Sanyo MDF-137 Manuale utente

SM9910202

SANYO Electric Co., Ltd.

Biomedical Business Division

Service Manual

Biomedical Freezer

MDF-137

FILE No.

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.

Effective models

This service manual is effective following models.

Model name Product code Voltage and Frequency

MDF-137 823 016 54 220-240V 50Hz

Contents

㪧㪸㪾㪼㩷

Features --------------------------------------------------- 1

Specifications --------------------------------------------------- 2

- Structural specifications

- Performance specifications

- Control specifications

Dimensions --------------------------------------------------- 4

Cooling unit parts ---------------------------------------------- 5

Refrigeration circuit -------------------------------------- 6

Components on PCB -------------------------------------- 7

Connections on PCB -------------------------------------- 8

Electric parts ---------------------------------------------- 9

Specifications of sensor -------------------------------------- 10

Wiring diagram ---------------------------------------------- 11

Circuit diagram ---------------------------------------------- 12

Control specifications -------------------------------------- 13

Installation of compressor terminal cover ---------------------- 21

Parts layout --------------------------------------------------- 24

Test data --------------------------------------------------- 27

- Pull-down & Pull-up temperature

- Pull-down pressure

- Pull-down power consumption

- Temperature uniformity data (15points measured)

Amount of power consumption when driving at cycle

Instruction manual ---------------------------------------------------- 33

Features

䂓㩷 Cooling performance

- New compressor realizes chamber temperature can maintain -30㷄at least when

ambient temperature is 35㷄.

䂓㩷 Environment conscious

- HFC refrigerant, R-134a is adopted.

- CP urethane foaming is adopted for frame insulation.

䂓㩷 Better reliability for storage

- Various function modes are added by flash memory.

- Battery age is informed by counting battery accumulation time.

- Delay time for temperature alarm is changeable.

- New door lock mechanism

Specifications

䂓Structural specifications

Item Specifications

Name Biomedical Freezer

Model MDF-137

External dimensions W640 x D687 x H881 mm

Internal dimensions W525 x D440 x H715 mm

Effective capacity 138 L

Exterior Painted steel

Interior Colored aluminum plate

Insulation Rigid polyurethane foamed-in place

Door Painted steel

Lock 1 pc, cylinder type

Compressor Hermetic type, Output: 150W

Evaporator Aluminum tube on sheet type

Condenser Wire and tube type

Refrigerant R-134a

Battery For power failure alarm, Nickel-metal-hydride battery, DC6V, 1100mAh

Automatic charge

Accessories 1 set of key, 1 scraper, 2 baskets

Caster 4 pcs

Leveling foot 2 pcs at front

Access port 㱢17mm at right side and bottom left

Weight 52 Kg

Optional components

Automatic temperature recorder: MTR-4015LH, MTR-G85

Mounting kit for automatic temperature recorder:

MDF-S3040 (for MTR-4015LH)

MDF-S740䋨for MTR-G85䋩

2 baskets: MDF-13B2

MTR-480C

MTR-L03

MTR-5000

䂓Performance specifications

Item Specifications

Cooling performance -30㷄䋨AT:35㷄, no load䋩

Temperature control range -20䌾-30㷄

Rated voltage AC220V AC230V AC240V

Rated frequency 50Hz 50Hz 50Hz

Rated power consumption 95W100W 100W

Noise level 35 dB <A> (background noise; 20dB)

Maximum pressure 1.64 MPa

䂓Control specifications

Item Specifications

Temp. controller

Microcomputer input by keypad

Setting range:㩷-18㷄䌾-35㷄䋨1㷄increment䋩

Non-volatile memory

Temp. sensor Thermistor sensor

Temp. display LED digital display (1㷄increment)

Display range:㩷-50㷄䌾50㷄

High temp.

Set temperature䋫5䌾+15㷄, changeable䋨Default: +10㷄䋩

ALARM lamp blinks and buzzer sounds intermittently

with 15 min. of delay

Remote alarm contact activates and joins with buzzer

Low temp.

Set temperature-5䌾-15㷄, changeable䋨Default: -10㷄䋩

ALARM lamp blinks and buzzer sounds intermittently

with 15 min. of delay

Remote alarm contact activates and joins with buzzer

Remote

alarm

Remote alarm terminal 3P: Contact capacity DC30V, 2A (Max)

NC-COM䇮NO-COM

Activates during high/low temp. alarm, power failure alarm and Alarm

test performed, joins with buzzer

Alarms

Power fail. ALARM lamp blinks, buzzer sounds intermittently and remote alarm

contact activates.

Control panel

ALARM: Alarm lamp

BUZZER: Alarm buzzer stop key

ALARM TEST: Alarm test key

SET: Set key

䋾: Digit shift key

㺢: Numerical value shift key

DEF: Defrost key

Key Lock

Press 䋾key for 5 seconds.

L0: Unlocked

L1: Locked

Self diagnosis

* When temp. sensor is failed;

- Error code䋨E01/E02䋩and chamber temp. are displayed alternately.

- Remote alarm contact activates with buzzer sounds.

* When battery switch OFF check is failed in Alarm Test;

-㩷Error code䋨E09䋩and chamber temp. are displayed alternately.

Power switch Breaker switch on left back side

Power source Local voltage

Dimensions

Cooling unit parts

㩷㩷㩷

MDF-137

Parts name Specifications

Type FL1568-SP

Compressor cord 7FB-2-M101-010-03

Rated power supply Single phase, 220~240V, 50Hz

Oil Charged q㵭ty: 310±10ml

Cooling method Natural air circulation

PTC PGR0SAT

Overload relay 2.0C36C3

Starting capacitor 60µF-300VAC

Compressor

Running capacitor -----

Evaporator Type Direct cooling tube on sheet type

Type 4A-XH-9Dryer

Charged q㵭ty 10g

Resistance 0.725 MPaG

Length䋨L䋩3600 mm

Outer diameter䋨OD䋩㱢1.8 mm

Capillary tube

Inner diameter䋨ID䋩(㱢0.65 mm)

Type Natural convection

Condenser Wire and tube type

24 lines × P40mm × W440 mm

Pre-condenser Wire and tube type

4 lines × P40mm × W440 mm

Condenser

Frame pipe 㱢4.76䇮C1220T

Refrigerant Type R-134a㩷Charged q㵭ty: 160±5g

㩷Refrigeration circuits 㩷

㩷

Condenser

Dryer

Capillary tube

Compressor

Header

Evaporator

Pre condenser

Frame pipe

䊶䊶䊶 Point to evacuate

Components on PCB

CN8

To Battery

Battery Switch

CN1

To Switching

Power supply

CN2

To MTR-480

(Option)

CN4

#1-#2

To Temp. control relay

CN3

To Remote alarm terminal

CN5

#1-#6 To Display PCB(CN51)

#7-#8 To Buzzer

CN7

#9-#10

To Temp.sensor

CN6

To Display PCB (CN52)

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