1. Introdución
This user manual provides essential information for the safe and efficient installation, operation, and maintenance of your Nidec US Motors 1279.25HP Packaged Terminal AC Heat Pump Motor. Please read this manual thoroughly before attempting to install or operate the motor. Retain this manual for future reference.
This motor is designed for use in packaged terminal air conditioner (PTAC) units, offering reliable performance with its permanent split capacitor design and automatic overload protection.
2. Información de seguridade
WARNING: Electrical shock hazard. Always disconnect power before installing, servicing, or cleaning this motor. Installation and service should only be performed by qualified personnel.
- Asegúrese de que se cumpran todos os códigos eléctricos locais e nacionais durante a instalación.
- Comprobar que a subministración voltage matches the motor's rated voltage (208V ou 230V).
- Do not operate the motor if it is damaged or if any electrical connections are loose.
- The motor is equipped with automatic overload protection. If the motor stops unexpectedly, allow it to cool before attempting to restart. Investigate the cause of the overload.
- Manteña as mans e a roupa lonxe das pezas móbiles durante o funcionamento.
3. Produto rematadoview
The Nidec US Motors 1279.25HP motor is a robust and efficient component for your PTAC system. It features a permanent split capacitor (PSC) design for reliable starting and continuous operation.

Image showing the Nidec US Motors 1279.25HP Packaged Terminal AC Heat Pump Motor, highlighting its compact design and electrical connections.
Características principais:
- Potencia: 1 / 4 HP
- Velocidade: 1625 RPM (2-Speed capable)
- Voltage: 208-230V, 1 Phase
- Actual: 1.4 Amps
- Dimensións do eixe: 9.5" x 1/2" x 9.5" (Shaft height 3.0")
- Rotación: Counter-Clockwise (CCW) lead end
- Diámetro: 5 polgadas
- Motor Case Length: 4.062 polgadas
- Rodamentos: Rodamentos de manga
- Recinto: Open Air Over
- Illamento: Clase B
- Temperatura ambiente: 40°C
- Pistas: 36 polgadas
- Includes capacitor for operation.
4. Configuración e instalación
Proper installation is crucial for the motor's performance and longevity. Refer to the PTAC unit's specific installation guidelines in conjunction with these instructions.
4.1 Montaxe
- Ensure the mounting surface is stable and free from vibrations.
- Mount the motor securely using appropriate fasteners for its 42Y Frame.
- Verify that the motor shaft is properly aligned with the driven component (e.g., fan blade) to prevent undue stress on the bearings.
- Ensure adequate airflow around the motor for cooling, as it is an Open Air Over enclosure type.
4.2 Conexións eléctricas
- DISCONNECT ALL POWER to the PTAC unit before making any electrical connections.
- Identify the motor's lead wires (36 inches long) and the corresponding terminals on the PTAC unit's control board.
- Connect the motor to a 208V or 230V, 1-phase power supply as indicated on the motor's nameplate and the PTAC unit's wiring diagram.
- Asegúrate de que todas as conexións estean axustadas e illadas para evitar curtocircuítos.
- Confirm the capacitor is correctly wired according to the motor's wiring diagram.
- After wiring, double-check all connections before restoring power.
5. Instrucións de funcionamento
This motor is designed for continuous duty operation within a packaged terminal air conditioner. Its operation is typically controlled by the PTAC unit's thermostat and control system.
- Once installed and wired correctly, restore power to the PTAC unit.
- Set the PTAC unit to the desired operating mode (e.g., fan, heat, cool).
- The motor will start and operate at 1625 RPM. If the PTAC unit supports 2-speed operation, the motor will switch speeds as commanded by the unit's control system.
- Monitor the motor during its initial operation for any unusual noises, vibrations, or overheating. If any issues are observed, immediately disconnect power and refer to the troubleshooting section.
6. Mantemento
The Nidec US Motors 1279.25HP motor is designed for low maintenance. Regular inspection and cleaning will help ensure its long-term reliability.
6.1 Inspección de rutina
- Mensual: Visually inspect the motor for any signs of physical damage, corrosion, or loose connections.
- Trimestral: Check for excessive dust or debris accumulation on the motor's exterior, especially around the ventilation openings.
- Anualmente: Verify that the mounting bolts are secure and that the shaft remains properly aligned.
6.2 Limpeza
- DISCONNECT ALL POWER before cleaning the motor.
- Use a soft brush or compressed air to remove dust and debris from the motor's exterior and ventilation openings.
- Do not use water or liquid cleaners directly on the motor.
6.3 Rodamentos
This motor uses sleeve bearings, which are typically self-lubricating and do not require additional lubrication under normal operating conditions.
7 Solución de problemas
If you encounter issues with your motor, refer to the following table for common problems and solutions. Always disconnect power before performing any troubleshooting steps.
| Problema | Causa posible | Solución |
|---|---|---|
| O motor non arranca | Sen fonte de alimentación Cableado incorrecto Condensador defectuoso Protección de sobrecarga activada | Comprobar a fonte de alimentación e o disyuntor Verificar o cableado co diagrama Test or replace capacitor Allow motor to cool, check for obstructions |
| O motor sobrequenta | Ventilación insuficiente Condición de sobrecarga Alta temperatura ambiente | Asegurar un fluxo de aire limpo arredor do motor Reduce load or check for binding Verify ambient temperature is within 40°C limit |
| Ruído ou vibración excesivos | Montaxe solta Eixo desalineado Rodamentos danados | Aperte os parafusos de montaxe Realign shaft and driven component Contactar co persoal de servizo cualificado |
If the problem persists after attempting these solutions, contact qualified service personnel or Nidec customer support.
8. Especificacións
| Atributo | Valor |
|---|---|
| Marca | Nidec |
| Número de modelo | 1279.25 HP |
| Número de peza | K048CLJ1126011B |
| Caballos de forza | 0.25 CV (1/4 CV) |
| Velocidade | 1625 RPM |
| Voltage | 208 V, 230 V |
| Fase | 1 Fase |
| Actual | 1.4 Amps |
| Marco | 42Y Frame |
| Dimensións do eixe | 9.5" x 1/2" x 9.5" |
| Shaft Height | 3.0" |
| Rotación | CCW Lead End |
| Diámetro do motor | 5 polgadas |
| Lonxitude da caixa do motor | 4.062 polgadas |
| Rodamentos | Manga |
| Recinto | Open Air Over |
| Clase de illamento | B |
| Temperatura ambiente | 40°C |
| Lonxitude do cable de chumbo | 36 polgadas |
| Peso do elemento | 18 libras |
| UPC / GTIN | 663001635345 |
| ASIN | B076FD7Q2N |
9. Garantía e soporte
9.1 Información da garantía
This Nidec US Motors 1279.25HP motor comes with a 1 ano de garantía desde a data de compra. Esta garantía cobre defectos de materiais e fabricación en condicións de uso e mantemento normais. Conserve o comprobante de compra para reclamacións de garantía.
A garantía non cobre os danos resultantes dunha instalación incorrecta, mal uso, neglixencia, reparacións non autorizadas ou fenómenos naturais.
9.2 Atención ao cliente
For technical assistance, warranty claims, or to inquire about replacement parts, please contact Nidec customer support. Refer to the official Nidec website or your product documentation for the most current contact information.
When contacting support, please have your motor's model number (1279.25HP) and part number (K048CLJ1126011B) readily available.