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Hanbell LT-S Series User Manual

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LT-S-(L) Technical manual
Contents
1. Overview .......................................................................................................................... 3
2. Product Specification ...................................................................................................... 4
2.1 Nomenclature ........................................................................................................... 4
2.2 Product Line ............................................................................................................ 4
2.3 Compressor specification table .............................................................................. 4
2.4 Operating range graph ........................................................................................... 6
3. Construction & Functions .............................................................................................. 8
3.1 Design Features ....................................................................................................... 8
3.2 Capacity modulation system .................................................................................. 8
3.2.1 Step type capacity modulation system ......................................................... 10
3.2.2 Stepless type capacity modulation system ................................................... 14
3.2.3 The Location of the Solenoid Valves ............................................................ 19
4. Lubricant ....................................................................................................................... 21
4.1 Lubricant Specification ........................................................................................ 21
4.2 The Replacement of Lubricant ............................................................................ 22
4.3.1 Oil Change Schedule ..................................................................................... 22
4.3.2 Pre-cautions for changing oil ........................................................................ 22
5. System Application ........................................................................................................ 24
5.1 Piping Design ......................................................................................................... 24
5.1.1 Suction and Discharge Piping Layout ......................................................... 24
5.1.2 Economizer Piping Layout ........................................................................... 26
5.1.3 Minimum pressure valve .............................................................................. 26
5.1.4 Liquid Line Filter Dryer ............................................................................... 27
5.1.5 Sight Glass with Moisture Indicator ............................................................ 27
5.2 Oil Line................................................................................................................... 28
5.2.1 Oil Supply ...................................................................................................... 28
5.2.2 Lubrication and Capacity Control Modulation .......................................... 28
5.2.3 Compressor chamber injection system ........................................................ 28
5.2.4 Protection in Oil Circuit ............................................................................... 29
1Oil temperature ....................................................................................................... 29
2Oil filter .................................................................................................................... 30
3Oil pressure differential .......................................................................................... 31
4Oil level protection .................................................................................................. 31
5.2.5 Oil cooling system .......................................................................................... 31
1Air cooling type ....................................................................................................... 33
2 Water cooling type ......................................................................................... 33
3 Refrigerant oil cooling .................................................................................. 34
5.3 Motor Liquid Injection Cooling ........................................................................... 34
5.4 Economizer System ............................................................................................... 35
5.4.1 Economizer System with Sub Cooler ........................................................... 35
5.4.2 Economizer System with Flash Type Subcooler ......................................... 36

Table of Contents

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Hanbell LT-S Series Specifications

General IconGeneral
BrandHanbell
ModelLT-S Series
CategoryAir Compressor
LanguageEnglish

Summary

Overview

Product Specification

Nomenclature

Defines part names and codes for LT series compressors.

Product Line

Lists the available LT series product lines and their specifications.

Compressor Specification Table

Details technical specs like displacement, capacity control, and noise levels.

Operating Range Graph

Construction & Functions

Design Features

Highlights key design aspects for efficiency and reliability.

Capacity Modulation System

Explains step and stepless systems for controlling compressor output.

Step Type Capacity Modulation

Details the logic and control for step-based capacity modulation.

Stepless Type Capacity Modulation

Explains the control logic for precise, continuous capacity adjustment.

Lubricant

Lubricant Specification

Lists recommended lubricants and their operating parameters for LT series.

Lubricant Replacement

Provides schedule and precautions for changing compressor oil and filters.

Oil Change Schedule

Defines intervals for checking and replacing compressor lubricant.

System Application

Piping Design

Covers material, structure, and layout for suction, discharge, and economizer piping.

Minimum Pressure Valve

Details the function and installation of the minimum pressure valve.

Liquid Line Filter Dryer

Emphasizes the importance of a filter drier for system moisture control.

Sight Glass with Moisture Indicator

Recommends using sight glasses for monitoring system moisture levels.

Oil Line

Protection in Oil Circuit

Outlines critical oil circuit protections like temperature, filter, and level.

Oil Cooling System

Explains air, water, and refrigerant cooling methods for compressor oil.

Economizer System

Economizer System with Sub Cooler

Describes an economizer system utilizing a subcooler for enhanced performance.

Economizer System with Flash Type Subcooler

Details an economizer system employing a flash type subcooler for efficiency.

Recommended System Layout

Electrical Design

Electrical Parameters and Design

Covers starting methods, power requirements, and motor current data.

Y-Δ Start

Explains the Y-Δ starting method to reduce current and motor stress.

Compressor Installation

Compressor Lifting

Provides guidelines for safely lifting and handling the compressor unit.

Compressor Installation Details

Addresses site requirements, ventilation, and anchor point selection for installation.

Operation and Maintenance

Compressor Commissioning Check

Lists pre-start and operational checks for compressor setup and monitoring.

Troubleshooting Table

Identifies common faults, possible causes, and solutions for compressor operation.

Dimensions

LT-S-20/10 Drawing

Provides detailed dimensional drawings and part identification for LT-S-20/10.

LT-S-30/12 Drawing

Shows dimension details and part labels for LT-S-30/12 compressors.

LT-S-65/32 & LT-S-83/41 Drawing

Presents dimensional drawings and part identification for LT-S-65/32 and LT-S-83/41.

Accessories

Accessory List

Lists standard and optional accessories available for LT series compressors.

Gas Refrigerant Line Accessories

Details specifications for shut-off valves, tubes, and check valves.

Check Valve Specification

Provides dimensions and technical data for economizer and discharge check valves.

Minimum Pressure Valve Specification

Specifies dimensions and technical data for minimum pressure valves.

Oil Line Accessories

Oil Flow Switch

Details specifications and functions of the oil flow switch.

Oil Pressure Differential Switch

Explains the function and installation of the oil pressure differential switch.

Electrical Accessories

INT69 HBY Diagnose Protection Module

Explains the function and features of the advanced compressor protection module.

300W Oil Heater

Details the purpose and operation of the standard 300W oil heater.

Other Accessories

Cushion

Details the use and specification of compressor mounting cushions.

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