ZL-7918A Multifunctional Automatic Incubator Temperature Humidity Controller

1. Introduction

The ZL-7918A is an intelligent, stable, and user-friendly temperature and humidity controller designed for various applications including incubators, climate chambers, and warehouses. This manual provides detailed instructions for the proper installation, operation, and maintenance of your ZL-7918A controller to ensure optimal performance and longevity.

2. Product Overview

The ZL-7918A features a clear digital display for both temperature (PV TEMP) and humidity (PV WET), along with set values (SV). It includes control buttons for 'Set', 'Up', 'Down', and 'Enter', as well as indicators for various functions like fan, heating, egg turning, humidity, and alarm states.

Image: Front panel of the ZL-7918A controller, showing the digital temperature and humidity displays, status indicators, and control buttons.

3. Specifications

4. Package Contents

Upon opening your ZL-7918A package, please verify that all the following items are included:

• 1 x ZL-7918A Incubator Controller
• 2 x Connection Cables (for sensors)
• 1 x User Manual (this document)

5. Setup and Wiring

Careful wiring is essential for the safe and correct operation of the ZL-7918A controller. Refer to the wiring diagram and terminal table below for detailed connection instructions. Ensure all power is disconnected before performing any wiring.

Image: ZL-7918A Wiring Diagram

Image: ZL-7918A Terminal Connection Table

5.1. Sensor Connections

• Humidity Sensor: Connect the Red, Yellow, Black, and Orange wires of the humidity sensor to terminals 1, 2, 3, and 4 respectively.
• Temperature Sensor: Connect the temperature sensor to terminals 5 and 6.

5.2. Power Supply

• Connect the Neutral (N) wire of your 100-240Vac power supply to terminal 13.
• Connect the Live (L) wire of your 100-240Vac power supply to terminal 14.

5.3. Output Connections

All output devices (Fan, Egg Turning, Humidifier, Lamp) share a common connection (COM) at terminal 15. Heaters have dedicated terminals.

• Fan: Connect one wire of the fan to terminal 15 (COM) and the other to terminal 16 (FAN). (Max 1A/250V AC)
• Egg Turning (Left): Connect one wire of the left egg-turning motor to terminal 15 (COM) and the other to terminal 17 (LEFT). (Max 1A/250V AC)
• Egg Turning (Right): Connect one wire of the right egg-turning motor to terminal 15 (COM) and the other to terminal 18 (RIGHT). (Max 1A/250V AC)
• Humidifier: Connect one wire of the humidifier to terminal 15 (COM) and the other to terminal 19 (WET). (Max 1A/250V AC)
• Lamp (Illumination): Connect one wire of the lamp to terminal 15 (COM) and the other to terminal 20 (LAMP). (Max 1A/250V AC, total illumination load ≤ 100W)
• Auxiliary Heater (HEAT2): Connect the auxiliary heater to terminals 21 and 22. (Max 10A/220Vac, total heater load ≤ 1500W)
• Main Heater (HEAT1): Connect the main heater to terminals 23 and 24. (Max 10A/220Vac, total heater load ≤ 1500W)

Warning: Ensure all connections are secure and correctly matched to avoid damage to the controller or connected devices. Consult a qualified electrician if you are unsure about any wiring steps.

6. Operating Instructions

The ZL-7918A controller is designed for intuitive operation. The front panel features a digital display and four control buttons: SET, UP, DOWN, and ENTER.

6.1. Power On/Off

• To power on, ensure all wiring is complete and secure, then connect the controller to the AC 100~240V power supply.
• To power off, disconnect the controller from the power supply.

6.2. Setting Temperature and Humidity

1. Press the SET button once to enter the temperature setting mode. The temperature SV (Set Value) will flash.
2. Use the UP and DOWN buttons to adjust the desired temperature.
3. Press ENTER to confirm the temperature setting and move to humidity setting mode. The humidity SV will flash.
4. Use the UP and DOWN buttons to adjust the desired humidity.
5. Press ENTER again to confirm the humidity setting and exit the setting mode.

6.3. Advanced Settings (Egg Turning, Ventilation, Illumination)

To access advanced settings for egg turning, ventilation, and illumination, typically a long press of the SET button or a combination of buttons is required. Refer to the full user manual (if provided separately) for specific parameter codes and adjustment procedures. The general parameters are:

• Egg-Turning Control: Period (1~999 minutes), Turning Time (0~999 seconds), Turning Times (0~999 times).
• Ventilation Control: Period (1~999 minutes), Ventilating Time (0~999 seconds).
• Illumination Control: Period (1~999 minutes), Illuminating Time (0~999 seconds).

6.4. Hatching Day Record

The controller can record hatching days up to a maximum of 99 days. The method to reset or view this record will be detailed in the comprehensive manual.

7. Maintenance

Regular maintenance ensures the longevity and accuracy of your ZL-7918A controller.

• Cleaning: Wipe the controller's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no liquids enter the device.
• Sensor Care: Keep the temperature and humidity sensors clean and free from dust or debris. Avoid submerging them in water or exposing them to extreme physical shock.
• Environmental Conditions: Operate the controller within the specified environment: -10~45℃ and <90%RH without dew. Extreme conditions can affect performance and lifespan.
• Connection Check: Periodically inspect all wiring connections to ensure they remain tight and free from corrosion.

8. Troubleshooting

If you encounter issues with your ZL-7918A controller, try the following troubleshooting steps:

• No Power: Check the power supply connection and ensure the outlet is functional. Verify the power wiring to terminals 13 and 14.
• Incorrect Readings: Ensure sensors are correctly connected to their respective terminals (1-4 for humidity, 5-6 for temperature). Check for any physical damage or obstruction to the sensors.
• Outputs Not Activating: Verify the wiring for the specific output (heater, fan, etc.) to terminals 15-24. Check the set parameters for temperature, humidity, and timing functions to ensure they are within the desired range and trigger conditions.
• Alarm Triggered: Check the current temperature and humidity readings against the set alarm thresholds. Address the environmental condition causing the alarm.
• Display Issues: If the display is erratic or blank, power cycle the device. If the problem persists, contact support.

9. User Tips

• Sensor Placement: Position the temperature and humidity sensors in a location that accurately reflects the conditions within your incubator or climate chamber, away from direct heat sources or airflow.
• Calibration: While the controller is factory calibrated, if you suspect inaccuracies, consider using a trusted external thermometer/hygrometer to verify readings. Some advanced controllers may offer calibration options (refer to the full manual).
• Power Stability: Use a stable power source. Fluctuations can affect the controller's performance and lifespan.
• Regular Monitoring: Even with automatic control, periodic manual checks of temperature and humidity are recommended, especially during critical periods like hatching.

10. Warranty and Support

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.