FEATURES & BENEFITS

 

Innovative Air End Construction

Key features: 

• Rotor design, material and coating optimized for efficiency

  • Stainless steel rotors in 1st and 2nd stage

  • Patented PTFE-free rotor coating

  • Rotor housing coated internally

Benefits:

• All aspects of the air end have been carefully engineered to provide long life and high efficiency

  • The stainless steel rotors, patented rotor coating and coated housing provide long life of air end

 

Patented High Pre-Cooler Design (Air Cooled Units)

Key features: 

• Stainless steel high pre-cooler placed before aftercooler

Benefits: 

• Helps prevent thermal fatigue and premature failure of the aftercooler, providing higher reliability and durability

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Motorized Isolation Valve (MIV) 

Key features: 

• Located at the compressed air discharge, the MIV helps avoid migration of moisture back into the compressor package when the DSP is not running

  • Opens when the motor is running and closes when the motor is off

Benefits: 

• Provides additional protection for the compressor against downstream humidity – one of the biggest enemies of oil free screw compressors

 

Oil Mist Remover (OMR) 

Key features: 

• Removes oil mist from gearcase with 99.99% efficiency

• Maintains gearcase at negative pressure

Benefits: 

• Recaptured oil mist is returned, reducing gearcase top offs needed — saving you money

• Helps ensure a cleaner production environment around the compressor

 

Capacity Control System

Fixed Speed
Key features: 

• Spool type — simple design

• Pneumatically controlled

• Designed to operate 1 million cycles/year

Benefits: 

• High reliability and durability

• Lower maintenance cost

• Longer maintenance intervals

 

Variable Speed Drive (VSD) 
Key features: 

• No inlet valve on VSD

• Two speed reduction

• Turndown works always in the most efficient range of specific power. Below turndown DSP works load/unload at minimum point of turndown

Benefits: 

• No restriction means no air losses at inlet

• Minimize power consumption at unload condition

• Power consumption at no load is reduced up to 30% vs fixed speed of same model

 

Hitachi Motors

Key features: 

• IE3, TEFC and IP44 (Fixed Speed 22-240 kW models and VSD 160-240 kW models)

• TEFC, DCBL-PPM and IE4 (DSP37V, DSP55V and DSP75V models)

Benefits: 

• Support provided in house — no external motor suppliers to navigate

• Motors are high efficiency and very compact

 

VSD Fan Motors 
Available on DSP22-75

Benefits: 

• More efficient cooling system

 

Hitachi Inverters

Benefits: 

• Support provided in house — no external inverter suppliers to navigate

 

Phase Monitor

Benefits: 

• Protects the compressor against improper reverse rotation at startup

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*Restrictions apply*

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