Screw Compressors HSKB - HSKB8561-70

Bitzer Screw Compressors HSKB - HSKB8561-70

Screw Compressors HSKB - HSKB8561-70

HSK = Application for air-conditioning and medium temperature cooling

BITZER’s semi-hermetic HS screw compressors feature a built-in suction gas-cooled motor integrated into the refrigerant circuit. For many years, they’ve proven to be a robust and efficient market solution – on their own and in parallel operation with several compressors and a shared oil separator. Because they’re compatible with a variety of refrigerants and boast a wide range of capacities and applications, these compressors are the first choice for large-scale commercial and industrial applications. They’re used when larger refrigerating capacities are required, for instance in blast freezers for the food industry as well as in refrigerator and freezer distribution warehouses. HS compressors are also suitable for many other refrigeration and heat pump applications.

HSKB compressors are primarily used at the low-temperature stage of booster refrigeration systems. Thanks to their unique design, they enjoy a great deal of trust among large-scale commercial and industrial users. In conjunction with HSK compressors for the high-temperature stage, a single refrigeration system can accommodate low and medium temperature applications for a simple, compact and cost-efficient solution.

Displacement Weight Max. pressure (LP/HP) Connection suction line Connection discharge line Oil type R22 Oil type R134a/R404A/R507A/R407A/R407F Oil type R448A/R449A
2900 RPM 50Hz 3500 RPM 60Hz
SI 359 m³/h 433 m³/h 580kg 19 / 28 bar DN 100 76 mm - 3 1/8'' B150SH, B100 (Option) BSE170 (Option) BSE170 (Option)
IP 12686 CFM 15300 CFM 1279lb 275 / 400 psi ODS 4 1/8'' 76 mm - 3 1/8'' B150SH, B100 (Option) BSE170 (Option) BSE170 (Option)

Extent of delivery (Standard)

Type Discharge gas temperature sensor Start unloading Oil flow control Motor protection Capacity control Enclosure class
SI Standard Standard SE-B2 (Standard) SE-E1 + SE-B2 (Standard), SE-E3 (Standard for 660-690V) 100-75-50% or 100-50% (Standard) IP54
IP Standard Standard SE-B2 (Standard) SE-E1 + SE-B2 (Standard), SE-E3 (Standard for 660-690V) 100-75-50% or 100-50% (Standard) IP54

Available Options

Type Suction shut-off valve Discharge shut-off valve Motor protection
SI Option Option SE-i1 (200-690V)
IP Option Option SE-i1 (200-690V)

Motor data

Type Motor voltage (more on request) Max operating current Starting current (Rotor locked)
SI 380-415V PW-3-50Hz 144.0 A 394.0 A D / 606.0 A DD
IP 440-480V PW-3-60Hz 144.0 A 394.0 A D / 606.0 A DD