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1. INTRODUCTION
This manual pertains to a Duramax Marine® BOX COOLER.
The manual contains instructions for a correct and safe
installation, operation and maintenance of the box cooler.
●
Read this manual completely before starting any
work on the box cooler and before using the box
cooler.
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●
Follow all instructions in this manual. Failure to do so
can result in injuries, defects, accelerated wear and
other material damage.
●
Make sure you understand this manual. Contact
Duramax Marine® with any questions. Installation,
operation or maintenance of the box cooler without
understanding this manual can be dangerous and is a
misuse of the box cooler.
●
The manual is an integrated part of the box cooler.
Therefore, keep this manual available near the box
cooler for future reference and during the entire life
cycle of the box cooler (e.g. for maintenance and
troubleshooting).
1.1.
SAFETY
In the relevant sections the safety related items are
indicated by a
safety alert symbol
.
This is the safety alert symbol
It is used to alert you to potential physical injury
hazards.
Ø
Obey all safety messages that follow these
symbols to avoid possible injury.
Severe water leakage
The mounting frame and the tube bundle are part of
the vessel's hull.
Ø
Do not remove the (collar) bolts or the tube
bundle when the vessel is afloat!
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Besides this manual, also the installation manual of the ICAF
system may be supplied with the box cooler. Study this manual as
well and follow all relevant instructions.
2. PRODUCT DESCRIPTION, INTENDED
USE, WARRANTY
2.1.
PRODUCT DESCRIPTION
The purpose of a box cooler is to dissipate heat caused by
various processes on board of the ship.
The box cooler tubes are positioned inside a sea chest with
inlet and outlet slots for outboard water.
The U-‐tube bundle is therefore surrounded by water (see
fig. 1a).
Engine cooling water (or other liquid that needs to be
chilled) is pumped through the tubes of the box cooler and
chilled by the forced circulation of outboard water when
the vessel is sailing. This eliminates the entire secondary
raw water cooling system (pumps, filters, valves, piping,
etc.).
When the vessel is in idle position, water circulation in the
sea chest is caused by natural circulation. Natural
circulation is caused because of the differences in the
specific mass of water due to a temperature gradient.
Instead of one section, the box cooler may also be
executed with two or three sections (see fig. 12b).
The aluminium brass tubes can be coated with a heat
cured duroplast coating. This prevents galvanic corrosion
of the carbon steel sea chest (which is the less noble
metal) in seawater.
The heat cured duroplast coating also helps to prevent
stray currents and protects the box cooler from under-‐
deposit corrosion, which can develop under marine fouling
or other deposits.
Figure 1a. Transverse mounted box cooler.
Water
cover
Tube bundle
Sea
chest
Outlet
slots
Inlet slots
Top plate
