Demand Regulator through the
Exhaust Valve.
Alternatively, the Regulator Exhaust should be closed
and the side exhaust opened with the head tilted to the
side, so Side Exhaust is lowest point in Helmet. Water is
blown out with Free Flow Valve.
It can be determined if the Rubber Exhaust Valve is bro-
ken off or obstructed (open) with a foreign object, by
shutting off Free Flow and very carefully attempting to
breathe with the Demand System. If water enters, clear
it out again with the Free Flow Valve. If the malfunction
continues, the dive must be terminated and the problem
corrected. Remember to inspect the diaphgram and neck
dam for damage also.
If water remains in the rear of the Helmet:
The Side exhaust should be fully closed. The Regulator
Exhaust should be partially closed, and the Free Flow
Valve lightly turned on. This will overpressure the Hel-
met and force any water out of the lowest point, the Neck
Seal. Hold securely on to the Helmet with at least one
hand while attempting to blow out any water.
NOTE: This is wet suit procedure only! Do not at-
tempt this if Helmet is mated to a dry suit.
2-E
RECOMMENDED MATERIALS FOR
MAINTENANCE
SILICONE RUBBER SEALANT:
Valve bodies, the Face Plate, and fittings are sealed and
bonded to the Helmet Shell with Silicone Rubber Seal-
ant.
WET SUIT GLUE:
Rubber components are cemented to the Helmet Shell
with Wet Suit Glue. A good rubber contact cement may
be used if Wet Suit Glue is not available.
SILICONE GREASE:
Threads, moving parts, O-rings and various rubber parts
are lubricated with Silicone Grease. It should be a non-
toxic, oxygen compatible formula.
WARNING: Do not modify this
helmet. Removal, modification or
replacement of any MILLER component
with non MILLER parts will make this
helmet unsafe for diving. Use only genuine
MILLER replacement parts!
Diver with emergency gas supply
connected to the helmet.
