Cooled fluid passes through the center of
the tube head, through piping, to the retract valve.
Two kidney-shaped manifolds (one inlet and one
outlet manifold for the coolant to flow) are bolted
to the outer face of the tube head. Saltwater
piping leading to and from the inlet and outlet
manifolds has shutoff valves, one intake and
one discharge, that are used to throttle the flow of
salt water and maintain the desired fluid
temperature. Shutoff valves are also provided
in the fluid inlet and outlet lines to provide a means
of isolating the fluid cooler in the event of
cooler leakage, and a bypass valve is provided to
direct the fluid from the accumulator to the retract
valve when the cooler is isolated.
To prevent
corrosion within the cooler, replaceable anodes are
installed at both the saltwater inlet and outlet
manifolds. These anodes are periodically inspected
and
replaced
according
to the
applicable
maintenance requirement card (MRC). A fluid
temperature indicator is located on the engine
control panel.
Auxiliary Air Flasks
The auxiliary air flask provides a means of
storing ship’s air at 3,000 psi. In the event of a
ship’s air system failure, the air stored in the
auxiliary air flask can be used to recharge the
arresting engine.
The air flask is a cylindrical container with
hemispherical ends.
One end of the air flask
is provided with a pipe tap for connecting an
air line,
which is used for charging
and
venting.
A drainage vent is located on the
underside of the air flask to drain condensate
water.
Air can be supplied to the air unit of the
arresting engine from the auxiliary air flask by use
of the charging valve mounted on the main control
panel.
Main Control Panel
The control panel is the control center for the
arresting engine. (See fig. 3-12.) It provides a
means for the operator to centrally regulate the air
pressure in the system, keep a check on the fluid
temperature, and energize the electrical system.
The control panel is also equipped with a cable
anchor damper light box.
Figure 3-12.–Engine control panel.
3-16
