holding plate rises to –1°C (30°F) and stops when i t reaches economy level of –6°C (21°F).
“MAN-TEMP” position:
This position can be used when either shore-power is being used or if for some other
reason a higher or lower refrigerator temperature is desirable. The automatic function is
partially blocked and the temperature is regulated by means of the rheostat, clockwise for
colder and anti-clockwise for warmer. “A” indicates the holding plates temperature point for
“Accumulation”. In this mode the compressor starts but runs at low speed only to keep the
noise level as low as possible.
Indicator lights:
Green:
Power and system on, but compressor at still-stand due to
Sufficiently low temperature of the holding plate.
Green + yellow: Compressor running within the higher temperature range.
Green + red:
Compressor running on high speed within the lower temperature
range.
Green + red: Compressor running on lowest possible speed to reach selected
temperature in MAN-TEMP mode.
Flashing red: Error signal from the black electronic unit. Automatic restart after 1
minute. Select MAN-TEMP if necessary.
Flashing yellow: Low battery voltage sensor has switched off the system. Automatic
re- start occurs when the engine is running and batteries are
charged again.
Note:
After switching on, up to 30 sec. duration is required before the compressor starts. When
the engine is started, a duration of ½ to 10 minutes is required (depending on the boats
charging equipment and battery condition) before the system reacts. When the engine is
stopped, a duration of ½ - 5 minutes (depending on battery condition and level of charge) is
required before the system reacts.
Maintenance
The Isotherm boxes have a fully hermetic closed cooling system and do not require any
maintenance or refilling of refrigerant. The compressor is of domestic type and has a very
high
efficiency and an outstanding life-time. The build-in box shall be left in the boat during the
winter. (If the temperature is below freezing point, the compressor will not start).
The maintenance is reduced to periodically, not less than a year, cleaning of the condenser
from dust. Use a soft brush and no hard objects.
Keep clean inside the box. Use lukewarm water and a mild cleaner for the inside. Put the
lid, during not in operation periods, in a slightly open ventilation position.
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
12V
10.4V
11.7V
24V
22.8V
24.2V
