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Compressor unit
The compressor unit should be fi tted in a horizontal position
in a suitable place. If it is positioned in a stowage place a
guard may be required for protection. The unit will operate
continuously at angels of up to approx. 30°.
The unit should be screwed down well using all fastening
holes in the bottom plate to withstand all kind of rough seas
and healing angles.
Installation can often be simplifi ed if the quick coupling
connections on the piping and the compressor unit are
screwed up tight before the compressor unit is fi nally
tightened down in position. Do not remove the protective
caps from the couplings until immediately before that are
about to be done and save them for possible future use. The
quick coupling connections can be turned by hand to the
bottom before continuing tightening steadily and quickly with
spanners. While tightening it is important that the male part
of the connection stationary is held with a 21 mm spanner
so that it does not rotate and damage the thin capillary
tube (See fi g. D). Tighten the couplings up hard. Use fi xed
spanners 21 and 24 mm for the couplings.
Fig. D
Sea water connections
The water inlet on the water cooled condenser must be
connected to a through-hull fi tting that will ensure that cooling
water can be fed to the water pump even when sailing.
Mount the water fi lter on the water inlet. The outlet can be
connected to an existing through hull fi tting such as the drain
for the sink if this always is kept open.
Best solution is to mount also a separate outlet fi tting to
always be sure there is a free water fl ow for the cooling
circuit.
If the water fl ow is interrupted the refrigeration unit will stop
after a wile and indicate a malfunction.
The compressor unit can be installed up to 2 m (6½ ft.) above
the water level. To achieve a near-silent operation, a voltage
reducer is fi tted to the power supply to the water pump.
This reduces the speed of the pump and the amount of water
fl owing through it. It also reduce the noise level. The pump
speed vary depending on the water condenser temperature.
Water out
After the refi geration unit has been installed, the water pump
will at the fi rst start up run on a higher speed for a while to
pick up water faster. This will happen also when the unit has
been powerless.
Clean the fi lter with short intervals, it is important to keep the
Water in
water condenser free form dirt, which can reduce the water
fl ow and cooling capacity.
Zinc anode
Fig. E
Control panel
The control panel should be positioned where it can be
easily seen and within reach of the 4 m (13 ft.) cable from
the electronic unit on the compressor. Thehousing can be
mounted using the accompanying long screws. A 12 mm
(½") hole should be drilled for the cable behind the panel.
The panel can also be let into its surrounding by removing
the plastic housing and attaching it with the accompanying
screws.
Fig. C
Electrical wiring
Run a positive lead from the + terminal of the battery or the
battery main switch across the accompanying 15 A fuse in a
12 volt system (alternatively 7.5 A in a 24 volt system) and a
negative lead from the – battery terminal.
Connect the power leads to their tab-type terminals on the
electronic unit. Be sure not mixing up plus and minus. Minus
is above the plus terminal on the red electronic unit.
A spark occurs when the power leads are connected. This
is because the electronic units contain capacitors, which are
then charged.
Avoid connection of the power cables through switches on a
separate switch panel if they are not designed for at least 20
A load.
A battery charger must never be connected directly to the
refrigeration system without having a battery connected in
parallel.
Use cables of suffi cient cross sections, see table below:
Cable area
mm²
2.5
4.0
6.0
10.0
Connect the temperature sensor cable from the holding
plate in the box to the electronic unit in the upper modular
connector.
The control cable from the control panel is connected in the
lower modular connector on the electronic unit. (Fig. G)
MAN.TEMP
ECONOMY FREEZE
ASU
A
NORMAL.AUTO
Automatic Start Up
Gauge
Max. cable
length m/ft. 12V
12
2.5/8
10
4/13
10
6/19
8
10/33
Max cable length
m/Ft. 24V
5/16
8/26
12/38
20/66
6
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