Carrier XRV Spécifications Page 10
- Page / 190
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
10
STARTING EQUIPMENT
All 19XRV units are equipped with a VFD to operate the
centrifugal hermetic compressor motor. A power panel controls
the oil pump, and various auxiliary equipment. The VFD and
power panel are the main field wiring interfaces for the install-
ing contractor. The VFD is mounted directly on the chiller.
NOTE: This publication provides start-up and service informa-
tion for the LiquiFlo™ 2.0 (LF2) VFDs. For information on
Std Tier VFDs, refer to associated Start-Up and Service
Instructions for the Rockwell PowerFlex 755 VFD or the
Eaton LCX 9000 VFD.
Three separate circuit breakers are inside the VFD. Circuit
breaker CB1 is the VFD circuit breaker. The disconnect switch
on the VFD front cover is connected to this breaker. Circuit
breaker CB1 supplies power to the VFD.
Circuit breaker CB2 supplies 115-v power to the oil pump
control panel, oil heater, and portions of the VFD controls.
Unit-Mounted VFD — The 19XRV chiller is equipped
with a variable frequency drive motor controller mounted on
the condenser. See Fig. 5-7. This VFD is used with low voltage
motors between 380 and 460 vac. It reduces the starting current
inrush by controlling the voltage and frequency to the compres-
sor motor. Once the motor has accelerated to minimum speed,
the PIC III modulates the compressor speed and guide vane
position to control chilled water temperature. The VFD is
further explained in the Controls section and Troubleshooting
Guide section, pages 15 and 89.
Operational parameters and fault codes are displayed rela-
tive to the drive. Refer to specific drive literature along with
troubleshooting sections. The display is also the interface for
entering specific chiller operational parameters. These parame-
ters have been preprogrammed at the factory. An adhesive
backed label on the inside of the drive has been provided for
verification of the specific job parameters. See Initial Start-Up
Checklist section for details.
ISOLATION
VALVE
SIGHT
GLASS
FILTER
ISOLATION
VALVE
OIL SKIMMER
LINE
FILTEREDUCTOR
OIL
PUMP
TXV BULB PRESSURE
TRANSDUCER
ISOLATION
VALVES
OIL
COOLER
OIL PUMP
MOTOR
OIL
HEATER
MOTOR
COOLING LINE
LABYRINTH
GAS LINE
FWD MOTOR
BEARING
OIL SUPPLY TO
FORWARD HIGH
SPEED BEARING
SIGHT
GLASS
FLOW
OIL
FILTER
REAR MOTOR
BEARING
STRAINER
Fig. 4 — Lubrication System
a19-1965
WARNING
The main circuit breaker (CB1) on the front of the VFD
disconnects the main VFD current only. Power is still ener-
gized for the other circuits. Two more circuit breakers
inside the VFD must be turned off to disconnect power to
the oil pump, PIC III controls, and oil heater.
WARNING
Do not touch the power wiring or motor terminals while
voltage is present, or serious injury will result.
- 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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