GB
21
Regulator Owner’s Manual
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Attaching the First Stage to a Cylinder Valve (Yoke Connection)
WARNING: OPEN VALVES SLOWLY TO AVOID OVER-
PRESSURISATION. When pressurising your SCUBA system, be sure
to open the cylinder valve slowly to minimise the generation of heat.
Failure to do so, with Enriched Air Nitrox (EAN) present, increases the
risk of combustion that can lead to serious injury or death.
It is considered safe practice, especially when using EAN, to open the
cylinder valve slowly and let the first stage pressurise slowly. Rapid
pressurisation causes adiabatic compression of the breathing gas, which
generates heat inside the first stage. Heat, along with elevated percentages
of oxygen and an ignition source (from contamination) are the ingredients
that can cause combustion. This is why it is necessary to keep the interior
of the regulator clean, along with the slow opening of the cylinder valve.
For regulators over 21% oxygen please see pages 6,7and 8.
1. If fitted, check the second stage IVS/RVS control switch to ensure that it is set
to the “MIN” (–) position prior to connecting your regulator to the cylinder.
2. If present, gently turn the inhalation
control knob “in” (clockwise), only
until it stops. Do not apply excessive
pressure.
3. If you are using a cylinder with a yoke
connection valve, check the cylinder
valve O-ring is fitted and not worn or
damaged. If you are using a high
pressure cylinder with a DIN connection
valve, remove the protector cap from
the first stage to inspect the sealing
O-ring of the DIN connector. If the
sealing O-ring is damaged or worn,
replace it before mounting the regulator
on the cylinder valve.
CAUTION! Use a small amount of an appropriate lubricant (such as
Christo-Lube) LIGHTLY applied to the thread of the Din Handwheel
periodically. This prevents seizing on the Cylinder Valve. DO NOT OVER
LUBRICATE or apply to the internals of the handwheel or cylinder valve
gas-way.
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