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Frascold R-TSH8 40 120 Y User Manual

Frascold R-TSH8 40 120 Y
52 pages
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R-TSH R-TSL
COMPRESSORI A DOPPIA VITE
TWIN SCREW COMPRESSORS
Istruzioni per la installazione
e l’avviamento
Installation and start-up
instruction
2002 04-00

Table of Contents

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Frascold R-TSH8 40 120 Y Specifications

General IconGeneral
Oil pump typeGear pump
Frequency50 Hz
TypeSemi-hermetic
RefrigerantR404A, R507, R134a
Motor voltage400V
Voltage400 V

Summary

Safety Precautions

General Description of Twin Screw Compressors

Standard Equipment Included

Details the standard components supplied with each compressor unit.

Compressor Name Plate Information

Explains the data presented on the compressor's identification name plate.

Compressor Protection Systems

Terminal Box and Electrical Connections

Lubrication System Overview

Lubricant Specifications and Handling

Capacity Control Device Operation

Vibration Absorber Installation

Holding Charge Procedures

Maximum Stop/Start Per Hour Limits

Compressor Operating Cycles and Limits

Application Limits and Unloading Start

Preliminary Checks Before Installation

Receipt Checks and Verification

Procedures for inspecting the compressor upon receipt for damage or missing parts.

Compressor Lifting Procedures

Guidelines for safely lifting and moving the compressor using its designated lifting points.

Compressor Installation Procedures

Compressor Fixing to Frame

Instructions for securely mounting the compressor to a horizontal base, including torque specifications.

Refrigerating Connections and Brazing

Guidance on brazing refrigerant lines, emphasizing impurity prevention.

Electrical Connections and Safety

Selecting Contactors, Fuses, and Cables

Terminal Box Wiring and Cable Management

Electrical Component Selection Guidelines

External Lubrication Circuit

Oil Separator Requirements and Selection

Details the essential role and specifications of the oil separator in the lubrication circuit.

Oil Separator Installation and Configuration

Oil Separator Heater Functionality

External Oil Return Piping

Oil Filter Installation and Configuration

Flow Switch Installation and Specifications

Solenoid Valve Installation

Installation Advices for Low Temperatures

Compressor Starting Methods

Part Winding Start (PWS) Configuration

Details on setting up the Part Winding Start method for the compressor motor.

Direct On Line (DOL) Start Configuration

Instructions for configuring the compressor for Direct On Line starting.

Vacuum and Refrigerant Charging Procedures

Lubricant Charging Process

Steps for adding lubricant to the oil separator, ensuring correct level and type.

Refrigerating Circuit Evacuation

Procedure for removing air, moisture, and non-condensables from the refrigeration circuit.

Vacuum Evacuation and Lubricant Fill

Vacuum Leak Testing Procedure

Refrigerant Charging and Safety

Refrigerant Leak Detection Methods

Compressor Start-up and Final Checks

Feed Voltage Measurement

Measuring the supply voltage to ensure it is within acceptable operational limits.

Phase Tension Balance Control

Checking for voltage balance between the power phases for motor protection.

Voltage Balance Checks for PWS and DOL

Full Load Current Measurement

Final Checks Post-Start-up

Various Accessories for Refrigeration Systems

Liquid Separator Functionality

Explains the role of the liquid separator in preventing compressor damage from liquid refrigerant.

Temperature Actuator Operation

Details the function and importance of the temperature actuator for compressor life.

High Pressure Switch Installation and Function

Describes the high-pressure switch for system protection and its correct application.

High Pressure Switch Connection and Selection

Low Pressure Switch Functionality and Connection

Pressure Gauges and Their Use

Filter Dryer Selection and Compatibility

Filter Dryer Installation Considerations

Refrigerant Line Design Principles

Periodic Checks and Maintenance Schedule

Lubricant Replacement Procedures

Solenoid Valve Tightness Check

Oil Flow Switch Operation Check

Compressor Gasket Tightness Checks

Discharge Check Valve Tightness

Thermistors Continuity Check

Special Operating Conditions

Lubricant Oil Cooling Systems

Details on systems required for cooling lubricant under severe operating conditions.

Air Cooled Oil Cooler Installation

Instructions for installing air-cooled oil coolers and their temperature control.

Water Cooled Oil Cooler Installation

Liquid Injection for Oil Cooling

Economizer System for Efficiency Improvement

Economizer Kit Components and Selection

Parallel Compressor System Design

Discharge Pressure Regulation for Oil Return

Various Advices for Special Conditions

Specific Advices for Cold Environments and Pump-Down

Technical Data Tables and Diagrams

Technical Data for Compressor Models

Lubricant Specifications and Types

Tightening Torque Specifications

Vibration Absorber Specifications

Base Mounting and Fixing Dimensions

Dimensional Drawings for Compressor Models

Dimensional Drawings and Component Legends

Dimensional Drawings for Larger Compressor Models

Dimensional Drawings Component Identification

Accessory Kits for Compressors

Oil Separator Specifications and Connections

Water Cooled Oil Cooler Specifications

Air Cooled Oil Cooler Specifications

Oil Filter Specifications

Flow Switch Specifications

Solenoid Valve Specifications

Oil Sight Glass Specifications

Economizer Kit Configurations

Plate Heat Exchanger Specifications

Solenoid Valve Specifications for Economizers

Thermostatic Expansion Valve Specifications

Sight Glass Specifications

Intermediate Saturation Temperature Charts

Thermistor Characteristics

Electronic Module Data

Motor Windings Resistance Data

Electrical Wiring Diagrams

Legend for Wiring Diagrams and Symbols

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