CleaverBrooks FLX Series Operation, Service And Parts Manual page 31

Pressure Vessel Care Chapter 3
Tightly close all connections and apply a small positive
pressure to compensate for the vacuum that will develop as
the unit cools to room temperature. Internal water pressure
should be maintained at greater than atmospheric pressure.
Nitrogen often is used to pressurize the vessel.
The boiler water should be tested weekly as long as the unit
is in storage. Additional chemicals may be required to
prevent internal corrosion. If more chemicals are added, it is
desirable to circulate the boiler water for a short time by
means of an external pump.
Contact your local Cleaver-Brooks authorized representative
for water treatment chemicals or assistance.
750-364 3-9