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TP48200A-HT19C4-1, TBC300A-TCA2 Outdoor Power System User Manual

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a TEC

Replacing a TEC

Prerequisites

  • Prepare an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the cabinet door key.

  • Check that the new TEC is intact.

Context

You only need to disconnect the power supply to the TCUA control box, but do not need to disconnect the AC input to the power system.

Procedure

  1. Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and ESD gloves.
  2. Remove the TEC control box.
    1. Switch off the circuit breaker for the TCUA control box on the DC PDU.
    2. Record positions where cables connect to the TCUA control box and disconnect the cables.
    3. Unscrew and remove the TCUA control box, as shown in Figure 4-17.
  3. Remove the TEC.
    1. Record the position where the TEC cable connect to the TCUA control board, and disconnect the cable.
    2. Unscrew and remove the external cover from the cabinet door, as shown in Figure 4-19.
    3. Unscrew and remove the TEC, as shown in Figure 4-20.

      Figure 4-19  Removing the external cover from the cabinet door

      Figure 4-20  Removing the TEC

  4. Install a new TEC.
    1. Properly place the TEC and tighten the screws.
    2. Place the external cover onto the cabinet door, and tighten the screws.
    3. Connect the cables between the TEC and the TCUA control board based on the recorded positions.
  5. Install the TCUA control box.
    1. Properly place the TCUA control box and tighten the screws.
    2. Connect the signal cable to the TCUA control box based on the recorded position.
    3. Switch on the circuit breaker for the TCUA control box on the DC PDU.
  6. Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and ESD gloves.

Follow-up Procedure

Send the replaced TEC for repair.

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Updated: 2019-03-05

Document ID: EDOC1000078969

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