Coil Descaling, Coil Desooting | Panasonic M157594J instruction

Maintenance Instructions

Coil Descaling

In hard water areas, scale build-up within the heating coil will occur. Scale deposits will decrease the water temperature rise and may eventually clog the heating coil.

1.Mix coil cleaner in a 5 gallon bucket and elevate the bucket so it is higher than the unloader.

2.Attach the high-pressure hose to the high-pressure water outlet on the machine. Do not hook up the spray gun.

3.Place the other end of the high-pressure hose in the 5 gallon bucket.

4.Attach a short length of hose to the garden hose inlet on the pump.

5.Prime the pump by filling the hose with water, then place the end of the hose in the bucket.

6.Run the pressure washer in cold mode for 1 to 3 hours re-circulating the cleaning solution.

Warning: Do not run the burner.

7.Dispose of the cleaning solution where it is not harmful to animals or the environment.

8.Flush with fresh water and clean the inlet strainer when finished.

Coil Desooting

Poor grades of fuel oil or inadequate combustion air will cause heavy soot build-up on the outside surface of the heating coil. These deposits will insulate the coil. This will restrict the airflow through the coil, further aggravating the soot build-up.

Most coils will never require desooting. However, to desoot a coil...

1.Wear protective clothing, goggles, and gloves.

2.Disconnect high-pressure hose on inlet side of coil and thermostat on outlet side of coil.

3.Remove the lid and insulation lid from the heating chamber and hoist the coil out. Be careful, the coil weighs 125 lbs.

4.Clean the coil.

5.Reassemble the coil to the machine. Make sure the white insulation remains in place.

6.Reattach high-pressure hose and thermostat, and make sure all fittings are tight before using the machine.