Carrier 19EF Especificações Página 1

Start-Up, Operation, and Maintenance InstructionsSAFETY CONSIDERATIONSCentrifugal liquid chillers are designed to provide safeand reliable service whe

Fig. 5 — 19EF Controls and Sensor Locations (cont)10

Fig. 6 — Control Sensors (Temperature)Fig. 7 — Control Sensors(Pressure Transducer, Typical)LEGEND1—LID2—PSIO3—8-Input Module (One of 2 Available)4—5-

CONTROL TRANSFORMERS (T1-T4) — These trans-formers convert incoming control voltage to 21 vac powerfor the PSIO module and options modules, or 24 vac

Fig. 12 — 19EF Menu Structure13

Fig. 13 — 19EF Service Menu Structure14

MENU STRUCTURE — To perform any of the operationsdescribed below, the PIC must be powered up and have suc-cessfully completed its self test.• Press ME

3. Press RELEASE to remove the override and return thepoint to the PIC’s automatic control.Override Indication — An override value is indicated by‘‘SU

2. There are 4 set points on this screen: Base Demand Limit;LCW Set Point (leaving chilled water set point); ECWSet Point (entering chilled water set

Table 2 — LID Screens (cont)EXAMPLE2—STATUS02 DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press STATUS.3. Scroll

Table 2 — LID Screens (cont)EXAMPLE 5 — CONFIGURATION (CONFIG) DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press

CONTENTSPageSAFETY CONSIDERATIONS ...1INTRODUCTION ...4ABBREVIATIONS ...4MACHINE

Table 2 — LID Screens (cont)EXAMPLE 7 — SERVICE1 DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press SERVICE.3. Sc

Table 2 — LID Screens (cont)EXAMPLE 8 — SERVICE2 DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press SERVICE.3. Sc

Table 2 — LID Screens (cont)EXAMPLE 10 — MAINTENANCE (MAINT01) DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press

Table 2 — LID Screens (cont)EXAMPLE 12 — MAINTENANCE (MAINT03) DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press

PIC System FunctionsNOTE: Throughout this manual, words printed in capital let-ters and italics are values that may be viewed on the LID.See Table 2 f

• low cooler refrigerant temperature/pressure• condenser high pressure or low pressure• inadequate water/brine cooler and condenser flow• high, low, or

Flow Switch (Field Supplied) — Operate water pumpswith machine off. Manually reduce water flow and observeswitch for proper cutout. Safety shutdown occ

Table 4 — Capacity OverridesOVERRIDECAPACITYCONTROLFIRST STAGE SET POINTSECOND STAGESET POINTOVERRIDETERMINATIONView/Modifyon LID ScreenDefault Value

Condenser Freeze Prevention — This control al-gorithm helps prevent condenser tube freeze-up by energiz-ing the condenser pump relay. If the pump is c

Demand Limit Control, Option — (Requires Op-tional 8-Input Module) —The demand limit may beexternally controlled witha4to20mAsignal from an en-ergy ma

CONTENTS (cont)Page• MODIFY EQUIPMENT CONFIGURATIONIF NECESSARY• CHECK VOLTAGE SUPPLY• PERFORM AN AUTOMATEDCONTROLS TESTHigh Altitude Locations ...

Lead/Lag Control — Lead/lag is a control system pro-cess that automatically starts and stops a lag or second chillerin a 2-chiller water system. Refer

Standby Chiller Configuration and Operation — The con-figured standby chiller is identified as such by having theLEAD/LAG SELECT configured to the value o

ICE BUILD INITIATION — The Ice Build Time Scheduleprovides the means for activating ice build. The ice buildtime table is named OCCPC02S.If the Ice Bu

ATTACHING TO OTHER CCN MODULES — If the ma-chine PSIO has been connected to a CCN Network or otherPIC controlled chillers through CCN wiring, the LID

6. Press NEXT to highlight the holiday table that youwish to view or change. Each table is one holiday pe-riod, starting on a specific date, and lastin

When a safety shutdown occurs, the shutdown sequencefirst stops the compressor by deactivating the start relay. Astatus message of ‘‘SHUTDOWN IN PROGRE

Safety Shutdown — A safety shutdown is identical toa manual shutdown with the exception that the LID will dis-play the reason for the shutdown, the al

2. If the pressure readings are abnormal for machinecondition:a. Prepare to leak test machines shipped with refrigerant(Step 2h).b. Check for large le

Fig. 24 — 19EF Leak Test Procedures38

Table 5A — HFC-134a Pressure — Temperature (F)TEMPERATURE (F) PRESSURE (psi)0 6.502 7.524 8.606 9.668 10.7910 11.9612 13.1714 14.4216 15.7218 17.0620

INTRODUCTIONPrior to initial start-up of the 19EF unit, those involved inthe start-up, operation, and maintenance should be thor-oughly familiar with

Inspect Water Piping — Refer to piping diagrams pro-vided in the certified drawings, and the piping instructionsin the 19EF Installation Instructions m

To attach the CCN communication bus wiring, refer tothe certified drawings and wiring diagrams. The wire is in-serted into the CCN communications plug

Oil Charge — If oil is added, it must meet Carrier’s speci-fication for centrifugal compressor usage as described in theOil Specification section on pag

If, after configuring a value for these points, surge pre-vention is operating too soon or too late for conditions, theseparameters should be changed b

Table 6 — Amps Correction Factorsfor 19EF MotorsVOLT/HZMOTOR CODEDB DC DD DE DF DG DH DJ DK DL DM DN DP200/60 24332————————208/60 25443————————360/60

The full refrigerant charge on the 19EF will vary with ma-chine components and design conditions, indicated on thejob data specifications. An approxima

IF THE MOTOR ROTATION IS NOT CLOCKWISE (asviewed through the sight glass), reverse any 2 of the 3 in-coming power leads to the starter and recheck rot

OPERATING INSTRUCTIONSOperator Duties1. Become familiar with refrigeration machine and relatedequipment before operating the machine.2. Prepare the sy

After Extended Shutdown — Be sure that the watersystem drains are closed. It may be advisable to flush thewater circuits to remove any soft rust which

DateREFRIGERATION LOG CARRIER 19EF HERMETIC CENTRIFUGAL REFRIGERATION MACHINEPlantMACHINE MODEL NO. MACHINE SERIAL NO. REFRIGERANT TYPEDATE COOLER CON

26, 5619EF 56 26- 453 A DFMotor SizeGear SizeA, B, C, DModel DescriptionHermetic CentrifugalLiquid ChillerCooler SizeCompressor Code421 - 46926Condens

GENERAL MAINTENANCERefrigerant Properties —HFC-134a is the standardrefrigerant in the 19EF. At normal atmospheric pressure, HFC-134a will boil at −41

An oil heater is controlled by the PIC to maintain oil tem-perature above 140 F (60 C) or refrigerant temperature plus60° F (15.6° C) (see the Control

Refrigerant Filter — A replaceable core refrigerant filter/drier, located on the refrigerant cooling line to the motor,(Fig. 2) should have the core ch

Periodically vacuum or blow off accumulated debris onthe internal parts with a high-velocity, low-pressure blower.Power connections on newly installed

Calibration can be checked by comparing the pressure read-ings from the transducer against an accurate refrigeration gage.These readings are all viewe

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting GuidesA. SHUTDOWN WITH ON/OFF/RESET-OFFPRIMARY MESSAG

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)E. NORMAL OR AUTO.-RESTARTPRIMARY MESSAG

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)H. NORMAL RUN WITH RESET, TEMPERATURE, O

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)K. MACHINE PROTECT LIMIT FAULTSExcessive

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)L. MACHINE ALERTSPRIMARY MESSAGE SECONDA

After removing heat from the water, the refrigerant vaporpasses through the compressor first stage, is compressed anddischarged into the compressor sec

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)N. OTHER PROBLEMS/MALFUNCTIONSDESCRIPTIO

Table 10A — Thermistor Temperature (F) vs Resistance/Voltage DropTEMPERATURE VOLTAGE RESISTANCE(F) DROP (V) (OHMS)−25.0 4.821 98,010−24.0 4.818 94,707

Table 10B — Thermistor Temperature (C) vs Resistance/Voltage DropTEMPERATURE VOLTAGE RESISTANCE(C) DROP (V) (Ohms)−40 4.896 168 230−39 4.889 157 440−3

Control ModulesTurn controller power off before servicing controls. Thisensures safety and prevents damage to controller.The Processor module (PSIO),

Processor Module (PSIO) (Fig. 32)INPUTS — Each input channel has 3 terminals; only 2 ofthe terminals are used. Application of machine determineswhich

Terminal block connections are provided on the optionsmodules. All sensor inputs are field wired and installed. Op-tions module 1 can be factory or fiel

Physical Data — Tables 11-15 and Fig. 35-37 pro-vide additional information regarding compressor fits andclearances, physical and electrical data and w

VIEW AVIEW B(Refer to Table 14 for dimensions)DIM.219SEE VIEW A3 4 5 6 7 15 16 17, 188 SEE VIEW BFig. 35 — Compressor Fits and Clearances67

Table 14 — Compressor Fits and ClearancesITEM* DESCRIPTIONCLEARANCE†TYPE OFMEASUREin. mmMinimum Maximum Minimum Maximum1 1st Stage Impeller to Diaphag

Fig. 36 — Electronic PIC Controls Wiring Schematic69

LUBRICATION CYCLESummary —The compressor oil pump and oil reservoirare located in the compressor base. Oil is pumped throughan oil cooler and a filter

Fig. 36 — Electronic PIC Controls Wiring Schematic (cont)70

Fig. 37 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic71

INDEXAbbreviations, 4Attach to Network Device Control, 32Automatic Soft Stop Amps Threshold, 35Auto. Restart After Power Failure, 28Before Initial Sta

Oil Reclaim System — The oil reclaim system oper-ates to return oil back to the oil reservoir by recovering itfrom the compressor section.During norma

options. The LID has a STOP button, an alarm light, 4 but-tons for logic inputs, and a display. The function of the4 buttons or ‘‘softkeys’’ are menu