Sanyo MDF-U5412 Service Manual

Service Manual

Biomedical Freezer

MDF-U5412

FILE No.

SANYO Electric Co., Ltd. Biomedical Business Division

SM9910214

Effective models

This service manual is effective following models.

Model Product code Voltage and Frequency

MDF-U5412 823 018 53 220V 60Hz

823 018 54 230/240V 50Hz 823 018 56 220V 50Hz

Page

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

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

- Structural specifications

- Control specifications

- Performance specifications

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

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

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

Electric components ------------------------------------------- 7

Components on PCB ------------------------------------------- 8

Specifications of sensor ------------------------------------------- 9

Control specifications ------------------------------------------- 10

Wiring diagram ------------------------------------------- 17

Circuit diagram ------------------------------------------- 18

Parts layout ------------------------------------------- 19

Test data ------------------------------------------- 22

- Pull-down characteristics

- Pull-up characteristics

- Pull-down pressure

- Pull-down power consumption & current

- Temperature uniformity

- Amount of power consumption

- Temperatures during cycle

Instruction manual ------------------------------------------- 27

Features

䂓㩷 Temperature control

New cooling system realizes to set to -20㷄 which is suitable for reagent preservation with ambient temperature at 30㷄.

䂓㩷 HFC refrigerant

Refrigerant circuit contains HFC refrigerant that effects to environment little.

Latest cooling system reduces negative factor to global environment. With ambient temperature at 30㷄, while temperature of inside chamber maintains -40㷄.

䂓㩷 Specification unified

Unified specification for same categories, which also realized to unify performance for high/low temperature alarm (the available setting range is between +5㷄 and +15㷄 for high temperature alarm, -5㷄 and -15㷄 for low temperature alarm against the set

temperature), power failure alarm, remote alarm terminal, setting memorization by

non-volatile memory.

䂓㩷 Self diagnosis function

Abnormal condition for temperature sensor is indicated as E1/E2 by self-diagnosis

system.

䂓㩷 Storage box

Storage box makes easily to access and arrange for stores.

䂓㩷 Validation

Control panel enable Zero “0” adjust for validation.

䂓㩷 Door latch mechanism

Door latch prevents the door from being ajar to preserve reagent without damaged.

Individual lock can be arranged. (Consult to your sales representative)

- 1 -

Specifications

Structural specifications

Item Specification

Name Biomedical freezer

Model MDF-U5412

Exterior dimensions

Interior dimensions

Effective capacity 482 liters

Exterior Painted steel

Interior cabinet Styrol resin

Outer door 2, Painted steel

Door latch 2

Door lock 1

Insulation Rigid polyurethane foamed-in place

Access port

Caster 4

Leveling legs 2

Weight 134 Kg

W 804 㬍 D 772 㬍 H 1802 mm W 658 㬍 D 607 㬍 H 1272 mm

㱢30mm, 2 on back side

Evaporator Tube on sheet type (also used as a shelf)

Condenser Wire and tube type

Compressor Hermetic rotary type, 400W

Compressor oil Ze-NIUSL22SA

Refrigerant R-404A (HFC refrigerant)

Battery

Accessories

Power supply Single phase, local voltage

Optional components

For power failure alarm, Nickel hydrogen battery, DC6V

1100mAh, Automatic charge (5HR-AAC)

1 set of key, 1 scraper

6 small baskets for upper chamber (W290 x D536 x H136 mm)

4 large baskets for lower chamber (W290 x D536 x H238 mm)

Temperature recorder: MTR-4015LH, MTR-G85

Mounting kit for MTR-4015LH: MPR-S30

Mounting kit for MTR-G85: MPR-S7

Interface board: MTR-480, MTR-L03

- 2 -

Control specifications

Item Specification

Microprocessor controlled system with non-volatilized memory.

Temperature controller

Temperature sensor Thermistor sensor (Type: 502AT)

Temperature display

High temp.

Low temp.

Remote alarm

Alarms

Control panel

Key lock function

Self diagnosis function

Compressor protection Overload relay (Internal)

Alarm resume time

Battery age

Fan motor age

Power failure

Settable range : -18㷄䌾-45㷄 (unit:1㷄) Memorized by Non-volatile memory

LED digital display (Unit: 1㷄) Range : -50㷄䌾+50㷄 SV+5㷄䌾+15㷄, changeable (Initial:+10㷄) ALARM lamp and LED display brink, buzzer beeps and remote alarm

activates with 15min. of delay SV-5㷄䌾-15㷄, changeable (Initial:-10㷄) ALARM lamp and LED display brink, buzzer beeps and remote alarm

activates with 15min. of delay Remote alarm terminal 3P; contact capacity DC30V, 2A (Max) Remote alarm activates when temp. alarm or power failure occur. Buzzer beeps again after alarm resume time expires Range; 10~60 min, changeable (Initial: 30min.) (Unit: 10min.) 000: Not resumed When battery accumulation time reaches about 2.8 years, battery will be recommended to replace by displaying chamber temperature and ‘F1’ alternately. When fan motor accumulation time reaches about 5.6 years, fan motor will be recommended to replace by displaying chamber temperature and ‘F1’ alternately. ALARM lamp brinks, buzzer beeps and LED display turns off. Remote alarm activates. ALARM lamp BUZZER: Buzzer stop key ALARM TEST: Alarm test key SET: Setting key

䋾: Digit shift key 㺢: Numerical value shift key

DEF: Defrost key Press 䋾key for 5 seconds to step in Key Lock mode. L0: Unlocked L1: Locked When a sensor is failed, error code and chamber temperature are

displayed alternately. Remote alarm activates and buzzer beeps.

Performance specifications

Item Specification

Cooling performance

Temperature control range

Power source 220V, 50Hz 220V, 60Hz 230/240V, 50Hz

Rated power consumption 240W 285W 255/290W

Noise level

Maximum pressure 1.80MPa

-40㷄 (AT;30㷄, no load)

-20㷄䌾-40㷄

42dB [䌁] (background noise; 20 dB)

- 3 -

Dimensions

- 4 -

Cooling unit parts

MDF-U5412

Parts name Specifications

Compressor

Dryer Type D-SM032T Capillary tube

Condenser

Refrigerant

<For 220~240V, 50Hz> Type C-1RN40L5C Compressor cord 802 012 152 Rated power supply Single phase, 220~240V, 50Hz

Oil

Cooling method Air circulation by fan Starting relay AMVL-300A Overload relay Internal Starting capacitor 40μF-300VAC Running capacitor 12μF-370VAC <For 220V, 60Hz> Type C-1RN40L6A Compressor cord 802 012 162 Rated power supply Single phase, 220V, 60Hz

Oil

Cooling method Air circulation by fan PTC AMVL-300A Overload relay Internal Starting capacitor 40μF-300VAC Running capacitor 10μF-400VAC Type Direct cooling tube on sheet type Evaporator

Accumulator

Resistance 0.73MPaG Length䋨L䋩 Outer diameter䋨OD䋩㱢1.8 mm Inner diameter䋨ID䋩㱢0.7 mm Type Natural convection

Condenser

Pre-condenser ----Frame pipe Type Oil additive n-pentane Charged q’ty: 11g (18cc)

Ze-NIUSL22SA Charged q㵭ty: 230cc

㱢30 × L140 × T1.0 mm

4500 mm

Wire and tube type 1 line × 6 columns x P40mm × W480 mm

㱢4.0 x T0.5

R-404A Charged q㵭ty: 259g

- 5 -

≧≧≧

Refrigeration Circuit

- 6 -

Pre-condenser

Frame pipe

Condenser

Accumulator

Check valve

Dryer

Capillary tube

Solenoid valve

Capillary tube

Evaporator

Header

Compressor

• • • • •

Point to evacuate

Compresso

Type C-1RN40L6

C-1RN4L5C C-1RN4L5C

Code 802 012 16 802 012 15 802 012 15

Rated voltage (50/60Hz) 220V, 60Hz 220~240V, 50Hz 220~240V, 50Hz

Winding resistance C-R(Main) 5.34㱅(25㷄)7.37㱅(25㷄)7.37㱅(25㷄)

C-S(Aux) 8.88㱅(25㷄) 15.76㱅(25㷄) 15.76㱅(25㷄)

Startin

rela

Type AMVL-300

AMVL-300

Pick up voltage AC185V~217V AC185V~217V AC185V~217V

AC215V~232V AC215V~232V AC215V~232V

Drop out voltage AC60~120V AC60~120V AC60~120V

AC69~132V AC69~132V AC69~132V

Starting capacito

Rating 40㱘F, 300VAC 40㱘F, 300VAC 40㱘F, 300VAC

Running capacito

Rating 10㱘F, 400VAC 12㱘F, 370VAC 12㱘F, 370VAC

Temp. control rela

Type G4F-11123T G4F-11123T G4F-11123T

Contact capacit

AC220V, 20

Coil DC12V DC12V DC12V

Solenoid valve rela

Type G2R-1A-T G2R-1A-T G2R-1A-T

Contact capacit

AC250V, 10

Coil DC12V DC12V DC12V

Switching power suppl

Type ZWS10-12/J ZWS10-12/J ZWS10-12/J Input AC100-240V 50-60Hz, 0.3

AC100-240V 50-60Hz, 0.3AAC100-240V 50-60Hz, 0.3

Rated outpu

DC12V, 0.85

Temp. senso

Type 502AT-1 502AT-1 502AT-1

Rating 5K㱅, 25㷄 5K㱅, 25㷄 5K㱅, 25㷄

Valve senso

Type 502AT-1 502AT-1 502AT-1

Rating 5K㱅, 25㷄 5K㱅, 25㷄 5K㱅, 25㷄

Batter

Type 5HR-AAC 5HR-AAC 5HR-AAC

Rating 6V 1100MAH 6V 1100MAH 6V 1100MAH

Batter

switch

Type SLE6A2-5 SLE6A2-5 SLE6A2-5

Rating AC250V 4

AC250V 4

Breaker switch

Type BAM215131 BAM215131 BAM215131

Rating AC250V 15

AC250V 15

Solenoid valve

Type NEVAC220V NEVAC220V NEVAC240V

Rating 220V 50/60Hz 220V 50/60Hz 240V 50/60Hz

Type FU2-C051B5MP FU2-C051B5MP FU2-O051B5MP

Rating AC220-240V 50/60H

AC220-240V 50/60H

Thermal fuse 130㷄 130㷄 130㷄

AC230V/240V, 50Hz

Condensing fan motor

MDF-U5412

AC220V, 60Hz AC220V, 50Hz

Electric components

- 7 -

CN7 #3-#4 To Valve sensor #9-#10 To Temp.sensor

Components on PCB

CN8 #1-#2 To Battery 6V

CN1 #1,#3 To Switching power supply

CN2 #1-#6 To MTR-480 (Option)

CN6 #1-#12 To Display PCB (CN52)

CN5 #1-#6 To Display PCB (CN51) #7-#8 To Buzzer

CN3 #1-#3 To Remote alarm terminal

CN4 #1-#2 To Temp.control relay #3-#4 To Solenoid valve relay

- 8 -

Specifications of sensor

The following shows temperature and resistance characteristics on each thermistor sensor

(type 502AT-1).

Temperature

䋨㷄䋩䋭50

䋭45

䋭40

䋭35

䋭30

䋭25

䋭20

䋭19

䋭18

䋭17

䋭16

䋭15

䋭14

Resistance

䋨k㱅䋩

154.50

116.50

88.85

68.15

52.84

41.19

32.43

30.92 0 13.29 19 6.24

29.50 1 12.74 20 6.01

28.14 2 12.22 25 5.00

26.87 3 11.72 30 4.18

25.65 4 11.25 35 3.51

24.51 5 10.80 40 2.96

Temperature

䋨㷄䋩

䋭7

䋭6

䋭5

䋭4

䋭3

䋭2

䋭1

Resistance

䋨k㱅䋩

17.92 12 8.17

17.16 13 7.85

16.43 14 7.55

15.74 15 7.27

15.08 16 6.99

14.45 17 6.73

13.86 18 6.48

Temperature

䋨㷄䋩

Resistance

䋨k㱅䋩

䋭13

䋭12

䋭11

䋭10

䋭9

䋭8

23.42 6 10.37 45 2.51

22.39 7 9.96 50 2.14

21.41 8 9.57 55 1.83

20.48 9 9.20 60 1.57

19.58 10 8.84

18.73 11 8.49

- 9 -

Control specifications



㩷

1. Keys on control panel

BUZZER : When alarm lamp blinks and buzzer sounds, press this key to

stop buzzer and remote alarm operation.

When you set alarm resume time (except for 000) in F25, buzzer

will sound again after the time elapses. : Buzzer does not activate during alarm test performs. : When alarm lamp blinks and buzzer does not activate, buzzer

will not activate if you press BUZZER key. : When you press this key during power failure, current chamber

temperature will be displayed for 5 seconds.

SET : Press this key to step to setting mode.

Press this key again to memorize setting value.

(It functions as ENTER key)

DEF : In chamber temperature displays, press this key for 5 seconds to

start defrosting with chamber temperature and ‘dF’ are displayed

alternately. Press this key during defrost performs to come defrosting to end. High/low temperature alarm will not activate during defrost

performs. When sensor is failed during defrost performs, an error code and

chamber temperature are displayed alternately. (‘dF’ will be gone

off.) During defrost performs, any keys but BUZZER are inoperative.

ALARM TEST : In chamber temperature displays, press this key to activate

alarm test mode. Press the key again to stop ALARM TEST performing. When BATTERY switch is ON position, press this key to blank

the display, ALARM lamp blinks and buzzer sounds.

When BATTERY switch is OFF position, press this key to display

“E09”, ALARM lamp blinks and buzzer sounds. During alarm test performs, any keys but ALARM TEST key are

inoperative.

Digit shift key : Press this key is in setting mode that enables changeable digit to

shift. Press this key for 5 seconds to step to Key Lock mode. (‘L

0’ displays)

Numerical value

shift key :

Press this key in setting mode that enables numerical value to

shift. Press this key for 5 seconds to step to Key Lock mode. (‘L

0’ displays)

2. Temperature control, high & low temperature alarm

<Temperature control> Setting range :

Display range : How to set : Press SET key to set required value using with digit shift key and

-18㷄䌾-45㷄

-50㷄䌾+50㷄

numerical value shift key. Press SET key again to memorize the

value.

- 10 -

Unacceptable setting : When you try to set value out of range and press SET key,

buzzer sounds for 1 second to inform the value is unacceptable

to set.

<Alarms> High temperature alarm : When a chamber temperature is higher than setting temperature

+5㷄䌾+15㷄 (initial: +10㷄), ALARM lamp and digital display

blink. Buzzer sounds and remote alarm output activates with 15

minutes delay.

Low temperature alarm : When a chamber temperature is lower than setting temperature

-5㷄䌾-15㷄 (initial: -10㷄), ALARM lamp and digital display blink.

Buzzer sounds and remote alarm activates with 15 minutes

delay.

How to set : Press numerical value shift key for 5 seconds to step to Function

mode (“F00” displays). Set “ F01” by using numerical value shift

key for setting high temperature alarm, set “F02” for setting low

temperature alarm.

Press SET key and set a required value by numerical value shift

key and digit shift key.

Press SET key again to memorize the value.

Unacceptable setting : When you try to set value out of range and press SET key,

buzzer sounds for 1 second to inform the value is unacceptable

to set.

3. Defrosting

In chamber temperature display, press DEF key for 5 seconds to start defrosting. Compressor and solenoid valve are inoperative during defrosting. Press DEF key again to come defrosting to the end.

4. Error codes

Error code priority

High

Low

Note) “E09” and “Blank” are displayed during power failure.

E01 : Temperature sensor is disconnected.

“E01” and “-50㷄” are displayed alternately.

E02 : Temperature sensor is short circuited.

“E02” and “+50㷄” are displayed alternately.

E09 : BATTERY switch is off position.

“E09” is displayed if BATTERY switch is off poison when the

power is supplied.

E11 : Valve sensor is disconnected.

“E11” and “-50㷄” are displayed alternately.

E12 : Valve sensor is short circuited.

“E12” and “+50㷄” are displayed alternately.

- 11 -

5. Key lock function

In chamber temperature display, press digit shift key for 5 seconds to step to Key Lock mode

with “L 0” displayed.

When you set to “1” by using numerical value shift key, Key Lock is ON.

Once Key Lock is ON, values are unchangeable, defrosting cannot be performed, while Function mode is operative and ALARM test can be performed.

Press SET key to memorize value and unit returns to chamber temperature display.

When you set to “0” by using numerical value shift key, Key Lock is OFF.

Power failure alarm (buzzer and display are not operative without power supplied)

When a power is failed, power failure alarm will be given by battery. ALARM lamp will blink, digital display will go off, buzzer will sound intermittently and remote

alarm output will activate. Buzzer will stop sounding if BUZZER key is pressed. Press BUZZER key to show a current chamber temperature for 5 seconds. Any keys but BUZZER key will be inoperative during power failure alarm.

7. Alarm test

This function is to ensure ALARM lamp, buzzer and remote alarm are workable. In chamber temperature display, ALARM lamp will blink, buzzer will sound, remote alarm will

activate and digital display will go off when you press ALARM TEST key. Any keys but ALARM TEST key will be inoperative during ALARM TEST is performed. Note) E09 will be displayed even if other error code displays prior to perform alarm test.

8. Auto return function

If there are no key operations for 90 seconds in setting mode or key lock mode or function

mode, a value which will be set is not memorized and unit returns to chamber temperature

display.

9. Compressor delay time

In cycle operation, compressor will inactivate for 3 minutes since the compressor turns off.

When the power is supplied (micro computer is reset), compressor delay time is changeable

(3~15 minutes). See Function mode, ‘F05’ for details.

10. Function mode

F01: Setting of high temperature alarm F02: Setting of low temperature alarm F05: Setting of compressor delay time F06: Setting of service code F07: Zero calibration of temp. sensor F12: Display of temperature of temp. sensor F15: Display of temperature of valve sensor F17: Check of model code F21:

F22: Setting of communication mode F25: Setting of alarm resume time F32: Display of fan motor accumulation time F45: Display of battery accumulation time F46: Display of diagnosis value

Setting of communication ID (000䌾255)

- 12 -

How to step to Function mode: In chamber temperature display, press numerical value shift key for 5 seconds to step to

Function mode with “F00” displays. Input required function code by numerical value shift key and press SET key.

F01: Setting of high temperature alarm

Setting range is +5㷄䌾+15㷄. (Initial: +10㷄)

F02: Setting of low temperature alarm

Setting range is -5㷄䌾-15㷄. (Initial: -10㷄)

F05: Setting of compressor delay time

This function is to reduce compressor start-up failure and breaker tripping which will be

caused after power failure. Setting range is 3䌾15 minutes. (Initial: 3 minutes)

This function is active when the power is supplied (micro-computer is reset).

F06: Input service code ‘384’ by numerical value shift key and digit shift key, prior to perform

F07 or latter number function codes. Press SET key to memorize the value. You can change value for F21 and F22 without inputting service code. Note) Service code will be memorized until you input “000” in F06 or the main power turns

off.

Input service code, ‘384’ then ‘409’ to reset battery accumulation time. Unit

automatically reverts to chamber temperature display.

Input service code, ‘384’ then ‘419’ to reset fan motor accmulation time. Unit automatically reverts to chamber temperature display.

F07: Zero calibration of temp. sensor

Input service code “384” prior to use the function.

Setting range is -9.9㷄~+9.9㷄.

In “F07” display, press SET key to display “00.0” (initial value), and set temperature by

numerical value shift key and digit shift key.

Press SET key to memorize the value. Zero calibration of temp. sensor is done by differential input. Ex.)

When measured center temperature is –28.5㷄and display temperature is –30㷄, you should add +1.5 to the value in F07. (Calculation: -28.5 – (-30))

F12: Display of temperature of temp. sensor

Input service code “384” prior to use the function.

Display range is -72.0~+83.0.

Decimal point is displayed but minus code, “-“ of a value which is equal or lower than

-20㷄 is not displayed.

Ex.)

Actual temperature: -35㷄 -> Displays as “35.0”

F15: Display of temperature of valve sensor

Input service code “384” prior to use the function.

Display range is -72.0~+163.

- 13 -

F17: Check of model code 004: MDF-U5412 Input service code “384” prior to use the function.

In “F17” display, press SET key to display “001” (initial) and change the value by numerical value shift key. Press SET key to memorize the value.

Initial setting values Chamber temp

: -40㷄

Key lock mode : 0 (OFF) High temp. alarm

Low temp. alarm Zero calibration

: Set temperature +10㷄 : Set temperature -10㷄 : +0㷄 (for temp. sensor)

Compressor delay time : 0 minutes Communication ID : 000 Communication mode : 000 Alarm resume time : 030 (30 minutes)

F21: Setting of serial communication ID

Settable range: 000䌾255 (000: No communication)

F22: Setting of serial communication mode Control mode (The 3 1: Remote Baud rate (The 2

digit) 0: Local (Initial)

digit) 0: 2400bps (Initial) 1: 4800bps 2: 9600bps Note 1) The 1

digit is not used.

2) When you set mode in “Remote”, you cannot change chamber temperature and

perform defrosting in unit directly.

F25: Setting of alarm resume time

Settable range: 000, 010, 020, 030, 040, 050, 060 (000: Not resume)

F32: Display of condensing fan motor accumulation time

Input service code “384” prior to use the function.

Input F32 and press SET key to display F32 and “XX.X” (“00.0” will be displayed if the accumulation time is less than a month) alternately. Press SET key to return to chamber temperature display.

F45: Display of battery accumulation time

Input service code “384” prior to use the function. Input F45 and press SET key to display F45 and “XX.X” (“00.0” will be displayed if the accumulation time is less than a month) alternately. Press SET key to return to chamber temperature display.

F46: Display of diagnosis temperature for valve control

Input service code “384” prior to use the function.

Input F46 and press SET key to display F46 and diagnosis temperature (-20.0~-40.0) alternately. Press SET key to return to chamber temperature display.

- 14 -

11. Differential temperature

When chamber temperature is equal or higher than set temperature, it allows compressor to

activate. When chamber temperature is equal or lower than set temperature – 0.6㷄, compressor will be inoperative.

12. Remote alarm

In normal operation : Remote alarm contact is opened In alarm or power failure : Remote alarm contact is closed

13. Solenoid valve

Solenoid valve is a magnetic valve which transfers gas to capillary tube that is located in the

center of evaporator.

(1) In condition that -18㷄҈SV (set temperature) 㻡-25㷄;

Solenoid valve will forcibly inactivate when PV (chamber temperature) - SV (set temperature) +5㷄 ҈ 0

Ex. 1) SV(set temperature): -20㷄 PV(chamber temperature): -10㷄 (-10) – (-20) + 5 = 15 ……15 is higher than 0 => Solenoid valve inactivates forcibly

2) SV(set temperature): -20㷄 PV(chamber temperature): -30㷄 (-30) – (-20) + 5 = -5 …… -5 is lower than 0 => Solenoid valve activates

(2) Diagnosis value for valve operation Solenoid valve is controlled with every 30 minutes by comparing diagnosis value with

SV(set temperature). The comparison is done after 1 minute elapses since the unit was started.

In condition that AT(ambient temperature) 㻡18.0㷄, diagnosis value is -40.0㷄.

In condition that AT(ambient temperature) 䋾18.0㷄, diagnosis value is 0.6 x AT(ambient

temperature) – 51

In condition that AT(ambient temperature) 㻢 diagnosis value, solenoid valve is linked

with compressor. That is, solenoid valve transfers gas to the capillary tube when compressor activates.

Ex. 1) AT(ambient temperature): 15㷄 SV(set temperature): -40㷄 Diagnosis value is -40.0㷄.

AT(ambient temperature) is higher than -40㷄(diagnosis value) so solenoid valve links with compressor.

2) AT(ambient temperature): 20㷄 SV(set temperature): -35㷄 Diagnosis value is 0.6 x 20(AT) – 51 = -39 Diagnosis value (-39) is lower than -35(diagnosis value) so solenoid valve links

with compressor.

3) AT(ambient temperature): 35㷄 SV(set temperature): -35㷄 Diagnosis value is 0.6 x 35(AT) – 51 = -30 Diagnosis value (-30) is higher than -35(set temperature) so solenoid value does

not link with compressor. That is, solenoid valve does not transfer gas to the capillary tube.

- 15 -

(3) Summary In condition of (1) (ambient temperature is equal or higher than set temperature + 6㷄),

solenoid valve forcibly activates.

In condition of (2), solenoid valve is controlled by diagnosis value to enable unit to reach

set temperature if both of capillary tube are used in high ambient temperature.

Solenoid valve is used to control chamber temperature uniformity in condition of higher

set temperature and to enable unit to reach set temperature in condition of higher ambient temperature.

- 16 -

Wiring diagram

- 17 -

+ 44 hidden pages

Sanyo MDF-U5412 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Service Manual

Effective models

Contents

Features

Specifications

Dimensions

Cooling unit parts

Refrigeration Circuit

Electric components

Components on PCB

Specifications of sensor

Control specifications

Wiring diagram