3-14 Scheduled Maintenance TP-5592 7/96
Cooling Systems
Closed/Heat Exchanger
In a closed cooling system, the seawater does not
circulate through the engine. Rather, the seawater
circulates through the separate chambers within the
manifold to cool the engine water. The seawater then
mixes with engine exhaust and ejects out the exhaust
outlet. See Section 1—Specifications for coolant
capacity (including coolant recovery tank), thermostat
rating, and pressure cap rating. Use a solution of 50%
ethylene glycol and50% clean, softened water to inhibit
rust/corrosion and prevent freezing.
Filling and Checking
Before filling the cooling system, close all petcocks and
tighten all hose clamps. If the cooling system requires
filling, open pressure cap on heat exchanger and add
fresh coolant until level is just below overflow tube
opening. Add additional coolant, as necessary, to
coolant recovery tank. Fill to just below the HOT (full)
mark. Maintain propercoolant level in coolant recovery
tank. TheCOLD(add)markindicatesfullwhencoldand
the HOT (full) mark indicates full when hot. Maintain
coolant level between these marks.
NOTE
Pay special attention to the coolant level. After the
coolant drains, allow time for complete refill of the
engine water jacket. Check coolant level as prescribed
in the Prestart Checklist.
WARNING
Hot coolant and steam.
Can cause severe injury or death.
Before removing pressure cap, stop generator set
and allow it to cool. Then loosen pressure cap to
relieve pressure.
Checking coolant level. Hot coolant can cause
severe injury or death. Allow engine tocool. Release
pressure from cooling system before opening pressure
cap. To releasepressure,coverthepressurecap with a
thick cloth; then slowly turn it counterclockwise to the
first stop. Remove cap after pressure has been
completely released and the engine hascooled. Check
coolant level at tank if generator set is equipped with a
coolant recovery tank.
To Next Page
Loading...
Need help?
General