42
Should there be any malfunctions in the system, please attempt to answer the
following questions before notifying maintenance or calling a Haier Equipment &
Instrument Service Center. Please do not dismantle the freezer yourself.
Fault
Troubleshooting
Freezer does
not start up
Is the power supply normal? Has the main protector been turned on yet?
Is the voltage supply too low?
Is there any voltage input from the outside?
Poor
refrigeration
eff ect
Is the ambient temperature too high?
Are the inner doors and outer doors closed properly? (Has any ice or frost
damaged the seals between the door and the frame?)
Is the condenser fi lter clogged?
Is the temperature setting correct?
Is the freezer being kept away from direct exposure to sunlight?
Is the freezer near any heat source?
Is the porthole plug installed in the porthole with proper insulation materials?
Has the freezer been loaded with too many non-frozen samples within the
last few hours?
The unit is
noisy
Is the unit set on a fi rm and level fl oor?
Is the exterior of the unit touching any objects?
Is the freezer unit leveled with the leveling legs?
FAQ
7
Product Feature
This product is suitable for the ultra low temperature storage of products in applications such as
clinical, pharmaceutical,scientifi c research, and epidemic institutions. It also can be used in blood
stations, hospitals,centers for disease prevention and control, science and research institutions,
electronic and chemical laboratories, biomedical engineering institutions, and open sea fi shery
companies to store red blood cells, viruses, germs, skin, bones, bacteria, sperm, biological products,
electronic components, and low temperature testing samples of special products, etc.
1.Temperature control
Temperature is controlled by computer and numerically displayed, and regulated in units of
1
℃
(LCD:0.1
℃
); temperature range: -40
℃
to -86
℃
.
2.Security system
•Various malfunction alarms (high/low temperature alarm, power failure alarm, probe failure
alarm,hot condenser alarm, high ambient temperature alarm, door ajar alarm, low battery alarm).
•Two types of alarms (buzzer sounding alarm, fl ashing light alarm).
•Multiple levels of protection are standard including passcode and time-delayed start.
•All components are electrically grounded.
3.Refrigeration system
•Optimized multiple refrigeration technology with top brand frequency compressors off ering better
refrigeration capability.
•Excellent temperature preservation layer providing optimal temperature preservation eff ect.
•Exclusive sealing structure of multiple doors and hot tubing for condensation prevention can
reduce the frost eff ectively.
•Specially designed low temperature computer control, to prevent the normal redundant systems
from being erroneously controlled by the low temperature compressor.
4.User-friendly Design
•Display to indicate freezer temperature, ambient temperature and input voltage. Control panel to
set the high/low temperature alarm and inner temperature. All malfunction alarms are also shown
on the display.
•Designed with adjustable shelves, suitable for product storage.
•Safe lock design prevents accidental opening of doors.
•Installation in broad range of ambient temperature range of 10
℃
to 32
℃
environment.
•Unique all-in-one latch design and compact caster features allow ease of operation and
maneuvering.
•Condensing fan motors are automatically controlled to turn on and off for energy saving.
•Network and remote alarm contacts are available as well for convenient connection and
communication.
Due to our continuous improvement, Haier ULT freezers may appear to be diff erent over time.
User manuals are subject to change without notice.
Summary of Contents for DW-86L579BP
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