Carrier 50LC 07 Series Service And Maintenance Instructions

Also see for 50LC 07: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Installation instructions

Carrier 50LC 07 Series Service And Maintenance Instructions Manual pdf 1 page image

50LC*D07---D12Nominal 6 to 10 TonsWith Puron (R---410A) RefrigerantService and Maintenance InstructionsTABLE OF CONTENTSSAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . .UNIT ARRANGEMENT AND ACCESS 2. . . . . . . . . . .SUPPLY FAN (BLOWER) SECTION 3. . . . . . . . . . . . . .COOLING 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PURONR (R--410A) REFRIGERANT 7. . . . . . . . . . . . . .COOLING CHARGING CHARTS 9. . . . . . . . . . . . . . . . .CONVENIENCE OUTLETS 15. . . . . . . . . . . . . . . . . . . .SMOKE DETECTORS 16. . . . . . . . . . . . . . . . . . . . . . . . .PROTECTIVE DEVICES 23. . . . . . . . . . . . . . . . . . . . . . .ELECTRIC HEATERS 24. . . . . . . . . . . . . . . . . . . . . . . . .WIRING DIAGRAMS 27. . . . . . . . . . . . . . . . . . . . . . . . .HACR 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ISC BOARD 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ECONOMI$ER X (FACTORY--INSTALLED) 39. . . . . .ECONOMIZER CONTROL CONFIGURATIONS 46. . .VARIABLE FREQUENCY DRIVE (VFD) 60. . . . . . . . .PRE--START-UP 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .START-UP, GENERAL 82. . . . . . . . . . . . . . . . . . . . . . . . .FASTENER TORQUE VALUES 83. . . . . . . . . . . . . . . . .MODEL NUMBER SIGNIFICANCE 84. . . . . . . . . . . . .SEQUENCE OF OPERATION 85. . . . . . . . . . . . . . . . . . .PHYSICAL DATA 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . .GENERAL FAN PERFORMANCE 93. . . . . . . . . . . . . . .START-UP CHECKLIST 99. . . . . . . . . . . . . . . . . . . . . . .SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipmentcan be hazardous due to system pressure and electricalcomponents. Only trained and qualified service personnelshould install, repair, or service air-conditioningequipment. Untrained personnel can perform the basicmaintenance functions of replacing filters. Trained servicepersonnel should perform all other operations.When working on air-conditioning equipment, observeprecautions in the literature, tags and labels attached tothe unit, and other safety precautions that may apply.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for unbrazing operations.Have fire extinguishers available for all brazingoperations.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for brazing operations. Havefire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions attached tothe unit. Consult local building codes and NationalElectrical Code (NEC) for special requirements.Recognize safety information. This is the safety--alertsymbol . When you see this symbol on the unit and ininstructions or manuals, be alert to the potential forpersonal injury.Understand the signal words DANGER, WARNING, andCAUTION. These words are used with the safety--alertsymbol. DANGER identifies the most serious hazardswhich will result in severe personal injury or death.WARNING signifies a hazard which could result inpersonal injury or death. CAUTION is used to identifyunsafe practices which may result in minor personalinjury or product and property damage. NOTE is used tohighlight suggestions which will result in enhancedinstallation, reliability, or operation.