Hollis Explorer User Manual - page 78
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FILLING THE GAS SUPPLY CYLINDERS
The nitrox cylinder has a maximum fill pressure. This is stamped on the
cylinder and must be checked before filling. Refer to regional limitations for
maximum fill pressures. Install the nitrox cylinder into the case and tighten
the cam band. Now install the regulator DIN connection. Ensure the LP
hose is routed through the molded hose retainers in the case back. Other-
wise, the LP hose will obstruct closure of the case.
!
DANGER: Although the EXPLORER will analyze its own gas supply
it is still important that you always analyze your gas prior to use.
! WARNING: If you suspect that the cylinders have become contami-
nated with salt, water or other contaminants then you must get the
cylinder inspected and cleaned as appropriate.
GAS ENDURANCE
Gas endurance is defined by the Dive Control Parameter (DCP) setting.
For example, a 5 liter cylinder pressurized to 200 bar/2940 psi and assum-
ing a usable gas pressure of the working pressure (minus the regulator
interstate pressure of 11 bar/161 psi) this equates to 189 bar/2779 psi
available.
Assuming a DCP setting of 50% and a worst case FO
2
of 32%. The EX-
PLORER gas supply will last a maximum of 189 minutes based on normal
swimming work rates.
At extremely high ventilation rates (75 l/min), which is sustainable by a
fit Navy diver for only a matter of minutes, the maximum gas endurance
could reduce to as low as 57 minutes.
The EXPLORER will continuously update gas minutes remaining through-
out the dive for any DCP setting and work rate.
!
DANGER: High pressure gas cylinders (especially nitrox cylinders)
must have their cylinder valves opened slowly to avoid risk of
injury.
This duration is also dependent on how much loop venting, mask clearing,
BCD/drysuit inflation occurs.
!
NOTE: In Europe, cylinder valves for use with the EXPLORER
must be certified in accordance with EN12021.