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M-SV-VT-001-EN Rev. A
Table of Contents
Contents
Table of Contents ............................................................................................................................... 3
List of Tables ....................................................................................................................................... 6
List of Figures ..................................................................................................................................... 7
Proprietary Notice ........................................................................................................................... 11
Introduction ..................................................................................................................................... 13
1.1 Purpose ..............................................................................................................................................................................................13
1.2 Organization .....................................................................................................................................................................................13
1.3 Commitment to Quality ...............................................................................................................................................................14
1.4 Safety Summary ..............................................................................................................................................................................14
1.4.1 Danger Notication .............................................................................................................................................................14
1.4.2 Caution Notication ............................................................................................................................................................14
1.4.3 Note ...........................................................................................................................................................................................14
1.5 Precautions .......................................................................................................................................................................................15
1.6 Refrigerant Type ..............................................................................................................................................................................15
1.7 Electrical Isolation of the VFD ....................................................................................................................................................15
1.8 Handling Electronic Static Sensitive Devices .......................................................................................................................15
1.8.1 ESD Protection/Grounding ...............................................................................................................................................16
1.9 Testing Voltages of the Power Electronics .............................................................................................................................16
1.10 VTT/VFD Fasteners .......................................................................................................................................................................16
1.11 VTT O-rings .....................................................................................................................................................................................17
Compressor Fundamentals ............................................................................................................. 19
2.1 Main Fluid Path ................................................................................................................................................................................19
2.2 Economizer .......................................................................................................................................................................................19
2.3 Compressor Cooling ......................................................................................................................................................................19
2.4 Compressor and VFD Cooling ....................................................................................................................................................20
2.5 VFD Cooling ......................................................................................................................................................................................20
2.6 Compressor Energy and Signal Flow .......................................................................................................................................21
Compressor Components ............................................................................................................... 25
3.1 Component Identication ...........................................................................................................................................................25
3.2 External Components ...................................................................................................................................................................30
3.2.1 IFV Pipe Assembly ................................................................................................................................................................30
3.2.1.1 Removal and Installation ........................................................................................................................................30
3.2.1.2 IFV Pipe Assembly Verication ..............................................................................................................................31
3.2.1.3 Torque Specications ...............................................................................................................................................31
3.2.2 IFV Actuator ............................................................................................................................................................................31
3.2.2.1 Removal and Installation ........................................................................................................................................32
3.2.2.2 Programming (Required) ........................................................................................................................................33
3.2.2.3 Calibration ....................................................................................................................................................................34
3.2.2.4 Torque Specications ...............................................................................................................................................34
3.2.3 ICM Body .................................................................................................................................................................................34
3.2.3.1 Removal and Installation ........................................................................................................................................35
3.2.3.2 Torque Specications ...............................................................................................................................................36
3.2.4 IFV Cable ..................................................................................................................................................................................36
3.2.4.1 Removal and Installation ........................................................................................................................................37
3.2.4.2 Verication....................................................................................................................................................................38
3.2.5 Pressure/Temperature Sensor Cable Harness ............................................................................................................39
3.2.5.1 Removal and Installation ........................................................................................................................................39
3.2.5.2 Verication....................................................................................................................................................................41
3.2.6 Economizer Blank .................................................................................................................................................................42
3.2.6.1 Removal and Installation ........................................................................................................................................42
3.2.6.2 Torque Specications ...............................................................................................................................................42
3.2.7 Motor Cooling EXV Assembly ..........................................................................................................................................43
3.2.7.1 Removal and Installation ........................................................................................................................................43
3.2.7.2 Verication....................................................................................................................................................................44
3.2.7.3 EXV Protection ............................................................................................................................................................45
3.2.7.4 Torque Specications ...............................................................................................................................................46
3.2.8 EXV Cable ................................................................................................................................................................................46
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