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  4. Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type) (Kobelco Compressor Co., Ltd.)
Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)-IZF70W
Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)-Kobelco Compressor Co., Ltd.

Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)
Kobelco Compressor Co., Ltd.

About This Product

■Refrigerating capacity increased by 40% by increasing inverter speed

With conventional refrigerators, as the evaporation temperature drops, the refrigeration capacity also drops significantly. The "iZ series" focuses on the fact that when the evaporation temperature falls, extra power is created in the motor and capacitor, and by increasing the speed with an inverter, it maximizes its potential. In addition, the same performance can be achieved even in the 50Hz area, where the performance had to be reduced by 20% compared to the 60Hz area. Therefore, you may be able to select a model that is one or two classes lower than the previous model. In addition, by increasing capacity, units that were previously equipped with multiple compressors can now be converted into a single compressor (two compressors) or two compressors (three compressors), which will also lead to reduced maintenance costs.

■Outstanding energy saving performance due to inverter control

By controlling the rotational speed of the inverter, the refrigeration capacity is controlled steplessly and excessive cooling is prevented, resulting in outstanding energy-saving performance. In addition, unloading, which was conventionally performed by a piston valve, is now controlled by an inverter, resulting in optimal operation according to the load, resulting in significant energy savings. No need for stop intervals due to soft start mechanism

■Demonstrates excellent energy-saving performance depending on the load. No inrush current at startup, allowing soft startup.

The effects of installing an inverter are also visible at startup. Star-delta starting of a constant-speed machine places a very heavy burden on the motor, requiring an interval of about 10 minutes between restarts. The "iZ series" does not require this interval because it uses a soft start-up using an inverter. It is possible to restart immediately after stopping.

■Quick solutions with iZ monitor Equipped with advanced brain "iZ monitor"

Merely notifying you of an abnormal stop is not enough. KOBELCO thought so. The "iZ Series" constantly monitors the operating status of the refrigerator using sensors installed in each part. It detects machine abnormalities in advance and sends out warnings before abnormal stops or breakdowns occur, preventing sudden machine downtime. It also has a driving history memory function, which allows you to accurately understand the situation leading up to a problem, which helps in speedy resolution.

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    Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)

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1 Models of Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)

Image Part Number Price (excluding tax) Refrigerating machine oil filling amount (ℓ) Refrigerant Condenser Refrigerant side internal volume (ℓ) Condenser Receiver capacity (ℓ) Condenser type Frequency Number of compressors External dimensions Length x width x height (mm) Capacity control Installation conditions Legal frozen tons Evaporation temperature usage range (℃) Product mass (kg) Piping Cooling water inlet/outlet Piping Refrigerant gas inlet Piping Refrigerant liquid outlet Motor nominal output (kW) Electric motor type Electric motor starting method Power supply Noise level (dB (A) ) High pressure gas production notification category
Two-stage screw condensing unit using new refrigerant R448A iZF SERIES (water-cooled type)-Part Number-IZF70W

IZF70W

Available upon quote

14

R448A/GWP 1,390 (locally prepared item)

142

58

Water-cooled horizontal shell and tube (also used as liquid receiver)

50/60Hz

1 unit

1,675×1,200×1,420

Continuous control mode or step control mode (50%, 75%, 100% 3 steps)

Indoor

12.76

-30 ~ -65

1,260

Condenser: Rc3
Oil cooler: Rc1
Electric motor: Rc1

80A

31.75mm

37

Semi-hermetic 4-pole 3-phase induction type

Inverter

Motor, inverter: 200/220V, 3 phase
Operation circuit: 200/220V, single phase

80

No notification required

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