Product Description

Frascold Q Series Semi-Hermetic Reciprocating Compressors

The Frascold Q Series is a range of compact four-cylinder semi-hermetic reciprocating compressors designed for commercial and industrial refrigeration applications.

The available models cover nominal displacements from 19.8 to 35.9 m³/h at 50 Hz and motor ratings from 4 to 7.5 HP. Different motor versions are available for low-, medium- and high-temperature refrigeration applications.

The Q Series is suitable for cold rooms, refrigerated display systems, food storage, beverage cooling, ice machines, process cooling and other refrigeration systems requiring dependable capacity and flexible operation.

Approved refrigerants, operating envelopes and cooling capacities vary by model and operating condition. Final compressor selection must be confirmed according to refrigerant, evaporating temperature, condensing temperature, required cooling capacity and power supply.

Key Features

• Four-cylinder semi-hermetic reciprocating design

• Compact cast-iron compressor body

• Nominal displacement from 19.8 to 35.9 m³/h at 50 Hz

• Motor ratings from 3.0 to 5.5 kW

• Suitable for approved HFC, HFO and HCFC refrigerants

• Compatible with variable-frequency operation within the approved operating envelope

• Optional CC head capacity control: 100% and 50%

• Optional RSH head capacity control: 100%, 75% and 50%

• IP56 electrical terminal box

• AMS motor protection

• INT69 Diagnose protection and diagnostic device

• Two oil-level sight glasses

• POE32 oil charge

• Maximum allowable pressure: 30 bar HP and 20.5 bar LP

• Alternative voltages and accessories available on request

Available Models

Motor Version Reference

• Motor Version 1: Medium- and high-temperature applications with approved refrigerants

• Motor Version 2: Low- and medium-temperature applications with approved refrigerants

• Motor Version 3: ECOinside low-temperature configuration; the Q5-36.1Y data sheet specifies R134a and R1234ze

Dimensions and Connections

General Technical Specifications

Typical Applications

• Walk-in cold rooms

• Freezer rooms

• Supermarket refrigeration

• Refrigerated display cabinets

• Food processing and storage

• Beverage cooling systems

• Ice-making equipment

• Commercial refrigeration systems

• Process cooling equipment

• Refrigeration condensing units

Selection Notice

Cooling capacity is not determined by compressor horsepower or displacement alone. Before ordering, please provide:

• Required refrigerant

• Required cooling capacity

• Evaporating temperature

• Condensing temperature or ambient temperature

• Local voltage, phase and frequency

• Low-, medium- or high-temperature application

• Required capacity-control configuration

The compressor must be selected within the applicable Frascold operating envelope. Please contact us for model confirmation and performance data before placing an order.