Danfoss Turbocor VTT Series Service Manual page 9

List of Figures
Figure 130 - Suction Cover Removed .......................................................................................................................................... 106
Figure 131 - Guide Pin Locations .................................................................................................................................................. 107
Figure 132 - End Cap Removal ....................................................................................................................................................... 107
Figure 133 - Shaft Dowel Pin Placement .................................................................................................................................... 108
Figure 134 - Impeller Bolt ................................................................................................................................................................ 108
Figure 135 - First Stage Impeller Removal ................................................................................................................................. 109
Figure 136 - Nylon Shaft Protector and Cap ............................................................................................................................. 109
Figure 137 - Volute Removal - Step One ..................................................................................................................................... 110
Figure 138 - Volute Removal - Step Two ..................................................................................................................................... 110
Figure 139 - Second Stage Impeller Removal .......................................................................................................................... 111
Figure 140 - Touchdown Bearing/Labyrinth Seal Plate Removal ...................................................................................... 111
Figure 141 - Front Touchdown Bearing ...................................................................................................................................... 112
Figure 142 - Shim Example.............................................................................................................................................................. 112
Figure 143 - Front Bearing Feed Through Internal Connectors ......................................................................................... 113
Figure 144 - Front Bearing Sensor and Power Bearing Feed Throughs .......................................................................... 113
Figure 145 - Front Bearing Sensor Feed Through ................................................................................................................... 114
Figure 146 - Front Bearing Power Feed Through .................................................................................................................... 114
Figure 147 - Touchdown Bearing/Labrynth Seal Plate Torque Pattern ........................................................................... 115
Figure 148 - Volute Torque Pattern ............................................................................................................................................... 116
Figure 149 - Suction Housing Torque Pattern .......................................................................................................................... 117
Figure 150 - Front Bearing Power Feed Through Pinout ...................................................................................................... 118
Figure 151 - Front Twin Bearing Assembly ................................................................................................................................ 119
Figure 152 - Twin Bearing Mylar Insertion ................................................................................................................................. 121
Figure 153 - Guide Pin Locations .................................................................................................................................................. 121
Figure 154 - End Cap Removal ....................................................................................................................................................... 122
Figure 155 - Rear Bearing Sensor and Rear Bearing Power Harness ................................................................................ 122
Figure 156 - Rear Feed Through Removal .................................................................................................................................. 123
Figure 157 - Axial Bearing Assembly Jacking Screw Locations .......................................................................................... 123
Figure 158 - Axial Bearing Removal ............................................................................................................................................. 124
Figure 159 - Thrust Disk Removal ................................................................................................................................................. 124
Figure 160 - Stator Cooling Temperature Sensor .................................................................................................................... 125
Figure 161 - Radial Bearing Mylar Insertion .............................................................................................................................. 125
Figure 162 - Radial Bearing Screws .............................................................................................................................................. 126
Figure 163 - Radial Bearing Assembly Jacking Screw Locations ....................................................................................... 126
Figure 164 - Radial Bearing Assembly Removal ...................................................................................................................... 127
Figure 165 - Stator View ................................................................................................................................................................... 127
Figure 166 - Thrust Disk Alignment Pins .................................................................................................................................... 128
Figure 167 - Rear Bearing Sensor Feed Through ..................................................................................................................... 129
Figure 168 - Rear Bearing Power Feed Through ...................................................................................................................... 129
Figure 169 - Rear Bearing Power Feed Through Pin Identification ................................................................................... 130
Figure 170 - VFD .................................................................................................................................................................................. 133
Figure 171 - VFD Control Card ........................................................................................................................................................ 134
Figure 172 - RS 485 and Interlock Connection Details .......................................................................................................... 134
Figure 173 - VFD Orifice .................................................................................................................................................................... 136
Figure 174 - Cold Plate Tubes ......................................................................................................................................................... 136
Figure 175 - VFD Valve ...................................................................................................................................................................... 137
Figure 176 - VFD Pressure Control Valve Cable ........................................................................................................................ 138
Figure 177 - VFD Pressure Control Valve Pin Identification ................................................................................................. 138
Figure 178 - VFD Pressure Control Valve M12 Connection .................................................................................................. 139
Figure 179 - CIM (Revisions A and B) J6 Connection ............................................................................................................ 139
Figure 180 - CIM (Revisions A and B) Wire Diagram ............................................................................................................... 140
Figure 181 - VFD DC-DC Cable ....................................................................................................................................................... 140
Figure 182 - DC-DC J1 Connector ................................................................................................................................................. 141
Figure 183 - VFD + Regen 82 and - Regen 83 .......................................................................................................................... 141
Figure 184 - DC-DC (Revisions A and B) ...................................................................................................................................... 143
Figure 185 - DC-DC (Revisions C and Later) .............................................................................................................................. 143
Figure 186 - DC-DC J1 Connection and J12 -J13 Test Points ............................................................................................... 144
Figure 187 - DC-DC J2 and J4 Connections ............................................................................................................................... 145
Figure 188 - DC-DC J1 Connection and J12 -J13 Test Points ............................................................................................... 145
Figure 189 - DC-DC J2 and 4 Connections ................................................................................................................................. 146
Figure 190 - Fan Connector ............................................................................................................................................................. 147
Figure 191 - DC-DC Fan Orientation ............................................................................................................................................ 147
Figure 192 - DC-DC 24 and 250 VDC Output (Revisions A and B) ..................................................................................... 148
Figure 193 - DC-DC 24 and 250 VDC Output (Revisions C and Later) .............................................................................. 148
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M-SV-VT-001-EN Rev. A