Carrier AquaEdge 19DV series - Page 58

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Fig. 50 — 19DV Input Output Board (IOB) Schematic

Main Page

Safety Considerations1
Table of Contents2
Introduction3
Abbreviations and Explanations4
Chiller Familiarization4
Chiller Information Nameplate4
System Components4
Evaporator4
Condenser4
Economizer4
Motor-Compressor4
Purge Unit4
Variable Frequency Drive (VFD)4
Refrigeration Cycle7
Refrigerant Lubrication Cycle8
Summary8
Bearings8
Inhibitor Reclaim System9
Motor Cooling System9
VFD Cooling System9
Vfd9
Purge System9
Controls12
Definitions12
General12
PIC5 System Components12
Start-Up/Shutdown12
Recycle Sequence12
Local Start/Stop Control12
Lubrication Control13
Shutdown15
Before Initial Start-Up15
Job Data Required15
Equipment Required15
Remove Shipping Packaging15
Tighten All Gasketed Joints15
Check Chiller Tightness15
Refrigerant Tracer18
Leak Test Chiller18
Standing Vacuum Test18
Chiller Dehydration20
Inspect Water Piping20
Check Safety Valves20
Inspect Wiring20
Check Purge Compressor Operation21
Checking the Installation22
Inspect Wiring22
Ground Fault Troubleshooting22
Carrier Comfort Network23
Inhibitor Charge23
Interface23
Software Configuration24
Charge Unit with Refrigerant24
Field Set up and Verification31
Perform a Controls Test31
Quick Test)31
Initial Start-Up33
Preparation33
Check Motor Rotation33
Check Refrigerant Lube33
To Prevent Accidental Start-Up33
Check Chiller Operating Condition33
Instruct the Customer Operator33
Operator Duties35
Operating Instructions35
Prepare the Chiller for Start-Up35
To Start the Chiller35
Check the Running System36
To Stop the Chiller36
After Limited Shutdown36
Preparation for Extended Shutdown36
After Extended Shutdown36
Cold Weather Operation36
Manual Guide Vane Operation36
Refrigeration Log36
Pumpout and Refrigerant38
Transfer Procedures38
Preparation38
General Maintenance41
Refrigerant Properties41
Adjusting the Refrigerant Charge41
Adding Refrigerant41
Refrigerant Leak Testing41
Leak Rate41
Test after Service, Repair, or Major Leak41
Repair the Leak, Retest, and Apply41
Standing Vacuum Test41
Checking Guide Vanes41
Trim Refrigerant Charge43
Weekly Maintenance43
Check the Refrigerant Lubrication System43
Check for Leaks43
Scheduled Maintenance43
Service Ontime43
Inspect the Control Panel43
Inspect the Purge44
Changing Refrigerant Lubrication Filters44
Inspect Refrigerant Float System44
Inspect Safety Relief Devices and Piping44
Compressor Bearing Maintenance45
Inspect the Heat Exchanger Tubes45
And Flow Devices45
Water Leaks45
Water Treatment45
Inspect the VFD45
Recalibrate Pressure Transducers46
Recalibrate Temperature Thermistors46
Ordering Replacement Chiller Parts46
Carrier Inhibitor46
Troubleshooting Guide46
Overview46
Checking Display Messages46
Checking Temperature Sensors46
Checking Pressure Transducers49
High Altitude Locations50
Quick Test50
Quick Calibration50
Pumpdown/Lockout50
Physical Data50
Structure71
Appendix A - Pic5 Screen and Menu72
Appendix B - Ccn Communication Wiring for Multiple Chillers (Typical)75
Appendix C - Maintenance Summary76
And Log Sheets76
Appendix D - Remote Connectivity77
Commissioning77
Index82
Initial Start-Up Checklist for 19Dv Semi-Hermetic Two-Stage Centrifugal Liquid Chiller83

Carrier AquaEdge 19DV series - Page 58

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