Wiring diagrams

Disconnect power at the panel and verify with a meter before wiring.

1. Control type

2. Remote

3. Motor

TEC II → AO Smith cap-start, 230V single-phase

TEC II receiver drives two contactors (UP / DOWN). Contactors swap T5/T8 to reverse the motor.

Common pattern
TEC IIAO Smith / Century capacitor-start reversible

Wire it

  1. 1
    Panel L1 (hot)→Contactor pair common line
  2. 2
    Panel L2 (hot)→Contactor pair common line
  3. 3
    Panel ground→Lift bond + motor frame

    Bond the motor frame to the lift structure.

  4. 4
    TEC II UP dry contact→UP contactor coil

    Coil voltage must match receiver output / control transformer.

  5. 5
    TEC II DOWN dry contact→DOWN contactor coil
  6. 6
    UP contactor T1→Motor T1 (line)
  7. 7
    UP contactor T2→Motor T4 (line)
  8. 8
    UP contactor T3→Motor T5 (start)
  9. 9
    UP contactor T4→Motor T8 (start)
  10. 10
    DOWN contactor T3→Motor T8 (start, swapped)

    DOWN swaps the start leads → reverses rotation.

  11. 11
    DOWN contactor T4→Motor T5 (start, swapped)
  12. 12
    Start capacitor→In series with T5 lead

    Per motor nameplate — typically 161–193 µF, 125V.

Gotchas

  • Mechanically interlock the UP and DOWN contactors. Energizing both simultaneously shorts the start winding and burns the motor.
  • Confirm dual-voltage jumpering on the motor matches 230V before applying power.
  • If the lift goes the wrong direction on UP, swap T5 ↔ T8 at the motor — do not swap L1/L2.

TEC II → AO Smith cap-start, 115V single-phase

Same logic as 230V install, but motor is jumpered for 115V and only one line is hot.

Common pattern
TEC IIAO Smith / Century capacitor-start reversible

Wire it

  1. 1
    Panel L1 (hot)→Contactor pair common line
  2. 2
    Panel neutral→Motor neutral terminal
  3. 3
    Panel ground→Lift bond + motor frame
  4. 4
    TEC II UP dry contact→UP contactor coil
  5. 5
    TEC II DOWN dry contact→DOWN contactor coil
  6. 6
    UP contactor switched line→Motor T1 (line, hot in UP)
  7. 7
    UP contactor switched start→Motor T5
  8. 8
    DOWN contactor switched start→Motor T8 (swapped)
  9. 9
    Start capacitor→In series with T5 lead

Gotchas

  • Verify motor jumpers are set for 115V — wrong jumpering on 115V install will smoke the windings.
  • Mechanical interlock between UP and DOWN contactors is still required.