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Summary of Contents for Autool LM150
- Page 1 AUTOOL LM150 Digital Manifold Pressure Tester User Manual 用户手册 www.autooltech.com...
- Page 2 企业标准 / Corporate standard: Q/OR 005-2023...
- Page 3 COPYRIGHT INFORMATION Copyright ● All rights reserved by AUTOOL TECH. CO., LTD. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of AUTOOL.
- Page 4 CAUTIONS Warning This manual includes the use of instrument instructions and warnings for safe operation and maintenance. Failure to use the meter in accordance with the manual may damage the instrument. The pressure measured by the digital manifold pressure tester is gauge pressure.
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Page 5: Table Of Contents
TABLE OF CONTENTS Product Introduction ..................2 Overview ......................2 International electrical symbols ............... 2 Product specifications ..................3 Product Structure ....................5 Structure diagram.................... 5 Function Instructions..................6 Refrigerant filling and pressure inspection ............6 Vacuum operation ................... 8 Pressure leak test ................... -
Page 6: Product Introduction
PRODUCT INTRODUCTION Overview ● Intelligent electronic refrigerant group instrument is an auxilia- ry instrument for the installation, testing and maintenance of refrigeration equipment such as air conditioners and cold storage. The instrument has double pressure test, dual tempera- ture test, digital readout, multiunit switching, multi-mode function and built-in refrigerant database. -
Page 7: Product Specifications
Product Pressure Test Gauge Pressure specifications Pressure Test Unit Kpa; Mpa; bar; inHg; PSI; Pressure Test Range 0Kpa~6000Kpa Pressure Test Resolution 1Kpa Pressure Test Accuracy ±0.5%(FS) +5dgt Pressure Overload Limit 10000Kpa(10Mpa; 100bar) Relative Vacuum Vacuum Test Kpa; Mpa; bar; inHg; PSI; Vacuum Test Unit -101Kpa~0Kpa Vacuum Test Range... - Page 8 R405A R406A R407A R407B R407C R407D R407E R408A R409A R409B R410A R410B R411A R411B R412A R413A R414A R414B R415A R415B R416A R417A R418A R419A R420A R421A R421B R422A R422B R422C R422D R423A R424A R425A R426A R427A R428A R438A R448A R449A R452A R500 R501...
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Page 9: Product Structure
PRODUCT STRUCTURE Structure diagram T1 Sensor T2 Sensor °C °C °C °C Clamp-on temperature probe socket LCD display Unit button: pressure unit switch button Mode button: test function mode switch button Run / Stop button: test control button in leak test mode Backlit button °C/°F button: temperature unit switch button Zero button: pressure display zero button... -
Page 10: Function Instructions
FUNCTION INSTRUCTIONS Refrigerant ● Turn off the blue valve and red valve. filling and ● Power on the instrument. Then make sure if the LCD displays pressure pressure test status as below picture. If not, press the Mode inspection button to switch it. T1 Sensor T2 Sensor °C... - Page 11 ● Turn on the refrigerant valve and gently press the pressure release valve to vent the air in the connecting hose. ● When the refrigeration system stops, turn on the high pressure valve (red valve) and fill with a certain amount of refrigerant and then shut the valve quickly.
- Page 12 T1 Sensor T2 Sensor °C °C °C °C ● The instrument can calculate the SH - Superheat and SC - Subcooling as shown below as long as the tested refrigerant is preset and clamp-on temperature probes are connected well °C/°F conversion by pressing MODE button. T1 Sensor T2 Sensor °C...
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Page 13: Pressure Leak Test
T1 Sensor T2 Sensor °C °C °C °C ● Turn on the blue valve and red valve, and start the vacuum pump. ● After the vacuum operation is completed, turn off the blue valve and red valve, then shut the vacuum pump. At this time, pressure leak test mode can be used to check leakage in the system (Please refer to Pressure Leak Test). - Page 14 hh:mm ● At this time, the lower left corner records the initial pressure value; the lower right corner shows the instantaneous pressure value; the “ΔP” display area shows the difference between initial pressure value and instantaneous pressure value. ● The time display area shows how long the leak test lasts in the format of Hour:Minute (HH:MM).
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Page 15: Common Problems
COMMON PROBLEMS Low battery ● The instruments has low power sign. When it is displayed , it power supply means the battery power is insufficient. At this time, the battery should be replaced as required in order to avoid affecting normal use. -
Page 16: Glossary
GLOSSARY Saturation ● The state of saturation is the coexistence of a refrigerant in a liquid and gas state. Condensation ● Condensation temperature: temperature In the condenser, the refrigerant is condensed by the and evapora- high-temperature gaseous refrigerant to the temperature of the tion tempera- liquid refrigerant, that is, the saturation temperature under the ture... -
Page 17: Gauge Pressure And Absolute Pressure
Gauge ● Gauge pressure: pressure and Gauge pressure refers to the pipeline pressure, refers to the absolute pressure measured by pressure gauges, vacuum gauges, pressure U-shaped tubes, etc., also known as relative pressure. The “table pressure” starts with atmospheric pressure and the symbol is Pg. -
Page 18: Relative Humidity And Absolute Humidity
Relative ● Absolute humidity: humidity and The mass of water vapor in a unit volume of air is called the absolute “absolute humidity” of air. It is a representation of the physical humidity quantity of atmospheric dryness and humidity. It is usually expressed in grams of water vapor contained in 1 cubic meter of air. -
Page 19: Maintenance Service
MAINTENANCE SERVICE Our products are made of long-lasting and durable materials, and we insist on perfect production process. Each product leaves the factory after 35 procedures and 12 times of testing and inspec- tion work, which ensures that each product has excellent quality and performance. -
Page 20: Warranty
Disclaimer All information, illustrations, and specifications contained in this manual, AUTOOL resumes the right of modify this manual and the machine itself with no prior notice. The physical appearance and color may differ from what is shown in the manual, please refer to the actual product. -
Page 21: Return & Exchange Service
RETURN & EXCHANGE SERVICE ● If you are an AUTOOL user and are not satisfied with the Return & AUTOOL products purchased from the online authorized Exchange shopping platform and offline authorized dealers, you can return the products within seven days from the date of receipt;...
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