Nova Kool, refrigerators, freezers, Marine, RV, Truck

Nova Kool, refrigerators, freezers, Marine, RV, Truck
Nova Kool, refrigerators, freezers, Marine, RV, Truck
http://www.novakool.com/support/nov98-june05-produ...
Fridge/Freezer Installation and Repair
Operation
Ventilation
Electrical Hook Up
Trouble-Shooting Guide
Introduction
Nova Kool's refrigeration systems are designed
to run efficiently from AC Shore Power, Battery
Power, or Solar Electric Power.
The refrigerator door is shipped right hinged.
This can easily be changed by removing the
door pins and latch pin and re-installing them
on the opposite hinge bracket. The decorative
panel can be easily changed to match the
interior of the boat.
The unit is charged with a CFC free R134A. This
refrigerant is a Zero Ozone Depleter.
Our unit features a reciprocating compressor
which is very efficient; while running it uses
less than 60 watt hrs. / hr.
All our refrigerators and freezers have built in battery protection. This feature is
designed to help protect the battery from damage due to accidental Deep discharge.
Operation
Our units are easy to operate. We use one thermostat,
whether you have a single door or two-door model.
This thermostat is a full range thermostat that will
maintain your unit at the temperature you desire. Turning
the control all the way to the right (clockwise) will give you
the coldest position, and turning to the left will give you a
warmer temperature in the fridge. The control is also an
on/off switch when you turn it to the "O" position (hard
left).
A good setting to start with is #2.
Defrosting
The frequency of defrost depends on the usage, (door openings) and ambient
(outside) temperatures. It is time to defrost when the refrigerator builds up 1/4 inch
of ice on each side of the cold plates.
The best way to defrost the refrigerator is to remove all the food, and place a towel
inside the fridge, on the bottom of the cabinet(s). Turn the thermostat to the "O"
position.
1 of 5
1/16/2013 5:57 PM
Nova Kool, refrigerators, freezers, Marine, RV, Truck
http://www.novakool.com/support/nov98-june05-produ...
Never use a knife to scrape ice from the cold plate. This will rupture the cold plate
and let the refrigerant escape.
Cleaning
The best time to clean the fridge is after a defrost. Wipe the inside
clean using a non abrasive cleaner(watered down) for the hard to
clean stains. We recommend baking soda as the first choice for a
cleaner.
If you notice your refrigerator running longer than
normal, clean the condenser (usually required every few
years).
The condenser is located behind the refrigerator and can
be cleaned by using a bottle brush and brushing
vertically from top to bottom on the face of the
condenser. An alternative method is to vacuum the
condenser.
Condenser at back
of fridge
Back to top
Ventilation
All refrigerators, regardless of the make,
are heat-transfer machines. They transfer
the heat from the inside of the fridge to
the outside of the fridge. If adequate
ventilation is provided, the compressor will
operate more efficiently, and use less
power.
The minimum total area required for
ventilation openings depends on the size
of the fridge. All single door Nova Kools
require 60 square inches of total
ventilation area. It is recommended that
the vents are located at the bottom (30
square inches) and the top of the fridge
(30 square inches); this supports the
natural convection of heat from cold
(bottom) to warm (top).
On our double door models, 120 square inches is required (60 at the top and 60 at
the bottom). The cold air intake at the bottom of the fridge can be from the left or the
right side, and if possible should be at a level below the fridge.
The warm air opening at the top of the refrigerator should be above the fridge if
possible. All openings can be of any configuration (long and narrow , square or round)
as long as the 60 or 120 square inches is cut out.
If you are using grills, take into account the restriction they will give, and adjust the
opening accordingly.
Back to top
Electrical Hook Up
To determine the size of the wire to be used, measure the maximum length of wire to
connect one of the leads from the electronic unit (on the back of the refrigerator) to
the battery. Using the chart below, size your wire accordingly. The table is based on a
3% voltage drop.
wire size
AWG
14
12
10
8
max. lead length in feet**
12VDC units
24VDC units
8
16
12
25
25
50
40
80
** Length is the distance between the electronic unit and the battery
The circuit breaker must be a 20 amp capacity on the DC side and a 5 amp capacity
on the (optional) AC side. Failure to size the wire or breaker correctly (too small) may
cause a premature shut down of the refrigerator by the Battery Protection Device.
Dual Voltage Electrical Hook up
2 of 5
1/16/2013 5:57 PM
Nova Kool, refrigerators, freezers, Marine, RV, Truck
http://www.novakool.com/support/nov98-june05-produ...
15 Amp Fuse must be Field Wired for 12 volt.
7.5 Amp Fuse must be Field Wired for 24 volt
DC Only Electrical Hook up
15 Amp Fuse must be Field Wired for 12 volt.
7.5 Amp Fuse must be Field Wired for 24 volt
Fuses
We recommend that the refrigerator have its own circuit,
without any other appliances connected to the same wires.
Using the Common Buss for the refrigerator wiring can
sometimes cause radio frequency noise and interference.
Nova Kool recommends the use of a 15
Amp Fuse (12 VAC) and a 7.5 Amp Fuse
(24 VDC) as near as possible to the DC
Source.
On the optional AC power supply a 4 amp (110 volt) or a 2 amp
(220 volt) glass fuse, can be found under the black fuse holder cap
on the power supply.
Back to top
Power Supply for AC/DC Refrigerators
Wiring Diagram for DC Only
Refrigerators
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Electronic Unit
Battery
Main switch (optional)
Fan (optional)
Thermostat
Resistor for pre-setting
compressor speed (opion)
Resistor for pre-setting low
voltage cut out (opional)
Fuse (Field Installed)
Terminal block
Light (optional)
Door switch (opional)
Standard battery protection settings
12 V
cut-out
V
10.4
12 V
cut-in
V
11.7
24 V
cut-out
V
22.8
24 V
cut-in
V
24.2
Trouble-Shooting Guide
Yes
3 of 5
No
1
Turn power on and turn thermostat to "7" position
Go to #2
2
Is the compressor running? (put your hand on top to feel
slight vibration to be sure).
Go to
#14
3
DC Breaker is in the "on" position & optional fuse is good? Go to #5
Go to #4
4
Replace fuse or turn breaker "on". Does fuse or breaker
blow?
Go to #5
Go to #6
Go to #3
1/16/2013 5:57 PM
Nova Kool, refrigerators, freezers, Marine, RV, Truck
http://www.novakool.com/support/nov98-june05-produ...
5
Check voltage at the refrigerator "+" & "-" terminals on
the black module. Is it over 12 VDC?
Go to #7
Go to #6
- (Go to
17 on
AC/DC
models)
6
Check batteries, wiring and connections to the
refrigerator for fault, corrosion, proper wire sizing and
correct the problem.
Go to #1
7
Put a jumper wire between terminals "C" & "T". Is the
compressor running now?
Go to
#11
Go to #8
8
Disconnect power. Remove electronic module (philips
screw beside terminal designation label will require
removal). Disconnect the plug. Measure resistance
(ohms) between each of the three compressor terminal
pins. Is the measured resistance APPROXIMATELY the
same?
Go to #9
Go to
#10
9
Replace Electronic Module.
Go to #1
10 Have compressor replaced by qualified appliance
technician who has the ability to evacuate and recharge
the system. This is seldom necessary so please be sure
and if possible contact Nova Kool for further instruction
beforehand.
11 Check wiring to thermostat with ohm meter to ensure
there is continuity. (No broken or damaged wires or
connectors). Is the wiring okay?
Go to
#13
Go to
#12
12 Disconnect power. Repair or replace wiring as necessary
Go to #1
13 Replace thermostat.
Go to #1
14 Have refrigerator in a well ventilated area (ie. on cabin
floor). After an hour is it refrigerating?
Go to
#15
Go to
#16
Go to
#18
Go to
#19
15 Check that adequate ventilation has been provided. 60
sq. in. for single door models and 120 sq. in. for 2-door
models. See ventilation suggestion on Page 3 of this
manual. Add ventilation as required.
16 Have a qualified appliance technician determine if there is
a refrigerant leak or a compressor with a mechanical
problem.
FROM 17-24 APPLIES TO AC/DC MODELS ONLY
17 Switch DC breaker off and AC breaker on. Does the
refrigerator run?
18 Turn DC breaker on and check DC voltage on Terminal
Go to
Block located on side of grey AC power supply. Is it above #24
12 VDC (or 24VDC)?
Go to #6
19 Check fuse on grey AC power supply (4 amp 110V and 2
amp 220V). Is the fuse good?
Go to
#22
Go to
#20
20 Remove power supply and determine if there are any
indications of a short circuit. If no, replace fuse. Does
fuse blow again?
Go to
#24
Go to
#21
21 Check DC voltage output of power supply at black module Go to
terminals "+" & "-". Is it above 12 VDC (or 24 VDC)?
#18
Go to
#24
22 Is 110V (or 220V) available at the AC plug?
Go to
#21
Go to
#23
23 Check plug, wiring, breaker, shore power or genset for
damage or fault. Repair or replace as required.
Go to
#17
24 Replace grey AC power supply.
Back to top
Typical AC/DC Refrigerator
1.
2.
3.
4.
5.
6.
7.
4 of 5
Electronic Unit
Battery
Main switch (optional)
Power Supply (optional)
Fan (optional)
Thermostat
Resistor for pre-setting
1/16/2013 5:57 PM
Nova Kool, refrigerators, freezers, Marine, RV, Truck
http://www.novakool.com/support/nov98-june05-produ...
speed
8. Resistor for pre-setting
battery protection voltage
(optional)
9. Fuse
10. Terminal Block
11. Light (optional)
12. Door Switch (optional)
Refrigerant Charge & Sealed System
Your Nova Kool is charged with R134a. This is a environmentally safe refrigerant with
a "O" Ozone Depletion Potential.
It is used by most of the domestic refrigeration and appliance repair companies and
manufacturers.
If you need to repair the closed sealed system, use a qualified appliance refrigeration
person. This is seldom necessary so be sure first, and before any arrangement is
made contact Nova Kool.
Operational Sequence
When the thermostat is turned on (you should hear a click) the compressor should try
to start. It is not uncommon to hear a small squeak when it tries to start. If it does
not start on the first attempt it will continue to try every 40 seconds. If, for some
reason, the compressor becomes overloaded it will go through this cycle and the fan
will continue to run during the 40 seconds.
When the thermostat is satisfied, the compressor and fan (optional) shut down.
Before doing warranty work contact your dealer or Nova Kool at (604) 523-6515.
Back to top
Website design in Vancouver by Graphically Speaking
5 of 5
1/16/2013 5:57 PM
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising