Product Description

The Frascold W Series is a range of eight-cylinder semi-hermetic reciprocating compressors designed for high-capacity commercial and industrial refrigeration systems.

The available models cover nominal motor ratings from 40 HP to 80 HP and volumetric displacements from 141.5 to 239.0 m³/h at 50 Hz. Multiple motor sizes are available for selected displacement versions, allowing the compressor to be matched more accurately to the required refrigerant, operating temperature and system load.

The W Series features positive-displacement oil-pump lubrication, electronic compressor protection and compatibility with stepped capacity regulation, Frascold RSH capacity-control heads and variable-frequency operation.

Key Features

• Eight-cylinder semi-hermetic reciprocating design

• Displacement range: 141.5–239.0 m³/h at 50 Hz

• Nominal motor range: 29.83–59.66 kW

• Motor ratings from 40 HP to 80 HP

• Positive-displacement oil-pump lubrication

• Frascold POE68 lubricant

• Two oil-level sight glasses

• Minimum reference frequency: 30 Hz

• Maximum reference frequency: 70 Hz

• Part-winding-start motor configuration

• Optional CC or RSH capacity-control heads

• RSH capacity regulation up to 100–87.5–75–62.5–50%

• Inverter-compatible within the approved operating envelope

• Electronic motor protection and diagnostics

• Electronic oil differential-pressure protection

• Discharge-temperature monitoring

• Suction and discharge shut-off valves

• Suitable for large condensing units and compressor racks

Available Models and Electrical Data

Values below refer to typical 400 V, 3-phase, 50 Hz, PWS executions.

Dimensions, Connections and Weight

Dimensions are shown as length × width × height.

General Technical Specifications

Capacity-Control Options

Depending on the configuration, the W Series supports:

• Full-capacity operation

• Frascold CC capacity-control heads

• CC capacity steps: 100–75–50%

• Frascold RSH capacity-control heads

• RSH capacity steps: 100–87.5–75–62.5–50%

• Variable-frequency operation

• Unloaded-start heads where required

Capacity-control components must be specified when ordering and are not automatically included in every compressor configuration.

Refrigerant Compatibility

Common refrigerants approved for applicable W Series configurations include:

• R22

• R134a

• R404A

• R407A

• R407C on selected configurations

• R407F

• R448A

• R449A

• R450A

• R452A

• R507

• R513A

Refrigerant approval and the permitted operating envelope depend on the exact model, motor version, lubricant, evaporating temperature and condensing temperature.

Typical Applications

• Industrial cold-storage systems

• Large walk-in freezers

• Food-processing refrigeration

• Frozen-food distribution centres

• Supermarket refrigeration

• Beverage-processing systems

• Ice-making equipment

• Industrial condensing units

• Multi-compressor racks

• Process cooling

• Large commercial refrigeration systems

Typical Standard Equipment

Depending on the exact order configuration, equipment may include:

• Suction and discharge shut-off valves

• Two oil-level sight glasses

• Electronic motor-protection and diagnostic module

• PTC motor-temperature sensors

• Discharge-temperature sensor

• Electronic oil differential-pressure switch

• Rubber vibration absorbers

• Nitrogen holding charge

• DOL connection bars

• Crankcase-heater connection

• Liquid-injection connection

Optional Accessories

• Crankcase heater

• CC capacity-control heads

• RSH capacity-control heads

• Unloaded-start heads

• Electronic oil-level switch

• Special motor voltage

• Liquid-injection equipment

• Additional monitoring and protection accessories

• Special coating for demanding environments

Selection Notice

Cooling capacity cannot be determined from horsepower or displacement alone.

Before ordering, please provide:

• Required refrigerant

• Evaporating temperature

• Condensing temperature

• Required cooling capacity

• Power supply and frequency

• Application type

• Required capacity-control method

• Starting method

• Ambient and installation conditions

The final model and operating envelope should be verified using Frascold selection data.