KAESER Low Pressure Compressors
More Compressed air, less energy!
Why Kaeser Compressors are the right choice for use on your marine vessel...

Energy Savings. All models come with a unique on-off control system. During periods of no air demand, the unit will completely shut-down, using absolutely no power. Upon demand, the unit automatically starts and delivers to capacity. Competitor systems can use as much as 70% of full-demand electric power levels during periods of no air demand.

Fuel efficiency. Kaeser rotary screw compressors are 20% more efficient than reciprocating piston compressors - less horsepower required to acheive the same air delivery - less power needed/less fuel consumed.

Low noise level. Sound absorbing materials and heavy-duty vibration isolators in every Sigma screw compressor keeps operating noise to a minimum. The gentle hum of a Sigma compressor operating at full load won’t even interupt your conversation. Allowing for greater flexibility for placement.

Less vibration. Rotary screw technology is smooth and vibration-free thanks to heavy-duty rubber isolators on every model. Kaeser compressors can be placed near living quarters without fear of disrupting personnel.

Soft start technology standard on all SM models and larger. Magnetic Wye-Delta reduced voltage starter ensures low starting current and smooth acceleration. Reducing strain on electric system - further saving fuel.

Easy installation. Sigma screw compressors are compact and can be installed quickly and easily.

Cool running. The oil injected during compression acts as a lubricant and sealant, as well as a coolant for the screw pump. The absorbed heat is removed from the oil when it flows through the generously sized cooler.

Greater service life. Designed to be run up to a 100% duty cycle. You can’t do that with a piston compressor. Main bearing rated at 100,000 hours load life.

Kaeser Global service and parts distribution. With over fifty subsidiaries and branch offices, KAESER Compressors is active in every industrialized country in the world. When you buy a KAESER product you can be assured that expert support is near at hand.

Kaeser guarantees parts availability for at least 15 years from purchase date. Kaeser further guarantees that any standard Sigma screw compressor emergency repair part will be shipped within 24 hours of order, or the parts are free!

How KAESER Screw Compressors Operate

Atmospheric air is drawn through the cabinet prefilter into the air inlet filter where it is further cleaned. The atmospheric air is compressed within the efficient Sigma screw airend. The Sigma screw airend is driven by an electric motor. Oil is injected into the rotor housing to lubricate, seal and remove heat generated by compression. As a result of this internal cooling mechanism the temperature during compression reaches only 180°F under normal operating conditions.

Oil is separated from the compressed airstream by the 3-stage oil/air separator. The oil is cooled, flows through a micro oil filter and returns to the injection point. The oil circulates soley by internal pressure, eliminating the need for an oil pump.

After passing through the air/oil separator, the compressed air is passed to the aftercooler via the minimum pressure check valve. This valve maintains minimum system pressure to ensure continuous oil injection into the airend. The temperature of the compressed air is cooled to within 10-15°F of the ambient temperature by the air-cooled aftercooler, thus removing a large percentage of moisture from the compressed air.


Maintenance Friendly
The SX and SM units have wide-opening access doors and removeable panel with key locks to provide easy access to all important components. Quick change devices on the separator and cooler allow fast, complete fluid changes. Motor overload, high air and lubricant discharge temperature, reverse rotation, and loss of drive are signaled by lighted indicators. Unit shuts down immediately if a malfunction occurs.

Standard features:
· Single stage, flooded rotary screw airend with power-saving, proprietary Sigma Profile.
· TEFC motor, 230/460V, 3-phase, 60 Hz, 3600 rpm, class Finsulation, 1.15 service factor.
· V-belt drive with automatic tensioning device for optimum power transfer.
· 40 micron package prefilter and 4 micron air intake filter with replaceable, cleanable cartridges.
· Full voltage magnetic starter with 115-1-6- control voltage.

Other KAESER Components

High Temperature Refridgerated Dryer Cools, dries, and cleans in one package. Can handle up to 55 CFM. Only 28 - 10 - 13 inches.	Storage Tanks Sized to meet your needs. Horizontal or vertical orientation.	Advanced Filtration Modular connections. Color coded for easy identification. Cleans up to Grade D.