The Ideal –152˚C, –86˚C Freezing Environment
in Capacities from 86 L to 701 L
Ideal for long term preservation of biologicals, blood components and various
cell line, SANYO preservation systems employ microprocessor control to
maintain a high-precision temperature environment. They are not affected by
ambient temperature, minimizing uneven temperature distribution within the
chamber, and a temperature rise during door opening.
–152˚C Ultra-Low Temperature Chest Freezer
For stable long-term storage
MDF-1156/1156ATN
TEMPERATURE EFFECTIVE CAPACITY
–152˚C 128 L
Dimensions Unit: mm (inch)
1400 (55.1)
500 (19.7)
572 (22.5)
667 (26.3)
Performance Data
Pull-down characteristics
under no-load condition
60
40
20
–20
–40
–60
–80
Temp. (˚C)
–100
–120
–140
–160
Central air temp. in cabinet
Ambient temp. 30˚C, no load
0
0252015105
Time (hr.)
53
(2.1)
945 (37.2)
905 (35.6)
800 (31.5)
450 (17.7)
(4.5cu.ft.)
52
(2.0)
105
(4.1)
MDF-1156
Pull-up characteristics
during power failure
0
–20
–40
–60
–80
–100
Temp. (˚C)
–120
–140
–160
Central air temp. in cabinet
Ambient temp. 30˚C, no load
0 567394281
Time (hr.)
Effect of ambient temp.
on holding time of liquefied gas
25
LN2 injection at –135˚C
20
Time (hr.)
15
SV of backup system –135˚C
LN
2 50L
0
04010 3020
Ambient temp. (˚C)
For MDF-1156/1156ATN
Why Freeze to –152˚C?
Recrystallization Mechanism (Artist’s Concept)
–80˚C
Recrystallization point
–130˚C
–152˚C
World’s lowest –152˚C freezer
ensures stable cell and tissue
preservation
An important factor to consider when
preserving cells or tissue at ultra-low
temperatures is to prevent amorphous ice
crystals from recrystallizing within and
outside the cells. Samples that are
maintained in an ultra-low temperature
freezer at –152˚C which is far lower than the
recrystallization point (–130˚C for pure water)
can be preserved semi-permanently.
Preservation at ultra-low temperatures
maintains vitrification without crystallization
occurring inside and outside cells.
In contrast to conventional liquid nitrogen
preservation containers, freezer preservation
has numerous advantages: no sample
contamination, no sudden liquid eruptions,
as well as low operational costs.
SANYO’s MDF-1156 and 1156ATN make
long-term storage below the recrystallization
point easier and more stable than ever
before.
Hexagonal crystal
Cubic crystal
Amorphous
ice crystal
Advanced Features
Specially designed compressor and
cascade refrigeration system
Specially designed
for rugged ultra-low
temperature
applications in a
laboratory
environment (HFC
refrigerants only).
Micro-processor Temperature
Control with LED Digital Display
Extremely accurate, easy-to-read display.
The temperature inside the freezer can be
set and monitored easily by means of a
microprocessor temperature control with an
LED digital display. The thermostat
incorporates a platinum resistor (Pt. 100Ω),
precision and durability.
Integrated Cabinet Design
High-performance refrigeration system with
foamed-in-place cabinet insulation
maximizes interior temperature uniformity
and protects against fluctuating ambient
temperatures.
Hot line for secure sealing
Moisture condensation at the top edges of
the cabinet due to differences in temperature inside and out causes frost and icing
problems that may reduce heat insulation
efficiency and obstruct door movements.
These problems are prevented by the “hot
line” by means of which hot gas from the
higher temperature circuit is circulated
through the problem areas.
Hot line
Self-diagnostic function
The temperature sensor, filter sensor and
cascade sensor monitor operation conditions
continuously. Should abnormality be picked
up, an error code and the current temperature will be displayed in turn.
Ring back function
The alarm buzzer can be silenced by pressing the BUZZER key on the control panel.
(The remote alarm signal is not cancelled.)
Should the alarm condition continue after a
certain suspension, the alarm buzzer sound
will resume.
Easy Maintenance (MDF-193/193AT have
no filters)
Filter check lamp notifys
the user of a clogged
condenser filter.The
condenser filter is situated at the front panel to
make filter removing
and cleaning easier.
Note: The position of the filter check lamp is shown
on the control panel (see photo shown at the
bottom of this page).
Standard casters and levelling feet
Standard-equipped heavy duty casters make
it easy to move a freezer when necessary.
The levelling feet keep a freezer level and
firm on the floor.
Safety Device
Built-In Temperature & Power
Failure Alarms (Lamp/Buzzer)
In case of power failure or an irregular rise in
temperature, a rechargeable battery-operated indicator lamp and alarm will be activated. A compact recording unit which automatically records the inside temperature,
and a backup system with liquefied CO2 or
N2 which is selfactivated when a power outage occurs are also available separately. This
equipment helps insure that the contents
will be protected in the event of any power
failure or mechanical trouble.
Control panel
12
1
2
3 4 5
8
9
10
6 7
11
MDF-394AT
1
Alarm lamp and buzzer
2
Filter check lamp
3
Buzzer key
4
Alarm test key
5
Mode setting key
6
Digit shift key
7
Numerical value shift key
8
Power switch
9
2 back-up test swich (AT type only)
CO
10
2 back-up swich (AT type only)
CO
11
Battery switch
12
Temperature recorder
–86˚C Ultra-Low Temperature Chest Freezers
Ideal for large-capacity preservation
MDF-794/794AT
TEMPERATURE EFFECTIVE CAPACITY
–86˚C 701 L
Dimensions
795 (31.3)
Performance Data
Pull-down characteristics
under no-load condition
30
20
10
0
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
012345678910
Unit: mm (inch)
2570 (101.2)
2110 (83.1)
762 (30)
1840 (72.4)
Central air temp. in cabinet
Ambient temp. 30˚C, no load
Time (hr.)
(24.8cu.ft.)
861 (33.9)
770 (30.3)
53
(2.1)
500 (19.7)
1070 (42.1)
Pull-up characteristics
during power failure
30
20
10
0
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
012345678910
38
(1.5)
105 (4.1)
Central air temp. in cabinet
Ambient temp. 30˚C, no load
Time (hr.)
MDF-794AT
Effect of ambient temp.
on holding time of liquefied gas
20
15
Time (hr.)
10
5
SV of backup system –70˚C
LCO
2 30kg
53515 2510 3020
Ambient temp. (˚C)
Ideal for middle-sized installation space
MDF-594/594AT
TEMPERATURE EFFECTIVE CAPACITY
–86˚C 487 L
Dimensions Unit: mm (inch)
795 (31.3)
Performance Data
Pull-down characteristics
under no-load condition
30
20
10
0
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
012345678910
2010 (79.1)
1550 (61.0)
762 (30)
1280 (50.4)
Central air temp. in cabinet
Ambient temp. 30˚C, no load
Time (hr.)
(17.1cu.ft.)
861 (33.9)
770 (30.3)
53
(2.1)
500 (19.7)
1070 (42.1)
30
20
10
0
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
38 (1.5)
MDF-594AT
105 (4.1)
Pull-up characteristics
during power failure
Central air temp. in cabinet
Ambient temp. 30˚C, no load
012345678910
Time (hr.)
Effect of ambient temp.
on holding time of liquefied gas
20
15
Time (hr.)
10
5
SV of backup system –70˚C
LCO
2 30kg
53515 2510 3020
Ambient temp. (˚C)
Low-profile design for easy access to stored materials
MDF-394
TEMPERATURE EFFECTIVE CAPACITY
–86˚C 309 L
Dimensions Unit: mm (inch)
1860 (73.2)
1400 (55.1)
1120 (44.1)
530 (20.9)
660 (26.0)
Performance Data
Pull-down characteristics
under no-load condition
30
20
10
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
Central air temp. in cabinet
Ambient temp. 30˚C, no load
0
Time (hr.)
53
(2.1)
945 (37.2)
(10.9cu.ft.)
891 (35.1)
800 (31.5)
520 (20.5)
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
38 (1.5)
MDF-394
105 (4.1)
Pull-up characteristics
during power failure
30
20
10
0
Central air temp. in cabinet
Ambient temp. 30˚C, no load
012345678910
Time (hr.)
Effect of ambient temp.
on holding time of liquefied gas
20
15
Time (hr.)
10
5
SV of backup system –70˚C
LCO
2 30kg
53515 2510 3020012345678910
Ambient temp. (˚C)
Compact, space-saving unit optimized for private use
MDF-193/193AT
TEMPERATURE EFFECTIVE CAPACITY
–86˚C 86 L
Dimensions Unit: mm (inch)
750 (29.5)
658 (25.9)
480 (18.9)
Performance Data
Pull-down characteristics
under no-load condition
30
20
10
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
Central air temp. in cabinet
Ambient temp. 30˚C, no load
0
012345678910
Time (hr.)
53
(2.1)
420 (16.5)
945 (37.2)
791 (31.1)
700 (27.6)
430 (16.9)
(3.0cu.ft.)
38 (1.5)
Pull-up characteristics
during power failure
30
20
10
–10
–20
–30
–40
–50
Temp. (˚C)
–60
–70
–80
–90
012345678910
Central air temp. in cabinet
Ambient temp. 30˚C, no load
Time (hr.)
MDF-193
Effect of ambient temp.
on holding time of liquefied gas
20
15
10
Time (hr.)
5
5 101520253035
SV of backup system –70˚C
LCO
2 30kg
Ambient temp. (˚C)
Specifications
Model No.
Temperature Range
Exterior Dimensions
[W x D x H] mm (inch)
Interior Dimensions
[W x D x H] mm (inch)
Effective Capacity
Exterior Cabinet
Interior Cabinet
Inner Lid
Insulation
Compressor
Evaporator
Condenser
High stage side
Low stage side
High stage side
Low stage side
High stage side
Low stage side
Temperature Control
Temperature Display
Sensor
Safety
Alarm system
Net Weight (Approx.)
ATN : LN2 backup system, temperature recorder
2 backup system, temperature recorder
AT: LCO
*MDF-394 for 110 to115V and 220V/60Hz is unavailable.
MDF-1156/1156ATN
–125˚C to –152˚C
1,400 x 800 x 945
(55.1 x 31.5 x 37.2)
500 x 450 x 572
(19.7 x 17.7 x 22.5)
128 liters (4.5 cu.ft.)
Aluminum plate
1
Fin and tube type
Cascade condenser
Microprocessor
control system,
Non-volatile memory
Selectable high temp. alarm (+10˚C & +15˚C from set point)
265kg (584 lbs.) —1156
272kg (600 lbs.) —1156ATN
MDF-794/794AT
MDF-594/594AT
MDF-394*
MDF-193/193AT
–50˚C to –86˚C
2,570 x 770 x 1,070
(101.2 x 30.3 x 42.1)
1,840 x 500 x 762
(72.4 x 19.7 x 30.0)
701 liters (24.8 cu.ft.)
2,010 x 770 x 1,070
(79.1 x 30.3 x 42.1)
1,280 x 500 x 762
(50.4 x 19.7 x 30.0)
487 liters (17.1 cu.ft.)
1,860 x 800 x 945
(73.2 x 31.5 x 37.2)
1,120 x 520 x 530
(44.1 x 20.5 x 20.9)
309 liters (10.9 cu.ft.)
750 x 700 x 945
(29.5 x 27.6 x 37.2)
480 x 430 x 420
(18.9 x 16.9 x 16.5)
86 liters (3.0 cu.ft.)
Galvanised steel with baked on finish
Stainless steel
4
3
Foamed-in-place rigid polyurethane
Hermetic type, 1,100 W
Hermetic type, 1,100 W
Cascade condenser
Tube on sheet (shared with interior)
Shell and tube type
Fin and tube type
Cascade condenser
Hermetic type, 450 W
Hermetic type, 750 W
Hermetic reciprocated type,
Tube-on-sheet type
Finless tube type
Microprocessor: Keypad input
Temp. input range: –20˚C to –95˚C (1˚C increment)
Set value memory: non-volatile memory
Digital display
Platinum resistance (Pt. 1000 Ω)
Platinum resistance (Pt. 100 Ω)
Cylinder key on the lid handle and Mouse proof cover on the back side
Adjustable high and low temp. alarm
(±5˚C to ±20˚C from set point)
Power failure alarm, Filter check lamp (Except MDF-193/193AT which have no filters), Remote alarm contact
335kg (739 lbs.) —794
345kg (761 lbs.) —794AT
291kg (642 lbs.) —594
301kg (664 lbs.) —594AT
219kg (483 lbs.)
103kg (227 lbs.) —193
109kg (240 lbs.) —193AT
1
450 W
Optional Accessories
Storage Racks (Aluminium) Temperature Recorder
Model No.
Case Dimensions
(W x D x H)
Number of Drawers
Applicable Model
(Rack capacity)
MDF-19SC
207 x 144 x 413mm
8.1” x 5.7” x 16.3”
3
MDF-193/193AT (6)
MDF-39SC
155 x 155 x 515mm
6.1” x 6.1” x 20.3”
4
MDF-394 (20)
MDF-49SC
207 x 144 x 539mm
8.1” x 5.7” x 21.2”
4
MDF-1156/1156ATN (6)
MDF-59SC
207 x 144 x 665mm
8.1” x 5.7” x 26.2”
5
MDF-594/594AT (18)
MDF-794/794AT (24)
Inventory Racks (Stainless steel)
Model No.
Box Type
(Capacity)
IR-207C
IR-209C
IR-213C
IR-305C
IR-306C
IR-309C
*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:
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.
External Dimensions (mm)
Width
2” (7)
2” (9)
2” (13)
3” (5)
3” (6)
3” (9)
144
144
144
144
144
144
Depth
142
142
142
142
142
142
Freezer Model (Rack capacity)
Height
405
MDF-193 (6)
518
MDF-394 (21), 1156 (9)
592
MDF-594 (24), 794 (36)
405
MDF-193 (6)
518
MDF-394 (21), 1156 (9)
747
MDF-594 (24), 794 (36)
IR-306CIR-209C
MDF-39SC
MDF-59SC
Model No.
Recording
Range
Freezer
Model
MTR-85H
–100 to +50˚C
MDF-193
MDF-394
MDF-594
MDF-794
ULT-Freezer Backup Kits
CVK-UB2/UB2(I):
2 Backup Kit for MDF-794/594/394
LCO
CVK-UBN2/UBN2(I):
2 Backup Kit for MDF-794/594/394
LN
CVK-A: Built-in LCO
for MDF-794/594/394/193
CVK-AT2: LCO
CVK-ATN2: LN
(I) version for North America only
2 Backup Kit
2 Backup Kit for MDF-1156
2 Backup Kit for MDF-1156
MTR-155H
–170 to +30˚C
MDF-1156
SANYO Electric Co., Ltd., Biomedical Division, Gunma is certified for:
Quality management system: ISO9001 / Medical devices quality management system: ISO13485 / Environmental management system: ISO14001
RoHS (European Restriction of Hazardous Substances directives) compliant
Distributed by:
SANYO Electric Co., Ltd.
Biomedical Division
http://www.sanyo.co.jp/cmg/biomedical
©2008 SANYO Printed in Japan 2008.12 MA
SHR141
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