OGSI OG-75, Installation, Operation & Maintenance Manual, Page: 22 / 52

Effective April 2006
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4.) If the Storage Tank Pressure is Above 30 PSIG (210 kPa), the Generator Switch can
be Immediately Turned to ‘Automatic’ -
This should be the case upon arriving in the morning to a system that was properly shut
down the evening before or after starting up the first time and having vented the storage
tank down to 40 PSIG (280 kPa).
The generator will now fill the tank to about 60 PSIG (420 kPa) and then remain in a
standby mode until the storage tank pressure drops to about 45 PSIG (310 kPa). It will
then begin to cycle again attempting to keep the storage tank pressure between 45
PSIG (310 kPa) and 60 PSIG (420 kPa). While in this mode, the light inside the control
switch will be on whenever the unit is cycling.
5.) Open the Valve that Allows Oxygen to Flow to Your Manifold or Application -
This valve, although not included in our standard accessory package, should be in place
to ensure a proper shut down and avoid the possibility of wasting oxygen through an
improperly closed torch valve.
6.) If An Average Oxygen Pressure Greater than 45 PSIG (310 kPa) is Required or
Demand is at a Peak -
It would be preferable to run in the continuous mode. Please keep in mind that our
specification for the maximum oxygen pressure available from a system is 45 PSIG
(310 kPa). Pressures higher than 45 PSIG (310 kPa) will only be available for short
periods of time if Oxygen is drawn from the storage tank at or above the specified
production rates for the machines. If the demand is for a higher pressure but a lower
flow rate or only for a short period of time up to 60 PSIG (420 kPa) can usually be
provided.
Caution: If your application involves metal cutting, welding, brazing, etc. We
highly recommend the use of flash guard check valves inserted as close to the
torch head in the system as possible.