Introdução
The Ranco® ETC Series Electronic Temperature Control is designed as a versatile electronic replacement for traditional electro-mechanical temperature controls commonly found in commercial refrigeration systems. This unit offers a broad temperature range, single-stage operation, and flexible heating/cooling modes, making it suitable for various applications. It supports multi-voltage input and features an LCD display for easy monitoring of temperature, settings, and relay status.
Principais características
- 1-Stage Controle de temperatura: Replaces electro-mechanical controls, handling 0 to 95 percent relative humidity and non-condensing ambient humidity conditions.
- Ampla faixa de temperatura: Operates from -30°F to 220°F (-34.4°C to 104.4°C).
- Selectable Modes: Offers selectable heating/cooling modes for application versatility.
- Multi-Voltage Entrada: Available in 120/208/240V AC and 24V AC models.
- LCD Read-out: Displays sensor temperature, control settings, and relay status.
- Alto Amp Relé de saída: Músicastage, FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC.
- EEPROM Memory: Retains control settings during power outage.
- Bloqueio do teclado: Prevents unauthorized alteration of settings.
- Extendable Sensor Lead: 8-foot lead, extendable up to 400 feet using 18 or 22-gauge thermostat wire.
- Sensor durável: Sensor rated IP67 for dust and water (1m) resistance.
- NEMA 1 Case and Cover: Provides protection for the control unit. NEMA 4X models are also available.
- Visor retroiluminado: White backlight on the LCD display for improved visibility.
Configuração e instalação
Proper installation is crucial for the optimal performance and longevity of your Ranco ETC-141000-000. Please follow these guidelines carefully.
Montagem da unidade de controle
The control unit is designed for wall mounting. Select a location that is easily accessible, protected from direct moisture (unless using a NEMA 4X model), and away from excessive vibration or heat sources. Ensure adequate ventilation around the unit.
Image: The Ranco ETC-141000-000 control unit, showing its NEMA 4X outdoor enclosure and the attached sensor cable. The unit features an LCD display and control buttons (SET, up arrow, down arrow).
Posicionamento do Sensor
The temperature sensor is critical for accurate readings. Place the sensor in the area where temperature control is required, ensuring it is not directly exposed to air currents from fans or heating/cooling elements that could cause inaccurate readings. The sensor has an 8-foot lead and can be extended up to 400 feet using 18 or 22-gauge thermostat wire. Ensure all connections are secure and properly insulated.
Image: The Ranco ETC-141000-000 control unit, with a clear view of the sensor tip at the end of its cable. The sensor is rated IP67 for dust and water resistance.
Conexões elétricas
Before making any electrical connections, ensure the power supply is disconnected. The unit supports 120V, 208V, and 240V AC. Refer to the wiring diagram provided with your unit for specific connection details. All wiring should comply with local electrical codes and standards. Improper wiring can lead to malfunction or damage.
Instruções de operação
The Ranco ETC-141000-000 is designed for user-friendly operation with a simple 4-step setup process.
Operação básica
- Ligar: Once properly wired, apply power to the unit. The LCD display will illuminate, showing the current sensor temperature.
- Exibição de temperatura: The LCD continuously displays the current temperature measured by the sensor. You can switch between °F and °C modes as desired.
- Temperatura de ajuste: Use the "SET" button to enter the programming mode. Use the up and down arrow buttons to adjust the desired setpoint temperature. Press "SET" again to confirm.
- Ajuste diferencial: The unit allows for a wide differential adjustment (1°F to 30°F or -17°C to -1°C). This setting determines the temperature range around the setpoint before the relay activates or deactivates.
- Modo de aquecimento/resfriamento: Select the appropriate mode (heating or cooling) based on your application. This setting dictates whether the relay activates when the temperature is below or above the setpoint.
- Anti-Short Cycle Delay: For cooling applications, an anti-short cycle compressor delay is built-in to protect the compressor from rapid cycling.
- Bloqueio do teclado: To prevent accidental or unauthorized changes to settings, the keypad can be locked. Refer to the detailed manual (not provided here, but typically included with the product) for instructions on activating and deactivating the keypad lockout feature.
Manutenção
The Ranco ETC-141000-000 is designed for reliable operation with minimal maintenance. However, periodic checks can help ensure its continued performance.
- Limpeza: Periodically wipe the control unit and display with a soft, damp pano. Não use produtos de limpeza abrasivos ou solventes.
- Inspeção do Sensor: Ensure the sensor and its cable are free from damage, kinks, or excessive dirt buildup. The sensor is rated IP67, meaning it is protected against dust and temporary immersion in water (up to 1 meter for 30 minutes).
- Verificações de conexão: Annually, or as needed, inspect all electrical connections to ensure they are secure and free from corrosion.
- Condições ambientais: Assegure-se de que o ambiente operacional permaneça dentro das faixas de temperatura e umidade especificadas para evitar desgaste prematuro.
Solução de problemas
If you encounter issues with your Ranco ETC-141000-000, consider the following common troubleshooting steps:
| Problema | Possível causa | Solução |
|---|---|---|
| O visor está em branco ou o aparelho não responde. | No power, incorrect wiring, or internal fault. | Check power supply. Verify electrical connections according to the wiring diagram. If power is present and wiring is correct, contact technical support. |
| Leitura de temperatura incorreta. | Sensor improperly placed, damaged sensor, or loose sensor connection. | Ensure sensor is correctly positioned in the desired temperature zone. Inspect sensor cable for damage. Check sensor connections at the unit. |
| Unit not controlling temperature as expected. | Incorrect setpoint, differential, or heating/cooling mode settings. | Verify setpoint, differential, and heating/cooling mode settings are appropriate for your application. Ensure keypad lockout is not active if you are trying to change settings. |
| Configurações perdidas após desligamentotage. | This should not occur. | The EEPROM memory retains control settings during power outages. If settings are lost, contact technical support as this indicates an unusual fault. |
For issues not covered here, or if problems persist, please contact Ranco technical support.
Especificações
| Marca | Ranco |
| Número do modelo | ETC-141000-000 |
| Faixa de temperatura | -30°F a 220°F (-34.4°C a 104.4°C) |
| Ajuste Diferencial | 1°F a 30°F (-17°C a -1°C) |
| Volumetage | 120V AC, 208V AC, 240V AC, 24V AC (model dependent) |
| Relé de Saída | FL 16 Amps @ 120V AC, 8 Amps @ 208/240V AC (single stage) |
| Sensor Lead Length | 8 feet (extendable up to 400 feet) |
| Classificação do Sensor | IP67 (resistente à poeira e à água) |
| Classificação do gabinete | NEMA 1 (standard), NEMA 4X (available models) |
| Tipo de exibição | Digital LCD with white backlight |
| Dimensões | 2.75 x 2.5 x 6.5 polegadas |
| Peso do item | 1.2 libras |
Garantia e Suporte
For detailed warranty information, please refer to the documentation included with your product or visit the official Ranco website. Ranco products are manufactured by Robertshaw.
For technical assistance, troubleshooting beyond this manual, or to inquire about replacement parts, please contact Robertshaw customer support. You can often find contact information and additional resources on the official Robertshaw website: Visit the Robertshaw Store on Amazon.
