Troubleshooting a DeVilbiss F5020

Whether you have tires or other inflatables that need to be aired up regularly, or if you use air-powered tools like drills or wrenches, having a good air compressor is practically a must. The DeVilbiss F5020 is an oil-lubricated, single-stage air compressor. The F5020 features a pressure switch, safety valve, tank pressure gauge and a quick connect connection for air tools. If the compressor malfunctions, there are symptoms that can be diagnosed and corrected at home without having to send the unit to a shop.

Wrench
Brush
Drip pan
Compressor oil
Pliers
Air filter cover

Instructions

- 1
  Check to make sure the tank is drained after each use. If it isn't, water can condense inside the tank and cause rust, which can make the tank rupture or explode. Turn the power lever to "off," pull the regulator knob and make sure outlet pressure is adjusted to zero. Pull the safety-valve ring to bleed the tank down to 20 PSI.
- 2
  Open the drain valve on the bottom of the tank by turning it to the left. To unclog the drain valve, bleed all air from the tank and remove the valve with a wrench. Clean it with a brush and put it back in.
- 3
  Open the oil-fill cap and check to make sure the oil level is OK. If not, add Porter-Cable PAS1 compressor oil to the top of the fill hole. Do not use standard motor oil.
- 4
  Check to make sure oil is not dirty. If it is, change it. Do this by taking off the DeVilbiss drain plug at the bottom of the compressor tank with a wrench and allowing the old oil to flow into a drip pan. Place the drain plug back in with a wrench, open the oil-fill cap and add compressor oil.
- 5
  Use a pair of pliers to remove the air-filter cover. Pry the filter out. If it is dirty, replace it with a new one. Use the pliers to put the filter and filter cover back in place.

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