Carrier 19XR Start-up, Operation And Maintenance Instructions Manual

Also see for HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR: User manual Start-up and service instructions Installation instructions Product data Installation instructions

Contents

Carrier 19XR Start-up, Operation And Maintenance Instructions Manual Manual pdf 4 page image

CONTENTS (cont)PageTROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 69-99Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Checking the Display Messages . . . . . . . . . . . . 69Checking Temperature Sensors . . . . . . . . . . . . 69• RESISTANCE CHECK• VOLTAGE DROP• CHECK SENSOR ACCURACY• DUAL TEMPERATURE SENSORSChecking Pressure Transducers . . . . . . . . . . . . 70• COOLER AND CONDENSER PRESSURETRANSDUCER AND WATERSIDE FLOW DEVICECALIBRATION• TRANSDUCER REPLACEMENTControl Algorithms Checkout Procedure . . . . 70Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 80• RED LED (Labeled as STAT)• GREEN LED (Labeled as COM)PageNotes on Module Operation . . . . . . . . . . . . . . . . 80Chiller Control Module (CCM) . . . . . . . . . . . . . . . . 81• INPUTS• OUTPUTSISM Integrated Starter Module . . . . . . . . . . . . . . 81• INPUTS• OUTPUTSReplacing Defective Processor Modules . . . . 81• INSTALLATIONSolid-State Starters . . . . . . . . . . . . . . . . . . . . . . . . 81• TESTING SILICON CONTROL RECTIFIERSIN BENSHAW, INC. SOLID-STATE STARTERS• SCR REMOVAL/INSTALLATIONPhysical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,101INITIAL START-UP CHECKLIST FOR19XR HERMETIC CENTRIFUGALLIQUID CHILLER . . . . . . . . . . . . . . . . . . CL-1 to CL-12INTRODUCTIONPrior to initial start-up of the 19XR unit, those involvedin the start-up, operation, and maintenance should be thor-oughly familiar with these instructions and other necessaryjob data. This book is outlined to familiarize those involvedin the start-up, operation and maintenance of the unit withthe control system before performing start-up procedures. Pro-cedures in this manual are arranged in the sequence requiredfor proper chiller start-up and operation.This unit uses a microprocessor control system. Do notshort or jumper between terminations on circuit boardsor modules; control or board failure may result.Be aware of electrostatic discharge (static electricity) whenhandling or making contact with circuit boards or mod-ule connections. Always touch a chassis (grounded) partto dissipate body electrostatic charge before working in-side control center.Use extreme care when handling tools near boards andwhen connecting or disconnecting terminal plugs. Cir-cuit boards can easily be damaged. Always hold boardsby the edges and avoid touching components andconnections.This equipment uses, and can radiate, radio frequencyenergy. If not installed and used in accordance with theinstruction manual, it may cause interference to radiocommunications. It has been tested and found to com-ply with the limits for a Class A computing device pur-suant to Subpart J of Part 15 of FCC Rules, which aredesigned to provide reasonable protection against suchinterference when operated in a commercial environ-ment. Operation of this equipment in a residential areais likely to cause interference, in which case the user, athis own expense, will be required to take whatever mea-sures may be required to correct the interference.Always store and transport replacement or defective boardsin anti-static shipping bag.ABBREVIATIONS AND EXPLANATIONSFrequently used abbreviations in this manual include:CCM — Chiller Control ModuleCCN — Carrier Comfort NetworkCVC — Chiller Visual ControlCCW — CounterclockwiseCW — ClockwiseECDW — Entering Condenser WaterECW — Entering Chilled WaterEMS — Energy Management SystemHGBP — Hot Gas BypassI/O — Input/OutputISM — Integrated Starter ModuleLCD — Liquid Crystal DisplayLCDW — Leaving Condenser WaterLCW — Leaving Chilled WaterLED — Light-Emitting DiodeOLTA — Overload Trip AmpsPIC II — Product Integrated Control IIRLA — Rated Load AmpsSCR — Silicon Controlled RectifierSI — International System of UnitsTXV — Thermostatic Expansion ValveWords printed in all capital letters or in italics may be viewedon the Chiller Visual Control (CVC) (e.g., LOCAL, CCN,ALARM, etc.).Words printed in both all capital letters and italics can alsobe viewed on the CVC and are parameters (e.g., CONTROLMODE, COMPRESSOR START RELAY, ICE BUILDOPTION, etc.) with associated values (e.g., modes, tempera-tures, percentages, pressures, on, off, etc.).Words printed in all capital letters and in a box representsoftkeys on the CVC control panel (e.g., ENTER ,EXIT , INCREASE , QUIT , etc.).Factory-installed additional components are referred to asoptions in this manual; factory-supplied but field-installedadditional components are referred to as accessories.The chiller software part number of the 19XR unit is lo-cated on the back of the CVC.4