4.2 Door front panel
The front panels on the doors can be replaced or additional
standard front panels in white, teak, mahogany or cherry can be
mounted on top of the standard panel.
Use a screwdriver or a knife as a lever and pull off the lower door
profi le. Unscrew the three screws holding the door lock.
Mount the extra panel on top of the existing one, fasten the door
lock again and push in the lower door profi le.
See fi g. 5 and 6.
The INOX model has doors in stainless steel and it has not
exchangeable door fronts.
3.1 Battery voltage sensor
To protect the batteries from becoming completely discharged, a
battery voltage sensor switches off the compressor automatically
at the following levels:
System Voltage
Cut-out
Cut-in
12 V
9.6 V (10.4)
10.9 V (11.7)
24 V
21.3 V
22.7 V
If the bridge between C and P is cut off, values within the () are
valid.
4.3 Electrical connections/wiring for power supply
CR 195 is available in two versions, one is equipped with
Danfoss 12-24 VDC electronic units and the other is equipped
with AC-DC electronic units. It is important that following points
are considered:
DC (12 or 24 volt)
The electronic unit must always be connected direct to the
battery poles. Connect the positive/plus to + and the negative/
minus to - on the battery. Without proper positive/negative
connections, the electronic unit will not work - it is protected
against reverse battery connection.
For protection of the installation, a fuse for each compressor
must be mounted in the positive cable as close to the battery as
possible.
A 15A fuse for a 12V power supply and a 7.5A fuse for a 24 volt
circuit are recommended. If a breaker box connection is used, it
should be rated to a minimum of 30A.
Avoid extra junctions in the power supply system to prevent
voltage drop from affecting the battery protection setting.
The light is connected to battery power on the electronic unit and
the bulb must be selected 12 or 24 volt. Both types are included
in the delivery.
See wiring diagram fi g. 8 valid for both compressors.
AC (100-240 volt)
The live and neutral wires must be connected to the terminals
marked
L
and
N
on the electronic unit. Nominal voltages from
100 to 240 VAC 50/60 Hz. Upper safety cut out limit is 270 VAC
and lower limit is 80 VAC.Earth connection is to be placed on the
compressor foot near the electronic unit. There is a hole drilled
in the foot for this purpose, use a 5/32” screw and nut and a ring
cable shoe on the wire.
Connection of mains power plug must fulfi l valid electrical safety
regulations and properly fused with 4A. Wire gauge, AWG18.
General AC/DC
Both AC an DC power supply can be connected to the electronic
unit at the same time. AC will be preferred power supply source
if that is the case. If the AC power supply is disconnected, a
time delay of 1 minute will be activated before the compressor
continuous on DC power supply. If AC power supply is
established there will be no delay in compressor operation, when
power supply is shifting from DC to AC.The light power supply is
connected to A and C. The output voltage on A and C is always
regulated to 12 VDC. A 12 VDC bulb must be used for both 12
and 24 VDC power supply systems.
See wiring diagram fi g. 9 valid for both compressors but the
freezer does not have inner light.
3 Maintenance
The Isotherm refrigeration systems have a fully hermetic closed
cooling system and do not require any maintenance or refi lling of
refrigerant.
The compressor is of domestic type and has a very high
effi ciency and an outstanding life-time. The refrigerator/freezer
shall be left in the boat during the winter. (If the temperature
is below freezing point, the compressor may not start). The
maintenance is reduced to periodically, not less than a year,
cleaning of the condensers from dust. Use a soft brush and no
sharp tools. Keep the cabinet inside clean. Use lukewarm water
and a mild detergent for cleaning the inside. Put the doors,
during not in operation periods, in their slightly open ventilation
positions. Release the catch on the door for this purpose with a
coin or a small screwdriver (fi g. 1 and 2) (not valid for Stailess
steel version, “INOX”). Take out the bulb from the internal light to
avoid power consumption or switch off a main switch if there is
one installed connected to the refrigerator/freezer power supply.
(Fig 3 and 4)
4 Installation instructions
Many boats have a space which is intended for a fridge. The
Isotherm Cruise fridge has been designed to suit the general
dimensions normally used for this purpose.
The compressor should normally stand upright in the boat, but
will operate at an angle of heel up to 30° and for short periods
even more. The compressors on CR 195 are attached by its rear
side.
The refrigerator/freezer unit has a three side mounting fl ange to
fasten the unit in place. It must also be standing on its feet.
See installation dimensions on fi g. 10.
Avoid mounting close to a heat source, like gas ovens and
heaters. Also avoid a position allowing direct sunshine on the
refrigeration/freezer unit.
The mounting positon should be dry and protected from
splashing water.
4.1 Ventilation
It is very important that the compressor/condenser units
are well ventilated and that cold air can enter at the bottom,
pass behind the fridge/freezer and warm air can leave at the
top in the area where it is mounted. The natural fl ow of air
from below and upwards behind the fridge can be increased
by arranging ventilation openings at the rear.
Make sure there is a free area of 23 - 28 sq.in. below and behind
the refrigerator/freezer to allow ventilation air to pass behind from
below. See fi g 5.
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