Sanyo MDF-U53VC

RoHS
This product does not contain any hazardous substances prohibited by the RoHS Directive.
(You will find ‘RSF’ mark near the rating plate on the RoHS compliant product.)
WARNING
* You are requested to use RoHS compliant parts for maintenance or repair.
* You are requested to use lead-free solder.
SM9910073
SANYO Electric Co., Ltd.
Biomedical Business Unit
Service Manual
Ultra-Low Temperature Freezer
MDF-U53V
MDF-U53VC
FILE No.

Sanyo MDF-U53VC Specifications

General

Brand	Sanyo
Model	MDF-U53VC
Category	Freezer
Power Supply	220 V, 50 Hz
Refrigerant	HFC
Alarm System	Yes
Defrost System	Manual
Energy Star Rated	No
Capacity (cu. ft.)	5.3
Temperature Range (°C)	-30°C to -20°C
Weight (lbs)	66
Door Type	Single
Shelves	4
Weight (Approx.)	130 kg

Summary

Effective Models

Specifications

Structural Specifications

Details the physical and material characteristics of the freezer unit.

Control Specifications

Outlines the operational parameters and system controls of the freezer.

Performance Specifications

Describes the cooling capabilities, power consumption, and operating limits.

Dimensions

Refrigeration Circuit

Cooling Unit Parts

Components on PCB

Electrical Parts

Specifications of Sensor

Connections on PCB

Wiring Diagram

Circuit Diagram

Control System Operations

Key and Switch Operations

Explains the function of the buzzer key and operational states.

Temperature Control and Alarms

Details how to set and adjust temperature and alarm thresholds.

Function Modes and Diagnostics

Lists and describes various function modes (F00-F32) for the controller.

Sensor Failure Diagnostics

Details error codes and procedures for sensor disconnection or short circuits.

Remote Alarm Terminal

Describes the remote alarm output contacts and conditions.

Control Panel Overview

Key Button Functions

Explains the function of each button on the control panel.

Indicator Lamps

Describes the meaning of each indicator lamp on the control panel.

Installation and Setup

Installation Site Selection

Guidelines for selecting an appropriate location for installing the freezer.

Installation Procedures

Step-by-step instructions for setting up and grounding the freezer.

Unit Start-Up and Operation

Unit Start-Up Procedures

Procedures for initial power-on and basic operational checks of the freezer.

Chamber Temperature Setting

Explains how to set the desired temperature inside the freezer chamber.

Alarm Management

Alarm Temperature Setting

Instructions for configuring high and low temperature alarm thresholds.

Alarm Resume Time Setting

Sets the duration for which the buzzer is silenced during an alarm.

Status Monitoring and Safety Functions

Monitor Freezer Status

Explains how to monitor the freezer's running status and identify potential issues.

Alarms & Safety Functions

Lists all alarms, safety functions, and self-diagnostic features of the unit.

Routine Maintenance

Cleaning Procedures

Instructions for cleaning the cabinet and condenser filter.

Defrosting of Inside Wall

Procedure for removing frost buildup from the freezer's interior.

Troubleshooting and Repair

Troubleshooting Guide

Common malfunctions and their corresponding checks and remedies.

Battery Replacement

Step-by-step guide for replacing the internal backup battery.

Unit Disposal

Optional Accessories

Temperature Recorder Installation

Instructions for installing the optional temperature recorder.

Back-up System Operation

Details on the optional backup system and its controls.