Vestfrost MK 304 User manual

Ice-lined Refrigerator Model MK 304
+43ºC
+5ºC
+43ºC
+5ºC
GB Instructions for use
FR Consignes d’utilisation
ES Instrucciones para el uso
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CHI 使用说明


General Information
The MK-Model is an ice-lined vaccine
refrigerator. It has one compartment for
vaccine storage (+2 to +8°C) equipped with
baskets.
Power supply
The MK 304 is equipped with a heavy-duty
compressor that can operate at voltages
22% below nominal voltage. See the rating
plate. If voltage variations go beyond
this range, it is recommended to use an
automatic voltage stabilizer.
Technical data
See the rating plate, which is placed at the
rear side of the appliance.
Unpacking and installation
Unpacking
1. Unpack the appliance and check that it
has not been damaged. If you observe any
damage, inform your supervisor.
2. Check the rating for correct voltage and
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3. Open and remove all internal packing
material.
Contents
General information....................................2
Power supply..............................................2
Technical data.............................................2
Unpacking...................................................2
Get to know your refrigerator......................3
Installation ..................................................4
Electrical connection...................................5
Operation and function ...............................6
Cool down of the appliance ........................6
Loading the appliance ................................
Maintenance and cleaning..........................8
Trouble shooting.........................................9
Warranty, Spare parts and service ...........10
Wiring diagram .........................................13
Disposal ...................................................14
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without prior notice.
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Get to know your Refrigerator
Handle
Sealing strip
Vaccine storage
Water ballast box
Compressor compartment
with ventilation grille
Temperature display
Fig. 1
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Location
The appliance must be placed in a well
ventilated room, not in direct sunlight and
away from other heating sources.
When installing the appliance please

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Installation
800 mm
50 mm
100 mm
100 mm
There must be at least 30 mm clearance
between the base of the appliance and the

There must be free access to
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Fig. 2
Fig. 3
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Preparation
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-
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earthed.
Colour code for leads:
Lead of cord Pin of plug
230 V 115 V
Brown White Live
Blue Black Neutral
Green/Yellow Green Earth
Connect the plug to the socket and switch
on the appliance.
- Check, by listening, that the compressor is
running, if it does not run, contact your
supervisor.
Electrical connection
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Operation and function
Electronic thermostat
The appliance has an electronic thermostat
that controls the temperature in the vaccine
compartment. The thermostat is set by the
factory
1. The green lamp is on when the appliance
is connected to the power supply.
2. Thermometer.
Starting procedure
Connect the mains lead to the power

indicate that the appliance is operating. The
electronic thermostat makes a self test, 20
seconds before the compressor starts.
Temperature control
It is recommended to check the inside
temperature with an accurate thermometer
once a day. The inside temperature must
be checked regularly according to WHO’s

Fig. 4
Cool down of the appliance
Before the appliance is loaded with
vaccines the ice-lining in the 4 sides must
be frozen. To ensure that the ice-lining in
the 4 sides is frozen do the following:
1. Place a thermometer in the top basket.
2. Plug in the appliance, and let it run for
24 h.
3. Check the temperature in the top and
bottom basket (must be between +2° and
+8°C).
The temperature in the vaccine
compartment must always be monitored
on the thermometer and be within the
range +2° to +8°C. Due to tolerance of the
thermostat you should always control the
temperature during cool down.
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Fig. 4
Loading the appliance
Loading vaccines
When the temperature in the vaccine
compartment has stabilized, i.e. and the
temperature is between +2° and +8°C and
the compressor stops and starts, vaccines
can be loaded. The vaccines should be
placed and arranged in the baskets, and

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To ensure air-circulation and prevent too
low vaccine temperature, direct contact
to the inside walls must be avoided. The
Vaccine load in the bottom basket shall not
be higher than 250 mm.
Fig. 6
Do not load lower baskets
above this height (250mm)
Fig. 5
Fan
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Daily maintenance:
The temperature in the vaccine
compartment must always be monitored
on the thermometer every day. Please note
that the vaccine in the appliance may not
freeze.
Weekly maintenance:
During normal use, water can accumulate
at the bottom of the appliance; remove with
a cloth or through the drainage hole.
Wipe of water droplets on the inside wall at
the same time.
Under certain ambient conditions, rime can
form on the inside wall. Remove the rime
without using sharp edged tools.
Check if lid gasket is sealing tight to the top
frame when the lid is closed. A tight sealing
lid reduces accumulation of water and for-
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Monthly maintenance:
Clean the grill on the right side of the
refrigerator once each month.
Yearly maintenance:
Electric connections and components are
to be checked and cleaned once a year or
more if necessary.
Maintenance and cleaning
Cleaning
Disconnect the power supply before
cleaning. The best way to clean the
appliance is by using luke warm water with
a small amount of unscented detergent.
Never use cleaning agents that scour. Use
a soft cloth. Rinse with clean water and dry
thoroughly. It is important to prevent water
from running into the control panel.
The sealing strip around the lid must be
cleaned regularly to prevent discolouration
and prolong service life. Use clean water.
After cleaning the sealing strip, check that it
continues to provide a tight seal.
If the appliance is not being used for any
period of time, switch off the appliance,
disconnect the power supply, empty the
appliance, clean the inside, and leave the
lid open to allow air circulation and prevent
smells.
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Trouble shooting
Fault Possible cause Remedy
Compressor is not run-
ning, and the ice packs
are not cold
Be patient, it is most likely that the
compressor will start within a few
minutes.
If this is not the case, check the fol-
lowing:
- Check that power is connected.
- Check the fuse and replace it if
necessary.
- If the above is OK, call technical
supervisor.
Compressor is running,
and the temperature is
too high
The ventilation grille is blocked.
The lid is not closed properly.
The temperature in the room in which
the appliance is installed is too high.
Ensure unhindered air circulation.
Ensure that the lid is closed properly.
Shield the appliance against direct
sun light and ensure more ventilation
to the room.
No temperature is
displayed
The thermometer is broken.
There is not enough light for the solar
sensor.
Change the thermometer.
Turn on the light.
Temperature goes
below +2°C in a spe-

Air circulation is restrickted.
Basket in direct contact with wall.
Check load hight is not above 250mm
(or loadline) in lower baskets.
Move the end basket a little to leave
a gap between the basket and the
wall.
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Product nr.
Warranty, spare parts and service
Warranty disclaimer
Faults and damage caused directly or
indirectly by incorrect operation, misuse,
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installation or mains connection. Fire, ac-
cident, lightening, voltage variation or other
electrical interference, including defective
fuses or faults in mains installations are not
covered by the warranty.
Repairs performed by others than approved
service centres and any other faults and
damage that the manufacturer can sub-
stantiate are caused by reasons other than
manufacturing or material faults are not
covered by the warranty.
Please note that changes to the construc-
tion of the appliance or changes to the
component equipment of the appliance will
invalidate warranty and product liability, and
the appliance cannot be used lawfully. The
approval stated on rating plate will also be
invalidated.
Spare parts
When ordering spare parts, please state
the type, serial and product numbers of
your appliance. This information is given on
the rating plate. The rating plate contains
various technical information, including type
and serial numbers.
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