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SERVICE MANUAL TANGO KW (short version) ENGLISH

Autori: Serralunga M.

16/07/2020

4

NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT

2. REFRIGERATION SCHEMATICS FOR THE EQUIPMENT

2.1

REFRIGERATION DIAGRAM FOR THE COOLING CYCLE

TANGO

125

KW

Point into which

nitrogen needs to be

blown to remove

propane from the

pipework.

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Содержание TANGO 125 KW

Страница 1: ...rsion ENGLISH Autori Serralunga M 16 07 2020 1 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT TANGO 125 KW TANGO 188 KW TANGO 250 KW Service Manual COQ Project IA27 TANGO KW Service Manual short version ...

Страница 2: ...ROCEDURES FOR REFRIGERATION UNITS USING R290 14 5 2 PROTECTION TOOLS AND DEVICES FOR SERVICING 15 5 3 HOW TO EMPTY THE COOLING CIRCUIT AND PROVE IT BEFORE SERVICING 18 5 4 COMPRESSOR REPLACEMENT 19 5 5 UNSOLDER COPPER PIPE TUBE 20 5 6 COMPRESSOR REMOVING 20 5 7 NEW COMPRESSOR INSERTION 21 5 8 HIGH PRESSURE PIPE CLOSING 21 5 9 REFRIGERANT GAS CHARGING AND THERMODYNAMIC CIRCUIT CLOSING 22 5 10 CHECK...

Страница 3: ...W 150 TANGO 250 KW 300 The propane refrigerant R290 to be used must be technical gas rated with purity grade above 99 5 PROPANE IS HEAVIER THAN AIR WHICH MEANS THAT IT WILL TEND TO CONCENTRATE NEAR THE FLOOR OF THE ROOM The flammability limit percentage in a volume of air is between 2 2 and 9 2 at 25 C and 1bar In mass terms If the entire amount of refrigerant is released in the chest of a TANGO K...

Страница 4: ... 2020 4 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 REFRIGERATION SCHEMATICS FOR THE EQUIPMENT 2 1 REFRIGERATION DIAGRAM FOR THE COOLING CYCLE TANGO 125 KW Point into which nitrogen needs to be blown to remove propane from the pipework ...

Страница 5: ...tori Serralunga M 16 07 2020 5 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 2 REFRIGERATION DIAGRAM FOR THE COOLING CYCLE TANGO 188 KW Point into which nitrogen needs to be blown to remove propane from the pipework ...

Страница 6: ...G IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 3 REFRIGERATION DIAGRAM FOR THE COOLING CYCLE TANGO 250 KW Point into which nitrogen needs to be blown to remove propane from the pipework Point into which nitrogen needs to be blown to remove propane from the pipework ...

Страница 7: ...N ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 4 VIEW OF THE MOTOR COMPARTMENT AND RELEVANT PIPEWORK TANGO 125 KW CONDENSER EVAPORATING WATER TRAY CONDENSER MOTOR FAN CONDENSER MOTOR FAN COMPRESSOR DISCHARGE LINE DISCHARGE LINE FILTER DRYER CAPILLARY CHARGE TUBE INVERTER ...

Страница 8: ... COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 5 VIEW OF THE MOTOR COMPARTMENT AND RELEVANT PIPEWORK TANGO 188 KW CONDENSER DISCHARGE LINE FILTER DRYER EVAPORATING WATER TRAY DISCHARGE LINE CAPILLARY CONDENSER MOTOR FAN COMPRESSOR CHARGE TUBE INVERTER ...

Страница 9: ...T WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 2 6 VIEW OF THE MOTOR COMPARTMENT AND RELEVANT PIPEWORK TANGO 250 KW DISCHARGE LINE DISCHARGE LINE DISCHARGE LINE EVAPORATING WATER TRAY CONDENSER MOTOR FAN COMPRESSOR CHARGE TUBE CONDENSER MOTOR FAN CONDENSER DISCHARGE LINE FILTER DRYER FILTER DRYER INVERTER ...

Страница 10: ...or is supplied of shelves with adjustable stirrup their position in the tank can be set as desired by moving the shelf supports on the fixed racks inside the tank On the bottom of the tank there is the evaporator cover under which the internal motor fans protection grills is secured Under the cover are placed the finned evaporator TANGO 125 KW CAPILLARY EVAPORATOR INPUT DEFROST PROBE SUCTION PIPE ...

Страница 11: ...version ENGLISH Autori Serralunga M 16 07 2020 11 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT TANGO 188 KW CAPILLARY EVAPORATOR INPUT SUCTION PIPE EVAPORATOR OUTLET DEFROST PROBE TEMPERATURE PROBE ...

Страница 12: ...version ENGLISH Autori Serralunga M 16 07 2020 12 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT TANGO 250 KW CAPILLARY EVAPORATOR INPUT SUCTION PIPE EVAPORATOR OUTLET DEFROST PROBE TEMPERATURE PROBE ...

Страница 13: ...N THE CABINET There are two probes in the TANGO KW models Model Position of probe Probe Colour Function Probe Epta code TANGO 125 KW TANGO 188 KW Evaporator Tank Yellow Black Defrost Display Thermostat I0205778 140692 TANGO 250 KW Evaporator Tank Yellow Black Defrost Display Thermostat I0205780 140692 Position of probe touching Position of probe touching Position of probe touching ...

Страница 14: ...V V 1 7 The very low quantity of refrigerant used and the safe design possible ignition sources enclosed in a metal box far from the potential explosive areas make this unit totally safe in use Caution must be used during servicing and with this respect it is essential to understand the basic concept of flammability Three ingredients are needed for a fire a fuel at the right concentration a supply...

Страница 15: ...e refrigerating hermetic circuit compressor dryer condenser evaporator capillary refrigerant needs to be serviced the basic safe guideline must be always followed NEVER USE FLAMES OR HEAT SOURCES IF FLAMMABLE REFRIGERANT IS PRESENT INSIDE THE REFRIGERATING CIRCUIT Flames can be used only when there is evidence that no flammable substance is still inside the circuit or the circuits IN CASE OF MULTI...

Страница 16: ...NG IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT Devices for servicemen LOW PRESSURE SUCTION GAUGE REFRIGERANT PINCH OFF TOOL ELECTRONIC LEAK DETECTOR REFRIGERAT JUNCTIONS LOCKRING JOINT PLIER LOCKRING JOINT WITH CLOSED SIDE REFRIGERANT GAS BOTTLE NITROGEN GAS BOTTLE ...

Страница 17: ...KW short version ENGLISH Autori Serralunga M 16 07 2020 17 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT REFRIGERANT SCALE VACUUM PUMP LOKPREP SEALANT ORBITAL CUTTER SCREWDRIVER WRENCH n 10 ...

Страница 18: ...C Cut the capillary tube D exiting the filter dryer When the inside pressure is equalized with the ambient pressure blow nitrogen at 10 bars in the circuit through the service pipe on high pressure side B and check that it flows out through the other service pipe on the low pressure side continue to blow nitrogen for at least 5 minutes At the end of this procedure NO FLAMMABLE REFRIGERANT CAN REMA...

Страница 19: ...ION FROM EPTA QUALITY MANAGEMENT TANGO 125 KW TANGO 188 KW Epta code 45911034 Model SECOP NLV12 6CN 198 254V 50 60HZ TANGO 250 KW Epta code 45911034 2 Pc Model SECOP NLV12 6CN 198 254V 50 60HZ Epta code for filter 46363000 Model Filter gr 20 øi 6 2 3 2 Note when the compressor is replaced the filter drier must be replaced too ...

Страница 20: ... COPPER PIPE TUBE After being that no more refrigerant gas is inside the thermodynamic circuit unsolder from compressor the charge pipe A the suction pipe 1 and the discharge pipe 2 5 6 COMPRESSOR REMOVING Unscrew the 4 screws of compressor by using the wrench n 10 Using the screwdriver for unscrew the compressor box if present A 1 2 Picture example of motor compartment ...

Страница 21: ...e of 8 bar Close the circuit to hold the pressure in then search for circuit leaks using a leak detector Adjust the sensitivity of the electronic leak detector when available and test each and every soldering The sensor will beep when a leak is found Connect the vacuum pump to the compressor and filter service intakes and hold the vacuum for at least 30 40minutes value depending on pump features T...

Страница 22: ...joint 5 on the high pressure pipe B Rotate the joint 5 for correctly distribute the sealant 4 By using the lockring plier 6 fix joint 5 on the copper pipe B 5 9 REFRIGERANT GAS CHARGING AND THERMODYNAMIC CIRCUIT CLOSING Check the refrigerant charge on the data label inside the cabinet Using a balance 7 verify the quantity of refrigerant gas in the gas bottle 8 5 B 6 5 B 7 8 ...

Страница 23: ...rder to insert the refrigerant gas into the circuit WARNING in order to avoid damages on the thermodynamic system or danger for technical assistant be sure to have connected the gas bottle to the refrigerator circuit The refrigerator must be ON for 5 6 minutes then disconnect the refrigerator from current Take the plier 3 and pinch the low pressure pipe A then remove refrigerant junction Put a dro...

Страница 24: ...2020 24 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT Insert lockring joint 5 on the low pressure pipe A Rotate the joint 5 for correctly distribute the sealant 4 By using the lockring plier 6 fix joint 5 on the copper pipe A 4 A 1 5 A 6 5 A ...

Страница 25: ...SION FROM EPTA QUALITY MANAGEMENT 5 10 CHECK THE CORRECT CLOSING OF THERMODYNAMIC CIRCUIT Use the electronic leak detector 9 in order to check if leak of gas are present End of high pressure pipe lockring joint End of low pressure pipe lokring joint Suction pipe welding Charge pipe welding Discharge pipe welding TANGO 125 KW ...

Страница 26: ...SERVICE MANUAL TANGO KW short version ENGLISH Autori Serralunga M 16 07 2020 26 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT TANGO 188 KW TANGO 250 KW ...

Страница 27: ...exagonal head screw marked in figure extract the motor fan from compressor compartment unscrew the hexagonal head screw fixing the motor fan blade and remove the screws fastening the motor to its metal support 5 12 REPLACEMENT OF EVAPORATOR MOTOR FAN 1 Unscrew and remove evaporator cover 2 Disconnect the motor fan connectors 3 Unscrew and remove the motor fan Epta code I0220093 Model ECM 12 15 115...

Страница 28: ...wn to 2 Unscrew the cable clamp screws by mean of a cross head screwdriver in order to release the cable itself Repeat the above steps backwards to complete the power cord replacements 5 14 REPLACEMENT OF ELECTRONIC CONTROLLER 1 Remove the control support panel 2 Unscrew and remove the electronic control 3 Remove the lateral clips and disconnect connectors 1 2 3 Epta code Electronic controller 747...

Страница 29: ...Serralunga M 16 07 2020 29 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 5 15 REPLACEMENT OF LED BARS 1 Remove the led cover and wires cover 2 Disconnect the led connector 3 Unscrew the top and lower screws of led support ...

Страница 30: ...ta code for ballast I3305398 Model EL BALLAST LPV 100 24 Epta code for LED lamp 42838000 LED LAMP 6 5W 1150X15X6 24VDC Epta code for LED lamp 42839000 LED LAMP 15 5W 1605X15 24VDC Epta code for LED lamp 42840000 LED LAMP 15 5W 1605X15 24VDC SX Epta code for LED lamp 42838000 LED LAMP 6 5W 1150X15X6 24VDC Epta code for LED lamp 48321000 LED LAMP 2 5W L 520 24VDC Epta code for LED lamp 42839000 LED ...

Страница 31: ...utton to show set temperature 3 Button to decrease temperature 4 Button to increase temperature 6 2 USE OF LEDS SIGNAL MODE FUNCTION ON Compressor enabled FLASHING Anti short cycle delay enabled ON Defrost enabled FLASHING Drip time in progress ON An allarm is occurring F ON Continuous cycle is runnirng ON Energy saving enabled ON Auxiliary relay on ON Measurement unit FLASHING Programming phase A...

Страница 32: ...SERVICE MANUAL TANGO KW short version ENGLISH Autori Serralunga M 16 07 2020 32 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 6 3 TANGO KW PARAMETERS ...

Страница 33: ...appropriate pre established temperature inside the tank This temperature adjuster is gauged by the factory and should not be touched by the user Only if the average internal temperature is too cold or not cold you can increment or decrement the temperature Press the Set 2 sec key in order to see on display the temperature set point Press the key or the key in order to increment or decrement the te...

Страница 34: ...UALITY MANAGEMENT 7 WIRING DIAGRAM 7 1 WIRING DIAGRAM LEGEND REF DEVICE CE ELECTRONIC CONTROL CO COMPRESSOR CS POWER SUPPLY CORD WITH PLUG LDV INNER TANK LAMP LED LPS SWITCHING POWER SUPPLY MC CONDENSER MOTOR FAN MI EVAPORATOR MOTOR FAN MVE CONDENSATE TRAY MOTOR FAN PBD EVAPORATOR PROBE PBT TEMPERATURE PROBE RC REPLAY COMPRESSOR INV INVERTER ...

Страница 35: ...SERVICE MANUAL TANGO KW short version ENGLISH Autori Serralunga M 16 07 2020 35 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 7 2 TANGO 125 KW WIRING DIAGRAM ...

Страница 36: ...SERVICE MANUAL TANGO KW short version ENGLISH Autori Serralunga M 16 07 2020 36 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 7 3 TANGO 188 KW WIRING DIAGRAM ...

Страница 37: ...SERVICE MANUAL TANGO KW short version ENGLISH Autori Serralunga M 16 07 2020 37 NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT 7 4 TANGO 250 KW WIRING DIAGRAM ...

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