Isotherm 4201 ASU Magnum Instructions D'installation Et D'emploi page 4

Indicator lights
Green Power and system on, the compressor is
stand-still due to suffi ciently low tempera-
ture of the holding plate.
Geen+ yellow Compressor running within the higher
temperature range.
Green + red Copressor running within the lower tempe-
rature range.
Green + Compressor running at lowest possible
yellow + red speed to reach selected temperature in
MAN.TEMP working mode.
Flashing yel- Error signal from the elctronic unit. Auto-
low + red matic re-start after 1 minute.
Flashing Low battery voltage sensor has stopped
yellow the compressor. Automatic re-start occurs
when engine is started to charge batteries
again.
Note: The compressor will start 30 seconds after switching
on. When the engine is started, ½ to 10 minutes are required,
depending on the boats charging equipment and battery
condition, before the system reacts. When the engine is
stopped, ½ to 5 minutes are required, depending on battery
condition and level of charge, before the system reacts.
Water pump system
The water pump power supply is connected to a voltage
reducer unit for fl ow regulation to give enough cooling with
lowest possible power consumption and noise level.
Maintenance is limited to a periodically, at least once a year,
check and when so is needed exchange of the zinc anode
placed in the Tee connector.
.
Technical data
Type designation:
Capacity 4201:
Capaccty 4701:
Compressor:
Voltage:
Low voltage protection:
Current consumption:
Fuse:
Refrigerant:
Water pump:
Dimensions:
Weight:
Specifi cations are subjet to change without prior notice.
3
4201, 4701
Holding plate 355x280x60 mm (14x11x2.3 inches) suitable for refrigeration boxes up to 200
litres (7 cu.ft.)
Holding plate 355x280x90 mm (14x11x3.5 inches) suitable for refrigeration boxes up to 240
litres (8.5 cu.ft.)
Danfoss BD50F
12/24 volt
Cut out at 10/21 volt. Automatic re-set when voltage has been above 12/24 volt for more than
30 sec.
Low speed approx 4A (12 volt)
High speed approx. 6.5A (12 volt)
Stand-by (green LED on) 25 mA (12 volt)
System switched off 16 mA (12 volt)
12 volt: 15A, 24 volt 7.5A type car blade fuse (DIN 75281/SAE J 1284)
R134a, 130 gram
Flow: 3 l/min (0.6 GPM)
Compressor unit 390x200x175 mm (15.4x7.8x6.9 inches)
Holding plate, see above.
4201: 19 kgs (37½ lbs)
4701: 23 kgs (46½ lbs)
It is also recommended to exchange the pump valve kit once
every second year. As the valve material ages the seals will
no longer perform.
Clean also periodically the water fi lter, interval depending on
the water quality.
Drain the water system, including the pump and fi lter, if
temperatures below freezing point are expected, or fi ll up
properly with anti-freeze.
Maintenance
If the quick couplings have been tightened correctly during
installation, the totally hermetic system will not require re-
fi lling of refrigerant. Maintenance is limited to removing dust
and dirt from the compressor and condenser unit, regular
check-up and re-placement of the zinc anode, cleaning
water fi lters, defrosting the holding plate when required and
keeping the box inside dry and clean to prevent bad air.
It is of vital importance that the batteries and the charging
system are kept in good condition.
The complete system should remain on board during the
winter, but it may not always be able to be started at ambient
temperatures below freezing.
Safety
For your own and others safety, please read this fi rst.
When connected to shore power, ensure that the power
supply is equipped with an earth leak switch. Danger!
A battery charger must be connected to the battery, never
direct to the refrigeration system.
In addition to acid, a newly charged battery contains
explosive gas. Danger!
Never touch bare electric wiring or contacts connected to the
mains supply. Danger!
Never open the refrigerant circuit except by the quick-
couplings, which are of self-sealing type and designed for this
purpose.
The refrigeration unit must be disposed by a refrigeration
specialist for correct recycling of components and care taking
of the refrigerant.