Quick Answer

Regularly checking and changing the oil in your 50L air compressor helps maintain performance and extend the life of the machine. Always ensure the oil level is between the MIN and MAX marks and use the recommended Synthetic SAE 10W40 compressor oil.

Tip: Check the oil level before every use and carry out a full oil change after the first 100 operating hours, and then every 100 hours or 6 months, whichever comes first.

Before You Begin

For your safety:

• Switch the compressor OFF (0).
• Disconnect the mains plug.
• Allow the compressor to cool completely.
• Release all compressed air from the tank.
• Keep the compressor upright throughout the procedure.

Important: Operating the compressor with too little or too much oil can cause serious engine damage.

Oil Specification

Use only the recommended oil:

• Synthetic SAE 10W40
• Suitable for operating temperatures between +5°C and +40°C

Synthetic oil provides consistent lubrication across a wide range of operating temperatures.

Important: Do not mix different oil grades or types.

Checking the Oil Level

Check the oil level before every use.

1. Place the compressor on a level surface.
2. Locate the oil viewing window (sight glass).
3. Check that the oil level is between the MIN and MAX marks.

If the oil level is below the minimum mark, add oil before operating the compressor.

If the oil level is above the maximum mark, drain the excess oil.

How to Drain the Oil

A complete oil change should be carried out:

• After the first 100 operating hours.
• Every 100 operating hours or 6 months thereafter.

Step 1

Switch the compressor OFF (0).

Disconnect the mains plug.

Allow the compressor to cool completely.

Release all compressed air from the tank.

Step 2

Place a suitable container underneath the oil drain plug to collect the used oil.

Important: Used oil must never be poured down drains or disposed of with household waste.

Dispose of used oil responsibly in accordance with your local hazardous waste regulations.

Step 3

Using an AF24 open-ended spanner (not supplied):

• Loosen the oil drain plug.
• Remove the plug carefully.

If required, tilt the compressor slightly to allow all of the oil to drain completely.

Step 4

Once all the oil has drained:

• Refit the oil drain plug.
• Tighten it securely using the spanner.

You are now ready to refill the compressor with fresh oil.

How to Add Oil

Step 1

Unscrew the oil filler plug by turning it anticlockwise.

[Insert image of oil filler plug]

Step 2

Slowly pour Synthetic SAE 10W40 oil into the oil fill opening.

Fill until the oil reaches a level between the MIN and MAX marks on the sight glass.

Do not overfill.

Step 3

Refit the oil filler plug by turning it clockwise until secure.

Wipe away any spilled oil before operating the compressor.

Important Maintenance Tips

• Check the oil level before every use.
• Always use Synthetic SAE 10W40 oil.
• Never operate the compressor with low oil.
• Never overfill the crankcase.
• Dispose of used oil responsibly through an authorised recycling or hazardous waste facility.

Frequently Asked Questions

What type of oil should I use?

Use Synthetic SAE 10W40 compressor oil unless otherwise stated in your user manual.

How often should I change the oil?

Carry out the first oil change after 100 operating hours, then every 100 hours of operation or every 6 months, whichever occurs first.

Can I overfill the compressor with oil?

Yes. Too much oil can cause poor performance and may damage internal components. Always keep the oil level between the MIN and MAX marks.

Can I use engine oil instead of compressor oil?

Only use the oil grade recommended by the manufacturer. Using unsuitable oil may reduce performance and damage the compressor.

How should I dispose of used oil?

Used oil is classed as hazardous waste and should be taken to an approved recycling or waste disposal facility. Never pour used oil into drains or onto the ground.