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Freezer
MDF-DU502VH
Service manual
Panasonic MDF-DU502VH Service Manual
Ultra-low temperature freezer
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Table Of Contents
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Contents
Table of Contents
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Table of Contents
Table of Contents
Features
Structural Specifications
D I M E N S I O N S
Control Specifications
Performance Specifications
Dimension
Mdf-Du502Vh
Mdf-Du702Vh
Cooling Unit Parts
Refrigeration Circuit
Binary Refrigerating Cuircuit
C O M P O N E N T S O N P C
Connections on PCB
C O N N E C T I O N S O N P C
Electric Parts
Specifications of Sensor
Wiring Diagram
W I R I N G D I a G R a
Circuit Diagram
Main
C I R C U I T D I a G R a
Power
Usb
Operation
O P E R a T I O
Runtime,Version up
Temperature Calibration Procedure
Operation System Configuration
Operation Setup Data
Temperature Control
Restrict of Compressor Starting
Condition and Priority of Comp. Operation Mode
Control Specification
Compressor Normal Mode
Speed Control
Constant Speed Operation
H Side Start Condition （AND)
Error Handling
Fan Control
Table AUTO Mode
Capi. Heater Control
AIP Heater Control
Buzzer Control
Alarm Type
Alarm Function
Alarm Delay
Alarm Buzzer Output and Erase
Ring Back
Model
Inverter Signal
Parts Layout
Front/Control Panel
Left Side
Opposite Side of Control Panel
Lower Right Side/Electric Box
Lower Front/Condenser
Rear Bottom/Cooling UNIT
Repairing Unit / Gas Charge
Preparations
Low Side Only
R E P a I R I N G U N I T / G a S C H a R G
Caution
Common Work for High Temperature Side and Low Temperature Side
Release Gas
Securing Work Space
Tool Connection
Refrigerant Release
Vacuum Evacuation of Cooling Circuits
Vacuum Evacuation before Nitrogen Blowing
Nitrogen Charge before Nitrogen Blowdown
Nitrogen Blow
Repair
Replacement Parts
Preparation for Gas Welding
Piping Connection by Gas Welding
Refrigeration Circuit Leak Check
Evacuation
Leak Check of Connection Point
Complete Evacuation
Gas Charge
Completion of Evacuation
Preparation for Charge
Preparation: Leak Check Spray
Starting Gas Charge
Stop Gas Charge
Gas Leak Check
Cooling Circuit
Enclosed in Pentane
Pentane Collection
Charge Pentane to Refrigeration Circuit
Confirm Operation as Final Confirmation
Test Data
AT30C Pull-Down & Pull-Up Temperture
AT35C Pull-Down Pressure
AT35C Pull-Down Temperture
AT35C Pull-Down Current-Input
Temperature Uniformity - 17Points Measuring
Internal Temperature Uniformity (Reference Data)
Distribution Data
Running Cycle
Backup Cooling Kit Installation and Setting Procedure
Confirmation of Packing Items
Precautions
Before Installation
At Installation
After Installation
Installation
Injection Test
Setting
Mdf-Du500Vx
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Mdf-Du502Vh
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Mdf-Du702Vh
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Service Manual
Ultra-Low Temperature Freezer
Mdf-Du502Vh
Mdf-Du702Vh
Panasonic Healthcare Co., Ltd.
Biomedical Div.
SM0000002-03
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