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Installation
Before beginning this installation
•
Open engine hatches and operate bilge blowers for 10
minutes to remove dangerous fumes and hydrogen gas.
•
Disconnect all AC power sources.
•
Disconnect negative battery cables from all batteries.
safety goggles, gloves and long sleeved shirt when
•
Wear
drilling or while handling batteries.
Choosing a mounting location
1. Mount this charger in an upright position only, with the
aluminum cooling fins running vertically. It is important
that the charger have at least 6 inches of unrestricted
airflow on all sides for effective cooling. Do not install
onto a carpeted, upholstered, or varnished surface.
2. Although this charger is ruggedly designed, avoid
mounting it in an areathat is open to rain, snow or spray.
3. Avoid mounting this charger within 3 feet of a compass,
TV or FM radio.
4. Select a mounting location which will allow the shortest
DC wires between the charger
Do not mount this unit directly over your batteries
5.
because their corrosive fumes can damage the circuitry
inside this charger.
6. Be sure that the mounting location will allow access to
the connections on the charger after it is mounted.
-5-
-
and the batteries.
Preparing the mounting location
1.
Hold the battery charger against the surface wh ~re you
are planning to mount
it. (Be sure that you will bc able to
drill holes through this surface later without damage to
wiring, tanks or other equipment.) Using a penc:1, mark
the locations of the battery charger's four mounting holes
onto the mounting surface
2.
Drill four 1/4" holes through the mounting surface at the
locations you marked with pencil.
Note:
Do not mount the charger until ~~you
made thefollowing electrical connections
Electrical connections
Installing the Guest 2815M1115 or 2815M/230
making two different types of electrical connections:
AC
(12 volt battery system) and the
Planning the DC connections
You can configure the Guest 281 SM charger to main:ain one
or two separate 12 volt batteries. There are several ways to
connect this charger into your present 12 volt system.
The simplest and most widely used connection metho i is:
1. Run one red DC wire from each of the charger's :wo DC
(+)
outputs to the positive posts ofeach battery.
positive
When charging a single battery, you
charging outputs to the battery.
2. Connect a black DC wire from the charger's ommon
negative
terminal to the engine block's ommon
(-)
negative ground terminal.
This method is illustrated in diagram 2 on page 7.
-6-
have
~equires
DC
the
(dockside power)
conncct both
must
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