Sierra Air Boosters
Sierra boosters are electrically powered and compress breathing air to 5000 PSI from 1500
PSI or boost air to 2216 PSI from 800 PSI. The 12000 model will boost air to 6000 PSI. Sierra boosters are available in several
models. (See chart below)
Models 9000 and 12000 are pre-set
to automatically stop at 5000 or 6000 PSI respectively. They are manually re-started. These models can also be purchased with
the ability to automatically restart when the pump senses a drop in pressure. The models 9000 A-2 and 12000 A-2 have a selectable
stop pressure switch for either 2216 or 4500 and 4500 or 6000 PSI air fills
THE SIERRA AIR BOOSTER
9000-00 Model
The 9000-00 is the standard
model and is designed to fill cylinders to one pressure setting. Pressure settings are pre-set at the factory and adjustment
in the field, when necessary, is simple and straightforward. When filling cylinders, the unit pumps until the desired, pre-set
air pressure is met and then shuts off automatically. This eliminates any guesswork in determining when the cylinder is full.
Typical settings are 2216 psi or 4500 psi.
9000-A2 Model
The 9000-A2 model maintains the same proven performance as the 9000-00 model with the added features of two pressure
settings and auto starting.
Changing
between filling pressures only involves the turn of a valve handle. For example, after filling a cylinder, the operator conveniently
turns a knob one-half turn to fill a cylinder of a different pressure. No tools are needed and both settings are pre-set at
the factory. This eliminates the guesswork involved in filling the different pressure-rated bottles and there is also no fear
of overfills because both circuits have a "vent to atmosphere" safety relief valve. Whether in the field or at the
station, alternating between 2216 & 4500 psi cylinders is easy.
12000
Models
The 12000-00,
which is designed to fill cylinders to 6000 psi, enables fire stations with 5000 psi compressors to recharge 6000 psi cascade
storage tanks. The 12000-A2 model allows the user to recharge storage bottles AND also fill SCBA cylinders. Typical settings
for the A2 are 4500 psi and 6000 psi and switching between pressure settings only requires the turn of a valve handle. ith
the 9000 A-2 and 12000 A-2 automatic on/off switching, the booster will pump until the maximum pressure setting is reached,
then will automatically shut off. After the valve is closed, the full cylinders can be replaced with empty cylinders. Re-opening
of the valve will send a low pressure signal to the booster which will automatically start pumping and repeat the cycle.
