A detailed Compressed Air Dryer SEMI ANNUAL preventive maintenance checklists
1. Safety Precautions
2. Visual Inspection
- Look for moisture or oil spots around joints and connections.
- Inspect for any hissing sounds indicating escaping air.
- Check for rust or corrosion that may signify leaks.
- Ensure fittings are properly tightened and secure.
- Examine the exterior for dents, scratches, or rust.
- Look for signs of paint peeling or flaking.
- Inspect seams and welds for any signs of weakness.
- Assess the overall structural integrity of the unit.
- Check for faded or worn labels that may be hard to read.
- Verify that all safety warnings are visible.
- Ensure labels are securely attached to their surfaces.
- Replace any damaged labels as necessary.
- Inspect the housing for cracks or holes.
- Look for signs of impact damage or stress fractures.
- Check seals and gaskets for integrity.
- Assess the overall sturdiness of the housing.
- Look for visible wear on the hose surface.
- Check for any bulges or soft spots.
- Ensure all connections are tight and leak-free.
- Replace any compromised hoses immediately.
- Inspect intake and exhaust grills for blockages.
- Clear away any debris or dust buildup.
- Ensure that airflow is unobstructed in all directions.
- Check that no foreign objects are present.
- Inspect hinges and latches for proper operation.
- Ensure panels close securely without gaps.
- Look for any signs of wear on seals.
- Verify that access points are easy to open and close.
- Check for puddles or wet spots on the floor.
- Inspect piping connections for condensation.
- Look for water stains on nearby surfaces.
- Ensure proper drainage is functioning.
- Look for dust or dirt accumulation on fins.
- Check airflow passages for obstructions.
- Ensure that fins are straight and not damaged.
- Clean surfaces as necessary to maintain efficiency.
- Inspect brackets for rust or corrosion.
- Check all mounting bolts for tightness.
- Look for any signs of bending or deformation.
- Ensure supports are stable and secure.
- Check filters for dirt, dust, or blockages.
- Ensure filters are seated correctly in their housings.
- Look for tears or holes in filter material.
- Replace any filters that do not meet standards.
- Inspect insulation for tears, dampness, or mold.
- Ensure insulation is intact and securely in place.
- Look for signs of heat loss or cold spots.
- Replace any damaged insulation as needed.
- Check for illuminated warning lights or alarms.
- Ensure all indicators are functioning properly.
- Look for any signs of wear on the panel.
- Test buttons and switches for responsiveness.
3. Component Checks
- Turn off the air dryer and disconnect power.
- Access the air inlet filter compartment.
- Remove filters and inspect for dirt and debris.
- Clean filters with compressed air or replace if heavily soiled.
- Reinstall filters and ensure they are securely fastened.
- Turn off the unit and disconnect power supply.
- Access the heat exchanger area.
- Check for dust, dirt, or buildup on surfaces.
- Use a soft brush or vacuum to clean if necessary.
- Reassemble and ensure all panels are securely closed.
- Turn off the air dryer and disconnect power.
- Access the desiccant chamber.
- Inspect the desiccant for color change or clumping.
- Replace desiccant if saturated or degraded.
- Seal the chamber and restore power.
- Check oil level using dipstick or sight glass.
- Inspect oil color and consistency; look for contaminants.
- Change oil if it appears dirty or is below recommended levels.
- Follow manufacturer instructions for oil type and replacement.
- Visual inspection for cracks, fraying, or bulging.
- Check connections for tightness and potential leaks.
- Use soapy water to identify leaks; replace any damaged hoses.
- Ensure fittings are compatible and securely attached.
- Manually operate drain valves to check for blockages.
- Inspect for leaks around valve seals and connections.
- Ensure valves close completely after operation.
- Clean or replace any malfunctioning drain valves.
- Locate thermal overload switch; check for trip indicator.
- Test reset functionality; ensure it engages properly.
- Inspect wiring and connections for damage or corrosion.
- Replace the thermal overload protector if faulty.
- Inspect all electrical connections for tightness.
- Check for signs of corrosion or discoloration.
- Clean terminals with a suitable electrical contact cleaner.
- Tighten or replace any loose or corroded connections.
- Inspect the control panel for physical damage or wear.
- Check indicator lights for functionality; replace if out.
- Ensure all buttons and switches are operational.
- Clean the panel surface to prevent dust buildup.
- Test pressure switch at various pressure levels.
- Ensure switch activates and deactivates correctly.
- Inspect for leaks or blockages in the pressure line.
- Replace the pressure switch if it fails to operate.
- Verify the set pressure of the safety valve.
- Manually lift the safety valve to check for proper release.
- Inspect for leaks around the valve seat and connections.
- Replace any safety valves that do not function correctly.
- Listen for unusual sounds while the motor is running.
- Check for vibrations that may indicate imbalance.
- Inspect the motor for signs of overheating or wear.
- Lubricate bearings as per manufacturer guidelines.
- Locate all sensors and probes; remove any dust or debris.
- Use a soft cloth or brush to gently clean surfaces.
- Check calibration settings for accuracy.
- Replace sensors if they show signs of damage or failure.
Use in Manifestly