LiftMaster T Manual Del Usuario página 4

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INSTALL NEW POWER BOARD & TERMINAL BLOCK ASSEMBLY
1. Install the new power board into the operator. Position the
board onto mounting posts pressing firmly to ensure posts are
completely through mounting holes.
2. Install new terminal block assembly kit reusing existing
hardware to secure to operator electrical box.
3. Reconnect the following to the power board:
• White (J6), grey (J7), and purple (J8) transformer wires
• Motor harness, connector harness (J9), and brake connector
(if present)
• L1 (black), L2 (white), and L3 (purple) terminal block wires
4. Plug brake harness into power board (if present).
5. Secure coaxial antenna, brake, and transformer wires together
with cable ties.
6. Adhere new wiring diagram onto the electrical box cover.
7. Reconnect L1, L2, L3 and Ground power wires to terminal
block.
Terminal Block Assembly
Models H and J
L1
BLACK
L2
WHITE
L3
PURPLE
3 PHASE POWER BOARD
Yellow Wires
INSTALL NEW LOGIC CONTROL BOARD
1. Install the logic control board into the operator. Position the
board onto mounting posts pressing firmly to ensure posts are
completely through mounting holes.
2. Reconnect all wires:
• Control Wiring Terminal Block
• System Wiring Connector (J3)
• Coaxial Antenna
3. Install option boards in slots 1 and/or 2 (if present).
4. Connect current sensor (yellow) wire from power board to (J8)
connection and reconnect coaxial antenna to logic control
board.
5. Make sure the electrical box is clear of all debris and tools.
Reconnect the power, but DO NOT activate the operator.
See PROGRAMMING to complete installation.
T_COMM
WHITE
T_460V
T_230V
PURPLE
or 575V
GRAY
Black Wire
LOGIC 5.0 CONTROL BOARD
4

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