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Instruções de Operação LG, Modelo RCAW070PBAA

Fabricante : LG
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Operation & Maintenance Manual CHILLER AIR-COOLED SCREW Please read this manual carefully before operating your set and retain it for future reference. TYPE : Chiller Air-cooled Screw R134a MODELS : RCAW - COMPACT P/NO : MFL63291701 Air cooled Screw Operation & Maintenance Manual TABLE OF CONTENTS SAFETY CONSIDERATIONS Warning ...................................................................................................................................3 Caution....................................................................................................................................7 GENERAL Manipulation of HMI Unit .......................................................................................................11 CONTROLS PLC and HMI Unit .................................................................................................................21 Machine on/off control ...........................................................................................................30 START-UP Pre Start-up ..........................................................................................................................31 Start-up Procedure................................................................................................................32 Operation Limits ....................................................................................................................34 OPERATION Sequence of Operation .........................................................................................................40 Sensors .................................................................................................................................45 SERVICE Cycle Components................................................................................................................46 Control System .....................................................................................................................59 Maintenance .........................................................................................................................70 TROUBLE SHOOTING............................................................................................................71 APPENDIX Wiring Diagram .....................................................................................................................79 Cycle Diagram ......................................................................................................................89 Check List .............................................................................................................................90 2 Chiller Air-cooled Screw Safety Considerations SAFETY CONSIDERATIONS Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical components, and equipment location (roof, elevated structures, etc). Only trained, qualified installers and service technicians should install, start up, and service this equipment. When working on this equipment, observe precautions in the literature, and on tags, stickers, and labels attached to the equipment, and any other safety precautions that apply. Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting this equipment, and in handling all electrical components. To prevent injury to the user or other people and property damage, the following instructions must be followed. ¦ Incorrect operation due to ignoring Instructions in the manual will cause harm or damage. The seriousness is classified by the following indications. ¦ We do not have any responsibility for any failure caused by careless management and natural disaster, and power cord failure regardless of warranty period. ¦ The content in the manual could be changed for the improvement of product without notice. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. ¦ Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. All wiring must comply with local requirements and the instructions given in this manual. • If the power source capacity is inadequate or electric work is performed improperly, electric shock or fire may result. Ask the dealer or an authorized technician to install the chiller. • Improper installation by the user may result in water leakage, electric shock, or fire. Operation & Maintenance Manual 3 Safety Considerations Always ground the product. • There is risk of fire or electric shock. For re-installation of the installed product, always contact a dealer or an Authorized Service Center. • There is risk of fire, electric shock, explosion, or injury. Do not store or use flammable gas or combustibles near the chiller. • There is risk of fire or failure of product. Do not install the product on a defective installation stand. • It may ...


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