Carrier Ecologic 30GX080-265 Controls, Start-up, Operation, Service, And Troubleshooting

Also see for 30GX080-265: User manual

Contents

field wiring

Carrier Ecologic 30GX080-265 Controls, Start-up, Operation, Service, And Troubleshooting Manual pdf 1 page image

Controls, Start-Up, Operation,Service, and TroubleshootingSAFETY CONSIDERATIONSInstalling, starting up, and servicing this equipment canbe hazardous due to system pressures, electrical compo-nents, and equipment location (roof, elevated structures, etc.).Only trained, qualified installers and service mechanics shouldinstall, start up, and service this equipment.When working on this equipment, observe precautions inthe literature, and on tags, stickers, and labels attached to theequipment, and any other safety precautions that apply. Fol-low all safety codes. Wear safety glasses and work gloves.Use care in handling, rigging, and setting this equipment,and in handling all electrical components.Electrical shock can cause personal injury and death.Shut off all power to this equipment during installationand service. There may be more than one disconnectswitch. Tag all disconnect locations to alert others notto restore power until work is completed.This unit uses a microprocessor-based electronic con-trol system. Do not use jumpers or other tools to shortout components, or to bypass or otherwise depart fromrecommended procedures. Any short-to-ground of thecontrol board or accompanying wiring may destroy theelectronic modules or electrical components.To prevent potential damage to heat exchanger tubes al-ways run fluid through heat exchangers when adding orremoving refrigerant charge.DO NOT VENT refrigerant relief valves within a build-ing. Outlet from relief valves must be vented outdoorsin accordance with the latest edition of ANSI/ASHRAE(American National Standards Institute/American Soci-ety of Heating, Refrigeration and Air Conditioning En-gineers) 15 (Safety Code for Mechanical Refrigeration).The accumulation of refrigerant in an enclosed spacecan displace oxygen and cause asphyxiation. Provide ad-equate ventilation in enclosed or low overhead areas.Inhalation of high concentrations of vapor is harmfuland may cause heart irregularities, unconsciousness ordeath. Misuse can be fatal. Vapor is heavier than air andreduces the amount of oxygen available for breathing.Product causes eye and skin irritation. Decompositionproducts are hazardous.DO NOT attempt to unbraze factory joints when ser-vicing this equipment. Compressor oil is flammable andthere is no way to detect how much oil may be in anyof the refrigerant lines. Cut lines with a tubing cutter asrequired when performing service. Use a pan to catchany oil that may come out of the lines and as a gage forhow much oil to add to system. DO NOT re-use com-pressor oil.CONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . 3Processor Module (PSIO-1) . . . . . . . . . . . . . . . . . . . 3DSIO-HV Relay Module . . . . . . . . . . . . . . . . . . . . . . . 3Electronic Expansion Device Module . . . . . . . . . 3Compressor Protection Module (CPM) . . . . . . . . . 3PSIO-2 (8052) Module . . . . . . . . . . . . . . . . . . . . . . . . 3Keypad and Display Module(Also Called HSIO-II) . . . . . . . . . . . . . . . . . . . . . . . 3Control (LOR) Switch . . . . . . . . . . . . . . . . . . . . . . . . . 3OPERATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42Electronic Expansion Device (EXD) . . . . . . . . . . . 3• EXV OPERATION• ECONOMIZER OPERATIONOil Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Motor Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Back Pressure Valve (30GX and 30HXA only) . . 4Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Compressor Protection Module (CPM) . . . . . . . . . 4• OUTPUTS• INPUTSWye-Delta vs Across-the-Line (XL)Starting Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6• MINUTES LEFT FOR START• MINUTES OFF TIME• LOADING SEQUENCE• CLOSE CONTROL• LEAD/LAG DETERMINATION• CAPACITY SEQUENCE DETERMINATION• MINIMUM LOAD VALVE• CAPACITY CONTROL OVERRIDESHead Pressure Control . . . . . . . . . . . . . . . . . . . . . . . 8• GENERAL• AIR COOLED UNITS (30GX)• WATER COOLED UNITS (30HX)• ADJUSTING PID ROUTINESCooler and Condenser (30HXC)Pump Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1030GX080-26530HXA,HXC076-271ECOLOGIC™ Air-Cooled and Fluid Cooled Chillers50/60 HzManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 2Tab 5c PC 903 Catalog No. 533-062 Printed in U.S.A. Form 30G,H-3T Pg 1 1-98 Replaces: 30G,H-2TSeries 0,1,2