Click to Learn More:

The Best Solution for Energy Savings

243 through 1,206 SCFM: Maxima Series is Mattei’s commitment to energy savings and environmental protection. This energy saver is ideal as a base load machine and unrivaled in combination when using an energy saving Optima VSD compressor as a trim machine.  Together, they generate energy savings that are hard to beat.

Simply Superior
Engineered like all Mattei’s to operate at standard motor speeds, Maxima’s massive airends turn at just 1,200 rpm versus our usual 1,800 rpm speeds. It is the incredible mechanical efficiency of Mattei airends that leverage this reduction in speed to deliver some of the lowest kW/100 CFM performance in the industry. In fact, the efficiency and output of single-stage Maxima rivals that of two-stage rotary screw type air compressors.

However, Maxima's airend uses but two (2) Babbitt bushings versus the eight (8) roller bearings and (4) thrust bearings found in a two-stage screw, and about 1/3 of the oil. Maxima's simplicity and durability will save you a fortune on energy, and simply deliver superior value and unrivaled durability over the life of the compressor, particularly when compared to rotary screw air compressors.

Benefit from sophisticated superior efficiency performance, quiet dependable operation and low maintenance costs. Featuring quiet (as low as 65 dB(A)) cabinet enclosures, electronic controllers, energy saving soft-start wye delta motor starters, premium efficiency TEFC motors, air-cooled aftercoolers and optional integrated refrigerated air dryers, to get superior performance and energy savings.

Save Energy, Save the Environment
Mattei is friendly to your wallet and the environment, too. Each unit holds very little lubricant (typically less than half that of a rotary screw air compressor) which saves you a small fortune on oil changes and disposal costs. The highly efficient mechanical air/oil separation chamber delivers high quality air to the air/oil separator filter thus, it sees very little lubricant and provides up to 10,000 hours of service, and low 1-3 ppm oil carryover.

Available in 460v & 575v, 3Phase/60Hz.

MAXIMA SERIES STANDARD FEATURES:

CONDENSATE DRAIN AND SEPARATOR KIT
The kit includes a condensate separator and a timed electronic drain.

HIGH-EFFICIENCY AIR INTAKE FILTER KIT
Heavy-duty high efficiency air intake filter is an option for dirty, dusty environments. Removes solid particles > 3μ with a filtering efficiency up to 99%. (Model Maxima 55 and larger)

ENERGY CONSUMPTION
Leveraging the superior slow speed advantages engineered into all Mattei airends, Maxima boasts some to the lowest energy consumption per kW/100 CFM performance in the industry. Which rivals two-stage rotary screw air compressors with a fraction of the complexity and low cost of operation.

RELIABILITY
These compressors are designed for industrial use 24 hours a day and 12 months a year at constant pressure. Mattei compressors' running often exceeds 100,000 working hours, as evidenced by our revolutionary 10-year warranty.

INCREDIBLY QUIET
Maxima Series compressors are cabinet enclosed machines that operate at a constant 1,200 rpm and deliver sound levels as low as 65 dB (A).

BEARINGLESS AIRENDS
Much like the connecting rods on your engines crankshaft, the heart of the Mattei rotor stator unit (RSU) is the rotor which is simply supported by two (2) white metal Babbitt bushings that routinely deliver >100,000 hours of life. Single-stage screw type compressors use up to six (6) radial and thrust bearings engineered for only 50,000 hours (ASME B-10) of life.

AIR QUALITY
The exclusive three-stage oil separating system guarantees a maximum oil carry-over in the air lower than 3 ppm. Moreover, the air cooled aftercooler ensure approach temperatures of 18°F or less.

PREMIUM EFFICIENCY MOTOR
Premium efficiency totally enclosed fan cooled (TEFC) electric motors is standard on Maxima Series.

DIRECT COUPLING
This is obtained with a flexible coupling between motor and compressor, without any need for belts. It is without roller bearings needing maintenance.

MOTOR STARTER
Energy saving wye delta motor starters is standard on Maxima Series.

AIR TREATMENT
Air cooled aftercooler with 18°F approach temperature. Moisture separator with automatic drain valve is optional on Maxima Series.

MAINTENANCE
Maintenance operations only include changing the oil at predetermined intervals, cleaning or replacing the air filter and cleaning the radiator. Benefit from half the oil volume of rotary screw types, and oil separating filters that can reach 10,000 working hours, for significant savings over the life of the machine.

CAPACITY CONTROLS ADAPT TO YOUR DEMANDS
The layout and design of every air system is different. Thus, Mattei provides a variety of control schemes as standard to better adapt to the demands and dynamics of your system, to save energy and prevent short-cycling and ambient oil misting problems created by inflexible control schemes and underutilized compressors.

MODULATION OPERATING MODE AT CONSTANT PRESSURE
Thanks to a modulating proportional intake valve that supplies air at constant pressure, these compressors can even work without air receivers. This method automatically adapts to system demands and is ideal for applications with little storage or continuous high air demands.

AUTOMATIC ON LOAD / OFF LOAD
Load/Off Load maintains line pressure within a minimum/maximum pressure range, and the compressor may stop and restart according to air demand. Ideal for applications with adequate air storage tanks or large variations in air demand.

COMBINED ON/OFF LOAD AND MODULATION REGULATION
This regulation allows Mattei compressors to modulate within a set pressure range (for example, ± 4-5 psi). Should the air demand decrease, the compressor will off-load and stop, with evident energy savings. Ideal for applications with little storage and large variations in demand.

ELECTRONIC CONTROLLERS
Maxima Series is equipped with an exclusive state-of-the art computerized controller, Maestro XS.

Maestro XS, automatically controls, monitors and programs the unit's operation, and has an option to connect to a PC for a remote control. If connected to other compressed air packages equipped with Maestro XS, the unit can become master of a compressed air plant, thus saving on the installation of a superior controller. Maestro XS can be interfaced via web or cellular technology to provide remote service monitoring.

MAXIMA SERIES OPTIONAL FEATURES:

HIGH EFFICIENCY AIR INTAKE FILTER KIT
Heavy-duty high efficiency air intake filter is an option for dirty, dusty environments. Removes solid particles > 3μ with a filtering efficiency up to 99%. (Model Maxima 30 only)

INTEGRATED REFRIGERATED DRYER
Integrates a refrigerated dryer into cabinet. Reduces installation costs and space requirements. space requirement. (Models Maxima 30 thru Maxima 75 only)

OIL-WATER SEPARATOR KIT
Oil-water separator is fitted inside the cabinet, to ensure separation of oil from the condensate drain water.

CONVERTING SERIAL BOARD
Allows communication with the protocol converter. One serial board is required for each compressor.

INTEGRATED HEAT RECOVERY KIT
Plate type oil/water heat exchanger, thermostatic valve and connecting pipes mounted inside cabinet. Ideal for hot liquid process applications. (Maxima 55 and larger)

AIR TREATMENT PRODUCTS
Mattei offers comprehensive air treatment accessories to complete your air system including: in-line coalescing filters, refrigerated air dryers, desiccant air dryers, sterile in-line filters, air receiver tanks, timer and demand style condensate drains, and oil/water condensate separators.

1. Intake Filter
2. Automatic Intake Valve
3. Oil Chamber
4. Compression Chamber
5. Oil Cooler
6. Oil Filter
7. Labyrinth
8. Compressed Air
9. Rotor
10. Coalescing Filter
11. Oil Return Valve
12. Minimum Pressure Non Return Valve

The air is drawn in by means of a filter and passes through a modulating proportional valve that regulates the air delivery according to the demand. This valve automatically maintains the working pressure at constant levels.

Therefore, the air enters the compression chambers or vanes that the stator, the rotor, the vanes and the covers have formed. This rotor is installed eccentrically to the stator and is equipped with longitudinal grooves in which the blades slide. It is the centrifugal force that pushes the blades against the stator's wall.

An efficient oil injection system guarantees a perfect holding among the moving parts, cooling and lubrication. An oil film on the stator's inside surface prevents the moving parts from wearing by avoiding a direct contact with the blades.

Air compression is triggered by the volume reduction of the vanes in the stator during rotation. By passing through mechanical and coalescing separation stages, the mixture of compressed air and oil is purified until the maximum oil carry-over in the air does not exceed 3 ppm (parts per million).

Finally the air is cooled in the radiator and the condensate is eliminated by a condensate drain.