Fan Transformer
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Illustration 1 | g01270898 |
I/O Transformer Location (1) T1 Transformer |
The T1 transformer (1) is a 480 VAC/230 VAC transformer that feeds the three fans at the top of the MMS I/O cabinet. The fan transformer (1) is installed on the right panel of the cabinet. Refer to Illustration 1 for the location of the transformer (1).
Removal Procedure for the Thermistor
Refer to Systems Operation, Testing and Adjusting, UENR3954, "Internal Component Preremoval Steps (Input/Output Cabinet)" in order to shut down the system and gain access to internal components.
- Loosen the two screws that attach the thermistor to the terminal block of the transformer.
- Remove the thermistor from the terminal block.
Installation Procedure for the Thermistor
- Loosen the screw of the H1 connector. Loosen the screw of the "COM" connector or the connector without labeling.
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Illustration 2 g01270998 Wire connections for the transformer with 3.0+ hardware - Attach one lead of the thermistor into the H1 connector. Attach one lead of the thermistor into the "COM" connector. Refer to Illustration 2 for the wire connections.
- Tighten the screws in order to attach firmly the thermistor to the terminal block for the transformer. Refer to Table 1 for specifications of the thermistor. Refer to Table 2 for specifications of the transformer (1).
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Specifications for the Thermistor | ||
Size | Ohm | |
T1 | |
20 |
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Specifications for the Transformer | |||
Input (VAC) | Output (VAC) | Wire Group (AWG) | |
T1 | 380, 400, 415, 480 | 230 | 10 |
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