Johnson Controls YORK PYT 0330 Instruction Manual page 3

General safety guidelines................................................................................................................................5
Safety symbols....................................................................................................................................... 5
Voltage warning.....................................................................................................................................6
Changeability of this document...........................................................................................................7
Associated literature..............................................................................................................................8
Conditioned based maintenance.........................................................................................................8
Drive and starter model nomenclature.............................................................................................. 9
Introduction.................................................................................................................................................... 10
How to use this document..................................................................................................................10
Inhibitor loop service guidelines and flowcharts............................................................................ 10
How to drain, flush, fill, and vent PYT and HYP model drive coolant loops............................................ 20
Items required..................................................................................................................................... 20
Supporting documents....................................................................................................................... 20
External piping components for all PYT model drives.................................................................... 21
Draining the system for all PYT model drives.................................................................................. 27
Filling the system for all PYT model drives....................................................................................... 28
External piping components for all HYP model drives................................................................... 30
Flushing process for HYP model drives............................................................................................ 36
Draining the system for HYP0490, HYP0744, HYP0774 model drives with air-cooled
input inductors.......................................................................................................................... 37
Draining the system for HYP0490 Mod B, HYP0612, and HYP0730 model drives........................38
Draining the system HYP1100, HYP1278, and HYP1300 model drives.......................................... 39
Flushing process for all HYP model drives....................................................................................... 40
Filling procedure for HYP0744 drive only......................................................................................... 41
Filling procedure for HYP0490, HYP0612, HYP0774, HYP1100, and HYP1278/HYP1300.............. 43
Unit conversion...............................................................................................................................................45
Temperature.........................................................................................................................................45
Chillers with YORK Liquid-Cooled Variable Speed Drives and Starters
Contents
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