63 of 132
M-SV-001-EN Rev.E
Compressor Components
3.9.3 Verification
3.9.3.1 Input Voltage
Verification
3.9.3.2 Output Voltage
Verification
3.9.3.3 Input Resistance
Verification
3.9.3.4 Output
Resistance Measurement
1. Isolate the compressor power as described
in the “Electrical Isolation of the Compressor”
section of this manual.
2. Install the DC bus test harness.
3. Turn on the mains power to the compressor.
4. Using the DC bus test harness, verify the
expected voltages are present.
1.Remove the Service Side Cover.
2. With main power on, using a multimeter set for
DC voltage measurements, place the multimeter
leads in the HV+ and HV- test points on the
Backplane. See Figure 60 (Backplane Connections
and Test Points), terminal A and B. The result
should be 220 – 280 VDC.
3. Place the multimeter leads in the +24 and
0V test points on the Backplane. See Figure 60
(Backplane Connections and Test Points). The
result should be 22 – 26 VDC.
1. Isolate the compressor power as described
in the “Electrical Isolation of the Compressor”
section of this manual.
2. Unplug all connectors to the HV DC/DC
Converter.
3. Using a multimeter set for resistance
measurements, place the multimeter leads in
the J1, HV DC input plug terminals. See Figure
57 (DC/DC Converter Connections). The result
should not be 0.0Ω. The result can be open or
>150kΩ.
4. Reverse the multimeter leads on the J1 plug
terminals. See Figure 57 (DC/DC Converter
Connections). The result should not be 0.0Ω. The
result can be open or >150kΩ.
5. Place the multimeter leads in the J4, 15VAC
input terminals. See Figure 57 (DC/DC Converter
Connections). The result should be >1MΩ.
6. Reverse the multimeter leads on the J4
terminals. See Figure 57 (DC/DC Converter
Connections). The result should be >1MΩ.
1. Isolate the compressor power as described
in the “Electrical Isolation of the Compressor”
section of this manual.
2. Unplug all connectors to the HV DC/DC
Converter.
3. Using a multimeter set for resistance
measurements, place the multimeter leads on the
J2, 250VDC output terminals. See Figure 57 (DC/
DC Converter Connections). The result should be
a rising or falling value, not zero or infinity.
4. Reverse the multimeter leads on the J2
terminals. The result should be a rising or falling
value, not zero or infinity.
5. Place the multimeter leads in the middle row
of the J3, 24VDC output terminals. See Figure 57
(DC/DC Converter Connections) and Figure 58 (J3
24 VDC Output Connector). The result should be
a rising or falling value, not zero or infinity.
6. Reverse the multimeter leads on the J3
terminals and measure the resistance. The result
should be a rising or falling value, not zero or
infinity.
Figure 58 - J3 24VDC Output
Connector
Summary of Contents for Turbocor TT-300
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