Maintaining a Hankison air dryer involves a series of steps to ensure optimal performance and extend the lifespan of the equipment. Performing these key maintenance tasks regularly goes a long way toward extending your machine’s lifespan and we carry all you’ll need to keep your equipment running smoothly. 

1. Regular Inspection:

• Check for leaks: Inspect the dryer, especially air connections, for any signs of leaks.
• Monitor performance: Pay attention to the system’s performance (e.g., dew point, pressure, temperature) to detect any abnormalities.

2. Change the Air Dryer Filters:

• Pre-filters and After-filters: These filters capture particles and moisture before the air enters the dryer and after it exits. Replace them regularly based on the manufacturer’s recommendations (usually every 6-12 months), or if they become clogged.
• Coalescing filters: These filters remove moisture and oil from the compressed air. Replace them when you notice a drop in performance.

3. Drain the Condensate:

• Automatic drain maintenance: If your dryer has an automatic condensate drain, inspect it regularly to ensure it is working properly and draining water as intended.
• Manual drains: For dryers with manual drain valves, check periodically and drain any accumulated moisture.
• Condensate tank inspection: Make sure the condensate tank is draining properly to prevent water buildup inside the dryer.

4. Check Refrigerant Levels (for Refrigerated Dryers):

• Ensure the refrigerant charge is adequate, as low refrigerant can reduce efficiency.
• If refrigerant levels are low, you may need to have a technician recharge the system.

5. Clean the Cooling Coils:

• Over time, dirt and debris can accumulate on the cooling coils, reducing heat exchange efficiency. Clean them regularly to maintain efficiency.
• Use compressed air or a soft brush to remove dust or contaminants. Ensure the coils are free of obstruction for optimal airflow.

6. Check and Replace Desiccant (for Desiccant Air Dryers):

• If you’re using a desiccant air dryer, check the desiccant material for signs of wear or saturation. Desiccant material should be replaced according to the manufacturer’s guidelines or when you notice reduced drying performance.
• Desiccant regeneration: Desiccant dryers may have a regeneration cycle to remove moisture. Ensure that the regeneration cycle is functioning properly.

7. Test Pressure and Dew Point:

• Regularly test the system’s air pressure and dew point to ensure the dryer is maintaining the correct conditions for your application.
• The dew point should be within the recommended range for your specific needs, typically around 40°F to 50°F for many industrial applications.

8. Verify Operation of the Heater (for Heatless and Heated Desiccant Dryers):

• Inspect the heater element regularly to ensure it is functioning. A faulty heater can affect the desiccant drying cycle.

9. Clean the Inlet and Outlet Valves:

• Clean and lubricate the valves to ensure smooth operation and prevent any air flow restrictions.

10. Check Electrical Components (if applicable):

• Inspect the electrical connections and components for any signs of wear, corrosion, or damage.
• Ensure that all wiring is intact and connections are secure.

11. Log and Track Maintenance:

• Maintain a log of all maintenance tasks and inspections, including filter changes, condenser cleaning, and other repairs. Tracking this will help you stay on top of necessary tasks.

12. Professional Service:

• Schedule periodic professional servicing by qualified technicians to ensure everything is functioning correctly. They can check for issues that may not be immediately apparent.

By following these maintenance steps regularly, you can ensure that your Hankison air dryer operates efficiently, prevents unnecessary downtime, and prolongs its lifespan. Always consult the manufacturer’s manual for specific maintenance intervals and procedures for your model.