General Maintenance And Care - Webster Cyclonetic SG Series Installation, Startup, Operation And Maintenance Manual

1. General
2. Physical Inspection
3. Fuel-Air-Ratio
4. Gas Fuel Systems
5. Combustion Air Fan
1. General
This burner has been designed to provide many years
of trouble free operation. The 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 oper-
ating characteristics of the burner, which can be used for
preventative maintenance.
The maintenance schedule can be used to help gener-
ate 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 prob-
lems. Valve and linkage problems can usually be detected
early on by simply watching the movement and detecting
rough uneven changes. The jackshaft, linkage and 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 ex-
posed to the high temperatures of combustion and can
have reduced life due to the thermal stress. In particu-
lar, the diffuser, gas orifices, 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
operating condition. Over time, these items will wear and
may not operate smoothly. Corrective action must be
taken.
SG Manual
H. GENERAL MAINTENANCE AND CARE
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
firmly 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 efficiency.
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.
and linkage should be operated manually to check the
movement of all components and valves. Any worn parts
should be replaced immediately.
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. Combustion Air Fan
If the fan and motor are ever removed, the following
should be observed in re-assembly.
a. There should be about 1/16" overlap of inlet cone and
fan.
b. Never re-use the fan to motor shaft set screws, always
use new screws of the same type and style to maintain
balance and fan retention.
c. When tightening the fan hub set screws, rotate the fan
to place the screws on the bottom. This way the screw
is not lifting the fan.
d. The motor shaft and fan hub must be clean and free
of burrs.
Page 18
Annually, the cam

General Maintenance and Care