VMP IOM
29
Operation
Boiler Controls
a. Flame safeguard burner control
This is the main control in the panel box.
The programmer in conjunction with a
sensing device, either a flame rod or an
ultra violet scanner, "supervises" the
ignition sequence - proves the flame is
satisfactory - and finally "monitors" the
established flame. Should any fault
occur, either during the ignition
sequence or during normal running, the
programmer will immediately go to
"lock-out" and the burner will shut down.
b. Low Water Cut-Off - Probe Type
Cuts off the unit when water level is too
low after a 3 second time delay to avoid
nuisance shut downs. As a standard
feature, Fulton boilers are equipped with
ASME CSD-1 Code controls which
include a manual reset feature on the
burner low water cut off relay and ASME
CSD-1 Code controls also feature an
independent second low water cut off
relay. Press the low water reset button
and the boiler will start.
CAUTION
Do not tamper with the safety features of
the low water safety cut out.
c. Pressure Relief Valve
Limits the maximum operating pressure
of the boiler.
d. Operating Steam Pressure Control
Located in the control panel box and
connected to the steam pressure gauge
assembly by means of a copper tube.
The pressure control regulates the
on/off cycle of the burner, shutting the
burner off when maximum pressure is
reached and switching on when the
steam pressure falls below a
predetermined level.
e. Sight Glass Isolation Valves
The brass sight glass isolation valves
are equipped with an internal ball check.
In the event that a sight glass should
break, the ball will seat, preventing the
discharge of steam and water. The
brass valve stem must be opened fully
to enable this feature. If the valve is in
any other position than full open, the ball
will not seat. For added safety all Fulton
boilers are equipped with gauge glass
protectors.
f. High Limit Pressure Control
Located in the control panel box and
connected to the water column
assembly by means of a copper tube.
The pressure is usually set 10 to 15 PSI
(.703 - 1.054 kg/cm
2
) above the
operating pressure, but below the
maximum pressure of the pressure
relief valve. If the pressure exceeds the
high limit pressure control setting, the
boiler will automatically shut off. The
high limit pressure control must be
manually reset by depressing the
plunger located on top of the control.
g. Air Pressure Switch
Mounted on the burner scroll, this switch
is operated by the pressure of air
entering the burner through the throat of
the scroll. Absence of air, or insufficient
pressure, will prevent the switch
completing the circuit, thus preventing
the burner from operating.
WARNING
When stopping the boiler for any
extensive repairs, shut off main
disconnect switches on both the boiler
side as well as the feed water side.
NOTE
To ensure that your Fulton Steam Boiler
is kept operating safely and efficiently,
follow the maintenance procedures set
forth in Section 4 of this manual.
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