Page 49JBE(X) Manual
Section G - Maintenance
G. MAINTENANCE
1. General
2. Physical Inspection
3. Fuel-Air-Ratio
4. Gas Fuel Systems
5. Oil Fuel Systems
6. FGR System
7. Combustion Air Fan
8. Inspection and Maintenance Schedule
9. Combustion Chart
1. General
This burner has been designed to provide many years of
trouble free operation. The reliability can be greatly im-
proved with some simple inspection and maintenance pro-
grams.
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 oper-
ating 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 com-
mon to integrate the boiler and burner log, so that all com-
ponents 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 prob-
lems. For example, leakage can usually be seen early with
a small buildup of oil . Valve and linkage problems can
usually be detected early on by simply watching the move-
ment and detecting rough uneven changes. The jackshaft,
linkage and valve movement should occur smoothly with
no rough jerks.
The ame condition can often be a good indicator of the r-
ing head. If the ame does not look correct, there may be
a problem with the hardware. The ring head is exposed
to the high temperatures of combustion and can have re-
duced life due to the thermal stress. In particular, the dif-
fuser, oil nozzle, gas spuds, gas manifold, refractory and
burner mounting plate should all be inspected.
3. Fuel-Air-Ratio Controls
The fuel-air-ratio controls must be maintained in good op-
erating condition. Over time, these items will wear and may
not operate smoothly. Corrective action must be taken.
There are several different types of controls and the cor-
rective action of each could be different. The following
general guidelines can be used for initial steps.
Linkage based controls should be inspected for wear. If
there is any noticeable play in the linkage rod ends or
shaft bearing, they should be replaced. Likewise, any
control valves that exhibit sloppy or hard to turn move-
ment should also be replaced.
Fuel cams should have adjusting screws that are held
rmly in position and can not move due to normal vibra-
tions. The moving parts must be in good condition with
no noticeable wear or play. Worn connections will result
in hysteresis and reduced combustion efciency.
The cam and jackshaft should be visually checked on a
frequent or daily basis for obvious problems, including
free movement, no loose parts and correct position of
components.
On a monthly basis, the linkage and cams should be in-
spected for wear and loose parts. Annually, the cam
and linkage should be operated manually to check the
movement of all components and valves. Any worn parts
should be replaced immediately.
If the burner will be operating for extended periods on
gas, the oil gun should be removed to prevent the oil
nozzles from “coking” due to the heat of the gas ame.
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
8) for frequencies.
The drip leg should be cleaned annually.
Monitoring the outlet gas pressure from the regulator will
verify this control is working properly.
5. Oil Fuel System
The oil system has additional components that require
regular maintenance, depending on the type of system
used.
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 tight and in good condition
c. The oil strainer should be checked and cleaned pe-
riodically. 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 bas-
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