Sanyo MDF-U500VXC User Manual

Twin Guard Series™ -86°C Ultra-Low
Freezer Featuring -86 Dual°Cool

™

Independent Refrigeration Systems

MDF-U500VXC

The Industry’s Safest
Ultra-Low Storage Solution
for High Value Biologicals

The 18.3 cu.ft. V.I.P. PLUS™ insulated MDF-U500VXC
holds up to 352 two-inch boxes. Includes integrated
LCD performance monitor and digital controller
for comprehensive system management, data
logging, remote communications, alarms, predictive
performance and validation. Maintenance free,
filterless design.

GREEN

product

For interactive product demo visit: www.twinguardseries.com

2

3

General Features & Benefits

ICD Digital

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

Insulation Panel

VIP

Battery

SAVE

VIP Plus Vacuum

Insulation Panel

VIP+

Filterless

Design

VIP Vacuum

Insulation Panel

VIP

VIP Plus Vacuum

Insulation Panel

VIP+

CPU and

Touch Pad

VIP Vacuum

Insulation Panel

VIP

Rechargeable

Battery

VIP Plus Vacuum

Insulation Panel

VIP+

Filterless

Design

Insulated

Inner Doors

ICD Digital

Display

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

Insulation Panel

VIP

Service

Automatic

Alarm System

Automatic

Alarm System

Rechargeable

Battery

Rechargeable

Battery

Energy

SAVE

VIP Plus Vacuum

Insulation Panel

VIP+

Filterless

Design

VIP

VIP+

VIP Vacuum

VIP

CPU and

Touch Pad

VIP Vacuum

VIP

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

VIP

VIP Vacuum

Insulation Panel

VIP

VIP+

Insulated

Inner Doors

ICD Digital

Display

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

Insulation Panel

VIP

Service

Battery

Energy

SAVE

VIP Plus Vacuum

Insulation Panel

VIP+

Filterless

Design

ICD Digital

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

Insulation Panel

VIP

SAVE

VIP Plus Vacuum

Insulation Panel

VIP+

Filterless

Design

Insulated

Inner Doors

ICD Digital

Display

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

VIP

ICD Digital

Display

Remote Alarm

CPU and

Touch Pad

VIP Vacuum

VIP

What It Is What It Does Why It Is Important

-86 DualºCool Refrigeration Technology Two independent refrigeration systems operate
together or individually, depending on demand
and performance environment.

™

EcoMode

Environmentally Friendly Refrigerants Eliminates potential for ozone depletion while

Filterless Condenser Design Transfers energy from the refrigeration system

Patented V.I.P. PLUS
Composite Insulation

Integrated Graphical LCD Control Center Combines all control, alarm, monitoring and

Structural Enhancement Integrates inventory management, access

Compliant to International Standards Assures quality standards, safety and

Performance Two independent refrigeration systems running

in overlapping cycles,

maintaining cooling capacity.

with minimal heat output.

™

Vacuum Panel

Combines high-efficiency vacuum-panels with
conventional polyurethane structural foam and
barrier film into a high-tech wall assembly.

data management functions into a single
door-mounted system controller.

and site installation.

performance criteria are met or exceeded.

One refrigeration system is always available
to back-up the other in the event of a component
failure.

EcoMode™ optimizes run time, minimizes energy
costs and maximizes interior temperature
uniformity.

Complies with the Montreal Protocol and IEC
for safety and efficiency.

Eliminates the need for an air filter; optimizes
heat exchange and minimizes compressor heat
built-up over time.

Increases interior volume within conventional
dimensions offering more storage capacity per
sq.ft. of occupied floor space.

High visibility LCD display provides a convenient
user interface to setpoints, current and previous
temperature status, alarm parameters, internal
diagnostics, communications and security.

Cabinet design attributes include high-strength,
lockable door latches and doors, latchable inner
doors, adjustable shelves, vacuum release ports,
locking casters and seismic restraints to simplify
operation, installation and to satisfy local codes.

Essential for compliance with LEEDs, RoHS,
UL and other third-party standards and
recommended practices.

Product Features

Service

Rechargeable Battery CPU and Touch Pad CFC Free

Automatic Alarm System Remote Alarm Energy Savings

Power Failure Alarm LCD Digital Display Quiet, Reliable Compressors

V.I.P. PLUS
Vacuum Insulation Panel

Insulated Inner Doors

™

Filterless Design

The SANYO Twin Guard Series™ Ultra-Low Freezer
for Ultra-Critical Installations and Applications

Application Sensitivity Benefit

Stem Cells, Cord Blood, T-Cells, Engineered
Tissue, Organ/Tissue, Vaccines, Bone Marrow,
Hybridomas, Lymphocytes, Cancer Cells,
Clinical Specimens, Fibroblasts, Ova, Sperm

BSL4 or Highly Secured Labs Restricted access to the contained laboratory

The SANYO MDF-500VXC Twin Guard Series™ ultra-low freezer is designed for -86°C storage of high-value biologicals. Ideal for critical material

storage in repositories, highly secure BSL4 labs, hospitals, clinics and medical research facilities. The Twin Guard Series™ introduces the

concept of dual, independent, auto cascade refrigeration systems contained within a single cabinet.

The innovative design utilizing two independent systems •
allows the unit to continue to run continuously at -65°C
in the unlikely event of one compressor failure.

The combination of additional refrigeration intelligently •
managed by intuitive microprocessor controls and
integrated into SANYO’s patented V.I.P. PLUS™ vacuum
panel cabinet make the most efficient use of available
floor space.

Twin Guard Series•
low protection while minimizing energy costs through
a unique EcoMode

™

freezers significantly increase ultra-

™

function. EcoMode™ optimizes
power consumption by orchestrating run times for each
refrigeration system in response to cooling demands.

The Safest Ultra-Low Freezer for Long-Term
Storage of Ultra-Critical Biologicals

The SANYO Twin Guard Series™ satisfies the industry demand
for safe, long-term storage for the most high-valued materials.
Two, independent refrigeration systems, combined with
optional liquid nitrogen or liquid CO

2

back-up systems, offer a
circle of protection unmatched in the marketplace. Developed
for use with conventional inventory racks and boxes, the Twin
Guard Series

™

is ideal for storage of sensitive stem cells,

embryos, cell lines, and other rare specimens.

Twin Guard Series™ -86 Dual°Cool™
Refrigeration System

The Twin Guard Series™ Ultra-Low Freezer avoids conventional
cascade refrigeration technology by using two completely
independent one-compressor, autocascade cooling systems,

Highly sensitive to temperature fluctuations
or uneven storage temperatures at different
positions within the interior chamber.

limits serviceability.

Either circuit will maintain -65°C. In the unlikely event of a •
compressor failure in one system , the remaining system
will automatically maintain a minimum of -65°C for an
indefinite period.

In the event of a facility power failure with optional CO•

2

or LN

backup system installed, the freezer will maintain

-65°C storage temperature for up to 8 hours (CO
system) and -65°C storage temperature for up to 15 hours
(LN

2

backup system)

A unique EcoMode•
cycles to maintain -86°C and to reduce energy consumption
by as much as 15%.

Evaporator coils embedded in the patented, high-tech, •
SANYO V.I.P. PLUS
are strategically oriented to deliver the best temperature
uniformity at all shelf levels, top-to-bottom and front-to-back.

New SANYO designed Cool Safe•
feature innovative refrigerant feedback processes to reduce
compressor temperature, thereby extending compressor life
and minimizing heat output.

Enhanced temperature uniformity, top-to­bottom, front-to-back, assures stability at all
inventory locations.

™

Twin Guard Series
necessary to react in the event of mechanical
failure.

™

deploys both systems in overlapping

™

vacuum-insulated thin-wall cabinet

extends critical time

2

2

backup

™

refrigeration compressors

each capable of maintaining ultra-low temperatures.

2 3

Patented SANYO refrigerants are non-ozone depleting, non-flammable and
environmentally safe in compliance with the Montreal Protocol.

Each refrigeration circuit includes a closed-loop cold-wall •
evaporator configured in parallel to the other.

Independent evaporators and cooling fans assure back-•
up status at all times, eliminating system failure due to
sub-component failure in conventional cascade systems
configured of mutually dependent high- and low-stage
systems.

Independent Systems
Efficient ultra-low cooling
is achieved through two
independent evaporator
circuits surrounding the
interior chamber.

B

A

Chamber temp. (°C)

Pull-up while a power failure

Single compressor operation
(kept at approx. -65°C)

Normal cycle operation (-80°C setting)

20

0

-20

-40

-60

-80

-100
0 1 2 3 4 5 6 7 8 9 10 11 12

(hour)

Twin Guard Series™ DualºCool Refrigeration System

B

-86˚C

A

B

-86˚C

A

B

-86˚C

A

B

-86˚C

A

B

-86˚C

A

2 compressors are turned ON/OFF at same time

2 compressors and fan motor for each are independently controlled by SV and read AT.

Chamber

Comp A
Comp B

temp

T12 on T12 off

Normal

Normal

Chamber

Comp A
Comp B

temp

T12 on

T12 off

T2 on

T2 off

Chamber

Comp A
Comp B

temp

T on T1 off T12 on T2 offT1 2 on

ECO mode

ECO mode

ECO mode operation image

Pull down

Temp.

Comp A
Comp B

Stable temperature

NORMAL mode operation image

Pull down

Temp.

Comp A
Comp B

Stable temperature

Dual, independent refrigeration systems operate in Normal or energy-saving EcoMode™ which is selected by the user and engaged through the

LCD controller. Normal Mode is used for the strictest of GMP applications. EcoMode™ is applicable to 90-95% of applications.

Status Function Performance

System A and B ON Maximum Pull-Down and

Recovery Capacity

System A and B ON,
Cycling On/Off

System A and B ON,
Cycling On/Off

System A ON Back-Up for System B Maintains minimum -65°C reserve temperature

EcoMode

Normal Mode Maintains excellent top-to-bottom uniformity.

™

Establishes highly uniform -86°C storage temperature;
maximizes recovery following door openings and heat load
additions

Maintains better energy management at high or low
ambient temperatures as well as excellent top-to-bottom
uniformity.

Maintains most repeatable, cycling wave form for
the strictest of GMP applications.

Failure Mode Comparison:
Twin Guard Series™ vs. Conventional Cascade Freezer

Event

Fan Failure

High Stage
Compressor Failure

Low Stage
Compressor Failure

Conventional Freezer,
No Back-Up

Freezer fails.

Conventional Freezer,
With Back-Up System

Freezer fails,
back-up system offers
short term protection until
contents can be removed
and repairs initiated.

CO

2

or LN2

SANYO
Twin Guard Series

If one fan fails, the second fan automatically maintains
energy exchange.

No high or low stage used. Two refrigeration systems,
each with a single compressor, operate independently
in overlapping cycles during normal operation. If one
compressor fails internal temperature is maintained
indefinitely at -65°C. Optional LN
offers additional protection.

™

2

or CO2 back-up system

System B ON Back-Up for System A Maintains minimum -65°C reserve temperature

EcoMode™ vs.
Normal Mode

This chart shows the repeatable cycling wave form of normal mode vs. eco mode.
Normal mode is for strict GMP applications.

The SANYO Twin Guard Series™ Freezer can be set for Normal or
EcoMode™ operation. EcoMode™ establishes an overlapping cycle to
significantly reduce energy consumption.

SANYO Twin Guard Series™
Energy Savings vs. Conventional Freezers

Reduced Power Consumption

The SANYO Twin Guard Series™ Freezer can be set for
Normal or EcoMode
temperature and load. EcoMode
90-95% of applications. Although both refrigeration
systems are completely independent, EcoMode
establishes an overlapping cycle to significantly reduce
energy consumption while optimizing interior uniformity
from top-to-bottom and front-to-back for protection
of high value materials.

™

operation, depending on ambient

™

is recommended for

™

Performance Chart, power-failure
situation Normal operation and
Twin Guard Steries™ backup.

Power Consumption Benefits

Conventional

Cascade System

Ambient
Temperature

15°C – – – -9.7%

23°C – – – -7.8%

Twin Guard Series

Normal
Savings

SANYO

EcoMode™

™

Savings

-16.8%

-14.1%

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