C-Series Book - Industrial Engine Service

level for the system to operate as a thermosyphon
system. If the coolant level should
fall below the bottom of the radiator, the
system will function as an ebullient system
and the low water level safety switch will
protect the engine from overheating.
In some cases it is desirable to operate
the system as an ebullient cooling system
with the coolant level 1"-2" below the
bottom header plate of the radiator during
extreme cold temperatures. This in turn
will allow the engine to run at a higher
temperature helping to minimize sludging
and condensation in the crankcase. When
ambient temperatures rise to summer times
levels, fi ll the system to a level visible in the
gauge glass in the hose and operate as a
thermal-siphon cooling system. This system
operates at 4 pounds pressure just like the
pressure condensing cooling system.
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1-800-331-3662 ARROW ENGINE COMPANY
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