OPERATION
Power Source
-
As previously noted, the Norcold refrigerator
can be operated on either 12 volts D.C. or 120 volts A.C. If
both power sources are connected simultaneously, the refrig
-
erator will operate on 120 volts A.C.
A
special relay discon
-
nects the D.C. power. To operate on D.C. power, the A.C.
source must be disconnected, allowing the relay to switch to
12 volts D.C.
To protect the solid state components of the inverter necessi
-
tates the use of a circuit breaker in the D.C. circuit.
On A.C. operation, the transformer is protected from overload
conditions by a bi
-
metallic current limiting device. (Located in
Transformer Primary Winding) the device resets automatically
when the overload is removed.
Temperature Control
-
A single thermostat controls the op
-
eration of the refrigerator on A.C. or D.C. The control knob is
located at the upper right and to the rear of the food compart
-
ment.
The knob
is
marked
“off,
1,
3,
5,
7.”
The nearer the dial
is
set
to
“7”,
the colder the temperature becomes
in
the cabinet.
There is no need to readjust the setting of the thermostat for
dual operation. Once the desired temperature is reached, the
thermostat will control the cabinet temperature equally well on
either voltage supply.
INITIAL START
-
UP
-
Before operating the refrigerator for the
first time, check to see that the A.C. and D.C. supply connec
-
tions are correct and that the thermostat is turned to the “Off”
position.
Connect the vehicle to the external power supply of 120 volts.
The circuit breaker is located behind the kickplate or access
cover at the bottom front of the refrigerator. This circuit break
-
er will protect the inverter components when excessive cur
-
rent is drawn due to improper D.C. power supply or overload
conditions. This circuit breaker is inactive when the refrigera
-
tor is operated on 120 volts, A.C.
Turn the thermostat knob to the number
“3”
setting. The
unit should be operating. If the compressor motor cannot be
heard, place your ear against the outside of the refrigerator
door. This procedure will enable you to determine if the
swing-
motor is operating.
Allow approximately five minutes of operation and open the
freezer compartment door. Place your hand at the upper left
rear corner of the top evaporator plate. This
I
S
the area of the
evaporator that will begin cooling first. If you notice a cooling
effect at this point, then the unit
is
functioning properly.
Close the refrigerator door and allow the refrigerator to oper
-
ate on A.C. until it cycles or shuts itself off. This indicates the
thermostat is operating and that the refrigerator is cooling on
A.C. operation.
Now, disconnect the A.C. supply and open the refrigerator
door
so
that the cabinet interior will warm up and allow the
thermostat to demand cooling.
As soon as the unit compressor begins to operate, close the
refrigerator door allowing the unit to run. It should shut off or
cycle within 10 to 20 minutes indicating the D.C. operation
I
S
correct.
%
1
MAINTENANCE
OF
YOUR
REFRIGERATOR
(1)
Cleaning
Box
and Door
-
Wipe with a
soft,
dry cloth.
To remove dirt, use a cloth moistened by a warm neutral
detergent solution. Never use hot water. After cleaning,
wipe with a dry cloth.
(2)
Gasket (door cushion)
-
Wipe away dirt with a soft
cloth moistened by a neutral detergent. Do not soak the
cloth excessively. If water gets inside, the insulating effect
may become temporarily impaired.
(3)
Attachments
-
Wash all attachments in soapsuds.
Rinse and wipe clean with a dry cloth.
CAUTION:
Never use a brush, powder
soap,
cleanser, acid, benzine,
gasoline, or thinner. These tend to leave scratches on the
coating.
(4)
To Turn
Off
The Refrigerator
-
If you will not be using
your refrigerator for a day or two, turn the thermostat knob
to “1”.
For
a longer period, set the thermostat knob to
“OFF”
and disconnect power by removing the AC plug from
its’ socket. Also, disconnect the DC power from its’ source.
When not in use the refrigerator should be emptied, cleaned
and dried, and the door left ajar.
Defrosting
-
Set the thermostat dial on
“Off”.
When frost is
melted, wipe the compartment plates with a soft, dry cloth.
The best suggestion is to set the dial to “1
”
before you retire
for the night. The frost will be gone the next morning.
4
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