SERVICE MANUAL VALZER KW (short version) inglese
Autori: Serralunga M. 14/10/2021
2
NO COPYING IN ANY FORM WITHOUT WRITTEN PERMISSION FROM EPTA QUALITY MANAGEMENT
TABLE OF CONTENTS
1. AMOUNT OF REFRIGERANT IN THE EQUIPMENT 3
2. REFRIGERATION SCHEMATICS FOR THE EQUIPMENT 4
2.1. REFRIGERATION DIAGRAM VALZER KW 2D 4
2.2. REFRIGERATION DIAGRAM VALZER KW 3D 5
2.3. REFRIGERATION DIAGRAM VALZER KW 4D 7
2.4. REFRIGERATION DIAGRAM FOR DEFROST CYRCLE VALZER KW 2D 9
2.5. REFRIGERATION DIAGRAM FOR DEFROST CYRCLE VALZER KW 3D 10
2.6. REFRIGERATION DIAGRAM FOR DEFROST CYRCLE VALZER KW 4D 12
2.7. VIEW OF MOTOR COMPARTMENT – VALZER KW 2D 14
2.8. VIEW OF MOTOR COMPARTMENT – VALZER KW 3D 16
2.9. VIEW OF MOTOR COMPARTMENT – VALZER KW 4D 18
2.10. VIEW OF THE EVAPORATOR COMPARTMENT – VALZER KW 2D 19
2.11. VIEW OF THE EVAPORATOR COMPARTMENT – VALZER KW 3D 19
2.12. VIEW OF THE EVAPORATOR COMPARTMENT – VALZER KW 4D 20
3. POSITION OF PROBE IN THE CABINET 21
4. ALARMS FOR MULTIFREEZ PLUS (Dixell Controller) 22
5. REPLACEMENT OF COMPONENTS 22
5.1. SAFE OPERATING PROCEDURES FOR REFRIGERAION UNIT USING R290 22
5.2. PROTECTION TOOLS AND DEVICES FOR SERVICEMENT 23
5.3. HOW TO EMPTY THE COOLING CIRCUIT AND PROVE IT BEFORE SERVICING 26
5.4. COMPRESSOR REPLACEMENT 27
5.5. UNSOLDER COPPER PIPE TUBE 28
5.6. COMPRESSOR REMOVING 28
5.7. NEW COMPRESSOR INSERTION 29
5.8. HIGH PRESSURE PIPE CLOSING 29
5.9. REFRIGERANT GAS CHARGING AND THERMODYNAMIC CIRCUIT CLOSING 31
5.10. CHECK THE CORRECT CLOSING OF THERMODYNAMIC CIRCUIT 34
5.11. REPLACEMENT OF CONDENSER MOTOR FAN 36
5.12. REPLACEMENT OF EVAPORATOR MOTOR FAN 37
5.13. REPLACEMENT OF CONTROLLER SOLENOID VAVE 39
5.14. REPLACEMENT OF ELECTRONIC CONTROLLER 40
5.15. REPLACEMENT OF LED BAR 41
5.16.DOORREPLACEMENT 42
6.INVERTERINFORMATION 46
6.1. LED INDICATION 46
6.2. INVERTER TROUBLESHOOTING 46
7.MAINCABINETFUNCTIONS 47
7.1. DISPLAY UNIT AND MAIN PARAMETERS 47
7.2.USEOFLEDS 47
7.3. TEMPERATURE SETTING 48
7.4. VALZER KW 2D ELECTRONIC CONTROLLER PARAMETERS 49
7.5. VALZER KW 3D ELECTRONIC CONTROLLER PARAMETERS 50
7.6. VALZER KW 4D ELECTRONIC CONTROLLER PARAMETERS 51
8.WIRINGDIAGRAM 52
8.1. VALZER KW 2D WIRING DIAGRAM 52
8.2. VALZER KW 3D WIRING DIAGRAM 53
8.3. VALZER KW 4D WIRING DIAGRAM 54
8.4. WIRING DIAGRAM LEGEND 55
