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ALWAYS AIR.  ALWAYS THERE.
SULLAIR AIR COMPRESSORS

Sullair_Horizontal_Hitachi_Lockup_white.

AUTHORISED DISTRIBUTOR

DSP SERIES OIL FREE ROTARY SCREW AIR COMPRESSOR

Certified Class 0 Oil Free Air.  Optimized for Energy Efficiency.  The DSP Series brings advanced oil free operations right where it is needed: your facility!

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PRODUCT DESCRIPTION

 

Built on Hitachi engineering, the DSP is designed to supply oil free air reliably and efficiently— today and tomorrow.

  • Innovative Air End Construction 

  • Oil Mist Remover 

  • Motorized Isolation Valve 

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FLOW 

117-1303 cfm 

3.3 - 36.9 m3/min

PRESSURE

125 psi

3.3 - 36.9 m3/min

POWER

30 - 300 hp

22 -240 kW

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

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

*Restrictions apply*

Features and Benefits
Options

FIXED SPEED MODEL OPTIONS

 

  • NEMA 4

    • For electrical panel and controller

  • Weather Hood + NEMA 4

    • Includes rain protection cover and intake louvers protection

  • Cold Weather Package

    • Includes oil sump heater, control box heater and thermostat, heat trace control and condensate lines

    • Available only with air cooled models

  • AWA Container — all weather enclosure

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