
V.I.P.™ Freezer
MDF-U73VUltra-Low Temperature 
Temperature
(Ambient temp. 30°C)(Ambient temp. 30°C)
-86
-86˚C-86˚C
Effective capacity
728
728Liter
Patented V
Patented V.I.P.
(Vacuum Insulation Panel)
Extra-large capacity, space saving 
Liter
˚C
/
/
25.7
25.7cu.ft.
cu.ft.
.I.P
.
™
™
MDF-U73V
Ultra-Low Freezer with Improved 
energy consumption
• V.I.P.™ technology maximises storage capacity
• Safe operation with Status Alert continuous 
condition monitoring
• The inner doors are removable for cleaning and 
defrosting
• Enhanced security
• Improved accessibility
• Quiet operation
• Improved energy consumption
• Can hold up to 528 pcs of 2-inch boxes or 336 pcs 
of 3-inch boxes
 

MDF-U73V
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SpecificationsFeatures
EVOLUTIONARY DESIGN
• SANYO V.I.P.™ Evolution Series -86˚C 
ultra-low temperature freezers use 
patented revolutionary vacuum insulation 
cabinet construction that reduces the 
wall thickness from 14cm to 7cm (5.5” 
to 2.7”) and achieves up to 30% more 
storage capacity than a conventionally 
insulated freezer without increasing the 
footprint.
• The newly developed refrigeration 
system and the freezer structure offer a 
quiet experimental environment.
• Achieves 10% higher energy conservation than previous model. (For model 
rated 220V, 50Hz)
• The newly developed back cover 
combined with new aerodynamically 
designed and placed components in the 
refrigeration compartment provide superior air flow, making it possible to drastically reduce the stress on the freezer 
and contributing to excellent durability.
Front
Compressors
Back 
cover
SAFETY
• Alarm lamp and buzzer offer secure 
warning of power failure or abnormal 
temperature increase.
• High and low temperature warning 
provides an audible and visual alarm 
when the temperature deviates more 
than ±5˚C to ±20˚C (adjustable) from the 
set point.
• Alarm ring-back function ensures that 
buzzer will resume operation, should 
alarm conditions continue after it is 
silenced.
• Microprocessor-controlled filter-clog 
check function protects the refrigeration 
circuit.
• The rugged, one-handed outer door latch 
has a hole to allow a padlock to securely 
protect valuable samples.
• Control panel with digital 
display for easy operation.
Model 
Temperature range 
Maximum cooling 
performance 
Exterior dimensions
(W x D x H) 
Interior dimensions
(W x D x H) 
Net weight 
Effective capacity 
Shelves 
Access port
Compressor
Refrigerant 
Alarm
Remote alarm contact
Accessories
*Cooling performance is indicated by the temperature reached at 
the center of the freezer (at ambient temperature of 30°C with no 
load). In order to use the freezer at a stable temperature for a long 
time, it is recommended that the temperature be set to at least 
5°C higher than the indicated lowest temperature. 
In addition, depending on the usage conditions, it may not be 
possible to reach the indicated lowest temperature.
Caution:
Rear
Air
• Two independent and insulated inner 
doors with gaskets prevent cold air leakage.
RELIABILITY
• Status Alert (Condition monitor) 
Monitors ambient and system conditions 
continuously and notifies of any abnormalities before a problem happens.
Performance Data
Pull-down characteristics
40
Central air temp. in cabinet
20
Ambient temp. 30˚C, No-load
0
–20
–40
–60
Temperature (˚C)
–80
–100
02468101214
Time (hour) Time (hour)
Pull-up characteristics during power failure
0 
–10 
–20 
–30 
–40 
–50 
–60 
–70 
–80
Temperature (˚C)
–90
–100
0654378921
SANYO guarantees the product under certain warranty conditions. 
SANYO in no way shall be responsible for any loss of content or 
damage to content.
•Appearance and specifications are subject to change without notice.
ACCESSIBILITY
• A beak style inner 
door latch tightly 
closes the inner door 
against the freezer 
frame. It also helps make opening and 
closing the door smoother.
• The condenser filter is situated at the 
bottom right side of the front panel to 
make filter removal and cleaning easier.
Dimensions [Unit : mm (inch)]
(1.8)
(2.3)
1076 (42.4)
45
1010 (39.8)
870 (34.3)
329
(13.0)
59
33 (1.3) 875 (34.4)
21
(0.8)
5 (0.2)5 (0.2)
1400 (55.1)
2010 (79.1)
450 (17.7) 1560 (61.4)
672.5 (26.5)672.5 (26.5)
795 (31.3)
600 (23.6)
1
(0.04)5(0.2)
(1.1)
11
(0.4)
28
SANYO Electric Co., Ltd., Biomedical Division, Gunma is certified for: 
Quality management system: ISO9001 / Medical devices quality management system: ISO13485 / Environmental management system: ISO14001
Options
105 
(4.1)
Inventory rack 
IR-220U 
IR-224U
1789 (70.4)
1558 (61.3)
SANYO DAQ (data acquisition) System 
MTR-5000/ Ethernet (LAN) Interface MTR-L03 
or RS232C/RS485 Interface MTR-480
MDF-U73V
–50˚C to –86˚C (1˚C increments) 
–86˚C 
(Ambient temp. 30˚C) 
1010 x 875 x 2010mm
(39.8” x 34.4” x 79.1”) 
870 x 600 x 1400mm
(34.2” x 23.6” x 55.1”) 
Approx. 350kg (772 lbs.) 
728 L (25.7 cu.ft.) 
Stainless steel, 3 shelves 
17mm diameter, 3 locations 
(back, bottom left/right corner) 
Hermetic type, Output: 1100 W 
(high stage side), 1100 W (low 
stage side)
HFC 
High/low temperature, Power 
failure, Filter check, Self 
diagnostics, Door check, Part 
replacement nortification
Allowable contact capacity: 
DC 30V, 2A 
1 set of keys, 1 scraper
CO2 backup system operation characteristics
12
Ambient temp. and maintenance 
of –70˚C by injection of LCO
15
10
Time (hour)
0
525201510 30 35
Ambient temperature (˚C)
Circular recorder 
2 (30kg)
MTR-G85
Strip chart recorder
MTR-85H
Recorder mounting 
bracket 
MDF-S3085
(for MTR-85H)
LCO2 backup system
CVK-UB2
LN2 backup system
CVK-UBN2
Distributed by:
SANYO Electric Co., Ltd.
Biomedical Division
http://biomedical.sanyo.com/
©2009 SANYO Printed in Japan 2009.9 MA
SHR148