Illustration 1 | g01277292 |
Controls Cabinet Left Panel (17) Breaker and Contactor Status Board (18) Remote EPO Terminal Block (19) T8 Modem Power Transformer (20) T6 Transformer (21) General Purpose Interface Board (22) Fan Power Fuse Block (23) Fuses F29-F32 (24) Fuses F20-F22 (25) Fuses F25-F28 (26) EPO Reset (27) Neutral Distribution Terminal (28) K1 Motor Power Relay (K9) |
The T6 Transformer is installed on the left panel near the top of the cabinet. Refer to Illustration 1 for the location of the transformer.
Illustration 2 | g01277733 |
T6 Transformer |
The thermistor for the T6 Transformer is located on the lower side of the transformer, as installed. The thermistor is connected to the "H1" connector of the transformer. Refer to Illustration 2 for the thermistor location.
The thermistor limits the in-rush of current on power-up.
Thermistor Specifications     | ||
---|---|---|
    | Size     | Ohm     |
T6     | 35mm     | 10@25?C     |
Transformer Specifications     | |||
---|---|---|---|
    | Input (V)     | Output (V)     | Wire Gauge (AWG)     |
T6     | 380, 400, 415, 440, 480     | 230     | 10-22     |
Thermistor Removal
- Perform steps in the Systems Operation, Testing and Adjusting, "Internal Component Preremoval Steps (Controls Cabinet)" in order to de-energize the system and gain access to internal components.
- Loosen the two screws and pull the thermistor free of the terminal block.
Note: Each thermistor is attached by two screws to the transformer terminal block. One to the H1 connector and one to the "COM", or unlabeled connector.
Thermistor Installation
- Loosen the screw of the "H1" connector and the adjacent "COM" connector.
The "COM" connector may not be labeled.
- Place one lead of the thermistor into the "H1" connector and place one lead into the "COM" connector next to the "H1" connector.
- Tighten the screws to attach the thermistor firmly.
Transformer Removal
- Perform steps in the Systems Operation, Testing and Adjusting, "Internal Component Preremoval Steps (Controls Cabinet)" in order to de-energize the system and gain access to internal components.
- Remove all four wires or wire pairs from the transformer by loosening the screws holding the wires in the terminal block.
Note: The transformer is heavy. Exercise caution when removing the last bolt so the transformer does not fall and damage components or personnel.
- Remove the 4 hex bolts at the corners of the transformer that hold the transformer to the cabinet panel. Use a 76 mm (3/16 inch) hex key.
- Remove the transformer from the cabinet.
Transformer Installation
- Position the transformer on the left panel at the top of the cabinet. The transformer is installed with the "H" connectors down.
- Attach the transformer using 4 hex bolts to the left panel. Use a 76 mm (3/16 inch) hex key.
- Connect the four wires to the transformer. Each wires location is labeled. Connect the orange wire that is labeled "COM" to the topside of the unlabeled connector next to "H1". Refer to Illustration 2.