Sanyo MDF-U333 Manuel utilisateur

Service

Manual Biomedical freezer

SANYO Electric Biomedical Co., Ltd.

MDF-U333

MDF-U537

MDF-U537D

ＳＭ７２１０１３９

MDF-U537

Effective models

This service manual is effective following models.

Model name Model code

MDF-U537 823 168 51 115V 60Hz

823 168 52 220V 50Hz

823 168 53 220V 60Hz

823 168 54 230V 50Hz

823 168 55 240V 50Hz

823 168 56 115V 60Hz

823 168 57 110V 60Hz

824 168 58 230V 50Hz

824 168 59 220V 50Hz

824 168 60 240V 50Hz

825 168 61

825 168 62

MDF-U537D 823 169 51 115V 60Hz

823 169 52 220V 50Hz

823 169 53 220V 60Hz

823 169 54 230V 50Hz

827 169 55 240V 50Hz

823 169 56 240V 50Hz

823 169 57 230V 50Hz

823 169 58 115V 60Hz

823 169 59 110V 60Hz

823 169 60 220V 50Hz

823 169 61

823 169 62

MDF-U333 823 170 51 115V 60Hz

823 170 52 220V 50Hz

823 170 53 220V 60Hz

823 170 54 230V 50Hz

823 170 55 240V 50Hz

823 170 56 110V 60Hz

823 170 57 230V 50Hz

823 170 58 240V 50Hz

823 170 59 220V 50Hz

823 170 60

823 170 61

823 170 62

Voltage and Frequency

Contents

･Feature 1

･Specification MDF-Ｕ333 3

MDF-Ｕ537 5

MDF-Ｕ537D 7

･Dimensions MDF-Ｕ333 9

MDF-Ｕ537 10

MDF-Ｕ537D 11

･Refrigeration circuit 12

Refrigeration circuit principle diagram MDF-Ｕ333 15

Refrigeration circuit welding points MDF-Ｕ333 16

Refrigeration circuit principle diagram MDF-Ｕ537 17

Refrigeration circuit welding points MDF-Ｕ537 18

Refrigeration circuit principle diagram MDF-Ｕ537D 19

Refrigeration circuit welding points MDF-Ｕ537D 20

･Electrical Parts 21

･Specification of sensor 24

･Control specification 25

･Wiring diagram 34

･Circuit diagram 37

･Components on P.C.B. 38

･Test data 39

･Parts loyout 49

･User’smanual 50

− 1− 

Features

＜ＭＤＦ－Ｕ３３３＞

＜ＭＤＦ－Ｕ３３３＞＜ＭＤＦ－Ｕ３３３＞

＜ＭＤＦ－Ｕ３３３＞

■HFC refrigerant

Refrigerant circuit contains HFC refrigerant that effect to environment little.

Latest cooling system reduces negative factor to global environment. With ambient

temperature at 35℃, while temperature of inside chamber maintains -30℃.

■PCM structure

PCM structure reduces amount of organic solvent.

■Temperature control function

Unified temperature control range for same categories realized to set -20℃, which

is suitable for reagent preservation.

■Specification unified

Unified specification for same categories, which also realized to unify performance for

high/low temperature alarm (SV is changeable in the range ±5～±15℃), power failure

alarm, remote alarm terminal, setting memorization by non-volatile memory.

Adopt new microprocessor system for display panel and keypad makes operation easily.

■Self diagnosis function

Abnormal condition for temperature sensor is indicated by self-diagnosis system.

■Validation

Control panel enables zero “0” adjust for validation.

■New door latch mechanism

New door latch is adopted in order to close door surely for reagents.

It is also available to use individual lock mechanism.

■Insulation wall thickness

Unit has necessary insulation performance for each temperature range.

Combination of PCM and frame form makes 610mm for frame size commonly.

■Option

Internal temperature observation system is option.

Unit has communication function corresponding to it.

−2−

Features

＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞

＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞

＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞

■HFC refrigerant

Refrigerant circuit contains HFC refrigerant that effect to environment little.

Latest cooling system reduces negative factor to global environment. With ambient

temperature at 35℃, while temperature of inside chamber maintains -30℃.

■PCM structure

PCM structure reduces amount of organic solvent.

■Temperature control function

New cooling system realizes to set -20℃, which is suitable for reagent preservation.

■Specification unified

Unified specification for same categories, which also realized to unify performance for

high/low temperature alarm (SV is changeable in the range ±5～±15℃), power failure

alarm, remote alarm terminal, setting memorization by non-volatile memory.

Adopt new microprocessor system for display panel and keypad makes operation easily.

■Self diagnosis function

Abnormal condition for temperature sensor is indicated by self-diagnosis system.

■Validation

Control panel enables zero “0” adjust for validation.

■New door latch mechanism

New door latch is adopted in order to close door surely for reagents.

It is also available to use individual lock mechanism.

■Draw box for reagent preservation

100mm for depth of box makes things easily to arrange and take in & out.

(Adopted in bottom chamber of MDF-U537/U537D)

■Compressor protection function

Sensor detects compressor’s warming up to control unit running.

−3−

Specification

MDF-U333

Items Specification

Model description Biomedical freezer

Model Number MDF-U333

Outer dimension (Max) W 614 ×D 733 ×H 1620 mm

Inner dimension W 490 ×D 485 ×H 1290 mm

Effective chamber capacity 274 lit.

Exterior Zinc galvanized steel w/powder polyester coating (PCM)

Interior Polystyrene resin

Insulation Rigid polyurethane foam

Outer door 1 pc, Zinc galvanized steel w/powder polyester coating (PCM)

Latch 1 pc

Door lock 1 pc

(L) 4 pcs Inner dimension: W446×D369×H220 mm

Basket (S) 1 pc (for bottom column) Inner dimension: W487×D221×H155mm

Accessories

Others Defrosting spatula 1 pc, key 1 set, 4 card holders

Caster 4 pcs

Leveling legs 2 pcs (with caster)

Access hole φ30mm. 1 place in left side.

Weights 81 Kg

Evaporator Tube on sheet type (function both evaporator and shelf)

Condenser Wire and tube type

Compressor Hermetic type 225W

HFC refrigerant

Refrigerant R-134a

Cooling performance -30℃(internal 1/2h air temperature, AT：35℃, no load)

-20℃~-30℃

Internal temperature control

range (AT：5℃~35℃、no load)

Power supply Local voltage

−4−

MDF-U333

Items Specification

Temperature controller Microprocessor controlled system with non-volatilized memory.

Temp. set range : -18℃～-40℃

Temperature sensor Thermistor

Temperature display LED digital display (green colored) by 1℃.

Range : -50℃～50℃

High/Low

Temperature

Changeable SV±5℃～15℃. (Initial SV±10℃)

ALARM lamp brinks and buzzer sounds intermittently

(about 15 min. delay)

Remote alarm contact: turns ON during power failure alarm.

Power failure ALARM lamp brinks, buzzer sounds intermittently, remote alarm

contact turns ON during power failure alarm.

Alarm

Remote alarm

contact

Remote alarm terminal 3P: contact capacity DC30v, Max2A, N.O.

–COM. (During power failure, temperature alarm: ON)

Control panel

ALARM lamp

BUZZER: Buzzer key

ALARM TEST: Alarm test key

SET: To switch the SV and PV

＞: To shift the set digit

∧: To change the SV

DEF: Defrost key

Operation

panel

Rear Power switch (Breaker switch)

Battery switch: Power failure alarm switch

Key lock function Press ＞key for five seconds

L0: Unlock L1: Lock

Self diagnosis function

When each sensor is in fault,

Error code and internal temperature are displayed alternately.

Remote alarm contact turns ON with buzzer sounds.

Power switch Breaker switch

Compressor protection Overload relay

Option

Chart recorder: MTR-G85

Mounting kit: MPR-S7(for bottom mounting)

: MDF-S740T(for top mounting)

−5−

Specification

MDF-U537

Items Specification

Model description Biomedical freezer

Model Number MDF-U537

Outer dimension (Max) W 804 ×D 772 ×H 1802 mm

Inner dimension W 658 ×D 607 ×H 1272 mm

Effective chamber capacity 482 lit.

Exterior Zinc galvanized steel w/powder polyester coating (PCM)

Interior Polystyrene resin

Insulation Rigid polyurethane foam

Outer door Zinc galvanized steel w/powder polyester coating (PCM)

2 pcs (upper and lower compartment)

Latch 2 pcs

Door lock 1 pc

(M) 6 pcs (upper compartment)

Inner dimension: W290×D536×H136 mm

Basket (S) 8 pcs (lower compartment)

Inner dimension: W290×D536×H100mm

Accessories

Others Defrosting spatula 1 pc, key 1 set, 14 card holders

Caster 4 pcs

Leveling legs 2 pcs (with caster)

Access hole φ30mm. 1 place on rear.

Weights 131 Kg

Evaporator Tube on sheet type (function both evaporator and shelf)

Condenser Wire and tube type

Compressor Hermetic type 350W

HFC refrigerant

Refrigerant R-407D

Cooling performance -30℃(internal 1/2h air temperature, AT：35℃, no load)

-20℃~-30℃

Internal temperature control

range (AT：5℃~35℃、no load)

Power supply Local voltage

−6−

MDF-U537

Items Specification

Temperature controller Microprocessor controlled system with non-volatilized memory.

Temp. set range : -18℃～-40℃

Temperature sensor Thermistor 2P

Temperature display LED digital display (green colored) by 1℃.

Range : -50℃～50℃

High/Low

Temperature

Changeable SV±5℃～15℃. (Initial SV±10℃)

ALARM lamp brinks and buzzer sounds intermittently

(about 15 min. delay)

Remote alarm contact: turns ON during power failure alarm.

Power failure ALARM lamp brinks, buzzer sounds intermittently, remote alarm

contact turns ON during power failure alarm.

Alarm

Remote alarm

contact

Remote alarm terminal 3P: contact capacity DC30v, 2A, N.O. –COM.

(During power failure, temperature alarm: ON)

Control panel

ALARM lamp

BUZZER: Buzzer key

ALARM TEST: Alarm test key

SET: To switch the SV and PV

＞: To shift the set digit

∧: To change the SV

DEF: Defrost key

Operation

panel

Rear Power switch (Breaker switch)

Battery switch: Power failure alarm switch

Key lock function Press ＞key for five seconds

L0: Unlock L1: Lock

Self diagnosis function

When each sensor is in fault,

Error code and internal temperature are displayed alternately.

Remote alarm contact turns ON with buzzer sounds.

Power switch Breaker switch

Compressor protection

Overload relay

Detect temperature near compressor by thermistor sensor to control

compressor during overload.

Alarm: Error code and internal temperature are displayed alternately.

Remote alarm contact turns on with buzzer sounds.

Option

Chart recorder: MTR-G85

Mounting kit: MPR-S7(for bottom mounting)

: MDF-S740T(for top mounting)

−7−

Specification

MDF-U537D

Items Specification

Model description Biomedical freezer

Model Number MDF-U537D

Outer dimension (Max) W 804 ×D 772 ×H 1802 mm

Inner dimension Upper chamber W 658 ×D 607 ×H 589 mm

Lower chamber W 658 ×D 607 ×H 603 mm

Effective chamber capacity 452 lit.

Exterior Zinc galvanized steel w/powder polyester coating (PCM)

Interior Polystyrene resin

Insulation Rigid polyurethane foam

Outer door Zinc galvanized steel w/powder polyester coating (PCM)

2 pcs (upper and lower compartment)

Latch 2 pcs

Door lock 1 pc

(M) 6 pcs (upper compartment)

Inner dimension: W290×D536×H136 mm

Basket (S) 8 pcs (lower compartment)

Inner dimension: W290×D536×H100mm

Accessories

Others Defrosting spatula 1 pc, key 1 set, 14 card holders

Caster 4 pcs

Leveling legs 2 pcs (with caster)

Access hole φ30mm. 2 places on rear.

Weights 136 Kg

Evaporator Tube on sheet type (function both evaporator and shelf)

Condenser Wire and tube type

Compressor Hermetic type 350W

HFC refrigerant

Refrigerant R-407D

Cooling performance -30℃(internal 1/2h air temperature, AT：35℃, no load)

-20℃~-30℃

Internal temperature control

range (AT：5℃~35℃、no load)

Power supply Local voltage

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