Alternate Heating COAL GUN S1000, Installation And Operator'S Manual

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19
WARNING:
If the hopper is empty while the
unit is burning, add only small
amounts of coal for the first half
hour in order to prevent ignition
of flammable gases in flue pipe
area.
THERMO ASH-MONITORING
GRATE CONTROL OPERATION
Ash that contains fuel that is not fully
combusted will be a higher temperature than ash
coming from thoroughly combusted fuel. The
Thermo Ash-Monitoring Control automatically
monitors the temperature of the ash leaving the
coal pot. This provides a feedback mechanism
for grate regulation that reduces the need for
post install adjustments.
Typically, no
adjustment other than the factory adjustment is
necessary to have the boiler perform at peak
power output throughout the burn season (a
minor on-site adjustment may be necessary
when the boiler is first installed). With the
Thermo Ash Monitoring controlled grate, it is
possible for the fire to remain lit for days during
low usage periods without having to adjust the
grate controls by hand, as would be necessary in
a timer-based grate control system.
If an ash temperature sensor is used, it should be
set at 130° for normal operation. During
periods of light demand, reducing the setting to
120° will aid in maintaining the proper level of
coal in the coal pot.
REMOVAL AND DISPOSAL
OF ASHES
Ashes should be placed in a metal container
with a tight fitting lid. The closed container of
ashes should be placed on a non-combustible
floor or on the ground well away from all
combustible materials pending final disposal. If
the ashes are disposed of by burial in soil or
otherwise locally dispersed, they should be
retained in a closed container until all cinders
have thoroughly cooled to prevent inadvertently
starting a fire.
CONDITIONING OF BOILER WATER
Proper treatment of make up water and boiler
water are necessary to prevent scale or other
deposits and corrosion within the boiler. The
absence of adequate external and internal
treatments can lead to operation upsets or total
boiler failure. Where a choice is available,
pretreatment external to the boiler is always
preferred and more reliable than treatment
within the boiler.
Instructions for feed water treatment as prepared
by a competent feed water chemist should be
followed. Do not experiment with homemade
treatment methods or compounds.
Representative samples of feed water and boiler
water need to be analyzed frequently to ensure
that they are in specification. The following
terms and guidelines are to be used in
conjunction with the advice of a water treatment
specialist.
Ph
The Ph value of your boiler water is a number
between zero and fourteen. Values below seven
are acidic while values above seven are basic.
The Ph factor is the most important factor
influencing scale forming or the corrosive
tendencies of boiler water. It should be adjusted
to between a minimum of 10.5 and a maximum
of 11.0 to prevent acidic corrosion of boiler
tubes and plates and to provide for the
precipitation of scale forming salts.
Below a Ph of 5.0 the water is acidic enough to
dissolve the steel boiler plates. Under these
conditions the steel gradually becomes thinner
and thinner until it is destroyed. At a Ph
between 5 and 9.4 pitting of steel plates will
occur at a rate dependant upon the amount of
dissolved oxygen in the boiler.