York eco2 YCAS0425EB Installation Operation & Maintenance page 5

SECTION 10 MAINTENANCE
General Requirements ................................................................................................................... 145
Daily Maintenance .......................................................................................................................... 145
Scheduled Maintenance ................................................................................................................. 145
Chiller / Compressor Operating Log ............................................................................................... 146
Maintenance Requirements ............................................................................................................ 147
General Periodic Maintenance Checks - Standard Units ............................................................. 148
SPARE PARTS .................................................................................................................................... 149
Recommended Spares ................................................................................................................... 149
Recommended Compressor Oils ................................................................................................... 149
Associated Drawings ...................................................................................................................... 149
TROUBLESHOOTING ......................................................................................................................... 150
Competent Person's Troubleshooting Guide ................................................................................. 150
Sensor Calibration Charts .............................................................................................................. 152
Limited Warranty ............................................................................................................................. 153
Temperature Conversion Chart ...................................................................................................... 154
FIG. 1 - Component Locations ................................ 15
FIG. 2 - Screw Compressor .................................... 16
FIG. 3 - Unit Rigging ............................................... 28
FIG. 4 - Lifting Lugs ................................................. 28
FIG. 5 - Pipework Arrangement .............................. 31
FIG. 6 - Victaulic Groove ......................................... 32
FIG. 7 - Flange Attachments ................................... 32
FIG. 8 - Panel Layouts ............................................ 35
FIG. 9 - Option Panel Section ................................. 36
FIG. 10 - Logic Section Layout ................................. 37
FIG. 11 - Logic Section Layout with Control Panel
Layout ........................................................ 38
FIG. 12 - Customer Connections .............................. 39
FIG. 13 - Customer Connections .............................. 40
FIG. 14 - Flow Rate and Pressure Drop Charts ........ 45
FIG. 15 - Glycol Correction Factors .......................... 46
FIG. 16 - Multiple Point Power Supply Connection -
Standard Unit ............................................. 56
FIG. 17 - Optional Single-Point Power Supply Connec-
tion with Individual System Circuit Breakers ..56
FIG. 18 - Optional Single-Point Power Supply Connec-
tion with Field Supply Circuit Protection .... 57
FIG. 19 - Optional Single-Point Power Supply Connection
to Factory Circuit Breaker .......................... 57
FIG. 20 - Elementary Diagram:
Across-The-Line Start ................................ 58
FIG. 21 - Power Panel (Front Inside View)
Across-The-Line Start ................................ 62
FIG. 22 - Electronic Panel (Front Inside View)
Across-The-Line Start ................................ 63
FIG. 23 - Elementary Diagram: Wye-Delta Start ...... 64
FIG. 24 - Power Panel (Front Inside View)
Wye-Delta Start ......................................... 68
TABLE 1 - Motor Protector Dip Switch Settings ...................................................................................... 20
TABLE 2 - Condenser Fan Control and Fan Contactor Data for DXST Units with 4 Fans System ...... 144
TABLE 3 - Condenser Fan Control and Fan Contactor Data for DXST Units with 5 Fans System ...... 144
YORK INTERNATIONAL
TABLE OF CONTENTS
LIST OF FIGURES
FIG. 25 - Electronic Panel (Front Inside View)
FIG. 26 - Connection Diagram .................................. 70
FIG. 27 - Detail "A" .................................................... 71
FIG. 28 - Connection Diagram System Wiring .......... 72
FIG. 29 - Sensor Connection .................................... 72
FIG. 30 - Compressor (Systems 1 & 2) ..................... 72
FIG. 31 - Compressor Terminal Boxes ...................... 73
FIG. 32 - Detail "B" .................................................... 74
FIG. 33 - Detail "C" .................................................... 75
FIG. 34 - Isolator Details ........................................... 83
FIG. 35 - Isolator Details ........................................... 84
FIG. 36 - Isolator Locations ....................................... 85
FIG. 37 - Clearances ................................................. 86
FIG. 38 - Refrigerant Flow Diagram .......................... 87
FIG. 39 - Process & Instrumentation Diagram .......... 88
FIG. 40 - Component Locations ................................ 89
FIG. 41 - Compressor Components .......................... 90
FIG. 42 - Compressor Components .......................... 91
FIG. 43 - Compressor Components .......................... 92
FIG. 44 - Compressor Components .......................... 93
FIG. 45 - Compressor Components .......................... 94
FIG. 46 - Compressor Components .......................... 95
FIG. 47 - Motor Protection Module .......................... 107
FIG. 48 - Component Layout .................................. 107
FIG. 49 - Logic Section Layout ............................... 108
FIG. 50 - Suction Pressure Cutout ........................... 116
FIG. 51 - Enlarged Photograph of Dip Switches
FIG. 52 - Condenser Fan Layout for DXST
FIG. 53 - Operating Log .......................................... 146
LIST OF TABLES
Wye-Delta Start ......................................... 69
on Microprocessor Board ......................... 122
2-Compressor Units ................................. 144
FORM 201.18-NM8
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