Z-screw Fast and Easy Thermal Control Facilitates the Disposal of Waste Heat The waste heat temperature is reduced to only one-seventh of that in a conventional oil-free air compressor. This promises the ready disposal of waste heat at sufficiently low temperatures. The water-lubricated ZU air compressor runs at about 45°C without the use of oil.
Twin screw (double-stage compression) Equipped with an over-drive gear. Requires a cooling lubricant. Oil mist remover required. With the conventional dry type (oil free), the temperature climbs to as high as about 300°C.

ZU Series: ZU085A3 ZU115A3 ZU905WS ZU1005WS ZU1205WS

ZU Series: ZU085A3
Model		ZU085A3
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		0.9
Delivered air pressure (MPa)		0.69
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		7.5
Motor type		Three-phase-squirrel-cage, 4P totally-enclosed-fan
Starter		Direct starting
Drive system		V belt
Cooling system		Air cooled
Fan motor power (kW)		0.08
Lubrication water amount ()		20
Dryer	Air dew point at outlet ( °C)	—
	Refrigerant	—
Discharge pipe diameter (R)		3/4
Dimension, L x W x H (body) (mm)		*Please refer
Total mass (dry state) [without dryer] (kg)		[ 415 ]
Noise level [OP1.5m] (dB.A)		55
Dimension, L x W x H (without dryer) (mm)		850 x 750 x 1450

ZU Series: ZU115A3
Model		ZU115A3
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		1.4
Delivered air pressure (MPa)		0.69
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		11
Motor type		Three-phase-squirrel-cage, 4P totally-enclosed-fan
Starter		Direct starting
Drive system		V belt
Cooling system		Air cooled
Fan motor power (kW)		0.15
Lubrication water amount ()		20
Dryer	Air dew point at outlet ( °C)	—
	Refrigerant	—
Discharge pipe diameter (R)		3/4
Dimension, L x W x H (body) (mm)		*Please refer
Total mass (dry state) [without dryer] (kg)		[ 440 ]
Noise level [OP1.5m] (dB.A)		58
Dimension, L x W x H (without dryer) (mm)		850 x 750 x 1450

ZU Series: ZU155AS
Model		ZU155AS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		2.3/1.8
Delivered air pressure (MPa)		0.69(7)/0.93(9.5)
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		15
Motor type		Three-phase-squirrel-cage, 2P totally-enclosed-fan
Starter		Direct starting
Drive system		Direct coupled motor
Cooling system		Air cooled
Fan motor power (kW)		1.6
Lubrication water amount ()		26
Dryer	Air dew point at outlet ( °C)	10 under pressure
	Refrigerant	0.9
Discharge pipe diameter (R)		1
Dimension, L x W x H (body) (mm)		1710 x 750 x 1410
Total mass (dry state) (kg)		600
Noise level [OP1.5m] (dB.A)		59
Dimension, L x W x H (without dryer) (mm)		1370 x 750 x 1410

ZU Series: ZU225AS
Model		ZU225AS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		3.5/2.7
Delivered air pressure (MPa)		0.69(7)/0.93(9.5)
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		22
Motor type		Three-phase-squirrel-cage, 2P totally-enclosed-fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Air cooled
Fan motor power (kW)		2.2
Lubrication water amount ()		27
Dryer	Air dew point at outlet ( °C)	10 under pressure
	Refrigerant	1.3
Discharge pipe diameter (R)		1
Dimension, L x W x H (body) (mm)		1710 x 750 x 1410
Total mass (dry state) (kg)		690
Noise level [OP1.5m] (dB.A)		61
Dimension, L x W x H (without dryer) (mm)		1370 x 750 x 1410

ZU Series: ZU375AS
Model		ZU375AS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		6.0/4.8
Delivered air pressure (MPa)		0.69(7)/0.93(9.5)
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		37
Motor type		Three-phase-squirrel-cage, 2P totally-enclosed-fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Air cooled
Fan motor power (kW)		3.0
Lubrication water amount ()		40
Dryer	Air dew point at outlet ( °C)	10 under pressure
	Refrigerant	1.3
Discharge pipe diameter (R)		1·1/2
Dimension, L x W x H (body) (mm)		2195 x 750 x 1440
Total mass (dry state) (kg)		1090
Noise level [OP1.5m] (dB.A)		67
Dimension, L x W x H (without dryer) (mm)		1795 x 750 x 1440

ZU Series: ZU375WS-R
Model		ZU375WS-R
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		6.0/4.8
Delivered air pressure (MPa)		0.69(7)/0.93(9.5)
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		—
Main motor power (kW)		37
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		50
Lubrication water amount ()		40
Cooling water amount (/min)		90.0
Dryer	Air dew point at outlet ( °C)	10 (under pressure)
	Refrigerant	—
Discharge pipe diameter (R)		1·1/2
Dimension, L x W x H (body) (mm)		2195 x 750 x 1440
Total mass (dry state) [without dryer] (kg)		1090
Noise level [OP1.5m] (dB.A)		67
Dimension, L x W x H (without dryer) (mm)		1795 x 750 x 1440

ZU Series: ZU555AS-R
Model		ZU555AS-R
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		9.5
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		55
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Air cooled
Fan motor power (kW)		7.5
Lubrication water amount ()		130
Dryer	Air dew point at outlet ( °C)	10 (under pressure)
	Refrigerant	1.3
Discharge pipe diameter (R)		2
Dimension, L x W x H (body) (mm)		2287 x 1200 x 1500 *
Total mass (dry state) [without dryer] (kg)		1875
Noise level [OP1.5m] (dB.A)		73
Dimension, L x W x H (without dryer) (mm)		1800 x 1200 x 1500 *

* In case of 55/75kW air cooled type, an indoor cooler unit (1680 x 1260 x 1500) (weight 720kg) must be installed separately.

ZU Series: ZU555WS-R
Model		ZU555WS-R
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		9.5
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		—
Main motor power (kW)		55
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		80
Lubrication water amount ()		100
Cooling water amount (/min)		150
Dryer	Air dew point at outlet ( °C)	10 (under pressure)
	Refrigerant	1.3
Discharge pipe diameter (R)		2
Dimension, L x W x H (body) (mm)		2287 x 1200 x 1500
Total mass (dry state) [without dryer] (kg)		1575
Noise level [OP1.5m] (dB.A)		65
Dimension, L x W x H (without dryer) (mm)		1800 x 1200 x 1500

ZU Series: ZU755AS-R
Model		ZU755AS-R
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		13.0
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Main motor power (kW)		75
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Air cooled
Fan motor power (kW)		7.5
Lubrication water amount ()		130
Dryer	Air dew point at outlet ( °C)	10 (under pressure)
	Refrigerant	2.2
Discharge pipe diameter (R)		2
Dimension, L x W x H (body) (mm)		2287 x 1200 x 1500 *
Total mass (dry state) [without dryer] (kg)		2060
Noise level [OP1.5m] (dB.A)		73
Dimension, L x W x H (without dryer) (mm)		1800 x 1200 x 1500 *

* In case of 55/75kW air cooled type, an indoor cooler unit (1680 x 1260 x 1500) (weight 720kg) must be installed separately.

ZU Series: ZU755WS-R
Model		ZU755WS-R
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		13.0
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		—
Main motor power (kW)		75
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		80
Lubrication water amount ()		100
Cooling water amount (/min)		200
Dryer	Air dew point at outlet ( °C)	10 (under pressure)
	Refrigerant	2.2
Discharge pipe diameter (R)		2
Dimension, L x W x H (body) (mm)		2287 x 1200 x 1500
Total mass (dry state) [without dryer] (kg)		1760
Noise level [OP1.5m] (dB.A)		67
Dimension, L x W x H (without dryer) (mm)		1800 x 1200 x 1500

ZU Series: ZU905WS
Model		ZU905WS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		16.0
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		Less than cooling water intake temp., + 15°C
Main motor power (kW)		90
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		150
Lubrication water amount ()		95
Cooling water amount (/min)		250
Dryer	Air dew point at outlet ( °C)	—
	Refrigerant	—
Discharge pipe diameter (R)		3flange
Dimension, L x W x H (body) (mm)		—
Total mass (dry state) [without dryer] (kg)		[ 2095 ]
Noise level [OP1.5m] (dB.A)		67
Dimension, L x W x H (without dryer) (mm)		2500 x 1200 x 1800

ZU Series: ZU1005WS
Model		ZU1005WS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		18.2
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		Less than cooling water intake temp., + 15°C
Main motor power (kW)		100
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		150
Lubrication water amount ()		95
Cooling water amount (/min)		250
Dryer	Air dew point at outlet ( °C)	—
	Refrigerant	—
Discharge pipe diameter (R)		3flange
Dimension, L x W x H (body) (mm)		—
Total mass (dry state) [without dryer] (kg)		[ 2145 ]
Noise level [OP1.5m] (dB.A)		68
Dimension, L x W x H (without dryer) (mm)		2500 x 1200 x 1800

ZU Series: ZU1205WS
Model		ZU1205WS
Power frequency (Hz)		50
Power supply voltage (V)		415
Free air delivery (m3/min)		21.3
Delivered air pressure (MPa)		0.7
Pressure control method		Saving energy A.U.C.S & auto. Start & stop selection
Intake air pressure & temperature		Atmospheric pressure (2-40 °C)
Discharge air temp. (without dryer) ( °C)		Less than cooling water intake temp., + 15°C
Main motor power (kW)		120
Motor type		3-phase squirrel cage 2P totally enclosed external fan
Starter		Automatic star-delta
Drive system		Direct coupled motor
Cooling system		Water cooled
Fan motor power (kW)		150
Lubrication water amount ()		95
Cooling water amount (/min)		300
Dryer	Air dew point at outlet ( °C)	—
	Refrigerant	—
Discharge pipe diameter (R)		3flange
Dimension, L x W x H (body) (mm)		—
Total mass (dry state) [without dryer] (kg)		[ 2195 ]
Noise level [OP1.5m] (dB.A)		70
Dimension, L x W x H (without dryer) (mm)		2500 x 1200 x 1800