NUVE OT 020, Service Manual, Page: 2 / 31

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CONTENTS
SECTION 1 INTRODUCTION
1.1. Purpose of the Service Manual 2
1.2. General Purpose 3
SECTION 2 OPERATING PRINCIPLES
2.1. General Overview 4
2.2. Explanations of Functions 4
2.2.1. Power Supply Values 4
2.2.2. Main PCB 4
2.2.3. Clontrol Panel
2.2.4. Water and Steam Unit
5
7
SECTION 3 SERVICING
3.1. General Overview 8
3.2. General Failure 9
3.3. Temperature Control Failure
SECTION 4 CALIBRATION PROCEDURE
4.1. How to Measure the Actual Temperature
4.2. Calibration
4.2.1. OT 020
4.2.2. OT 020 V
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SECTION 5 SPARE PART REPLACING
4.1. Access to Command and Control 14
4.2. Replacing Main PCB 14
4.3. Replacing Display PCB 14
4.4. Replacing Temperature Sensor 14
4.5. Replacing Condense Selonoid Valve 14
4.6. Replacing Water Filling Solenoid Valve 15
4.7. Replacing Steam Discharge Solenoid Valve 15
4.8. Replacing Vacuum Line Solenoid Valve 15
4.9. Replacing Check Valve 15
4.10. Replacing Vacuum Pump 15
4.11. Replacing Water Pump
4.12. Replacing Safety Valve
4.13. Replacing Water Level Sensor
4.14. Replacing Heater
4.15. Replacing Plastic Panel
4.16. Replacing Locking Bobbin
4.17. Replacing Locking Switch
4.18. Cleaning the Sterilizator Chamber Filter
4.19. Replacing Pressure Switch 16
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SECTION 6 DRAWINGS AND DIAGRAMS
6.1. Electric Circuit Diagram (OT 020)
6.2. Electrical Circuit Diagram (OT 020V) 19
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6.3. Water and Steam Unit Diagrams
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SECTION 7 SPARE PART LIST
Spare Parts List 29