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Carrier HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR, Руководство по запуску, эксплуатации и техническому обслуживанию, Страница: 35 / 116

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Carrier HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR Скачать руководство пользователя страница 35

Shunt Trip (Option) —

The function of the shunt trip

option on the PIC II is to act as a safety trip. The shunt trip
is wired from an output on the ISM to a shunt trip equipped
motor circuit breaker. If the PIC II tries to shut down the
compressor using a normal shutdown procedure but is un-
successful for 30 seconds, the shunt trip output is energized
and causes the circuit breaker to trip off. If ground fault pro-
tection has been applied to the starter, the ground fault trip
also energizes the shunt trip to trip the circuit breaker. Pro-
tective devices in the starter can also energize the shunt trip.
The shunt trip feature can be tested using the Control Test
feature.

Default Screen Freeze —

When the chiller is in an

alarm state, the default CVC display ‘‘freezes,’’ that is, it
stops updating. The first line of the CVC default screen dis-
plays a primary alarm message; the second line displays a
secondary alarm message.

The CVC default screen freezes to enable the operator to

see the conditions of the chiller at the time of the alarm. If
the value in alarm is one normally displayed on the default
screen, it flashes between normal and reverse video. The CVC
default screen remains frozen until the condition that caused
the alarm is remedied by the operator.

Knowledge of the operating state of the chiller at the time

an alarm occurs is useful when troubleshooting. Additional
chiller information can be viewed on the status screens and
the ISM_HIST screen. Troubleshooting information is re-
corded in the ALARM HISTORY table, which can be ac-
cessed from the SERVICE menu.

To determine what caused the alarm, the operator should

read both the primary and secondary default screen mes-
sages, as well as the alarm history. The primary message
indicates the most recent alarm condition. The secondary mes-
sage gives more detail on the alarm condition. Since there
may be more than one alarm condition, another alarm mes-
sage may appear after the first condition is cleared. Check
the ALARM HISTORY screen for additional help in deter-
mining the reasons for the alarms. Once all existing alarms
are cleared (by pressing the RESET softkey), the default
CVC display returns to normal operation.

Ramp Loading —

The ramp loading control slows down

the rate at which the compressor loads up. This control can
prevent the compressor from loading up during the short pe-
riod of time when the chiller is started and the chilled water
loop has to be brought down to CONTROL POINT. This helps
reduce electrical demand charges by slowly bringing the chilled
water to CONTROL POINT. The total power draw during
this period remains almost unchanged.

There are two methods of ramp loading with the PIC II.

Ramp loading can be based on chilled water temperature or
on motor load. Either method is selected from the
RAMP__DEM screen.
1. Temperature ramp loading (TEMP PULLDOWN DEG/

MIN) limits the degrees per minute rate at which either
leaving chilled water or entering chilled water tempera-
ture decreases. This rate is configured by the operator on
the TEMP_CTL screen. The lowest temperature ramp rate
will also be used if chiller power has been off for 3 hours
or more (even if the motor ramp load is selected as the
ramp loading method.

2. Motor load ramp loading (LOAD PULLDOWN) limits the

degrees per minute rate at which the compressor motor
current or compressor motor load increases. The LOAD
PULLDOWN rate is configured by the operator on the
RAMP_DEM screen in amps or kilowatts.

If kilowatts is selected for the DEMAND LIMIT SOURCE,

the MOTOR RATED KILOWATTS must be entered (infor-
mation found on the chiller Requisition form).

The TEMP PULLDOWN DEG/MIN may be viewed or modi-

fied on the TEMP_CTL screen which is accessed from the
EQUIPMENT SERVICE screen. PULLDOWN RAMP TYPE,
DEMAND LIMIT SOURCE, and MOTOR LOAD RAMP
%/MIN may be viewed or modified on the RAMP_DEM screen.

Capacity Override (Table 4) —

Capacity overrides

can prevent some safety shutdowns caused by exceeding the
motor amperage limit, refrigerant low temperature safety limit,
motor high temperature safety limit, and condenser high pres-
sure limit. In all cases there are 2 stages of compressor vane
control.
1. The vanes are prevented from opening further, and

the status line on the CVC indicates the reason for the
override.

2. The vanes are closed until the condition decreases to be-

low the first step set point. Then the vanes are released to
normal capacity control.

Whenever the motor current demand limit set point

(ACTIVE DEMAND LIMIT) is reached, it activates a capac-
ity override, again, with a 2-step process. Exceeding 110%
of the rated load amps for more than 30 seconds will initiate
a safety shutdown.

The compressor high lift (surge prevention) set point will

cause a capacity override as well. When the surge preven-
tion set point is reached, the controller normally will only
prevent the guide vanes from opening. If so equipped, the
hot gas bypass valve will open instead of holding the vanes.
See the Surge Prevention Algorithm section, page 38.

High Discharge Temperature Control —

If the dis-

charge temperature increases above 160 F (71.1 C), the guide
vanes are proportionally opened to increase gas flow through
the compressor. If the leaving chilled water temperature is
then brought 5° F (2.8° C) below the control set point tem-
perature, the PIC II will bring the chiller into the recycle
mode.

Oil Sump Temperature Control —

The oil sump tem-

perature control is regulated by the PIC II, which uses the
oil heater relay when the chiller is shut down.

As part of the pre-start checks executed by the controls,

the oil sump temperature (OIL SUMP TEMP) is compared
to the cooler refrigerant temperature (EVAPORATOR
REFRIG TEMP). If the difference between these 2 tempera-
tures is 50 F (27.8 C) or less, the start-up will be delayed
until the oil temperature is 50 F (27.8 C) or more. Once this
temperature is confirmed, the start-up continues.

The oil heater relay is energized whenever the chiller com-

pressor is off and the oil sump temperature is less than
140 F (60.0 C) or the oil sump temperature is less than
the cooler refrigerant temperature plus 53° F (11.7° C). The
oil heater is turned off when the oil sump temperature is
either
• more than 152 F (66.7 C), or
• more than 142 F (61.1 C) and more than the cooler

refrigerant temperature plus 55° F (12.8° C).

The oil heater is always off during start-up or when the

compressor is running.

The oil pump is also energized during the time the oil

is being heated (for 60 seconds at the end of every
30 minutes).

35

Содержание HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR

Страница 1: ...LY FLUSH EYES with water and consult a physician NEVER APPLY an open flame or live steam to a refrigerant cylinder Dangerous over pressure can result When it is necessary to heat refrigerant use only warm 110 F 43 C water DO NOT REUSE disposable nonreturnable cylinders or attempt to refill them It is DANGEROUS AND ILLEGAL When cylinder is emptied evacuate remaining gas pressure loosen the collar a...

Страница 2: ...Remote Start Stop Controls 36 Spare Safety Inputs 36 Spare Safety Alarm Contacts 36 Refrigerant Leak Detector 36 Condenser Pump Control 36 Condenser Freeze Prevention 37 Tower Fan Relay Low and High 37 Auto Restart After Power Failure 37 Water Brine Reset 37 RESET TYPE 1 RESET TYPE 2 RESET TYPE 3 Demand Limit Control Option 38 Surge Prevention Algorithm 38 Surge Protection 39 Lead Lag Control 39 C...

Страница 3: ...fter Limited Shutdown 60 Preparation for Extended Shutdown 60 Page After Extended Shutdown 60 Cold Weather Operation 60 Manual Guide Vane Operation 60 Refrigeration Log 60 PUMPOUT AND REFRIGERANT TRANSFER PROCEDURES 62 64 Preparation 62 Operating the Optional Pumpout Unit 62 TO READ REFRIGERANT PRESSURES Chillers with Storage Tanks 63 TRANSFER REFRIGERANT FROM PUMPOUT STORAGE TANK TO CHILLER TRANS...

Страница 4: ...onents and connections This equipment uses and can radiate radio frequency energy If not installed and used in accordance with the instruction manual it may cause interference to radio communications 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 are designed to provide reasonable protection against such i...

Страница 5: ... The condenser operates at a higher temperature pressure than the cooler and has water flowing through its internal tubes in order to remove heat from the refrigerant Motor Compressor This component maintains sys tem temperature and pressure differences and moves the heat carrying refrigerant from the cooler to the condenser Control Panel The control panel is the user interface for controlling the...

Страница 6: ...e 14 Oil Level Sight Glasses 15 Refrigerant Oil Cooler Hidden 16 Auxiliary Power Panel 17 Motor Housing LEGEND 18 Condenser Auto Reset Relief Valves 19 Motor Circuit Breaker 20 Solid State Starter Control Display 21 Unit Mounted Starter Optional Solid State Starter Shown 22 Motor Sight Glass 23 Cooler Return End Waterbox Cover 24 ASME Nameplate One Hidden 25 Typical Waterbox Drain Port 26 Condense...

Страница 7: ...he refrigerant is quite warm typically 98 to 102 F 37 to 40 C when it is discharged from the compressor into the condenser Relatively cool typically 65 to 90 F 18 to 32 C water flowing into the condenser tubes removes heat from the re frigerant and the vapor condenses to liquid The liquid refrigerant passes through orifices into the FLASC Flash Subcooler chamber Fig 3 Since the FLASC cham ber is a...

Страница 8: ...down see Oil Sump Temperature Control section page 35 This temperature is read on the CVC default screen During the chiller start up the PIC II energizes the oil pump and provides 45 seconds of prelubrication to the bearings after pressure is verified before starting the compressor During shutdown the oil pump will run for 60 seconds to post lubricate after the compressor shuts down The oil pump c...

Страница 9: ...tor at full voltage is typically 125 to 175 of the running torque When the voltage and the current are reduced at start up the starting torque is reduced as well The object is to reduce the starting voltage to just the voltage necessary to develop the torque required to get the motor moving The voltage is re duced by silicon controlled rectifiers SCRs The voltage and current are then ramped up in ...

Страница 10: ...ed water or brine temperature and regula ting the inlet guide vane via a mechanically linked actuator motor The guide vane is a variable flow pre whirl assem bly that controls the refrigeration effect in the cooler by regulating the amount of refrigerant vapor flow into the com pressor An increase in guide vane opening increases capac ity A decrease in guide vane opening decreases capacity The mic...

Страница 11: ...R SENSOR CABLES WATER SENSOR CABLES COOLER PRESSURE CONNECTION CONDENSER PRESSURE CABLE CONDENSER SCHRADER FITTING HIDDEN CONDENSER PRESSURE CONNECTION TRANSDUCER COMPRESSOR DISCHARGE ELBOW JOINTS MOTOR WINDING TEMPERATURE CABLE TOP VIEW VIEW A A COMPRESSOR DETAIL Fig 7 19XR Controls and Sensor Locations 11 ...

Страница 12: ...orward to back ward to change the viewing angle See Fig 10 To change the contrast of the display access the adjustment on the back of the CVC See Fig 10 INTEGRATED STARTER MODULE ISM This mod ule is located in the starter cabinet This module initiates com mands from the CVC for starter functions such as starting and stopping the compressor condenser chilled water pumps tower fan spare alarm contac...

Страница 13: ...Fig 10 Control Panel Fig 11 Power Panel 13 ...

Страница 14: ...ce automatically after power up Press the MENU softkey to view the list of menu struc tures STATUS SCHEDULE SETPOINT and SERVICE The STATUS menu allows viewing and limited calibra tion or modification of control points and sensors relays and contacts and the options board The SCHEDULE menu allows viewing and modification of the local and CCN time schedules and Ice Build time schedules The SETPOINT...

Страница 15: ... Press NEXT or PREVIOUS to highlight the desired status table The list of tables is MAINSTAT Overall chiller status STARTUP Status required to perform startup of chiller COMPRESS Status of sensors related to the compressor HEAT_EX Status of sensors related to the heat exchangers POWER Status of motor input power ISM_STAT Status of motor starter CVC_PSWD Service menu password forcing ac cess screen...

Страница 16: ...URE 16 Base Demand Limit LCW Setpoint ECW Setpoint Ice Build Setpoint Tower Fan High Setpoint EXIT SELECT PREVIOUS NEXT Select a Schedule 1 2 3 4 5 6 7 8 Override ENABLE DISABLE EXIT SELECT PREVIOUS NEXT Select a Time Period Override Modify a Schedule Time ENTER EXIT INCREASE DECREASE ENTER EXIT ANALOG VALUES DISCRETE VALUES Add Eliminate a Day 1 1 1 Select a Status Table NEXT PREVIOUS SELECT EXIT...

Страница 17: ...y LOADSHED WSMDEFME Water System Manager Control Status OCCDEFCM Time Schedule Status NEXT PREVIOUS SELECT EXIT Select a Table NET_OPT BRODEF OCCEFCS HOLIDAYS CONSUME RUNTIME ANALOG VALUES DISCRETE VALUES DISCRETE VALUES Select a Parameter NEXT PREVIOUS SELECT EXIT Modify a Parameter ENTER ENABLE DISABLE QUIT DECREASE INCREASE ENTER QUIT QUIT YES NO ENTER NEXT PREVIOUS SELECT EXIT Select a Table E...

Страница 18: ...ce Attach to LOCAL to enter this machine To upload new tables Default Screen MENU RESET CCN LOCAL LOG OUT OF DEVICE List Network Devices Local Device 1 Device 2 Device 3 Device 4 Device 5 Device 6 Device 7 Device 8 Device 9 Service Tables OPTIONS SETUP1 SETUP2 LEADLAG RAMP_DEM TEMP_CTL EQUIPMENT SERVICE ISM STARTER CONFIG DATA Service Tables ISM STARTER CONFIG PASSWORD ISM_CONFIG ENTER A 4 DIGIT P...

Страница 19: ...eturn the point to the PIC II s automatic control Override Indication An override value is indicated by SUPVSR SERVC or BEST flashing next to the point value on the STATUS table TIME SCHEDULE OPERATION Fig 17 1 On the Menu screen press SCHEDULE 2 Press NEXT or PREVIOUS to highlight the de sired schedule OCCPC01S LOCAL Time Schedule OCCPC02S ICE BUILD Time Schedule OCCPC03 CCN Time Schedule 3 Press...

Страница 20: ...ving chilled water set point ECW SETPOINT entering chilled water set point ICE BUILD SETPOINT and TOWER FAN HIGH SET POINT Only one of the chilled water set points can be active at one time The set point that is active is deter mined from the SERVICE menu See the Service Opera tion section page 43 The ice build ICE BUILD func tion is also activated and configured from the SERVICE menu 3 Press NEXT...

Страница 21: ...talized Reference Point Names preceded by two asterisks can be changed only from the CVC Reference Point Names in lower case type can be viewed by CCN or BS only by viewing the whole table 7 Alarms and Alerts An asterisk in the far right field of a CVC status screen indicates that the chiller is in an alarm state an exclama tion point in the far right field of the CVC screen indicates an alert sta...

Страница 22: ...eady Recycle Prestart Start up Ramping Running Demand Override Shutdown Trippout Pumpdown Lockout 3 Normal Alert Alarm 4 All variables with capital letter point names are available for CCN read operation Those shown with support write operations for all CCN devices EXAMPLE 3 STARTUP DISPLAY SCREEN To access this display from the CVC default screen 1 Press MENU 2 Press STATUS 3 Scroll down to highl...

Страница 23: ...s for the CVC only EXAMPLE 5 HEAT EX DISPLAY SCREEN To access this display from the CVC default screen 1 Press MENU 2 Press STATUS 3 Scroll down to highlight HEAT EX 4 Press SELECT DESCRIPTION STATUS UNITS POINT Chilled Water Delta P 6 7 420 PSI CHW PD Entering Chilled Water 40 245 DEG F ECW Leaving Chilled Water 40 245 DEG F LCW Chilled Water Delta T 6 7 420 F CHW DT Chill Water Pulldown Min 20 2...

Страница 24: ...ll down to highlight ISM STAT 4 Press SELECT DESCRIPTION STATUS UNITS POINT ISM Fault Status 0 223 ISMFLT Single Cycle Dropout 0 1 NORMAL ALARM CYCLE 1 Phase Loss 0 1 NORMAL ALARM PH LOSS Overvoltage 0 1 NORMAL ALARM OV VOLT Undervoltage 0 1 NORMAL ALARM UN VOLT Current Imbalance 0 1 NORMAL ALARM AMP UNB Voltage Imbalance 0 1 NORMAL ALARM VOLT UNB Overload Trip 0 1 NORMAL ALARM OVERLOAD Locked Rot...

Страница 25: ...1 Press MENU 2 Press SERVICE 3 Scroll down to highlight CONTROL ALGORITHM STATUS 4 Press SELECT 5 Scroll down to highlight CAPACITY DESCRIPTION STATUS UNITS POINT Entering Chilled Water 40 245 DEG F ECW Leaving Chilled Water 40 245 DEG F LCW Capacity Control Control Point 10 120 DEG F ctrlpt Control Point Error 99 99 DEG F cperr ECW Delta T 99 99 DEG F ecwdt ECW Reset 99 99 DEG F ecwres LCW Reset ...

Страница 26: ...creen 1 Press MENU 2 Press SERVICE 3 Scroll down to highlight CONTROL ALGORITHM STATUS 4 Press SELECT 5 Scroll down to highlight LL MAINT DESCRIPTION STATUS UNITS POINT Lead Lag Control LEAD LAG Configuration NOTE 1 leadlag Current Mode NOTE 2 llmode Load Balance Option 0 1 DSABLE ENABLE loadbal LAG Start Time 2 60 MIN lagstart LAG Stop Time 2 60 MIN lagstop PRESTART FAULT Time 2 30 MIN preflt Pul...

Страница 27: ...um Heat Phase 3 0 200 HEAT3SUMF Phase 1 Faulted 0 1 NO YES PH1 FLT Phase 2 Faulted 0 1 NO YES PH2 FLT Phase 3 Faulted 0 1 NO YES PH3 FLT Line Frequency 0 99 Hz FREQ F ISM Fault Status 0 9999 ISM STAT NOTE All variables with CAPITAL LETTER point names are available for CCN read operation forcing shall not be supported on maintenance screens EXAMPLE 13 WSMDEFME DISPLAY SCREEN To access this display ...

Страница 28: ...NF DESCRIPTION STATUS UNITS POINT DEFAULT Starter Type 0 2 starter 1 0 Full 1 Red 2 SS VFD Motor Rated Line Voltage 200 13200 VOLTS v fs 460 Volt Transformer Ratio 1 1 33 vt rat 1 Overvoltage Threshold 105 115 overvolt 115 Undervoltage Threshold 85 95 undvolt 85 Over Under Volt Time 1 10 SEC uvuntime 5 Voltage Imbalance 1 10 v unbal 5 Voltage Imbalance Time 1 10 SEC v time 5 Motor Rated Load Amps ...

Страница 29: ...riables are available for CCN read or write operation EXAMPLE 17 SETUP1 DISPLAY SCREEN To access this display from the CVC default screen 1 Press MENU 2 Press SERVICE 3 Scroll down to highlight EQUIPMENT SERVICE 4 Press SELECT 5 Scroll down to highlight SETUP1 DESCRIPTION STATUS UNITS POINT DEFAULT Comp Motor Temp Override 150 200 DEG F mt over 200 Cond Press Override 90 165 PSI cp over 125 Comp D...

Страница 30: ... vfd gain 0 75 VFD Increase Step 1 5 vfd step 2 VFD Minimum Speed 65 100 vfd min 70 VFD Maximum speed 90 110 vfd max 100 NOTE No variables are available for CCN read operation forcing shall be supported on service screens EXAMPLE 19 LEADLAG DISPLAY SCREEN To access this display from the CVC default screen 1 Press MENU 2 Press SERVICE 3 Scroll down to highlight EQUIPMENT SERVICE 4 Press SELECT 5 Sc...

Страница 31: ...Watts Interval 5 60 MIN dw int 15 NOTE No variables are available for CCN read or write operation EXAMPLE 20 TEMP_CTL DISPLAY SCREEN To access this display from the CVC default screen 1 Press MENU 2 Press SERVICE 3 Scroll down to highlight EQUIPMENT SERVICE 4 Press SELECT 5 Scroll down to highlight TEMP_CTL DESCRIPTION STATUS UNITS POINT DEFAULT Control Point EWB Control Option 0 1 DSABLE ENABLE e...

Страница 32: ...r modified from the SETUP2 screen which is accessed from the EQUIPMENT SERVICE table The Proportional Band There are two response modes one for temperature response above the control point the other for the response below the control point The temperature response above the control point is called the PROPORTIONAL INC BAND and it can slow or quicken guide vane response to chilled water brine tempe...

Страница 33: ... refrigerant temperature pressure condenser high pressure or low pressure inadequate water brine cooler and condenser flow high low or loss of voltage ground fault voltage imbalance current imbalance excessive motor acceleration time excessive starter transition time lack of motor current signal excessive motor amps excessive compressor surge temperature and transducer faults Superheat is the diff...

Страница 34: ...110 for one minute Preset based on transformed line voltage to ISM Also monitored at CVC and CCM power input LOW 90 for one minute or 85 for 3 seconds SINGLE CYCLE 50 for one cycle COMPRESSOR MOTOR LOAD 110 for 30 seconds Preset 15 with compressor running Preset 15 with compressor off Preset STARTER ACCELERATION TIME Determined by inrush current going below 100 compressor motor load 45 seconds For...

Страница 35: ... more even if the motor ramp load is selected as the ramp loading method 2 Motor load ramp loading LOAD PULLDOWN limits the degrees per minute rate at which the compressor motor current or compressor motor load increases The LOAD PULLDOWN rate is configured by the operator on the RAMP_DEM screen in amps or kilowatts If kilowatts is selected for the DEMAND LIMIT SOURCE the MOTOR RATED KILOWATTS mus...

Страница 36: ...ollowed by the LOCAL or CCN softkey This ensures that if the automatic system is mal functioning the chiller will not repeatedly cycle on and off If the automatic restart after a power failure option AUTO RESTART OPTION on the OPTIONS screen is not acti vated when a power failure occurs and if the remote contact is closed the chiller will indicate an alarm because of the loss of voltage The contac...

Страница 37: ...talled The system should maintain the leaving condenser water temperature at a temperature that is 20 F 11 C above the leaving chilled water temperature The tower fan relay control is not a substitute for a condenser water temperature control When used with a water temperature control system the tower fan relay control can be used to help prevent low condenser water temperatures Auto Restart After...

Страница 38: ...ing entering condenser water temperature The surge prevention algorithm first determines if cor rective action is necessary The algorithm checks 2 sets of operator configured data points the minimum load points MIN LOAD POINT T1 P1 and the full load points FULL LOAD POINT T2 P2 These points have default settings as defined on the OPTIONS screen or on Table 4 The surge prevention algorithm function...

Страница 39: ...en and a common point sensor is desired COMMON SENSOR OPTION in LEADLAG screen selected as 1 then the sensor is wired in Spare Temp 2 position on the CCM When installing chillers in series a common point sensor should be used If a common point sensor is not used the leaving chilled water sensor of the upstream chiller must be moved into the leaving chilled water pipe of the downstream chiller If r...

Страница 40: ...QUIPMENT SERVICE table of the SERVICE menu When all the above requirements have been met the lag chiller is commanded to a STARTUP mode SUPVSR flash ing next to the point value on the STATUS table The PIC II control then monitors the lag chiller for a successful start If the lag chiller fails to start the standby chiller if configured is started Lag Chiller Shutdown Requirements The following con ...

Страница 41: ... inputs from an ice level indi cator are opened In this case the operator sets the ICE BUILD TERMINATION parameter to 1 on the OPTIONS screen the chilled water temperature is less than the ice build set point and the remote contact inputs from an ice level in dicator are open In this case the operator sets the ICE BUILD TERMINATION parameter to 2 on the OPTIONS screen the end of the ice build time...

Страница 42: ...en From this screen the operator can enter the time schedule number if changed for OCCPC03S as defined in the NET_OPT screen attach the CVC to any CCN device if the chiller has been connected to a CCN network This may include other PIC controlled chillers upgrade software Figure 21 shows the ATTACH TO NETWORK DEVICE screen The LOCAL parameter is always the CVC module address of the chiller on whic...

Страница 43: ...om the SERVICE menu highlight LOG OUT OF NETWORK DEVICE and press the SELECT softkey The CVC default screen will now be displayed HOLIDAY SCHEDULING Fig 22 The time schedules may be configured for special operation during a holiday period When modifying a time period the H at the end of the days of the week field signifies that the period is applicable to a holiday See Fig 17 The broadcast functio...

Страница 44: ... or aborted If the tests are successful the chilled water brine pump relay energizes and the MAINSTAT screen line now reads STARTUP Five seconds later the condenser pump relay energizes Thirty seconds later the PIC II monitors the chilled water and condenser water flow devices and waits until the WATER FLOW VERIFY TIME operator configured default 5 minutes expires to confirm flow After flow is ver...

Страница 45: ...an be terminated and the compressor motor deenergized immediately by de pressing the STOP button twice Chilled Water Recycle Mode The chiller may cycle off and wait until the load increases to restart when the compressor is running in a lightly loaded condition This cycling is normal and is known as 9recycle 9 A recycle shut down is initiated when any of the following conditions are true the chill...

Страница 46: ...er arrives at the jobsite Tighten all gas keted joints and the guide vane shaft packing to ensure a leak tight chiller Check Chiller Tightness Figure 25 outlines the proper sequence and procedures for leak testing 19XR chillers are shipped with the refrigerant contained in the condenser shell and the oil charge in the compressor The cooler is shipped with a 15 psig 103 kPa refrigerant charge Units...

Страница 47: ...Fig 25 19XR Leak Test Procedures 47 ...

Страница 48: ...ear for the entire chiller must be repaired Note the total chiller leak rate on the start up report 5 If no leak is found during the initial start up procedures complete the transfer of refrigerant gas from the pumpout storage tank to the chiller see Transfer Refrig erant from Pumpout Storage Tank to Chiller section page 63 Retest for leaks 6 If no leak is found after a retest a Transfer the refri...

Страница 49: ...Fig 26 Typical Optional Pumpout System Piping Schematic with Storage Tank Fig 27 Typical Optional Pumpout System Piping Schematic without Storage Tank 49 ...

Страница 50: ... 55 138 222 76 140 229 09 Table 5B HFC 134a Pressure Temperature C TEMPERATURE C PRESSURE GAGE kPa 18 0 44 8 16 7 51 9 15 6 59 3 14 4 66 6 13 3 74 4 12 2 82 5 11 1 90 8 10 0 99 4 8 9 108 0 7 8 118 0 6 7 127 0 5 6 137 0 4 4 147 0 3 3 158 0 2 2 169 0 1 1 180 0 0 0 192 0 1 1 204 0 2 2 216 0 3 3 229 0 4 4 242 0 5 0 248 0 5 6 255 0 6 1 261 0 6 7 269 0 7 2 276 0 7 8 284 0 8 3 290 0 8 9 298 0 9 4 305 0 1...

Страница 51: ...he slow rate of evaporation sublimation of ice at these low tempera tures and pressures greatly increases dehydration time 5 Valve off the vacuum pump stop the pump and record the instrument reading 6 After a 2 hour wait take another instrument reading If the reading has not changed dehydration is complete If the reading indicates vacuum loss repeat Steps 4 and 5 7 If the reading continues to chan...

Страница 52: ...readings on a field installed starter are unsat isfactory repeat the test at the motor with the power leads disconnected Satisfactory readings in this sec ond test indicate the fault is in the power leads NOTE Unit mounted starters do not have to be meg ohm tested 10 Tighten all wiring connections to the plugs on the ISM and CCM modules 11 On chillers with free standing starters inspect the power ...

Страница 53: ...ower Up the Controls and Check the Oil Heater Ensure that an oil level is visible in the compressor be fore energizing the controls A circuit breaker in the starter energizes the oil heater and the control circuit When first powered the CVC should display the default screen within a short period of time The oil heater is energized by powering the control cir cuit This should be done several hours ...

Страница 54: ...ables Configure SERVICE Tables Access the SERVICE tables depicted on the next page to modify or view the following to job site parameters PARAMETER TABLE Starter Type ISM_CONF Select 0 for full voltage 1 for reduced voltage or 2 for solid state variable frequency drive Motor Rated Line Voltage ISM_CONF Enter actual line voltage from power screen Volt Transformer Ratio ISM_CONF Enter ratio reduced ...

Страница 55: ...0 kPad Decrease P2 by 10 psid 70 kPad The differential pressure DP and temperature DT can be monitored during chiller operation by viewing ACTIVE DELTA P and ACTIVE DELTA T HEAT_EX screen Com paring SURGE AGBP DELTA T to active DETLA T will de termine when the SURGE PREVENTION function will oc cur The smaller the difference between the SURGE AGBP DELTA T and the ACTIVE DELTA T values the closer to...

Страница 56: ... fuse the compressor overloads an internal thermostat a com pressor contactor and a refrigerant high pressure cutout The high pressure cutout is factory set to open at 161 psig 1110 kPa and reset at 130 psig 896 kPa Ensure the water cooled condenser has been connected Loosen the compressor holddown bolts to allow free spring travel Open the compressor suction and discharge the service valves En su...

Страница 57: ...ss the terminate lockout function on the CONTROL TEST screen IMPORTANT Turn on the chilled water and con denser water pumps to prevent possible freezing 2 3 Open valve 4 on the pumpout unit and open valves 1a and 1b on the chiller cooler and condenser Fig 26 and 27 Slowly open valve 2 on the pumpout unit to equalize the pressure This process takes approximately 15 minutes 4 Once the pressures have...

Страница 58: ...he cooler or con denser Refrigerant overpressure may discharge through the relief valves and result in the loss of refrigerant charge 7 Access the CONTROL TEST screen Scroll down on the TERMINATE LOCKOUT option Press the SELECT to enable the chiller to start and answer YES to restart unit to operating mode The chiller is locked out at the factory in order to prevent accidental start up Dry Run to ...

Страница 59: ...tarters and disconnects sepa rate electrical sources pumps and cooling tower DESCRIBE CHILLER CYCLES Refrigerant motor cool ing lubrication and oil reclaim REVIEW MAINTENANCE Scheduled routine and extended shutdowns importance of a log sheet importance of water treatment and tube cleaning and importance of main taining a leak free chiller SAFETY DEVICES AND PROCEDURES Electrical dis connects relie...

Страница 60: ...he tubes and inspect the Schrader fittings on the waterside flow devices for fouling if necessary Check the cooler pressure on the CVC default screen and compare it to the original holding charge that was left in the chiller If after adjusting for ambient temperature changes any loss in pressure is indicated check for refrigerant leaks See Check Chiller Tightness section page 46 Recharge the chill...

Страница 61: ...TIME Refrigerant Water Refrigerant Water BEARING TEMP Oil Motor Press Temp Pressure Temp Press Temp Pressure Temp Press Diff Temp reser voir Level FLA In Out GPM In Out In Out GPM In Out Amperage or vane position REMARKS Indicate shutdowns on safety controls repairs made oil or refrigerant added or removed air exhausted and water drained from dehydrator Include amounts Fig 30 Refrigeration Log 61 ...

Страница 62: ...s the refrigerant line and opens the gage port to compres sor pressure 2 Ensure that the compressor holddown bolts have been loos ened to allow free spring travel 3 Open the refrigerant inlet valve on the pumpout compressor 4 Oil should be visible in the pumpout unit compressor sight glass under all operating conditions and during shut down If oil is low add oil as described under Optional Pumpout...

Страница 63: ...2 3 4 5 6 7 8 10 11 12 13 14 CONDITION C C C C C C C C C C l Turn off pumpout condenser water TRANSFER REFRIGERANT FROM CHILLER TO PUMPOUT STORAGE TANK 1 Equalize refrigerant pressure a Valve positions VALVE 1a 1b 2 3 4 5 6 7 8 10 11 12 13 14 CONDITION C C C C C b Slowly open valve 5 When the pressures are equal ized open liquid line valve 7 to allow liquid refrig erant to drain by gravity into th...

Страница 64: ...ressor to push the refrig erant out of the chiller condenser d When all liquid refrigerant is out of the chiller con denser close the cooler isolation valve 11 e Turn off the pumpout compressor 2 Evacuate the refrigerant gas from the chiller condenser vessel a Access the PUMPDOWN LOCKOUT function ac cessed from the CVC CONTROL TEST table to turn on the chiller water pumps Turn the chiller water pu...

Страница 65: ... section to perform a leak test HFC 134a should not be mixed with air or oxygen and pressurized for leak testing In general this refrigerant should not be present with high concentrations of air or oxygen above atmospheric pressures because the mix ture can undergo combustion REFRIGERANT TRACER Use an environmentally acceptable refrigerant as a tracer for leak test procedures TO PRESSURIZE WITH DR...

Страница 66: ...ing and tightening of connections Vacuum the cabinet to eliminate dust build up If the chiller control malfunctions refer to the Troubleshooting Guide section for control checks and adjustments Ensure power to the control center is off when cleaning and tightening connections inside the control panel Check Safety and Operating Controls Monthly To ensure chiller protection the automated Control Tes...

Страница 67: ...oler scavenging line Replace the filter once per year or more often if filter condition in dicates a need for more frequent replacement Change the filter by closing the filter isolation valves and slowly open ing the flare fitting with a wrench and back up wrench to relieve the pressure Change the strainers once every 5 years or whenever refrigerant is evacuated from the cooler Inspect Refrigerant...

Страница 68: ...monitor a treatment program Water must be within design flow limits clean and treated to ensure proper chiller performance and reduce the potential of tube damage due to corrosion scaling ero sion and algae Carrier assumes no responsibility for chiller damage resulting from untreated or improperly treated water Inspect the Starting Equipment Before work ing on any starter shut off the chiller and ...

Страница 69: ...red items such as chilled water resets over ride set points etc If an operating fault is detected an alarm message is gen erated and displayed on the CVC default screen A more detailed message along with a diagnostic message is also stored into the ALARM HISTORY table Checking Display Messages The first area to check when troubleshooting the 19XR is the CVC display If the alarm light is flashing c...

Страница 70: ...er vessels are at 0 psig 0 kPa or are open to atmospheric pressure the trans ducers can be calibrated for zero without removing the transducer from the vessel 3 Access the HEAT_EX screen and view the particular transducer reading the EVAPORATOR PRESSURE or CONDENSER PRESSURE parameter on the HEAT_EX screen To calibrate oil pressure or waterside flow de vice view the particular reading CHILLED WATE...

Страница 71: ...es A MANUAL STOP PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE REMEDY MANUALLY STOPPED PRESS CCN OR LOCAL TO START PIC II in OFF mode press CCN or LOCAL softkey to start unit TERMINATE PUMPDOWN MODE TO SELECT CCN OR LOCAL Enter the CONTROL TEST table and select TERMINATE LOCKOUT to unlock compressor SHUTDOWN IN PROGRESS COMPRESSOR UNLOADING Chiller unloading before shutdown due to soft stop fea...

Страница 72: ...g and accuracy Check for excessive starts Check configurable range in SETUP1 screen 104 PRESTART ALERT LOW REFRIGERANT TEMP 104 Evaporator Refrig Temp VALUE exceeded limit of LIMIT Check transducer wiring and accuracy Check for low chilled fluid supply temperatures Check refrigerant charge 105 PRESTART ALERT LOW OIL TEMPERATURE 105 Oil Sump Temp VALUE exceeded limit of LIMIT Check oil heater conta...

Страница 73: ...t of LIMIT Check refrigerant charge Check for low entering cooler temperatures 123 RUN CAPACITY LIMITED HIGH COMPRESSOR LIFT 123 Surge Prevention Override Lift Too High For Compressor Check for high condenser water temperatures or low suction temperature 124 RUN CAPACITY LIMITED MANUAL GUIDE VANE TARGET 124 Run Capacity Limited Manual Guide Vane Target Target guide vane point has been forced in MA...

Страница 74: ... inlet guide vane actuator 209 PROTECTIVE LIMIT LINE PHASE LOSS 209 Line Phase Loss Check ISM Fault History to Identify Phase Check transformers to ISM Check power distribution bus Consult power company 210 PROTECTIVE LIMIT LINE VOLTAGE DROPOUT 210 Single Cycle Line Voltage Dropout 211 PROTECTIVE LIMIT HIGH LINE VOLTAGE 211 High Average Line Voltage VALUE Check transformers to ISM Check distributi...

Страница 75: ...nsors wiring and accuracy Check motor cooling line for proper operation or restrictions Check for excessive starts within a short time span 234 PROTECTIVE LIMIT HIGH BEARING TEMPERATURE 234 Comp Thrust Bearing Temp VALUE exceeded limit of LIMIT Check oil heater for proper operation Check for low oil level partially closed oil supply valves clogged oil filters etc Check the sensor wiring and accura...

Страница 76: ...R TEMP 141 Sensor Fault Check Entering Cond Water Sensor Check sensor resistance or voltage drop Check for proper wiring 142 LOW OIL PRESSURE ALERT CHECK OIL FILTER 142 Low Oil Pressure Alert Check Oil Filter Check for partially or closed shut off valves Check oil filter Check oil pump and power supply Check oil level Check for foaming oil at start up Check transducer wiring and accuracy 143 AUTOR...

Страница 77: ...es Check for condenser refrigerant leaks Check fluid temperature Check sensor wiring and accuracy Place the chiller in PUMPDOWN mode if the vessel is evacuated 155 OPTION SENSOR FAULT REMOTE RESET SENSOR 155 Sensor Fault Option Disabled Remote Reset Sensor Check sensor resistance or voltage drop Check for proper wiring 156 OPTION SENSOR FAULT AUTO CHILLED WATER RESET 156 Sensor Fault Option Disabl...

Страница 78: ...906 88 2 593 3 814 89 2 563 3 726 90 2 533 3 640 91 2 505 3 556 92 2 476 3 474 93 2 447 3 395 94 2 417 3 318 95 2 388 3 243 96 2 360 3 170 97 2 332 3 099 98 2 305 3 031 99 2 277 2 964 100 2 251 2 898 101 2 217 2 835 102 2 189 2 773 103 2 162 2 713 104 2 136 2 655 105 2 107 2 597 106 2 080 2 542 107 2 053 2 488 108 2 028 2 436 109 2 001 2 385 110 1 973 2 335 111 1 946 2 286 112 1 919 2 239 113 1 89...

Страница 79: ... 5 971 22 3 076 5 710 23 3 023 5 461 24 2 970 5 225 25 2 917 5 000 26 2 864 4 786 27 2 810 4 583 28 2 757 4 389 29 2 704 4 204 30 2 651 4 028 31 2 598 3 861 32 2 545 3 701 33 2 493 3 549 34 2 441 3 404 35 2 389 3 266 36 2 337 3 134 37 2 286 3 008 38 2 236 2 888 39 2 186 2 773 40 2 137 2 663 41 2 087 2 559 42 2 039 2 459 43 1 991 2 363 44 1 944 2 272 TEMPERATURE VOLTAGE RESISTANCE C DROP V Ohms 45 ...

Страница 80: ... Notes on Module Operation 1 The chiller operator monitors and modifies configura tions in the microprocessor by using the 4 softkeys and the CVC Communications between the CVC and the CCM is accomplished through the SIO Sensor Input Output bus which is a phone cable The communication be tween the CCM and ISM is accomplished through the sen sor bus which is a 3 wire cable 2 If a green LED is on co...

Страница 81: ... back on 7 The CVC now automatically attaches to the local net work device 8 Access the MAINSTAT table and highlight the TOTAL COMPRESSOR STARTS parameter Press the SELECT softkey Increase or decrease the value to match the starts value recorded in Step 3 Press the ENTER softkey when you reach the correct value Now move the highlight bar to the COMPRESSOR ONTIME parameter Press the SELECT softkey ...

Страница 82: ...J2 SW2 V I INPUTS J5 SIO J7 ANALOG OUT J8 J11 DISCRETE OUTPUTS J12 DISCRETE OUTPUTS J1 24 VAC SIO J6 Fig 37 Chiller Control Module CCM INTEGRATED STARTER MODULE J9 J8 J7 COM STAT J1 FUSE J2 J3 1 J3 2 J3 3 J4 J5 J6 Fig 38 Integrated Starter Module ISM 82 ...

Страница 83: ...is loose apply a thin coat of either silicon based thermal joint com pound or a joint compound for aluminum or copper wire connections to the contact surfaces of the replacement SCR This allows for improved heat dissipation and electrical conductivity 3 Place the SCR between the roll pins on the heatsink as semblies so the roll pins fit into the small holes in each side of the SCR NOTE Ensure the ...

Страница 84: ...400 115 128 51 485 556 7 262 7 490 840 400 126 137 52 519 602 7 417 7 683 900 400 133 136 55 431 509 7 559 7 980 870 490 127 142 56 485 556 7 839 8 214 940 490 139 152 57 519 602 8 016 8 434 980 490 147 162 60 557 648 8 270 8 286 940 420 144 159 61 599 695 8 462 8 483 980 420 153 168 62 633 741 8 617 8 676 1020 420 160 177 65 557 648 8 943 9 204 1020 510 160 176 66 599 695 9 161 9 428 1060 510 169...

Страница 85: ...509 3428 3619 395 222 481 536 56 485 556 3555 3725 426 222 527 575 57 519 602 3635 3825 446 222 557 613 60 557 648 3751 3758 426 190 546 601 61 599 695 3838 3847 444 190 578 636 62 633 741 3908 3935 462 190 604 669 65 557 648 4056 4174 462 231 605 668 66 599 695 4155 4276 481 231 641 707 67 633 741 4235 4376 494 231 671 745 70 644 781 5622 5959 553 354 848 791 71 726 870 5814 6153 608 354 919 867 ...

Страница 86: ... 626 526 FRAME 5 2 PASS 300 690 69 2068 313 263 FRAME 6 1 AND 3 PASS 300 1650 162 2068 748 612 FRAME 6 2 PASS 300 825 81 2068 374 306 FRAME 7 1 AND 3 PASS 300 3100 326 2068 1406 1234 FRAME 7 2 PASS 300 1830 163 2068 830 617 FRAME 8 1 AND 3 PASS 300 2745 405 2068 1245 1533 FRAME 8 2 PASS 300 1475 203 2068 766 768 Add to heat exchanger data for total weights or volumes NOTES 1 Weight adder shown is ...

Страница 87: ...149 143 125 CQ 1455 1479 329 316 274 660 671 149 152 125 DB 1665 1725 361 391 236 755 782 164 177 107 DC 1681 1737 391 404 236 762 788 177 183 107 DD 1977 2069 536 596 318 897 938 243 248 144 DE 2018 2089 550 550 318 915 948 249 248 144 DF 2100 2139 575 567 318 952 970 261 257 144 DG 2187 2153 599 599 318 992 977 272 272 144 DH 2203 2207 604 604 318 999 1001 274 274 144 DJ 2228 2305 614 614 318 10...

Страница 88: ...ass Cover 300 psig 621 656 795 838 901 952 NIH MWB End Cover 300 psig 569 569 713 713 833 833 HEAT EXCHANGER WATERBOX DESCRIPTION FRAME 7 COOLER FRAME 7 CONDENSER Standard Nozzles Flanged Standard Nozzles Flanged COOLER CONDENSER NIH 1 Pass Cover 150 psig 1392 1469 1205 1282 NIH 2 Pass Cover 150 psig 1345 1461 1163 1279 NIH 3 Pass Cover 150 psig 1434 1471 1222 1280 NIH MWB End Cover 150 psig 1022 ...

Страница 89: ...98 383 451 NIH 3 Pass Cover 2068 kPa 282 298 361 380 409 432 NIH MWB End Cover 2068 kPa 258 258 323 323 378 378 HEAT EXCHANGER WATERBOX DESCRIPTION FRAME 7 COOLER FRAME 7 CONDENSER Standard Nozzles Flanged Standard Nozzles Flanged COOLER CONDENSER NIH 1 Pass Cover 1034 kPa 631 666 547 581 NIH 2 Pass Cover 1034 kPa 610 663 528 580 NIH 3 Pass Cover 1034 kPa 650 667 554 580 NIH MWB End Cover 1034 kPa...

Страница 90: ...7 28 8 LEGEND LRA Locked Rotor Amps RLA Rated Load Amps Table 16 Additional Miscellaneous Weights ITEM Lb Kg CONTROL CABINET 30 14 UNIT MOUNTED STARTER 500 227 OPTIONAL ISOLATION VALVES 115 52 Table 17 Motor Voltage Code MOTOR VOLTAGE CODE Code Volts Frequency 60 200 60 61 230 60 62 380 60 63 416 60 64 460 60 65 575 60 66 2400 60 67 3300 60 68 4160 60 69 6900 60 50 230 50 51 346 50 52 400 50 53 30...

Страница 91: ...Shaft Seal Nut 25 34 7 Motor Terminals High Voltage Insulator 2 4 2 7 5 4 Packing Nut 5 6 8 Brass Jam Nut 10 13 6 LEGEND N m Newton meters Not shown NOTES 1 All clearances for cylindrical surfaces are diametrical 2 Dimensions are with rotor in thrust position 3 Dimensions shown are in inches 4 Impeller spacing should be performed in accordance with most recent Carrier Service Bulletin on impeller ...

Страница 92: ...0050 0040 0050 0040 0053 0043 0065 0055 C 0115 0055 0115 0080 0100 0050 0010 0060 D 0190 0040 022 012 027 017 0350 0250 E 002 0005 0020 0005 0029 0014 0019 0005 F 0050 0040 0050 0040 0048 0038 0062 0052 G 157 0257 157 0257 0340 0240 0530 0430 NOTE All clearances for cylindrical surfaces are diametrical Fig 40 Compressor Fits and Clearances cont 92 ...

Страница 93: ...M T Requirement TB Terminal Board Denotes Oil Pump Terminal Denotes Power Panel Terminal Denotes Motor Starter Panel Conn Denotes Component Terminal Wire Splice Denotes Conductor Male Female Connector Option Wiring LEGEND AUX Auxiliary BRG Bearing C Contactor CB Circuit Breaker CCM Chiller Control Module CCN Carrier Comfort Network COMP R Compressor COND Condenser CVC Chiller Visual Controller DIS...

Страница 94: ...er DISCH Discharge ENT Entering EVAP Evaporator EXT External LEGEND cont FR Frame GV Guide Vane HGBP Hot Gas Bypass HT EXCHD Heat Exchanger ISM Integrated Starter Module L Main Supply Power LVG Leaving N O Normally Open PRESS Pressure REQM T Requirement TB Terminal Board Denotes Oil Pump Terminal Denotes Power Panel Terminal Denotes Motor Starter Panel Conn Denotes Component Terminal Wire Splice D...

Страница 95: ...ctuator HGBP Hot Gas Bypass HT EXCHD Heat Exchanger ISM Integrated Starter Module L Main Power Supply N O Normally Open PRESS Pressure REQMT Requirement T Transformer TB Terminal Board Denotes Oil Pump Terminal Denotes Power Panel Terminal Denotes Mach Control Panel Conn Denotes Motor Starter Panel Conn Denotes Component Terminal Wire Splice Denotes Conductor Male Female Connector Option Wiring LE...

Страница 96: ... wires remain energized when unit main disconnect is off Optional features are indicated by bold dashed lines Dry Contact Field Connection For connection diagram refer to 261143 D4 LEGEND AUX Auxiliary C Contactor CB Circuit Breaker CR Control Relay CT Current Transformer DS Disconnect Switch FU Fuse G Ground HPR Horsepower ISM Integrated Starter Module L Main Supply Power LL Control Power Supply ...

Страница 97: ...ltage of 575 vac not shown 4 K3 relay shown in deenergized state K3 contact will close when power is applied K3 contact will open on stop command or system fault LEGEND AUX Auxiliary BR Bridge Rectifier CB Circuit Breaker COMM Communication COND Condenser CPU Central Processing Unit CVC Chiler Visual Controller CT Current Transformer EVAP Evaporator FU Fuse G Ground L Main Supply Power LL Control ...

Страница 98: ... HPR Horsepower ISM Intergrated Starter Module L Main Power Supply LL Control Power Supply LVG Leaving M Contactor MTR Motor PRESS Pressure PT Power Transformer ST Shunt Trip STAT Status TB Terminal Block TRANS Transition VFD Variable Frequency Drive VL Wire Label Starter Vendor Power Wiring Starter Vendor Control Wiring Field Installed Power Wiring supplied by others Field Installed Control Wirin...

Страница 99: ... HPR Horsepower ISM Intergrated Starter Module L Main Power Supply LL Control Power Supply LVG Leaving M Contactor MTR Motor PRESS Pressure PT Power Transformer ST Shunt Trip STAT Status TB Terminal Block TRANS Transition VFD Variable Frequency Drive VL Wire Label Starter Vendor Power Wiring Starter Vendor Control Wiring Field Installed Power Wiring supplied by others Field Installed Control Wirin...

Страница 100: ...Operation 60 Motor and Oil Refrigeration Cooling Cycle 7 Motor Compressor 5 Motor Rotation Check 58 Notes on Module Operation 80 Oil Changes 67 Oil Charge 53 Oil Cooler 36 Oil Pressure and Compressor Stop Check 59 Oil Reclaim Filter 67 Oil Reclaim System 8 Oil Specification 67 Oil Sump Temperature Control 35 Open Oil Circuit Valves 46 Operating Instructions 59 Operating the Optional Pumpout Unit 6...

Страница 101: ...Leak 65 Tighten All Gasketed Joints and Guide Vane Packing 46 Tower Fan Relay Low and High 37 Trim Refrigerant Charge 65 Troubleshooting Guide 69 Unit Mounted Solid State Starter 9 Unit Mounted Wye Delta Starter 10 Using the Optional Storage Tank and Pumpout System 46 Water Brine Reset 37 Water Leaks 68 Water Piping Inspect 51 Water Treatment 68 Weekly Maintenance 66 Wiring Inspect 51 101 ...

Страница 102: ......

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Страница 104: ...anufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 Tab 5a PC 211 Catalog No 531 974 Printed in U S A Form 19XR 3SS Pg 104 6 98 Replaces New ...

Страница 105: ...NSTRUCTIONS JOB DATA REQUIRED 1 Machine Installation Instructions Yes M No M 2 Machine Assembly Wiring and Piping Diagrams Yes M No M 3 Starting Equipment Details and Wiring Diagrams Yes M No M 4 Applicable Design Data see above Yes M No M 5 Diagrams and Instructions for Special Controls Yes M No M INITIAL MACHINE PRESSURE YES NO Was Machine Tight If Not Were Leaks Corrected Was Machine Dehydrated...

Страница 106: ...se safeties shut down machine Condenser Water Flow Yes M No M Chilled Water Flow Yes M No M Pump Interlocks Yes M No M INITIAL START Line Up All Valves in Accordance With Instruction Manual Start Water Pumps and Establish Water Flow Oil Level OK and Oil Temperature OK Check Oil Pump Rotation Pressure Check Compressor Motor Rotation Motor End Sight Glass and Record Clockwise Restart Compressor Brin...

Страница 107: ...mand Limit 40 to 100 100 LCW Setpoint 10 to 120 DEG F 50 0 ECW Setpoint 15 to 120 DEG F 60 0 Ice Build Setpoint 15 to 60 DEG F 40 0 Tower Fan High Setpoint 55 to 105 DEG F 75 CVC Software Version Number CVC Controller Identification BUS ADDRESS CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE CL 3 ...

Страница 108: ... TIME SCHEDULE CONFIGURATION SHEET OCCPC02S Day Flag Occupied Unoccupied M T W T F S S H Time Time Period 1 Period 2 Period 3 Period 4 Period 5 Period 6 Period 7 Period 8 NOTE Default setting is UNOCCUPIED 24 hours day 19XR PIC II TIME SCHEDULE CONFIGURATION SHEET OCCPC03S Day Flag Occupied Unoccupied M T W T F S S H Time Time Period 1 Period 2 Period 3 Period 4 Period 5 Period 6 Period 7 Period 8...

Страница 109: ...AMPS 200 Motor Locked Rotor Trip 100 to 60000 AMPS 1000 Locked Rotor Start Delay 1 to 10 cycles 5 Starter LRA Rating 100 to 60000 AMPS 2000 Motor Current CT Ratio 1 10 to 1000 100 Current Imbalance 5 to 40 15 Current Imbalance Time 1 to 10 SEC 5 3 Grnd Fault CT s 1 No 0 1 NO YES YES Ground Fault CT Ratio 1 150 150 Ground Fault Current 1 to 25 AMPS 15 Ground Fault Start Delay 1 to 20 cycles 10 Grou...

Страница 110: ...P Delta T1 0 5 to 15 F 1 5 Surge HGBP Delta P1 30 to 170 PSI 50 Full Load Point T2 P2 Surge HGBP Delta T2 0 5 to 15 F 10 Surge HGBP Delta P2 50 to 170 PSI 85 Surge HGBP Deadband 0 5 to 3 F 1 Surge Protection Surge Delta Amps 5 to 15 10 Surge Time Period 7 to 10 MIN 8 Ice Build Control Ice Build Option 0 1 DSABLE ENABLE DSABLE Ice Build Termination 0 Temp 1 Contacts 2 Both 0 to 2 0 Ice Build Recycl...

Страница 111: ...g Override Delta T 2 0 to 5 0 F 3 Condenser Freeze Point 20 to 35 DEG F 34 Evap Flow Delta P Cutout 0 5 to 50 0 PSI 5 0 Cond Flow Delta P Cutout 0 5 to 50 0 PSI 5 0 Water Flow Verify Time 0 5 to 5 MIN 5 Oil Press Verify Time 15 to 300 SEC 40 Recycle Control Recycle Restart Delta T 2 0 to 10 0 DEG F 5 Recycle Shutdown Delta 0 t to 4 0 DEG F 1 SPARE ALERT ALARM ENABLE Disable 0 Lo 1 3 Hi 2 4 Spare T...

Страница 112: ...ntrol Diffuser Option 0 to 1 DSABLE ENABLE DSABLE Guide Vane 25 Load Pt 0 to 78 25 Diffuser 25 Load Pt 0 to 100 0 Guide Vane 50 Load Pt 0 to 78 50 Diffuser 50 Load Pt 0 to 100 0 Guide Vane 75 Load Pt 0 to 78 75 Diffuser 75 Load Pt 0 to 100 0 Diffuser Full Span mA 15 to 22 mA 18 VFD Speed Control VFD Option 0 1 DSABLE ENABLE DSABLE VFD Gain 0 1 to 1 5 0 75 VFD Increase Step 1 to 5 2 VFD Minimum Spe...

Страница 113: ... 0 1 DSABLE ENABLE DSABLE Common Sensor Option 0 1 DSABLE ENABLE DSABLE LAG Percent Capacity 25 to 75 50 LAG Address 1 to 236 92 LAG START Timer 2 to 60 MIN 10 LAG STOP Timer 2 to 60 MIN 10 PRESTART FAULT Timer 2 to 30 MIN 5 STANDBY Chiller Option 0 1 DSABLE ENABLE DSABLE STANDBY Percent Capacity 25 to 75 50 STANDBY Address 1 to 236 93 CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE CL 9 ...

Страница 114: ...0 to 9999 kW 156 Demand Watts Interval 5 to 60 MIN 15 19XR PIC II TEMP_CTL TABLE CONFIGURAITON SHEET DESCRIPTION RANGE UNITS DEFAULT VALUE Control Point ECW Control Option 0 1 DSABLE ENABLE DSABLE Temp Pulldown Deg Min 2 to 10 F 3 Temperature Reset RESET TYPE 1 Degrees Reset At 20 mA 30 to 30 F 10 RESET TYPE 2 Remote Temp No Reset 40 to 245 DEG F 85 Remote Temp Full Reset 40 to 245 DEG F 65 Degree...

Страница 115: ...light Savings Start Month 1 to 12 4 Start Day of Week 1 to 7 7 Start Week 1 to 5 3 Start Time 00 00 to 24 00 HH MM 02 00 Start Advance 0 to 360 MIN 60 Stop Month 1 to 12 10 Stop Day of Week 1 to 7 7 Stop Week 1 to 5 3 Stop Time 00 00 to 24 00 02 00 Stop Back 0 to 360 MIN 60 CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE CL 11 ...

Страница 116: ...nufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 Tab 5a PC 211 Catalog No 531 974 Printed in U S A Form 19XR 3SS Pg CL 12 6 98 Replaces New ...

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