1. Product Overview
The NEKPOKKA 12V Universal Electric Car Air Conditioner Compressor system is designed to provide cooling for various heavy-duty vehicles, including trucks, buses, vans, RVs, and motorhomes. This electric air conditioning unit operates independently from the vehicle's engine, allowing for cooling even when the engine is off. It features a low-noise design and is engineered for energy efficiency.
Image 1.1: The complete NEKPOKKA 12V electric air conditioner kit, including the compressor, condenser, evaporator, and various accessories.
Key Features:
- Independent Operation: Functions with battery power, allowing use when the vehicle engine is off.
- Low Noise: Designed for quiet operation.
- Energy Efficient: Optimized for reduced power consumption.
- Wide Application: Suitable for trucks, tractors, excavators, construction vehicles, heavy vehicles, agricultural vehicles, RVs, and pickups.
2. Safety Information
Please read and understand all safety instructions before installing, operating, or performing maintenance on this product. Failure to follow these instructions may result in electric shock, fire, serious injury, or property damage.
General Safety Precautions:
- Electrical Safety: Always disconnect power before working on electrical components. Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Refrigerant Handling: This system uses R-134A refrigerant. Refrigerant should only be handled by certified professionals. Improper handling can cause frostbite, chemical burns, or environmental damage.
- Installation: Installation should be performed by qualified personnel. Ensure proper ventilation during installation and operation.
- Component Placement: Mount components securely to prevent vibration damage or detachment during vehicle movement.
- Eye and Skin Protection: Wear appropriate personal protective equipment, including safety glasses and gloves, when working with the system.
- Ventilation: Ensure adequate airflow around the condenser and evaporator units for optimal performance and to prevent overheating.
3. Package Contents
Verify that all components listed below are present and undamaged before beginning installation.
Image 3.1: All components included in the NEKPOKKA 12V electric air conditioner kit.
List of Components:
- Electronic Fan
- Condenser
- Scroll Electric Compressor
- O-rings (Assorted sizes)
- High and Low Pressure Compressor Joint
- Electric Relay
- Control Panel
- Drying Bottle Clamp
- Aluminum Joints (Straight)
- Aluminum Joints (Bent)
- Drying Bottle
- Joint Crimping Sleeves
- Power Cord Extension
- BH10.5/Compressor Condenser Hose
- BH8/High Pressure Pipe
- BH13/Low Pressure Pipe
4. Specifications
| Feature | Specification |
|---|---|
| Voltage | DC 12V |
| Starting Current | 75A |
| Rated Speed | 2000rpm |
| Speed Range | 1800rpm |
| Rated Power | 550W |
| Cooling Capacity | 1.688KW / 8875BTU |
| Condensing Temperature Range | 35°C-45°C |
| Evaporating Temperature Range | 15°C |
| Displacement | 25cc |
| Oil Type | POE-68/100ml |
| Evaporator Refrigeration Capacity | 32220BTU, 8116KCAL, 610CFM |
| Evaporator Type | 36-tube type 36PASS 4 WAY ALU |
| Evaporator Air Volume | 4-speed |
| Evaporator Dimensions (L x W x H) | 80.5cm x 34cm x 14.5cm (31.7in x 13.4in x 5.7in) |
| DC Brushless Controller Max Power | 600W |
| DC Brushless Controller Working Temperature | Below 50℃ |
| Noise Level | 28 dB |
| Refrigerant | R-134A |
5. Installation Guide
Proper installation is crucial for the performance and longevity of your NEKPOKKA electric air conditioner. It is recommended that installation be performed by a qualified technician.
5.1 Component Identification and Placement
Familiarize yourself with the main components and their typical placement within the vehicle.
Image 5.1.1: Evaporator unit, typically mounted inside the cabin.
Image 5.1.2: Electric compressor and drying bottle, typically mounted outside the cabin.
Image 5.1.3: Condenser unit with electronic fan, typically mounted externally for airflow.
5.2 Wiring Connections
Refer to the wiring diagram and wire name identification for correct electrical connections.
Image 5.2.1: Identification of various wire connectors and their functions.
Image 5.2.2: Detailed wiring diagram showing connections between all major components and the battery.
5.3 General Installation Steps:
- Mount Components: Securely mount the evaporator unit inside the vehicle cabin. Mount the compressor, condenser with fan, and drying bottle in suitable external locations, ensuring good airflow for the condenser.
- Connect Refrigerant Lines: Connect the high-pressure and low-pressure pipes between the compressor, condenser, drying bottle, and evaporator. Ensure all connections are tight and use appropriate O-rings and crimping sleeves.
- Electrical Wiring: Follow the wiring diagram (Image 5.2.2) carefully. Connect the compressor, evaporator, condenser fan, and control panel to the DC brushless controller. Connect the controller directly to the vehicle's 12V battery, ensuring proper polarity (positive to positive, negative to negative).
- Vacuum and Charge System: After all mechanical and electrical connections are made, the system must be evacuated using a vacuum pump to remove air and moisture. Once evacuated, charge the system with the specified amount of R-134A refrigerant. This step requires specialized equipment and expertise.
- Leak Test: Perform a leak test on all refrigerant connections to ensure there are no leaks.
- Test Operation: Once charged and leak-free, test the system's operation according to the operating instructions.
6. Operating Instructions
The NEKPOKKA electric air conditioner is controlled via the evaporator's integrated control panel.
Image 6.1: Evaporator unit with integrated control panel.
Control Panel Functions:
- Power Switch: Typically a button or switch to turn the unit ON/OFF.
- Temperature Control: A dial or buttons to adjust the desired cooling temperature. The system features electronic thermostatic control.
- Fan Speed Control: A dial or buttons to select one of the four available fan speeds for the evaporator.
- Mode Selection (if applicable): Some units may have modes like 'City' or 'Highway' which might adjust fan or compressor behavior.
Starting the Unit:
- Ensure the vehicle's battery is adequately charged.
- Turn the power switch to the 'ON' position.
- Adjust the temperature control to your desired cooling level.
- Select the desired fan speed.
The system will begin to cool the cabin. The compressor will cycle on and off to maintain the set temperature.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your air conditioning system.
Recommended Maintenance Schedule:
- Monthly:
- Inspect all visible hoses and connections for signs of leaks or damage.
- Check the evaporator and condenser fins for dirt or debris. Clean gently with a soft brush or compressed air if necessary.
- Every 6 Months:
- Check the vehicle's battery voltage to ensure it is within the recommended range for the AC unit.
- Inspect electrical connections for corrosion or looseness.
- Annually (or as needed):
- Have a qualified technician check the refrigerant level and system pressure. Recharge if necessary.
- Inspect the compressor for unusual noises or vibrations.
Important: Do not attempt to service the refrigerant system yourself unless you are a certified professional. Refrigerant is a hazardous substance.
8. Troubleshooting
The DC brushless controller features an LED indicator that blinks to signal various operational statuses or error conditions. Refer to the table below for common issues and their corresponding LED codes.
Image 8.1: DC brushless controller showing the LED indicator and a list of blinking codes.
LED Blinking Codes:
| Blinks | Condition | Possible Solution |
|---|---|---|
| 1 time, pause 1 second | Standby mode | Normal operation, unit is waiting for command. |
| 2 times, pause 1 second | Excessive current | Check for short circuits or overloaded components. Inspect wiring. |
| 3 times, pause 1 second | Locked rotor protection | Compressor motor is unable to rotate. Check for obstructions or motor failure. |
| 4 times, pause 1 second | Undervoltage protection | Battery voltage is too low (below 10.5V). Recharge or replace battery. |
| 6 times, pause 1 second | Electric fan fault | Check condenser fan for obstructions or motor failure. Verify fan wiring. |
| 7 times, pause 1 second | Motor lack of phase | Check if the motor is burnt and connections are correct. |
| 8 times, pause 1 second | Compressor over heated protection | Ensure adequate airflow around the compressor and condenser. Check refrigerant levels. |
| 9 times, pause 1 second | Pressure switch protection | Indicates abnormal system pressure (too high or too low). Consult a technician to check refrigerant levels and system integrity. |
General Troubleshooting Tips:
- No Cooling: Check power supply, refrigerant level, and compressor operation.
- Weak Airflow: Inspect evaporator fan and air ducts for obstructions.
- Unusual Noises: Identify the source of the noise (fan, compressor) and inspect for loose parts or damage.
9. Warranty and Support
Specific warranty details for the NEKPOKKA 12V Universal Electric Car Air Conditioner Compressor are typically provided at the point of purchase or within separate documentation. Please retain your proof of purchase for warranty claims.
Customer Support:
For technical assistance, troubleshooting beyond the scope of this manual, or warranty inquiries, please contact NEKPOKKA customer service. Many users have reported positive experiences with the manufacturer's responsiveness and helpfulness.
Refer to the contact information provided with your product packaging or on the official NEKPOKKA website for the most current support channels.