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M-SV-VT-001-EN Rev. A
Compressor Components
1. Using a multimeter set for resistance measurements, check the resistance at the 9-pin connector
to verify connection to the sensor ring. Refer to Table 24 (Rear Bearing Sensor Pin Verification) for
the resistance specifications. Refer to Figure 101 (9-Pin Connector) for the pinout.
2. If the results do no match the specifications listed, remove the cable and check the resistances at
the feed through. Refer to Figure 102 (Feed Through Connector) for the pinout.
3. If the results still do not match the listed specifications, the feed through will need to be
tested for continuity. Refer to the “Rear Bearings” section for details on how to remove the feed
through.
3.7.1.8.2 Rear Bearing
Sensor Cable Verication
Table 24 - Rear Bearing
Sensor Pin Verication
Pins Sensor Type Resistance
6-7 Radial 2.0 Ω to 3.5 Ω
6-8 Radial 2.0 Ω to 3.5 Ω
9-1 Axial 2.0 Ω to 3.5 Ω
1-4 Axial 2.0 Ω to 3.5 Ω
2-3 Radial 2.0 Ω to 3.5 Ω
3-5 Radial 2.0 Ω to 3.5 Ω
5
2
3
7
8
4
9
6
1
Figure 101 - 9-Pin Connector
Installation:
1. Isolate the Compressor power as described in the “Electrical Isolation of the Compressor/VFD”
section of this manual.
2. Connect the 9-pin connector into J10 on the CCM Board.
3. Install the Molex connector into J1 on the CCM Board.
4. Twist and push to connect the sensor cable connection to the feed through.
5. Install the Service Side Cover.
6. Restore power to the compressor.
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