![background image](http://html.mh-extra.com/html/danfoss/tgh285/tgh285_service-manual_506647224.webp)
224 of 282
M-SV-001-EN Rev. G
4. Remove the Serial Driver, BMCC, and PWM.
5. Set multimeter for resistance checks.
6. Test resistance on bearing power feed through pins defined in "Table 4-46 Magnetic
Bearing Coil Resistance Values". Refer to "Figure 4-285 Front and Rear Bearing Feed Through
Connectors" on page 224 for pin locations.
7. Compare the resistance values to those defined in "Table 4-46 Magnetic Bearing Coil
8. Test insulation of each pin to ground and between coils.
9. If the integrity of the bearing power feed through is in question, isolate the compressor,
recover the refrigerant according to industry standards, remove the feed through and repeat
the above steps directly at the internal bearing cluster block.
Table 4-46 Magnetic Bearing Coil Resistance Values
Figure 4-285 Front and Rear Bearing Feed Through Connectors
4.30.3.2 Bearing Current Verification
1. Connect to the compressor using the SMT.
2. Open the
Compressor Monitor tool
. Refer to "Figure 4-286 Compressor Monitor Tool" on page
3. Look at the bearing section and verify that, during compressor operation, the bearing
amperages displayed are within the range as defined in "Table 4-47 Bearing Amperage
Compressor Model & Design Sequence
Connector Location Bearing Identification Feed Through Pin
Identification
TTS300, TTS400,
TGS230, & TGS390
TTS350, TTS500,
TTS700, TGS310,
TGH490, TGS520,
TTH375, & TGH285
Rear Bearing
Connector
Rear Radial Coil
1 & 6
2.70 - 3.25Ω
2.70 - 3.25Ω
2 & 5
2.70 - 3.25Ω
2.70 - 3.25Ω
Axial Coil
3 & 4
5.70 - 6.20Ω
(TTS300/TGS230 only)
6.00 - 6.70Ω
(TTS400/TGS390 only)
6.00 - 6.70Ω
Front Bearing
Connector
Front Radial Coil
1 & 2
2.70 - 3.25Ω
4.70 - 5.20Ω
3 & 4
2.70 - 3.25Ω
4.70 - 5.20Ω
Notes
Refer to "Figure 4-285 Front and Rear Bearing
Feed Through Connectors" for pin locations
All resistance values are in ohms. Resistance
to ground and between coils should be
>100MΩ @1KV
Rear
Front
2
3
1
4
1 6
2 5
3 4
Содержание TGH285
Страница 14: ...14 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 30: ...30 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 38: ...38 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 40: ...40 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 46: ...46 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 50: ...50 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 238: ...238 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 240: ...240 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 260: ...260 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 262: ...262 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 268: ...268 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 276: ...276 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 280: ...280 of 282 M SV 001 EN Rev G THIS PAGE INTENTIONALLY LEFT BLANK ...