1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your WIPCOOL C28T Crankshaft-Driven HVAC Coil Cleaning Machine. Please read this manual thoroughly before using the product and retain it for future reference.
2. Safety Information
WARNING: Failure to follow these safety instructions may result in injury or damage to the product.
- Always wear appropriate personal protective equipment (PPE), including eye protection, gloves, and hearing protection, during operation.
- Ensure the power supply matches the machine's requirements (100-120V, 50-60Hz).
- Do not operate the machine in wet conditions or near flammable liquids or gases.
- Keep children and bystanders away from the operating area.
- Never direct the spray gun at people, animals, or electrical equipment.
- Disconnect the power supply before performing any maintenance or cleaning.
- Protect the unit from freezing temperatures. Do not leave it in subzero conditions.
3. Product Features
The WIPCOOL C28T is a robust HVAC coil cleaning machine designed for professional use. Key features include:
- Crankshaft-Driven Pump: Equipped with ceramic-coated pistons for extended service life and continuous operation, ensuring industrial durability.
- Adjustable Pressure: Pressure can be easily adjusted from 72 to 406 PSI using the control knob, allowing for precise cleaning of both indoor and outdoor AC coils without causing fin damage.
- Oil Level Sight Glass: A large sight glass provides easy inspection of oil condition, facilitating timely oil changes and extending pump life.
- Compact and Portable Design: Lightweight and designed for easy one-hand carrying, making it convenient for transport to various job sites, including rooftops.
- Self-Priming Chemical System: Features a self-priming design and includes a chemical pickup tube kit, ready for both water and chemical cleaning applications.
- Auto Start/Stop System: Enhances efficiency and extends motor life.

Image: The WIPCOOL C28T cleaning machine, showcasing its compact design and connections.

Image: Internal view highlighting the crankshaft-driven pump with ceramic-coated pistons for durability.

Image: Diagram showing the large visual oil window and the concept of replaceable lubricating oil for easy maintenance.
4. Package Contents
Verify that all items listed below are included in your package:
- 1. Cleaning Machine: The main unit.
- 2. Extension Wand (36cm): For extended reach.
- 3. Spray Gun: For controlling the water flow.
- 4. 1:3 Ratio Foaming Set: For chemical application.
- 5. Foaming Nozzle: For creating foam.
- 6. 0° Pinpoint Nozzle: For focused rinse.
- 7. 290° Rotational Nozzle: For versatile cleaning angles.
- 8. Outlet Hose (7m): High-pressure hose from machine to spray gun.
- 9. Inlet Hose (2m): For water supply to the machine.

Image: Visual representation of the WIPCOOL C28T cleaning machine and its included accessories.
5. Setup
- Positioning: Place the cleaning machine on a stable, level surface near a water source and a power outlet.
- Water Connection: Connect the 2m inlet hose to the machine's inlet port and to your water supply. Ensure a secure connection to prevent leaks.
- Outlet Hose Connection: Attach the 7m outlet hose to the machine's outlet port and then to the spray gun.
- Nozzle Attachment: Select the desired nozzle (e.g., 290° rotational, 0° pinpoint, foaming) and securely attach it to the spray gun or extension wand.
- Chemical Application (Optional): If using chemicals, connect the 1:3 ratio foaming set and chemical pickup tube to the appropriate port and place the tube into your chemical solution.
- Power Connection: Plug the machine into a grounded electrical outlet.

Image: Diagram illustrating the self-priming design and chemical pickup tube kit connection for chemical cleaning.
6. Operating Instructions
- Turn On Water Supply: Fully open the water tap to ensure a steady flow to the machine.
- Power On: Press the power button to turn on the machine. The auto start/stop system will activate when the spray gun trigger is pressed.
- Adjust Pressure: Use the pressure adjustment knob to set the desired PSI. Refer to the visual pressure gauge for real-time pressure readings. Lower pressure (72 PSI) is suitable for delicate indoor coils, while higher pressure (up to 406 PSI) is for robust outdoor units.
- Begin Cleaning: Aim the spray gun at the coil surface and press the trigger. Move the nozzle steadily across the surface, maintaining an appropriate distance to avoid damage.
- Chemical Application: If using the foaming set, ensure the chemical pickup tube is submerged in the solution. The machine will draw and mix the chemical for application.
- Switching Nozzles: To change nozzles, release the spray gun trigger, turn off the machine, and disconnect the power. Carefully remove the current nozzle and attach the new one.
- Shut Down: After use, release the spray gun trigger, turn off the machine, and disconnect the power. Turn off the water supply and squeeze the trigger to release any remaining pressure in the system.

Image: Close-up of the pressure adjustment knob and visual pressure gauge for precise control.

Image: Examples of different spray modes including 0° jet, wide spray, and foam cleaning.

Image: Demonstrates low pressure mode for indoor coils and high pressure mode for outdoor AC units.
Official Product Videos:
WIPCOOL C28T | Product Overview
Video: A comprehensive overview of the WIPCOOL C28T HVAC Coil Cleaning Machine, demonstrating its features and capabilities.
WIPCOOL C28T | Brazil HVAC Technician Review
Video: A review of the WIPCOOL C28T by an HVAC technician in Brazil, showcasing practical use and performance.
WIPCOOL C28T | Malaysia HVAC Technician Review
Video: An HVAC technician from Malaysia provides a review of the WIPCOOL C28T, demonstrating its application in real-world scenarios.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your WIPCOOL C28T machine.
- Oil Inspection: Periodically check the oil level and condition through the large oil level sight glass. Change the oil as recommended in the full product manual or when it appears discolored.
- Hose Inspection: Regularly inspect all hoses for signs of wear, cracks, or damage. Replace damaged hoses immediately to prevent leaks and ensure safe operation.
- Nozzle Cleaning: Clean nozzles after each use to prevent blockages and maintain spray pattern integrity.
- Storage: Store the machine in a dry, protected area. Ensure all water is drained from the system before storing, especially in cold climates, to prevent freezing damage.
- Accessories: Use only approved accessories and replacement parts from WIPCOOL.

Image: Provides visual tips for maintenance, including turning off after use, protecting from freezing, and using approved accessories.
8. Troubleshooting
If you encounter issues with your WIPCOOL C28T, refer to the following common troubleshooting steps:
- No Power: Check the power cord connection and the electrical outlet. Ensure the power button is pressed.
- No Water Flow/Low Pressure: Verify that the water supply is fully open and the inlet hose is not kinked or blocked. Check for secure hose connections. Ensure the nozzle is not clogged.
- Machine Not Starting: Confirm the power is connected and the water supply is on. The auto start/stop feature requires the spray gun trigger to be pressed to initiate operation.
- Leaks: Inspect all hose connections and fittings. Tighten any loose connections. If a hose or component is damaged, replace it immediately.
- Unusual Noise: Turn off the machine immediately and disconnect power. Check for any obstructions or loose parts. If the noise persists, contact customer support.
For complex issues or repairs, do not attempt to service the unit yourself. Contact a qualified service technician or WIPCOOL customer support.
9. Specifications
| Specification | Detail |
|---|---|
| Brand | WIPCOOL |
| Model Number | C28T |
| Power Source | AC |
| Voltage | 100-120V |
| Frequency | 50-60Hz |
| Output Power | 3/4 HP |
| Working Pressure | 72-406 PSI (Adjustable) |
| Maximum Pressure | 406 PSI |
| Maximum Flow Rate | 5 liters per minute (1.3 GPM) |
| Item Weight | 7.7 pounds |
| Product Dimensions (L x W x H) | 14.76" x 11.81" x 10.63" |
| Hose Length (Outlet) | 7 meters (275.59 inches) |
| Hose Length (Inlet) | 2 meters (79 inches) |
| Wand Length | 14.17 inches |
10. Warranty and Support
For warranty information, technical support, or to purchase replacement parts, please contact WIPCOOL customer service or visit the official WIPCOOL website. Retain your proof of purchase for warranty claims.
WIPCOOL Official Store: Visit the WIPCOOL Store on Amazon

