Carrier XRV Spécifications Page 97
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
97
Table 16 — Alarm and Alert Messages (cont)
I. CHILLER PROTECTIVE LIMIT FAULTS (cont)
*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or
alarm condition. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped.
ICVC FAULT
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
233 PROTECTIVE LIMIT
HIGH MOTOR
TEMPERATURE
233Comp Motor Winding
Temp [VALUE] exceeded
limit of [LIMIT]*.
Check motor sensors wiring and accuracy.
Check motor cooling line and spray nozzle for
proper operation, or restrictions.
Check for excessive starts within a short time
span.
234 PROTECTIVE LIMIT
HIGH BEARING
TEMPERATURE
234Comp Thrust Brg Temp
[VALUE] exceeded limit of
[LIMIT]*.
Check oil heater for proper operation.
Check for low oil level, partially closed oil supply
valves, or clogged oil filter.
Check oil cooler refrigerant thermal expansion
valves.
Confirm that TXV bulb is secured in place and
insulated.
Check for sensor wiring and accuracy.
This fault can result from extended operation at low
load with low water flow to the evaporator or
condenser.
235 PROTECTIVE LIMIT
HIGH CONDENSER
PRESSURE
235Condenser Pressure
[VALUE] exceeded limit of
[LIMIT]*.
Check for high condenser water temperatures, low
water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables.
Check transducer wiring and accuracy.
236 PROTECTIVE LIMIT
COMPRESS SURGE/
LOW SPEED
236Compressor Surge:
Check condenser water temp
and flow.
Check for high condenser water temperatures, low
water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables.
Check surge prevention parameters in OPTIONS
screen. Increase VFD Increase Step in SETUP2.
Check VFD Minimum Speed in SETUP2 screen.
237 PROTECTIVE LIMIT
SPARE SAFETY
DEVICE
237Spare Safety Device.
Spare safety input has tripped or factory installed
jumper is not present on Terminal
Block 1 (TB1).
238 PROTECTIVE LIMIT
EXCESSIVE COMPR
SURGE
238Compressor Surge:
Check condenser water temp
and flow.
Check for high condenser water temperatures, low
water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables.
Check surge prevention parameters in OPTIONS
screen.
Check cooling tower control settings and perfor-
mance to design/selection temperatures across the
entire operating range of the chiller.
Check cooler approach and water flow.
239 PROTECTIVE LIMIT
TRANSDUCER
VOLTAGE FAULT
239Transducer Voltage Ref
[VALUE] exceeded limit of
[LIMIT]*.
Check that CCM transducer voltage reference is
between 4.5 v and 5.5 v.
Check that pressure transducers are not shorted to
ground. This fault is normally declared the first time
an ICVC is powered up if it was downloaded with
software when it was not connected to a CCM.
Call Carrier Service.
240 PROTECTIVE LIMIT
LOW DISCHARGE
SUPERHEAT
240Check for Oil in Or
Overcharge of Refrigerant.
Check for oil loss or excessive refrigerant. If oil level
is low, refrigerant charge may be too low resulting in
ineffective oil reclaim. Excessive refrigerant charge
may cause liquid carryover into compressor.
Check calibration of evaporator pressure and con-
denser pressure sensors.
Check calibration of compressor discharge temper-
ature sensor.
241 PROTECTIVE LIMIT
RECTIFIER
OVERCURRENT
241Rectifier Overcurrent
Fault: Check VFD Status.
Check for high water temperatures or changes in
water flow rates.
242
LOSS OF
COMMUNICATION
WITH CCM MODULE
242Loss of Communica-
tion With CCM, Check
Comm. Connectors.
Check wiring and control power to CCM.
Confirm that all CCM SW1 switches are in the
“OFF” position.
243
POTENTIAL
FREEZE-UP
EVAP PRESS/TEMP
TOO LOW
243Evaporator Refrig
Temp [VALUE] exceeded
limit of [LIMIT]*.
Check for proper refrigerant charge.
Check float valve operation.
Check for proper fluid flow and temperature.
Confirm that condenser water enters bottom row
of condenser tubes first.
Check Evaporator Refrigerant Temperature
sensor.
Check for division plate gasket bypass.
Check for fouled tubes.
244
POTENTIAL
FREEZE-UP
COND PRESS/TEMP
TOO LOW
244Condenser Refrig
Temp [VALUE] exceeded
limit of [LIMIT]*.
Condenser water too cold or chiller shut down with
brine below 32 F in cooler so equalization tempera-
ture in chiller approached 32 F.
Check condenser pressure transducer.
Check refrigerant charge.
- EVERGREEN 1
- 50/60 Hz 1
- CONTENTS 2
- CONTENTS (cont) 3
- INTRODUCTION 4
- CHILLER FAMILIARIZATION 5
- (Fig. 1 and 2) 5
- REAR VIEW 7
- FRONT VIEW 7
- REFRIGERATION CYCLE 8
- MOTOR AND LUBRICATING OIL 8
- COOLING CYCLE 8
- STARTING EQUIPMENT 10
- OPTIONAL 11
- 442A AND 608A VFDs 12
- 900A AND 1200A VFDs 12
- CONTROLS 15
- Definitions 15
- Fig. 10 — Control Panel 17
- Fig. 11 — Power Panel 17
- 55.1 44.1 40.7 20
- 85.0 95.0 98.1 20
- 21.8 132.9 93 20
- Table 4 — ICVC Display Data 27
- 0.1-3.0 SP_HIGH 28
- 0.1-3.0 SP_HIGH 1.0 37
- PIC III System Functions 40
- ECW-10 sec 41
- Error, Gain = 1 41
- Error, Gain = 3 41
- START-UP/SHUTDOWN/ 57
- RECYCLE SEQUENCE (Fig. 27) 57
- Local Start-Up — 57
- Shaft Packing — 60
- LIQUID LINE 63
- Temperature (F) 64
- Temperature (C) 64
- • Surge/ HGBP Deadband = 1 69
- ΔT increase 70
- Delta Tsat 71
- ALARM CONTROL 72
- ALARM ROUTING 72
- LEGEND TO TABLES 16A-16J 91
- E. START-UP IN PROGRESS 92
- F. NORMAL RUN 93
- G. NORMAL RUN WITH OVERRIDES 93
- H. OUT-OF-RANGE SENSOR 94
- J. CHILLER ALERTS 99
- J. CHILLER ALERTS (cont) 100
- Control Modules 107
- Notes on Module Operation 107
- RECTIFIER LED 109
- INVERTER LED 109
- Table 30 — Motor Voltage Code 129
- COMPRESSOR, TRANSMISSION AREA 130
- LOW SPEED SHAFT THRUST DISK 131
- LEGEND FOR FIG. 53-58 133
- SEE NOTE 134
- HOT GAS BYPASS 135
- HOT GAS BYPASS OPTION FOR 136
- NOTE: MOTOR OVERLOAD IS 143
- FACTORY PRE-SET 143
- DO NOT ADJUST 143
- COMBINED I/O 144
- TB1 − LF2 146
- TB3 − LF2 146
- VFD (cont) 147
- LEGEND FOR FIG. 60 148
- NOTES FOR FIG. 60 149
- NOTE 3.6 150
- LEGEND FOR FIG. 61 152
- NOTES FOR FIG. 61 153
- 19XRV CHILLERS 154
- STATUS VPF_STAT 163
- APPENDIX B — LEAD/LAG WIRING 165
- 19XRV Weekly Maintenance Log 168
- 19XRV Maintenance Log 169
- 19XRV Seasonal Shutdown Log 170
- 10's 171
- 1's 171
- — The LEDs indicate if the 175
- Table G — Network Points List 176
- INITIAL START-UP CHECKLIST 179
- No 180
- *If yes, determine cause 180
- DRAWINGS) 180
- 0.1 to 3.0 184
- CCN LOCAL RESET MENU 190
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