Dulas VC225ILR User Manual
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3.
Your Dulas Mains Powered Refrigerator.
Congratulations on choosing the Dulas VC225ILR vaccine refrigerator. With over 30 years of
engineering experience in the production of vaccine refrigerators, Dulas is considered one of the
market leaders in this field.
The VC225ILR is Dulas’ latest innovation in vaccine refrigeration. Using technology adapted from
our ground breaking Solar Direct Drive refrigerators we have created a mains powered refrigerator
that is ideally designed for intermittent electricity supplies. With advanced insulation and a robust
phase change lining, our ILR delivers an exceptionally long holdover while also providing 100%
freeze free protection for your vaccines. This new technology offers the same renowned Dulas
quality and reliability that have always kept your vaccines safe, but in a simpler and more efficient
package.
How does the Dulas ILR work?
When mains power is available the refrigerator runs, cooling the vaccine compartment and its
contents. In many situations electricity is intermittent, causing problems for traditional mains
powered refrigerators. To maintain the temperature when the power is off the Dulas ILR has a
phase change lining. Thi
s lining acts as a “cold store” and stores energy that keeps the
temperature inside the refrigerator stable when electricity is not available. The temperature of the
cold store in the Dulas ILR is naturally between +4 to +5°C which is the perfect temperature
required for safe vaccine storage and means that the product is 100% Freeze Free.
In order to store sufficient energy to deliver the specified holdovers, the refrigerator must
be allowed time to charge its cold store. Refer to the table below to see how long it will take
for the Dulas ILR to be ready to store vaccines:
Total No. of hours the power is
off each day
Running time required before full
holdover is achieved (at +43
°
C
ambient)
Continuous operation
possible once cool down has
been achieved
0
2 days
Y
12
4.5 days
Y
16
7 days
Y
20
14 days
Y
This table applies to a new refrigerator or whenever the internal temperature has gone above +8
°
C
Recommended power supply
The Dulas ILR must be connected to the supplied Dulas AC power supply (PS-ILR-001). This
power supply delivers the DC electricity required by the refrigerator. Connect the PS-ILR-001
power supply to an AC input of:
Nominal 230V 50Hz single phase supply rated to at least 5A. (110V and or 60Hz models
available)
Voltage range: 160
– 300V; Frequency range: 45 – 65 Hz
