Sanyo MDF-U500VXC Failure Mode Comparison, Twin Guard Series vs. Conventional Cascade Freezer

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Failure Mode Comparison

Twin Guard Seriesvs. Conventional Cascade Freezer

 

 

Conventional Freezer,

 

Event

Conventional Freezer No Back-Up

with Back-Up System

SANYO Twin Guard Series

 

 

 

 

Fan Failure

Freezer Fails

 

 

High Stage Compressor Failure

Freezer Fails

 

 

Low Stage Compressor Failure

Freezer Fails

Freezer fails, CO2 or LN2 back-up system offers short term protection until contents can be removed and repairs initiated

If one fan fails the second fan automatically maintains energy exchange

No high or low stage used. Two refrig- eration systems, each with a separate compressor, operate independently in overlapping cycles during normal op- eration. If one compressor fails internal temperature is maintained indefinitely at -65°C with backup compressor. Optional LN2 or CO2 back-up system offers additional protection

 

20

 

(°C)

0

Pull-up while a power failure

 

temp.

-20

 

 

 

Chamber

-40

 

 

Single compressor operation

 

 

 

-60

(kept at approx. -65°C)

 

-80

 

Chamber temp. (°C)

40

20

0

-20

-40

-60

-80

Central air temp. in cabinet Ambient temp. 30°C, No-Load

-100

Normal cycle operation (-80°C setting)

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

(hour)

-100

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

(hour)

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

Pull-up characteristics during power failure Pull-down charateristics

Reduced Power Consumption

The SANYO Twin Guard SeriesFreezer can be set for Normal or EcoModeoperation, depending on ambient tem- perature and load. EcoModeis recom- mended for 90-95% of applications. Although both refrigeration systems are completely independent, EcoModeestablishes an overlapping cycle to significantly reduce energy consump- tion while optimizing interior uniformity from top-to-bottom and front-to-back for protection of high value materials.

Power Consumption Benefits

Model Number

MDF-U500VXC

MDF-U700VXC

 

 

 

 

 

Ambient Temperature

15°C

23°C

15°C

23°C

 

 

 

 

 

Normal Savings

-9.7%

-7.8%

-16.7%

-17.5%

 

 

 

 

 

EcoModeSavings

-16.8%

-14.1%

-18.5%

-18.3%

 

 

 

 

 

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Contents 86C Ultra-Low Freezers Twin Guard Series -86ºC Ultra-Low Upright Freezer Selection Twin Guard Series -86 DualCool Refrigeration System Ultra-Critical Installations and Applications OverviewApplication Justification Benefit What It Is What It Does Why It Is Important Sanyo Refrigeration Delivers Uniform TemperatureTwin Guard Series Comparative Energy Performance Twin Guard Series Green FeaturesStatus EcoMode vs. Normal ModeTwin Guard DualCool Refrigeration System Twin Guard DualCool Refrigeration SystemTwin Guard Series vs. Conventional Cascade Freezer Failure Mode ComparisonPower Consumption Benefits Reduced Power ConsumptionIntegrated LCD Control with Graphical Display Control, Alarm and MonitoringTwin Guard Series -86C Ultra-Low Freezers Alarm & Safety Features EventsAudible Product Features Twin Guard Series FeaturesVacuum relief valve is mounted in the left wall Electrical Standards Cabinet ConstructionRoHS Compliance Noise ReductionRack Systems Options & AccessoriesTwin Guard Series Accessories Digital Temperature Recorder optionalRefrigeration System Controls, Alarm, MonitoringDescription Cabinet Design and ConstructionDimensional Drawings Sanyo Connect Service andTechnical SupportUnique Sanyo Services Predelivery and On-Site Services

MDF-U500VXC, MDF-U700VXC specifications

The Sanyo MDF-U700VXC and MDF-U500VXC models are compact and efficient commercial freezers designed for laboratory and medical applications. These products are lauded for their reliability, precision temperature control, and user-friendly features. Both units cater to institutions that require secure and consistent storage for temperature-sensitive items.

One of the standout features of the Sanyo MDF-U700VXC and MDF-U500VXC is their advanced cooling technology. They utilize a hybrid refrigeration system that combines both natural refrigerants and cutting-edge compressor technology. This not only ensures a stable cooling environment but also minimizes environmental impact by using eco-friendly refrigerants. The temperature range for both models typically spans from -20°C to -30°C, making them ideal for preserving biological samples, pharmaceuticals, and other sensitive materials.

Another prominent characteristic is the temperature accuracy and uniformity. Both units are equipped with sophisticated microprocessor-controlled temperature management systems that maintain precise temperature levels. Additionally, integrated alarms and monitoring systems provide alerts in case of temperature fluctuations, ensuring that the stored contents remain undisturbed and protected. This feature is crucial in laboratory environments where product integrity is paramount.

The MDF-U700VXC has a larger capacity compared to the MDF-U500VXC, appealing to users who need to store a significant number of samples or larger items. However, both models are designed with space efficiency in mind, featuring adjustable shelving and a well-organized interior that allows easy access to stored materials. The exterior is crafted for durability, with a robust construction that can withstand the rigors of daily use in busy environments.

Energy efficiency is another key consideration in both models. They are designed to minimize power consumption while maintaining optimal performance, which is a critical factor in reducing operational costs for laboratories and medical facilities.

Both Sanyo models feature user-friendly interfaces, making setup and operation straightforward for staff members. Optional accessories such as external temperature recorders can further enhance usability and compliance with safety regulations.

To summarize, the Sanyo MDF-U700VXC and MDF-U500VXC represent cutting-edge solutions for temperature-sensitive storage. Their advanced cooling technologies, precise temperature control, user-friendly design, and energy efficiency make them essential assets for any laboratory or medical facility striving for excellence in sample preservation.