Carrier 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Also see for 30XA325: Installation instructions Installation instructions

Carrier 30XA080-500 Controls, Start-up, Operation, Service And Troubleshooting Instructions Manual pdf 1 page image

30XA080-500Air-Cooled Liquid Chillers60 HzControls, Start-Up, Operation, Serviceand TroubleshootingCONTENTSPageSAFETY CONSIDERATIONS ...................... 2GENERAL ...................................... 2-4Conventions Used in This Manual ................ 2Display Module Usage ........................... 3• NAVIGATOR TM DISPLAY MODULECONTROLS ................................... 4-41General .......................................... 4Main Base Board (MBB) .......................... 4Compressor Protection Module (CPM) ........... 6Electronic Expansion Valve (EXV) Board ......... 9Fan Boards ...................................... 11Enable-Off-Remote Contact Switch (SWl) ....... 13Emergency On/Off Switch (SW2) ................ 13Energy Management Module (EMM) ............. 13Local Equipment Network ....................... 14Board Addresses ................................ 14Control Module Communication ................. 14• RED LED• GREEN LED• YELLOW LEDCarrier Comfort Network® (CCN) Interface ...... 15Configuration Options .......................... 15• RAMP LOADING• MINUTES OFF TIMEDual Chiller Control ............................. 15• DUAL CHILLER PUMP CONTROL FOR PARALLELAPPLICATIONS• DUAL CHILLER PUMP CONTROL FOR SERIESCHILLER APPLICATIONSCapacity Control ................................ 16• EQUAL LOADING• STAGE LOADING• CAPACITY CONTROL OVERRIDESHead Pressure Control .......................... 22• LOW AMBIENT TEMPERATURE HEAD PRESSURECONTROL OFf'ION• LOW AMBIENT TEMPERATURE HEAD PRESSURECONTROL OPERATING INSTRUCTIONSMachine Control Methods ....................... 29• SWITCH CONTROL• TIME SCHEDULE• CCN CONTROL• UNITRUN STATUSCooling Set Point Selection ..................... 3O• SET POINT 1• SET POINT 2• 4 TO 20 mA INPUT• DUAL SWITCH• ICE MODE• SET POINT OCCUPANCYTemperature Reset .............................. 31Demand Limit ................................... 32• I-STEP SWITCH CONTROLLED• 2-STEP SWITCH CONTROLLEDPage• EXTERNALLY POWERED (4 to 20 mA Controlled)• CCN LOADSHED CONTROLLEDRemote Alarm and Alert Relays ................. 4OPRE-START-UP .................................. 41System Check ................................... 41START-UP .................................... 42-48Actual Start-Up .................................. 42Operating Limitations ........................... 42• TEMPERATURES• VOLTAGE• MINIMUM FLUID LOOP VOLUME• FLOW RATE REQUIREMENTSOPERATION .................................. 48-55Sequence of Operation .......................... 48• ACTUATED BALL VALVE (ABV)Dual Chiller Sequence of Operation ............. 49• PARALLEL PUMP OPERATIONOperating Modes ................................ 49Sensors ......................................... 52• THERMISTORS• TRANSDUCERSSERVICE ..................................... 56-66Economizer Assembly .......................... 56Electronic Expansion Valve (EXV) ............... 56• MAIN EXV CONTROL• ECONOMIZER EXV CONTROL• EXV TROUBLESHOOTING PROCEDURECompressor Assembly .......................... 59• COMPRESSOR OIL SYSTEMCooler ........................................... 61• SUCTION SERVICE VALVE• FREEZE PROTECTION• LOW FLUID TEMPERATURE• LOSS OF FLUID FLOW PROTECTION• TUBE PLUGGING• RETUBING• TIGHTENING COOLER HEAD BOLTS• INSPECTING/CLEANING HEAT EXHANGERS• WATER TREATMENT• CHILLED WATER FLOW SWITCHCondenser Coil Maintenance and CleaningRecommendations ............................ 64• REMOVE SURFACE LOADED FIBERS• PERIODIC CLEAN WATER RINSE• ROUTINE CLEANING OF COIL SURFACESCondenser Fans ................................ 65Refrigerant Circuit .............................. 65• LEAK TESTING• REFRIGERANT CHARGESafety Devices .................................. 66• COMPRESSOR PROTECTION• OIL SEPARATOR HEATERS• COOLER PROTECTIONRelief Devices ................................... 66• PRESSURE RELIEF VALVESManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 533-00069 Printed in U,S.A, Form 30XA-1T Pg 1 12-05 Replaces: New