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1. General
2. Physical Inspection
3. Fuel-Air-Ratio
4. Gas Fuel Systems
1. General
This burner has been designed to provide many years of
trouble free operation. Reliability can be greatly improved
with some simple inspection and maintenance programs.
One of the best tools for a good maintenance program
is to keep a log on the key parameters of the burner and
boiler. These would include operating temperatures,
pressures, inspections and preventative maintenance
activities. This document can be used to detect any
changes in the operating characteristics of the burner,
which can be used for preventative maintenance. The
maintenance schedule can be used to help generate this
log. There are also many other good references that can
be use to help develop your log. Adding check points for
other equipment into a common log can help. It is
common to integrate the boiler and burner log, so that all
components are checked at the same time.
The frequency of inspection given in the following charts
is only a guideline. Initial results should be used to adjust
the time intervals to be more frequent when problems or
potential problems are observed.
2. Physical Inspection
Listening and looking at the burner can detect many
problems. For example, leakage can usually be seen
early with a small buildup of oil. Valve and linkage prob-
lems can be detected early on by simply watching the
movement and detecting uneven changes. The valve
movement should occur smoothly with no rough jerks.
The flame condition can often be a good indicator of
the firing head. If the flame does not look correct, there
may be a problem with the hardware. The firing head is
exposed to the high temperatures of combustion and can
have reduced life due to the thermal stress. In particular,
the diffuser, oil nozzle, gas orifices, gas manifold, refrac-
tory and burner mounting plate should all be inspected.
3. Fuel-Air-Ratio Controls
The fuel-air-ratio controls must be maintained in good
operating condition. Over time, these items will wear and
may not operate smoothly. Corrective action is a must.
4. Gas Fuel System
The safety interlocks must be checked at regular inter-
vals to ensure that they provide the proper safety. See
the Inspection and Maintenance Schedule Chart (Figure
6) for frequencies. The drip leg should be cleaned
annually. Monitoring the outlet gas pressure from the
regulator will verify this control is working properly.
SC Manual
K. GENERAL MAINTENANCE AND CARE
5. Oil Fuel Systems
6. Combustion Air Fan
7. Ignitor Replacement
5. Oil Fuel System
The oil system has additional components that require
regular maintenance, depending on the system type.
.
a. Oil added to air compressor. The air compressor
has a visual sight glass showing the oil level.
This must be inspected every shift (while operating).
b. Air compressor belt should be tight and in good
condition.
c. The oil strainer should be checked and cleaned
periodically. A high vacuum reading on the
suction side of the pump (over 10") is a good
indication that the strainer needs to be cleaned.
Strainers provided by Webster will use a wire mesh
basket inside a canister. After turning the pump off
(and making sure there is no pressure on the
strainer), unscrew the yoke to gain access to the
basket. The canister does not need to be drained.
Be careful with the gasket when removing or
replacing the cover to insure a good seal. The
basket can be lifted out and cleaned with a soft
brush and cleaning solution.
d. Vacuum higher than the 10" limit on suction side
of pump. If cleaning the strainer does not
resolve this, check the other valves between the
tank and gauge for plugged or closed position.
e. Air atomized oil nozzles should be cleaned
periodically, depending on the type of operation
and the need for cleaning. Extended operation at
very low rates (less then 15% of capacity) can
cause carbon buildup on the outside of the nozzle.
This can be cleaned with a rag and cleaning
solution. If the fire is showing some deterioration
and the external surfaces are clean, then the
nozzle should be removed, disassembled and
cleaned using a soft brush and cleaning solution.
f. If the edges of the air atomizing nozzle are not
sharp, or the nozzle shows sign of wear and the
combustion is deteriorated, the nozzle should be
replaced. The part number is given on the material
list of the unit.
g. Pressure atomized oil nozzles have a filter feeding
the nozzle that can be plugged over time. The filter
can be unscrewed from the back and cleaned,
using a soft brush and cleaning solution. When the
nozzle(s) are removed from the nozzle body (BPS
nozzles), the plastic seals at the end of the nozzle
must be replaced, or the nozzle may not seal
correctly. The seal can be slid off of the nozzle and
a new one installed. Use extreme care not to cut or
nick the seal. Once the seal is on, the nozzle can
be inserted and screwed into the nozzle body.
h. If a pressure atomized oil nozzle must be replaced,
use the burner parts list to determine the Webster
part number.
Page 28
General Maintenance And Care
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