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Panasonic MDF-794 User Manual

Panasonic MDF-794
35 pages
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Please read these instructions carefully before using this product, and save this operating instructions
for future use.
See page 32 for all Model Numbers.
MDF-594
MDF-794
Series
MDF-594
MDF-594AT
MDF-794
MDF-794AT
Ultra-Low Temperature Freezer
Operatin
g
Instructions
MDF-594AT

Questions and Answers:

Panasonic MDF-794 Specifications

General IconGeneral
BrandPanasonic
ModelMDF-794
CategoryFreezer
LanguageEnglish

Summary

Introduction to the Ultra-Low Temperature Freezer

Precautions for Safe Operation

Environmental Conditions for Operation

Freezer Components Overview

External Components

Key external parts like door, casters, and leveling feet.

Internal Features

Inner lid and access port for internal access and cable routing.

Control and Display Panel

Area for monitoring temperature, alarms, and operating controls.

System Connections and Ventilation

Joints for backup cooling and air intake/exhaust vents.

Control Panel Functions

Power & Backup Controls

Switches for power, CO2 backup, and battery functions.

Temperature Setting Controls

Keys for mode, digit, value adjustment, and confirmation.

Alarm & Indicator Functions

Keys and lamps for alarms, buzzer, and filter status.

Installation Site Requirements

Installation Procedures

Remove Packaging and Clean

Steps for unpacking and cleaning the unit.

Adjusting Leveling Foot

How to adjust feet to ensure the unit is level.

Fixing the Unit

Securing the unit to the wall using fixtures.

Ground (Earth) Connection

Importance and method of grounding for electrical safety.

Start-Up of Unit

Pre-Operation Checks and Setup

Initial switch checks, CO2 cylinder setup, and power connection.

Unit Operation and Temperature Setting

Turning on power, setting temperature, and configuring backup cooling.

Final Start-up Procedures

Testing alarms, CO2 backup, and loading contents.

Post-Power Failure Operation

How the unit resumes operation after a power failure.

Chamber Temperature Setting

Setting Chamber Temperature

Step-by-step guide to setting the desired chamber temperature.

Alarm Temperature Setting

High Temperature Alarm Setting

Procedure to set the high temperature alarm threshold.

Setting of Alarm Resume Time

Adjusting Alarm Resume Time

Setting the time before the alarm buzzer reactivates after silencing.

Remote Alarm Terminal

Remote Alarm Terminal Description

Explains the terminal's location, signal type, and contact capacity.

Alarms and Safety Functions

Alarm and Safety Function Overview

Details high temp, power failure, filter check, and auto-return alarms.

Sensor and Condenser Abnormality Alarms

Explains errors for thermal, cascade, filter, and ambient sensors.

Fan Motor and Battery Life Alarms

Indicates alarms for fan motor replacement and battery life.

Error Code Explanations

Lists error codes for sensor issues and their meanings.

Temperature Recorder (AT type)

Chart Feeding Procedure

Steps for loading and setting the recording chart.

Replacement of Dry Cell

Instructions for replacing the battery in the temperature recorder.

Setting of Backup Temperature

Adjusting the backup temperature setting for the recorder.

Penholder Installation

How to install or replace the recording pen.

Backup Cooling Kit (AT type)

Setting of Liquid CO2 Cylinder

Connecting the CO2 cylinder to the backup cooling kit.

Operating and Testing Backup Kit

Procedures for operating, setting warning indicators, and testing the kit.

Routine Maintenance

Cleaning of Cabinet

How to clean the exterior and interior of the freezer.

Cleaning of Condenser Filter

Procedure for cleaning the clogged condenser filter.

Defrosting of Inside Wall

Steps for normal and thorough defrosting of the freezer compartment.

Troubleshooting Common Issues

Chamber Not Cooling or Poor Cooling

Checks and remedies for cooling issues like power, load, and ventilation.

Alarm Test Key Issues

Troubleshooting when the alarm test key does not function correctly.

Noise Issues

Reasons for noise during operation, including load and leveling.

Backup Test Switch Issues

Troubleshooting for the backup cooling kit test switch.

Disposal of Unit

Recycle of Battery

Information on recycling the unit's rechargeable battery.

Decontamination of Unit

Procedure for decontaminating the freezer before disposal.

Disposal of Battery

Location of Nickel-Metal-Hydride Battery

Identifies the battery's location in the control box.

Disposal of Nickel-Metal-Hydride Battery

Steps for safely removing and disposing of the battery.

Specifications

Performance Data

Safety Check Sheet for Servicing

Freezer Contents and Risk Assessment

Checks for infection, toxicity, and radioactive sources in contents.

Unit Contamination Check

Assessing the interior for contamination and decontamination status.

Instructions for Safe Repair

Guidelines for ensuring safety during repair and maintenance activities.

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