Ingersoll rand E90 Oil-Free Rotary Screw Air Compressor
Technical parameter information: Data sheet

>   Performance Parameters Overview

This series of 2-stage oil free rotary screw air compressor, with humanized designs, easy installation and manipulation properties,  provides you with safe oil-free compressed air to meet  your production process demands. Ingersoll Rand oil free rotary screw air compressor has acquired the latest ISO 8573-1:2010 0-class air certificate and also has gone through TUV Rheinland® serious tests and verification. The units boasting various patent designs have inherited more than a century of Ingersoll Rand innovation in air compressor industry, and offer reliable and efficient compressed air systems to our customers.

>   Outline
Ingersoll Rand Class 0 oil free rotary screw compressor holds a time-proven design with integrated multiple industry-leading technologies. With ruggedly reliable 2 stage compression modules, UltraCoatTM technology, unique triple sealing, 46ºC rated ambient temperature design, robust bearing parts as well as the intelligent control system, the E-Series units provide efficient 0 class oil free compressed air solutions to the customers.On this basis, Ingersoll Rand has launched a redesigned E-Series oil free screw air compressor. With better performance, expanded capacity range, optimized sealing design, more compact airend and pachage layout, E-Series will bring customers better use experience and more energy-saving use experience of oil free compressed air.

>   Ruggedly reliable 2 stage compression modules
Ingersoll Rand compressor airend boasts a worldwide reputation for zero failure and low maintenance cost. The E-Series two stage compressor airends lower the heat load of different stages. The 2nd stage rotors are constructed of stainless steel to resist moisture corrosion. Ultracoat™, an Ingersoll Rand patented process, which is robotically applied to the rotor’ surface, ensures tightest rotor tolerance and realizes the continuous operation overtime without diminish in capacity.
The airend housing cabinet applies coolant in jackets for cooling, takeover heat of compression and improve compression efficiency.
The 2nd rotors are constructed of stainless steel 

>   UltraCoatTM  Unique UltraCoatTM 
Ingersoll Rand unique Ultracoat™ process, adopting Molylbdenumdisulfide (MoS2) matrix compound, featuring high rigidity and unmatched adhesion and anti-oxidation properties, is robotically applied to the rotor’s surface to obtain the uniform coating. Additionally, the screw rotors are shot blasted before this coating process to improve the surface roughness to facilitate the coating adhering. 
 UltraCoatTM superior performance helps the compressor units of the customers to realize the continuous operation overtime without diminish in capacity. Rather than using the robotically uniform coating, most competitors apply flexible Teflon coating, which will fall out during constant operation due to the thermal expansion and water vapor corrosion, thus will generate increased rotor clearance. This situation will lead to 8%-10% diminished capacity and total operation cost of the unit increased.
For example, if a 200KW unit has been operated for 8000 hours, 8% capacity loss will bring about:    
8% x 200 kW x 0.7 RMB/kW · hr x 8000 hrs =89,600 RMB additional power energy cost. 

>   Superior sealing design to ensure oil free of the air compression chamber
The units utilize unique triple sealing design and isolate the oil paths of the bearing lubrication from the air paths in order to insure the oil free quality of the compressed air.
-  SS Air Seal- Eliminates air leakage to oil path (bearing seat/gear)
-  Labyrinth Oil Seal - Eliminates oil leaks to the airend
-  Oil Discharge Seal - Once the oil leakage occurs in the above seals, oil seal will vent the oil to the atmosphere to prevent bearing oil from seeping into the air seal area.

>   High ambient temperature design
The units are designed to satisfy the applications in hot and humid subtropics and the highest rated temperature is 46°C so that the shutdown caused by high temperature in summer can be avoided. All E-Series water cooled and air cooled units can operate under these extreme circumstances.

>   Reliable components and parts
-    Bearing
Each stage of the E-Series airends has been equipped with roller bearings on the inlet end to handle radial loads in line contact and roller bearings on the outlet end to absorb thrust loads in angular contact. The extremely small airend rotor clearance is of great importance to guarantee the first-rate efficiency.  The angular contact of the roller bearings can maintain the precise position of the rotors in line with a certain special design which will decrease the airend failure rate to a great extent and increase the overhaul life.

>   World-Class Efficiency
Our new state-of-the-art modular airend design features an 
optimized rotor profile that delivers significantly improved 
efficiency and best-in-class airflow. A high-efficiency induction 
motor featuring ample sized cooling and low pressure drops is used 
in conjunction with Ingersoll Rand’s oil-free fixed and variable speed 
compressors, providing the optimum combination of high airflow with 
the lowest energy consumption.

>   Inlet air system 
E-Series inlet valve employs hydraulic actuation, which is much more reliable and requires no constant maintenance or replacement comparing to what competitive rubber diaphragm actuation may need.（for fix frequence compressor）
The combined inlet and outlet valve are used in Load/Unload control. When the butterfly type valve full opens, the outlet valve closes at the same time. When the butterfly type valve closes in unload process, the air circulates through an orifice of the valve clack and vents to the atmosphere through the linked outlet valve. The discharge of the oil gas from the oil free screw rotary air compression sump through ventilation cap, is directly vent outside the sump along with the hot gas so as to guarantee the absolute oil free quality of airend inlet air.

>   Motor
The main drive motor is exactly matched to the requirements of the compressor. Torque and shaft load requirements of the compressor were matched to design criteria that enable the motor to develop peak efficiency and power factor at full load of the compressor package. Standard units are supplied with IP55 motors, meeting or exceeding IE3 efficiency rating requirements for different regions. 
Proven, trouble-free airends with patented UltraCoat™ 
technology, enhanced bearing arrangements, a rugged 
motor design, V-Shield™ leak-free PTFE stainless steel braided 
hoses and O-Ring face seals, integrated oil lubrication and 
hydraulically actuated inlet valves provide reliability for life.
Machines with integral variable frequency drive utilize motors specifically designed for the purpose. In addition to all the features for fixed speed induction machines, the windings have a minimum 1600V winding withstand (1800V for 575V). Additional motor protection is included as standard with thermally protected stator windings (one device per phase). Motor speed is controlled using pulse width modulation (PWM) vector type motor control.

>   Optimise Your Demand
Mix and match motors and airends to achieve the exact 
level of performance and economy your operation and 
budget require

>   Cooling system
Our compressor systems are designed for 46°C (115°F) 
operation, versus other designs at 40°C (104°F). This 
provides an additional cooling margin for trouble-free 
operation at higher temperatures, prevents shutdown as 
heat exchangers foul, and protects against corrosion in 
water-cooled models for more efficient operation.

>   Simple and Serviceable
Our oil-free compressor package design is simple and 
spacious – no special tools are required to perform 
maintenance, and all components are easily accessible. 
Our durable consumables and wearables lengthen 
service intervals.

>   Equipment Inspection and Standard
Reference standards
- Ingersoll Rand air compressor accords with the local government regulations, and furthermore it holds additional more severe standards for the unit engineering parameters and performances.
- Electronic parts: according to the IEC60204, GB5226-1 standards
- Performance test and reference standard: ISO1217 Annex C; 2009
- Noise test method: ISO2151:2004
- Noise measurement standard: ISO9614-2:1996, Work station noise level +3dB(A)
- Note: Ingersoll Rand air compressors are not designed and manufactured to deliver breathing air for diving equipment or some manufacturing and chemical industries.

>   Quality Assurance
The Seller warrants that the ordered goods are manufactured from high-quality materials and standard processes, are brand new and unused, and fully comply with the quality, specifications, and performance stipulated in this Contract. The Seller further warrants that the goods ordered under this Contract, when properly installed, used, and maintained, shall be free from defects for a period of 18 months from the date of shipment from the port of export, or 12 months from the date of commissioning, whichever occurs first.

>   Ingersoll Rand China
Since its founding in China in 1922, Ingersoll Rand has been committed to building long-term partnerships with suppliers, manufacturers and customers in China. At present, Ingersoll Rand has 1 investment company, a number of trading companies, 8 manufacturing bases, 1 Asia-Pacific technology research and development center in China, and business organizations in more than 30 cities across the country.
Ingersoll Rand's largest factory in the world is located in Wujiang Industrial Park, Suzhou, covering an area of 230,000 square meters, with a construction area of 91,000 square meters and more than 700 employees. The production, quality inspection and quality control of the products will be completed in Ingersoll Rand Wujiang Industrial Park; Its supplier site evaluation, production part approval process, incoming material quality control, warehouse inventory management, manufacturing process, testing and inspection, finished product quality control, outgoing quality control and warranty are all strictly based on Ingersoll Rand's global quality regulations.