Fulton Electric (FB-L) Steam Boiler - Manual (Page 26)

6. The high limit pressuretrol is located on
the side of the control box and
connected to a steam pressure fitting in
the boiler by means of a copper tube.
The high limit pressuretrol will shut the
boiler off when the maximum pressure is
reached. This pressure is usually set 10
to 15 PSI above the operating pressure
-- but below--the maximum pressure of
the relief valve.
Thermostat (Optional)
1. An optional thermostat may be supplied
with your boiler. This thermostat is
located on one of the heating elements
and is factory preset at number 11. This
should not be readjusted without
consulting the factory or your local
Fulton Representative. Thermostat
serves to protect the element from
overheating. Normally only the lead
element will have a thermostat.
Blowdown Operation
1. Standard boiler configuration will have a
manual bottom blowdown operation.
Boiler blowdown should be frequent and
short duration. Perform bottom
blowdown by opening the slow opening
y-valve 2 to 3 turns and opening the fast
opening ball / knife valve for a few
seconds. The strategy should discharge
a small water volume quickly.
2. If an automatic blowdown system is
supplied, please refer to specific
cutsheets / procedures to understand it’s
operation.
3. Blowdown operation will help maintain
boiler water solids at the proper level.
NOTE
Check maintenance section for more
details.
Sight Glass Isolation Valves
1. 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 arm this capability. 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.
NOTE
To ensure that your Fulton steam boiler
is kept operating safely and efficiently,
follow the maintenance procedures set
forth in this manual.
22
Operation
Electric IOM