Commercial Refrigerator Service Manual
Contents
1. 8 fan OFF switch dor m dpi Room probe display Pi Pi RI doorswitch dEF defrost LHt disabled Htr Cooling 42 dp2 Evaporator probe display Yes P2 P2 P2 43 rEL Softwarerelease 1 42 42 42 44 Pb Mapcode _ Ves 83 83 83 5 1 2 1 FRONT PANEL COMMANDS SET To display target set point select a parameter or confirm an operation in programming mode DEF To start a manual defrost UP To view the last alarm occurrence In programming mode it browses the parameter codes or increases the display value DOWN To view the last alarm occurrence In programming mode it browses the parameter codes or decreases the display value KEY COMBINATION To lock 8 unlock the keyboard SET To enter in programming mode SET loreturnto the room temperature display 1 1 Function of LEDS LED MODE FUNCTION Compressor enabled Flashing Programming Phase flashing with 4 Anti short cycle delay enabled 47 Flashing Programming Phase flashing with Drip time in progress Fans enabled Flashing Fans delay after defrost in progress Atemperature alarm occurred 2 MAIN FUNCTIONS 2 1 HOW TO VIEW THE SET POINT SET 1 Push and immediately release the SET key the display will show the set point value 2 Push and immediately release the SET key or wait for 5 seconds to displ2. COOLING COMPARTMENT CIRCLE FAN COVER Circle Fan Cover CIRCLE FAN Evaporator Fan Motor Blade Evaporator Fan Motor Fan Cover Evaporator Defrost Heating Element sens rr tSS suu 44 Evaporator Fan Fan Support 4 MAIN COMPONENTS 4 1 COMPRESSOR MODEL Refrigerant Voltage Comp Model Part code 4 2 COMPRESSOR RELAY Voltage Relay Model 4 3 CONDENSER DRYER MODEL Refrigerant Spec Part code SMG12 R 134a 115V 60Hz NE2121Z 27R 33 SMG12 115V 60Hz HLC 1XT04XA SMG12 R 134a XH 9 25g GN1410TN 14 4 4 CAPACITOR MODEL Voltage Running Starting 4 5 EVAPORATOR FAN MOTOR MODEL Voltage Motor Model Part code SMG12 115V 60Hz 160uf SMG12 115V 60Hz CA27 04 C20 27R 30 4 6 CONDENSER FAN MOTOR MODEL Voltage Motor Model Part code SMG12 115V 60Hz CA27 04 C19 27F 11 4 7 EVAPORATOR DEFROST HEATER MODEL SMG12 Voltage 115V 60Hz Spec Part code 4 8 LAMP MODEL SMG12 Voltage 115V 60Hz Spec T8 28W Part code HGD 12R 21 4 9 MAIN PCB MODEL SMG12 Voltage 115V 60Hz Model XR20C Part code 27R 10 5 ELECTRONIC CONTROLLER INSTRUCTION 5 1 1 DIXELL XR20C PARAMETER FOR REFRIGERATOR NO 1 SMG12 iss Differential 0 1 25 5 1 2 35 6 a me ue S Minimum set point 50 ESET
3. Yes 50 gt 58 FSET 58 Maximum set point SET Yes 110 23 110 CSET 0 Thermostat probe 12 12 120 0 32 calibration 120 F Y Y Y Evaporator probe n not presence pres y pres Evaporator probe 12 12 G120 Yes 0 32 mtt Ods Outputs delay at start up _ delay at start up mn Vee WE HEIL w a duration BEI faulty probe cor inte with faulty probe measurement unit Resolution in integer dE dec point 15 Lod Probedisplayed Yes P1 Pi Defrost termination Pbzby DES setting temper nP b Ta Defrost termination 50 50 C 58 EG tm temperature 122 F 18 IdF Interval between defrost 1 1200re 6 6 6 cyeles Maximum length defrost 21 Display during defrost Dir defrost Defrost delay after fast GAR os Fa Temperature rE related to Yes configuration set Ab absol ute MAX temperature alarm SET 110 23 ALU 110 CSET 0 230 F MIN temperature alarm 50 GSET aner a AEE 58 ESET 33 Ald Temperature alarm delay DI alarm at start up Digital input polarity oP opening CL closing EAL extern Digital input configuration alarm bAL I 37 did Digital input alarm delay ock Number of activation 4 E pressure regulation P AL press no Fanznorm al CPr com Compressor status with P open door i
4. CAUTION PLEASE SWITCH POWER OFF BEFORE SERVICING UNIT Commercial Refrigerator Service Manual GLASS DOOR MERCHANDISER SMG12 Please read this manual completely before attempting to install or operate this equipment TABLE OF CONTENTS 1 FEATURE CHART 1 1 OUTSIDE DRAWING AND MEASUREMENTS FOR SMG12 2 WIRING DIAGRAM 2 1 REFRIGERATOR 1 DOOR SMG12 3 PARTS DETAILS 3 1 BOTTOM PANEL 3 2 REFRIGERATION COMPARTMENT 3 3 DOOR 3 4 COOLING COMPARTMENT 4 MAIN COMPONENTS 4 1 COMPRESSOR 4 2 COMPRESSOR RELAY 4 3 CONDENSER DRYER 4 4 CAPACITOR 4 5 EVAPORATOR FAN MOTOR 4 6 CONDENSER FAN MOTOR 4 7 EVAPORATOR DEFROST HEATER 4 8 LAMP 4 9 THERMOSTAT 5 ELECTRONIC CONTROLLER INSTRUCTION 5 1 FREEZER CONTROLLER 5 1 1 DIXELL PARAMETER FOR REFRIGERATOR 5 1 2 HOW TO USE THE CONTROLLER 6 REPLACEMENT OF MAIN COMPONENTS 6 1 BOTTOM PANEL PARTS 6 2 REFRIGERATION COMPARTMENT PARTS 6 3 CONDENSING UNIT 1 FEATURE CHART 1 1 OUTSIDE DRAWING OF SMG12 2 WIRING DIAGRAM 2 1 SMG12 SI EN 3 PARTS DETAILS 3 1 FRONT PANEL THERMOSTAT MAIN SWITCH 3 2 REFRIGERATION COMPARTMENT CYCLE ASSEMBLY CONDENSER FILTER DRIER CONDENSER FAN MOTOR WATER PAN COMPRESSOR DRAIN PAN CONDENSER FAN MOTOR ASSEMBLY FAN COVER CONDENSER FAN MOTOR BLADE CONDENSER FAN MOTOR 3 3 DOOR Magnetic gasket can be replaced without any tools 3 4
5. ay the sensor value again 2 2 HOW TO CHANGE THE SET POINT 1 Push the SET key for more than 2 seconds to change the set point value 2 The value of the set point will be displayed and the LED starts blinking 3 To change the set value push the or 7 key within 105 4 To set new point value push the SET key again or wait 10s 2 3 HOW TO START A MANUAL DEFROST Push the key for more than 2 seconds and a manual defrost will start CF sh 2 4 HOW TO LOCK THE KEYBOARD f 1 Hold and 7 keys for more than 3s 2 The POF message will be displayed and the keyboard will be locked At this point it will be possible only to see the set point or the MAX or Min temperature stored 3 If a key is pressed more than 3s the POF message will be displayed 3 2 5 HOW TO UNLOCK THE KEYBOARD Hold the and Y keys together for more than 3s until the POF message is displayed 3 ALARM SIGNALS HOW TO VIEW THE ALARM AND RESET THE RECORDED ALARM PT Room probe failure Compressor output according to par 1 Hold the or keyto m Con and signal 5 displayed hold Condenser probe failure Outputs unchanged the SET key until the rst message Maximum temperature alarm tr Lae pr LA Minimum temperature alarm blinking and the normal temperature dA Door open Compressor and fans restart will be displayed again Serious external alarm i1F bAL All outputs OFF A
6. ll outputs OFF 6 REPLACEMENT OF MAIN COMPONENTS 6 1 FRONT PANEL PARTS 6 1 1 UNSCREW THE FRONT PANEL 6 1 2 TAKE OFF THE FRONT PANEL a m dg 19 a AA ci 6 1 3 UNSCREW THE JUNCTION BOX THE SWITCH LIGHT SWITCH AND THERMOSTAT CAN BE CHANGED 6 2 REFRIGERATION COMPARTMENT PARTS 6 2 1 UNSCREW THE SENSOR CLIP TAKE THE SENSOR OUT FROM THE CLIP 6 2 2 Unscrew the circle fan cover 6 2 3 PULL DOWN THE CIRCLE FAN COVER 6 2 4 UNSCREW THE FAN SUPPORT 6 2 5 CHANGE THE DEFROST HEATING ELEMENT A UNHOOK THE EVAPORATOR FROM ITS CASING B TAKE OFF THE ELEMENT AND CHANGE IT ib 144441444444 DINA Added 6 3 CONDENSING UNIT 6 3 1 TAKE OFF THE BOTTOM PANEL 6 3 2 UNSCREW THE UNIT BOARD YOU CAN PULL THE UNIT BOARD OUT FOR ANY REPAIR OR CLEANING BE CAREFUL OF ELECTRIC SHOCK AN CAUTION MAKE SURE THE POWER SUPPLY IS CUT OFF BEFORE ANY SERVICE IS PERFORMED CAUTION CONDENSING UNIT MAY BE VERY HOT BE SURE IT IS COOL BEFORE ANY SERVICE IS PERFORMED
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