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Sanyo MDF-393 Service Manual Download Page 27

15.  Lamp, display and buzzer specifications

Lamp operation:

 <Control 

PCB> 

DP1: 

DP2: 

DP3: 

DP6: 

<Display PCB> 

DP51: 

DP53: 

DP54: 

DP55: 

Examples of display:

Orange 

lamp

Goes off: High/low temp. alarm (15min. delay), sensor error,

power failure 

Lit 

: Not in alarm condition 

Green 

lamp 

Goes off: L side compressor turns off. (normal condition) 
Lit 

: L side compressor turns on. 

Red 

lamp 

Goes off: Capillary heater turns off. (normal condition) 
Lit 

: Capillary heater turns on. 

Green 

lamp 

Goes off: H side compressor turns off. (normal condition) 
Lit 

: H side compressor turns on. 

Red 

lamp

Blinks  : High/low temp. alarm (without delay), or sensor failure,

or power failure 

Orange 

lamp 

Lit 

: In filter alarm 

Red 

lamp 

Lit 

: Door ajar 

Orange 

lamp 

Lit 

: Battery accumulation time is reached to about 3 years 

Blinks  : Fan motor accumulation time is reached to about 6 years 

Decimal point of chamber temp. -80.0

Chamber temp.  -79.5

㷄

 

Set temp.  

-80.0

㷄

 Sensor 

offset

㩷 㩷 㩷

          -5.0  

Operation monitoring

㩷 㩷

LCP

Function

㩷 㩷 㩷

          F03  

Error 

㩷 㩷 㩷 㩷

                E01  

Service code

㩷 㩷 㩷

 384 

Set value

㩷 㩷 㩷

 004 

Accumulation time

㩷 㩷

8H timer 135 

Key Lock

㩷 㩷 㩷

 L_0 

 Buzzer 

tone:

 Alarms 

Key operation 

Set value memory 
Out of settable range 
Filter blockage 

Intermittent 

tone 

Click tone 
Click tone 
1 second continuous tone 
Intermittent tone 

24

 

Summary of Contents for MDF-393

Page 1: ...Division 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 SM9910175 ...

Page 2: ...Effective models This service manual is effective following models Model name Product code Voltage and Frequency MDF 394 823 013 52 220V 50Hz 823 013 54 220 230 240V 50Hz MDF 393 N 823 013 56 220V 50Hz ...

Page 3: ... c t i o n s o n P C B 8 W i r i n g d i a g r a m 9 C i r c u i t d i a g r a m 1 0 E l e c t r i c s p e c i f i c a t i o n s 1 1 S p e c i f i c a t i o n s o f s e n s o r 1 2 C o n t r o l s p e c i f i c a t i o n s 1 4 P a r t s l a yo u t 2 5 T e s t d a t a 2 7 P u l l d o w n U n i t p r e s s u r e C u r r e n t a n d p o w e r c o n s u m p t i o n T e m p e r a t u r e d i s t r i b ...

Page 4: ...t 1 place left side inner diameter ij40mm Refrigeration circuit Secondary cooling system Compressor High stage side Hermetic type Output 450W Low stage side Hermetic type Output 750W Evaporator Tube on sheet type Condenser High stage side Fin and tube type Low stage side Shell and tube type Refrigerant High stage side R 404A Low stage side R 508 Refrigerant oil Ze NIUSL22SA Power supply Local volta...

Page 5: ...span F1 and PV are displayed alternately when battery accumulation time is about 3 yrs Fan motor lifespan F2 and PV are displayed alternately when fan motor accumulation time is about 6 yrs Control panel Lamps ALARM FILTER CHECK Buzzer key BUZZER Alarm test key ALARM TEST Set key SET Digit shift key Numerical value shift key Self diagnosis When any failure is occurred in sensor among temp sensor f...

Page 6: ...AT30C no load Temperature control range 50C㨪 86C㧔AT30C no load㧕 Power source 220V 50Hz 230V 50Hz 240V 50Hz Rated power consumption 620 W 650 W 680W Noise level 49 dB A background noise 20dB Maximum pressure 1 73 MPa Design or specifications will be subject to change without notice 3 ...

Page 7: ...4 Dimensions Over view Front view Side view ...

Page 8: ...12 columns x 3 lines P6 35mm Fin 38pcs Coil pipe Ǿ6 35mm Pre condenser W 250mm ʊ ʊ Frame pipe Ǿ6 35mm Evaporator Type Cascade condenser Shell and tube Ǿ80mm Tube on sheet Ǿ7 94mm Capillary tube Ex capillary Resistance PSI kg cm2 94 PSI G 0 363MPa 34 PSI G Length 1800mm 3000mm 500mm Outer diameter Ǿ2 0mm Ǿ2 0mm Ǿ2 4mm Inner diameter Ǿ1 0mm Ǿ0 9mm Ǿ1 2mm Refrigerant R 404A 4pt Charged q ty 331g R 50...

Page 9: ...2TG EQPFGPUGT QORTGUQT JGEM XCNXG EEWOWNCVQT 2TG EQPFGPUGT T EQTG QPFGPUGT TCOG RKRG CR VWDG 5WEVKQP JGCV GZEJCPIGT 2TG EQPFGPUGT CUECFG EQPFGPUGT QORTGUQT 1KN UGRCTCVQT CR VWDG CR VWDG VCPM 㨯㨯㨯2QKPV VQ RWNN XCEWWO XCRQTCVQT T GT GCFGT ...

Page 10: ...CVVGT 6Q 2QYGT VTCPUHQTOGT 0 6Q 5YKEJKPI RQYGT UWRRN 0 6Q EQOR TGNC 6Q 6GOR QPVTQN TGNC 6Q GCVGT TGNC 0 6Q 4GOQVG CNCTO VGTOKPCN 0 0 6Q 6GOR UGPUQT 0 6Q 6 UGPUQT 6Q KNVGT UGPUQT 0 6Q FKURNC 2 6Q 5YKVEJ 2 6Q W GT 6Q CUECFG UGPUQT ...

Page 11: ... Temp control relay 3 4 Heater relay To operate compressor L To operate cap tube heater 1 2 12VDC 3 4 12VDC CN5 1 5 Switch PCB 6 7 Buzzer PCB To connect with each switch To energize buzzer CN6 Display PCB To connect with each LED CN7 5 6 AT sensor 7 8 Filter sensor 9 10 Cascade sensor To detect ambient temperature To detect temperature on the outlet pipe of condenser To detect cascade temperature ...

Page 12: ...Wiring Diagram 9 ...

Page 13: ...Circuit Diagram 10 ...

Page 14: ...9 5A 20 5A Operation time 6 16sec 6 16sec Starting capacitor L Rating 160㱘F 250Vx2 160㱘F 250V Running capacitor L Rating 15㱘F 400V 15㱘F 400V Cap tube heater Rating 230VAC 12W 230VAC 12W Resistance AT25 4 7K㱅 4 7K㱅 Temp control relay Type G4F 11123T G4F 11123T Contact capacity 20A 250VAC 20A 250VAC Coil DC12V DC12V H comp relay Type G4F 11123T G4F 11123T Contact capacity 20A 250VAC 20A 250VAC Coil ...

Page 15: ...59 1 355 0 350 9 346 8 342 7 338 6 334 5 150 412 2 408 2 404 1 400 0 395 9 391 9 387 8 383 7 379 6 375 5 140 452 8 448 7 444 7 440 6 436 5 432 5 428 5 424 4 420 4 416 3 130 493 0 489 0 485 0 481 0 477 0 472 9 468 9 464 9 460 8 456 8 120 533 1 529 1 525 1 521 1 517 1 513 1 509 1 505 1 501 1 497 1 110 572 9 569 0 565 0 561 0 557 0 553 0 549 1 545 1 541 1 537 1 100 612 6 608 6 604 6 600 7 596 7 592 8...

Page 16: ... 1 1128 8 1132 6 1136 4 1140 1 1143 9 1147 7 40 1151 4 1155 2 1159 0 1162 7 1166 5 1170 2 1174 0 1177 7 1181 5 1185 2 50 1189 0 1192 7 1196 5 1200 2 1204 0 1207 7 1211 5 1215 2 1219 0 1222 7 60 1226 4 1230 2 1233 9 1237 6 1241 4 1245 1 1248 8 1252 6 1256 3 1260 0 70 1263 8 1267 5 1271 2 1274 9 1278 7 1282 4 1286 1 1289 8 1293 5 1297 2 80 1301 0 1304 7 1308 4 1312 1 1315 8 1319 5 1323 2 1326 9 1330...

Page 17: ...the Numerical value function mode F00 is displayed shift key 2 Temperature control Setting range 50㷄 90㷄 Display range 180㷄 50㷄 Setting procedure Press SET key and set the required value with key and key Press SET key to store the set value Unacceptable setting If you try to set the value which deviates from setting range the buzzer range beeps for 1 second to inform the value unacceptable 3 Key L...

Page 18: ...top the buzzer beeping Short circuit E04 When temperature in cascade sensor is equal or lower than 65㷄 E04 and chamber temperature are displayed alternately the buzzer beeps intermittently and remote alarm contact activates High side compressor is forcibly turned on and low side compressor is not controlled in any cascade temperature Press BUZZER key to stop the buzzer beeping 3 Filter sensor Open...

Page 19: ... buzzer stops beeping and remote alarm turns off If you press BUZZER key the buzzer stops beeping instead remote alarm does not turn off When chamber temperature is equal or lower than set temperature low temp alarm set temperature 1 0 ALARM lamp and LED display blinks intermittent buzzer beeps with approx 15 minutes of delay and remote alarm activates When chamber temperature is equal or higher t...

Page 20: ...d Ex 30㷄㩷 㸢㩷 displayed as 030 Battery accumulation time F03 Battery accumulation time is displayed Ex 2years and 6months accumulated 㸢㩷 displayed as 02 5 The display shows 02 8 to inform the battery exhaustion Replace with new battery Reset of accumulation time Step into F06 Input 409 and press SET key to turn the display to 00 0 with BATTERY lamp DP55 goes off Condensing fan motor accumulation ti...

Page 21: ...y test mode Unavailable F30 ROM version is displayed F31 Selectable buzzer ON OFF setting in filter alarm F32 Display of condensing fan motor accumulating time Setting In chamber temperature display keep pressing key over 5seconds to procedure display F00 Input the desired function code with key and key Press SET key to be function mode available You should input service code in F06 beforehand To ...

Page 22: ... Unit automatically reverts to chamber temperature display Reset of fan motor accumulation time Input service code 384 then 419 to reset fan motor accmulation time Unit automatically reverts to chamber temperature display F07 Purpose To match temperature of temp sensor with temperature of center at the chamber Operation Input service code in F06 prior to use this mode Input F07 and press SET key t...

Page 23: ...s SET key to store and revert to chamber temperature display Model code is identified by its power source Model code 006 for 220 240V Initial values in Non volatile memory PT sensor Zero Adjustment value 0㷄 Cascade sensor Zero Adjustment value 0㷄 Capillary heater turning on time 8 min Auto Recovery time 30 min Chamber temperature 80㷄 High temp alarm temperature 10㷄 Low temp alarm temperature Compr...

Page 24: ...put F26 and press SET key to display alternately F26 with XXX present running rate Press SET key to revert to chamber temperature display F30 Purpose ROM version is displayed Input F30 and press SET key to display alternately F30 with 1 00 Version 1 00 Press SET key to revert to chamber temperature display F31 Purpose Operation Selectable buzzer ON OFF setting during filter alarm Input F31 and pre...

Page 25: ...p Chamber Temp Set temp 0 4㷄 䌓et temp 1 4㷄 Cascade Cascade temp temp 34㷄 ON 䌈 OFF ON 䌌 OFF L Comp ON H L Comp OFF L Comp ON H L Comp OFF H Comp H Comp ON ON H side compressor protection H side compressor is turned off to prevent the compressor being warmed up that is caused by the fan motor locked Filter sensor temperature The High side compressor is turned off when the filter sensor temperature i...

Page 26: ...r 0 0㷄 4 AT sensor 0 0㷄 13 Remote alarm terminal Operation Once the alarm is triggered the remote alarm contact RLY2 switches the position CN3 1 2 N O 1 3 N C Normal Open Close In alarm Close Open 14 Power reset Setting values after the power is reset Alarms OFF Compressors OFF㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Remote alarm OFF㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Alarm resume time 30 minutes㩷 㩷 㩷 㩷 㩷 㩷 㩷 Door alarm delay...

Page 27: ...pressor turns on Red lamp Blinks High low temp alarm without delay or sensor failure or power failure Orange lamp Lit In filter alarm Red lamp Lit Door ajar Orange lamp Lit Battery accumulation time is reached to about 3 years Blinks Fan motor accumulation time is reached to about 6 years Decimal point of chamber temp 80 0 Chamber temp 79 5㷄 Set temp 80 0㷄 Sensor offset㩷 㩷 㩷 5 0 Operation monitori...

Page 28: ...view In the chamber Back side of control panel Power SW Battery SW Temp sensor CO2 back up discharge Filter AT sensor Switch PCB Left side area Temp control PCB Display PCB Cover for Temp control PCB 㪫㪼㫄㫇㪅㩷㪺㫆㫅㫋㫉㫆㫃㩷㪧㪚㪙 Battery Power transformer for PCB 25 ...

Page 29: ...ng fan motor䇭䇭Compressor L Back side Remote alarm terminal Starting relay L 12P terminal 3P terminal Cover for remote alarm terminal Electric BOX Starting relay H Heater relay Temp control relay Starting capacitor L Starting capacitor H Running capacitor L Running capacitor H H Comp relay 26 ...

Page 30: ...l down data SV 80㷄 㪉㪇 Chamber temp 㪇 Chamber temp 㷄䋩 㪄㪉㪇 㪄㪋㪇 㪄㪍㪇 㪄㪏㪇 㪄㪈㪇㪇 㪇 㪈 㪉 㪊 㪋 㪌 㪍 㪎 㪏 㪐 Time hour AT 30㷄 Unit pressure data 230V 㪉㪅㪇 㪈㪅㪌 Pressure MPa abs 㪈㪅㪇 㪇㪅㪌 Pressure_H_Pd Pressure_H_Ps Pressure_L_Pd Pressure_L_Ps 㪇㪅㪇 㪇 㪈 㪉 㪊 㪋 㪌 Time hour 㪍 㪎 㪏 㪐 27 ...

Page 31: ...Current and Power consumption 㪇㪅㪇㪇㪇 㪇㪅㪉㪇㪇 㪇㪅㪋㪇㪇 㪇㪅㪍㪇㪇 㪇㪅㪏㪇㪇 㪈㪅㪇㪇㪇 0 1 2 3 4 5 6 7 8 9 Time hour Power consumption䋨kW 㪇㪅㪇 㪉㪅㪇 㪋㪅㪇 㪍㪅㪇 㪏㪅㪇 㪈㪇㪅㪇 Current A Power consumption 230V Current 230V AT 30㷄 230V 28 ...

Page 32: ...1 2W 1 2W Rear side W H D Front side 5䋦D 1 2D 1 2D 5䋦W 5䋦W 㪈 㪉 㪊 㪋 㪌 Upper 5䋦D 50mmH Front 1 2H 1 2H Upper area Middle area Lower area 50mmH Left side 㪈㪌 Lower area 㪈㪈 㪈㪊 㪈㪉 㪈㪋 㪎 㪐 㪏 㪈㪇 Middle area 㪍 Rear side Rear side ...

Page 33: ...nt of power consumption SV 80㷄 AT 30㷄 Power source 100V50Hz 100V60Hz kWh day 12 1 11 5 Ave 78 9 79 3 SV 70㷄䇭AT 20㷄 100V50Hz 100V60Hz Max Min Center Variation Max Min Center Variation 㽲 63 7 71 5 67 6 3 9 64 2 71 2 67 7 3 5 㽳 64 1 71 8 68 0 3 9 64 3 72 0 68 1 3 8 㽴 63 7 71 4 67 5 3 8 63 9 71 4 67 7 3 7 㽵 63 8 71 4 67 6 3 8 64 0 71 1 67 6 3 6 㽶 62 3 70 7 66 5 4 2 62 5 70 8 66 6 4 2 㽷 67 2 72 7 70 0 ...

Page 34: ...㩷㾀 㫊㫍㪄㪎㪇㩷㽻 90 sv 80 105 㾀 120 sv 70 㽻 Time Min 㫊㫍㪄㪎㪇㩷㽶 㫊㫍㪄㪎㪇㩷㾀 Time Min sv 70 㽶 sv 70 㾀 0 15 30 45 60 75 90 105 120 0 15 30 45 60 75 AT30㷄䇭60Hz AT30㷄䇭50Hz 60 60 65 65 70 75 80 85 70 75 80 85 sv 80 㽻 sv 80 㽶 90 90 sv 80 㽻 sv 80 㽶 sv 80 㾀 sv 70 㽻 95 sv 80 㾀 sv 70 㽻 0 15 30 45 60 75 90 sv 70 105 㽶 120 sv 70 㾀 0 15 30 45 60 75 90 105 120 95 sv 70 㽶 sv 70 㾀 Time Min Time Min ...

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