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Hitachi

Hitachi Industrial Equipment Systems Co., Ltd.

Package Oil-free Reciprocating

V-type (Variable Speed Control)

Energy-saving! 15% *1
Power-saving (Constant-pressure control with Inverter)
Constant-pressure control system can keep discharge pressure in the range of +/- 0.03MPa of setting pressure and can control motor rotating speed in proportional to air consumption.
This system allows lower pressure setting than conventional control system, such as pressure switch or unload valve control system, and saves electric cost. Pressure setting can be done with switches on the compressor panel at every 0.01MPa in the range of between 0.60 and 0.88 MPa of 5.5kW model and between 0.60 and 0.78 MPa of 7.5 & 15 kW models.

*1
Condition : constant-pressure control comparison with conventional model at air volume ratio of 70%

Power-saving

Environmentally-friendly with oil free structure

  • Oilfree air supply
  • No oil exchange program
  • Oilfree drain
  • No oil contamination

Digital indication

time counter

Easy-to-see time counter provided as standard

  • The compressor is provided with a time counter(standard feature)for digital display of not only air pressure but also operating time.
  • The digital display panel and the MAINTENANCE lamp positively indicate the time when to overhaul the compressor.

Simple operation by coordinated control of compressor and air dryer.(types with built-in air dryer)

Pre-operation of the air dryer or simultaneous operation of the air dryer and compressor can easily be selected by a single switch.

Simple operation by coordinated control of compressor and air dryer.(types with built-in air dryer)

Fixed speed Type

M type

New [ECOMODE] Control, Further Energy-Saving

Optimized cut-out pressure is automatically controlled by monitoring the condition of air delivery. Energy-saving can be obtained by cutting the unnecessary compression.

New [ECOMODE] Control, Further Energy-Saving

Energy-Saving

Compared with the conventional model under PUSC control, Energy-Saving of 40% when
air consumption rate is 30%, or 24% when air consumption rate is 50%, or 14% when
air consumption rate is 70% is possible.

(in case of PB-3.7kW with 95L air receiver tank installed)

Calculation condition:
▪ 3,000h/year operation
▪ Pressure setting at 0.78 - 0.93 MPa
▪ Extra air receiver tank installed

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