Maclean MCE83 Twilight Sensor Switch User Manual

Product Overview

The Maclean MCE83 Twilight Sensor Switch is designed to automatically control lighting based on ambient light levels. It is suitable for various applications such as street lights and garden lights. This device operates independently of ambient temperature and humidity, providing reliable performance.

Figure 1: The Maclean MCE83 Twilight Sensor Switch, showing the main unit and the coiled external light sensor probe.

Safety Warnings

WARNING: Installation should only be performed by a qualified electrician. Ensure power is disconnected before installation or maintenance to prevent electric shock. This product is certified CE/RoHS.

Specifications

Setup and Installation

1. Power Disconnection: Before commencing installation, ensure that the main power supply to the circuit is completely disconnected at the fuse box or circuit breaker.
2. Mounting: The MCE83 switch is designed for DIN rail mounting. Securely attach the unit to a standard DIN rail within an appropriate electrical enclosure.
3. Wiring Connections:
   • Connect the live (L) input wire to the terminal marked 'L'.
   • Connect the neutral (N) input wire to the terminal marked 'N'.
   • Connect the neutral (N') output wire to the terminal marked 'N''.
   • Connect the live (L') output wire to the terminal marked 'L''. This output will connect to your lighting fixture.
   

   Figure 2: Side view of the MCE83 unit, illustrating the input and output wiring terminals for electrical connection.

4. External Probe Connection: Connect the external light sensor probe to the designated terminals on the switch. Ensure a secure connection.
5. Probe Placement: Position the external light sensor probe in an area where it can accurately detect ambient light levels, away from direct artificial light sources that might interfere with its operation. The probe should be exposed to natural light.
   

   Figure 3: A close-up view of the external light sensor probe, which detects ambient light levels.

6. Power Restoration: Once all connections are secure and verified, restore power to the circuit.

Operating Instructions

The Maclean MCE83 operates automatically based on the detected ambient light. There is an adjustable setting for the light sensitivity.

• Automatic Operation: The switch will automatically turn on connected lights when the ambient light level falls below the set threshold (dusk) and turn them off when the ambient light level rises above the threshold (dawn).
• Adjusting Ambient Light Sensitivity:

  Locate the adjustment dial on the unit, typically marked with a sun and moon icon. Use a small screwdriver to rotate the dial to set the desired ambient light threshold for activation. Turning towards the sun icon generally increases the light level required for deactivation (lights off), and turning towards the moon icon decreases the light level required for activation (lights on).

  

  Figure 4: The MCE83 unit showing the adjustment dial for setting the ambient light sensitivity.

• Indicator Lights: The unit may feature indicator lights (e.g., green for power, red for output active) to show its current status. Refer to the specific markings on your unit for exact interpretations.

Maintenance

• Cleaning: Periodically clean the external light sensor probe to ensure it is free from dirt, dust, or obstructions that could affect its light detection capabilities. Use a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Inspection: Regularly inspect the wiring connections for any signs of wear, damage, or loose connections. Ensure the unit is securely mounted.
• Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prolong the lifespan of the device.

Troubleshooting

Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact Maclean customer service. Keep your proof of purchase for warranty claims.

Manufacturer: Maclean

Model Number: MCE83