At the heart of each HPC ESD series direct drive rotary screw air compressor is the specially designed airend with flow-optimised Sigma Profile rotors delivering more compressed air for less energy consumption. The efficiency of the airend is further complimented by a highly effective cooling system with dual-flow fan. This innovative design not only enhances cooling performance, but also minimises sound emissions. Furthermore, separate intake of motor-cooling air and air for compression from the ambient surroundings ensures optimum motor cooling and increased compression performance.

"HPC Air Compressors Come Complete With A Fully Inclusive 5 Year 'No Quibble' Parts & Labour Warranty"

The HPC ESD series rotary screw compressors are the perfect partners for high efficiency industrial compressed air stations. The internal SIGMA CONTROL 2 compressor controller offers numerous communication channels, which allows seamless connection with advanced master controllers, such as KAESER’s SIGMA AIR MANAGER, and in-house centralised control systems. This enables simple set-up and achieves unprecedented levels of efficiency. 

The distinctive and eye-catching design of the HPC ESD series from the outside is complemented by intelligent component layout on the inside for even greater energy efficiency: All service and maintenance points are within easy reach and directly accessible. This saves both time and money when it comes to servicing

Complete unit

• Ready for operation
• Fully automatic
• Super sound-proofed
• Vibration-damped
• All panels powder-coated
• For ambient temperatures up to +45 °C
• Service-friendly design: Motor bearings can be lubricated externally (also applies to drive and fan motors).

Airend

• Single stage with cooling fluid injection for optimal rotor cooling
• Genuine KAESER rotary screw airend with energy-saving SIGMA profile
• 1:1 Direct drive

Cooling fluid and air circuit

• Dry air intake filter with pre-filtration
• Inlet silencer
• Inlet and vent valves, pneumatic
• Cooling fluid separator tank with three-stage separator system
• Pressure relief valve
• Minimum pressure check valve
• Thermostatic valve and eco fluid filter in coolant circuit
• Fluid and compressed air cooler (air-cooled as standard)
• Two fan motors, one speed-controlled
• Kaeser centrifugal separator with electronically-controlled condensate drain for energy savings without pressure loss
• Piping and centrifugal separator made from stainless steel
• Optionally available water-cooled version: Fluid and compressed air aftercooler implemented as water-cooled plate or optionally available tube-type heat exchanger.

Heat recovery (Option)

• Optionally available with integrated fluid/water plate-type heat exchanger and additional fluid thermostatic valve
• External connections

Electrical components

• Premium Efficiency IE3 drive motor with three Pt100 winding temperature transducers for motor monitoring
• Control cabinet to IP 54
• Switching cabinet ventilation
• Automatic star-delta starter
• Overload relays
• Control transformer
• Frequency converter for fan motor
• SFC versions also with frequency converter for drive motor

SIGMA CONTROL 2

• "Traffic-light" LED indicators show operational status at a glance
• Plain text display
• 30 selectable languages
• Soft-touch keys with icons
• Fully automated monitoring and control
• Selection of Dual, Quadro, Vario and Continuous control as standard
• Interfaces: Ethernet
• Additional optional communications modules for: Profibus DP, Modbus, Profinet and DeviceNet
• SD-card slot for data-logging and updates
• RFID reader
• Web server