Maintenance & Repair
46
6)
Run the pressure washer in cold mode for 1 to 3 hours, recirculating the
cleaning solution. CAUTION: 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.
Figure 18
Inspect heating coil
and desoot as
needed
Inspect and desoot coil annually
.
Most coils never require desooting. However, poor grades of fuel oil or
inadequate combustion air will cause heavy soot build-up on the outside
surface of the heating coil tubing. These deposits will insulate the coil,
which then restricts air flow through the heat exchanger and further
aggravates the soot build-up.
If soot has built up on the exterior of the coil tubing, clean as follows:
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 and lids 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.
Figure 19
