Atlas Copco Aftercooler TD 150

Is the aftercooler isolated from the compressed air net?

Depressurize the aftercooler by opening the manual drain valve.

Unscrew the bowl. A whistling noise will warn you if the aftercooler is not completely depressurized. If this occurs, the bowl must be screwed back and the venting continued.

After removing the bowl, unscrew the nut and remove the drain valve assembly.

Check for clogging of the drain hole. Clean as required. Inspect the drain valve assembly.

Reassemble the drain valve, install it in the bottom of the bowl and lock it with the nut.

Check and, if necessary, replace the O-ring.

Apply a small amount of acid-free vaseline on the O-ring and on the thread of the bowl. Screw home the bowl.

Repressurize and check for leaks.

Check that the manual drain valve is closed

During operation, check that the automatic drain is operative without air leakage

Regularly open the manual drain valve for approximately 10 seconds to discharge condensate and possible impurities

Sign off on the daily drain valve discharging

Cleaning on the air side (surface/outside)

Cleaning is done with compressed air or water. The direction of the cleaning jet must be parallel to the fins to avoid damaging them.

The cleaning effect can be increased by adding suitable cleaning agents.

Make sure that the cleaning agent does not attack the cooler materials.

Oily and greasy contaminations can be washed off with a steam or hot water jet. The jet should be set at low force to prevent deformation of the fins.

The drive motor must be protected against penetration by moisture, steam, water and dirt during the cleaning process.

The cooling system must be dried thoroughly before being restarted.

Cleaning the inside of the cooler

The process passages must be rinsed with a suitable cleaning agent when soiled. The cleaning agent must be suitable for the cooler material and compatible with the medium to be cooled.

Warning: Always wear protective gear while performing maintenance.

If the cooler is not clean, proceed with the following steps.

Remove any dirt with a fibre brush. Never use a wire brush or metal objects.

Clean by air jet in reverse direction of normal flow.

Is it necessary to wash the cooler?

If washing is necessary, proceed with the following steps.

Wash the cooler with diesel fuel or a cleansing agent.

Use a spray gun to apply the solvent to the fins.