User Guide

25
Make sure the fuel tank is clean.
Water and sludge in the tank can clog
lines, filter or nozzles.
Be sure the supply line filter
(between tank and burner) is
adequate for the size of nozzle
used.
It will remove many of the small
particles which may be present in the
fuel oil or formed in the tank. Filtration
is particularly recommended for
burners using small nozzles. The
filtering element should be replaced at
each summer cleanup and the line
flushed out with oil. The Delavan line
filter should also be replaced annually.
Nozzle Cleaning — A quality nozzle
should last through a normal heating
season if reasonably clean oil is supplied
to it. And there have been cases where a
nozzle has worked several heating
seasons if it is not overheated. However,
experience has shown most service
organizations that best results can be
obtained, and more economically, by
replacing nozzles annually. To clean a
nozzle properly is a painstaking, time-
consuming job. And in the lower flow
rates, it’s practically impossible to see
whether the distributor slots are
thoroughly clean without the aid of a
microscope. In the long run, you will
save your time and the customer’s
money by a program of nozzle
replacement, rather than clean up.