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Fisher & Paykel MR810 7ELECTRICAL SAFETY TESTS, 7.1PROTECTIVE EARTH RESISTANCE, 7.2EARTH LEAKAGE CURRENT, 7.3INSULATION RESISTANCE

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7ELECTRICAL SAFETY TESTS

After the MR810 has been serviced, perform the following electrical safety tests as listed below or in accordance with relevant country regulations.

7.1PROTECTIVE EARTH RESISTANCE

Use an ohmmeter and measure the resistance from the earth pin on the mains plug to the heater plate. To ensure good contact with the anodised heater plate an alligator clip is recommended. Connect at the front of the heater plate where the anodising has been removed (see Figure 7.1). The resistance should be ≤ 0.2 Ω.

7.2EARTH LEAKAGE CURRENT

Measure earth leakage with the earth probe of the tester on the heater plate (see Figure 7.1). Earth leakage current is measured at normal mains operating voltage and frequency; it should not exceed 0.5mA maximum.

7.3INSULATION RESISTANCE

Use a 500 VDC insulation resistance tester to measure the resistance from the phase pin on the mains plug to the heater plate (see Figure 7.1). Insulation resistance should be ≥ 10 MΩ.

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Figure 7.1: Location of test point on heater plate

MR810 Technical Manual Revision C REF 185042601

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Contents

Page International United States Australia China Guangzhou Representative Office CONTENTS ELECTRICAL SAFETY TESTS ERFORMANCE EST ROCEDURE APPENDIX A: MAINTENANCE CHECKLIST 1 GENERAL INFORMATION 1.1INTRODUCTION 1.2GLOSSARY OF TERMS 1.3DEFINITIONS 1.4 SYMBOLS 1.5TECHNICAL MANUAL REVISION HISTORY 2SPECIFICATIONS MECHANICAL ELECTRICAL PERFORMANCE Temperature 2.4TRANSPORT AND STORAGE 2.5STANDARDS 3OPERATION AND CONTROLS 3.1 APPLICATION 3.2WARNINGS AND CAUTIONS 3.3SETUP 3.4CONTROLS AND INDICATORS 3.4.3"SEE MANUAL" INDICATOR Hardware Fault Microprocessor Fault 3.4.4 HEATER-WIRE INDICATOR 3.4.5AMBIENT TEMPERATURE SENSOR 3.5OPERATION 3.6DIAGNOSTIC PORT 4MAINTENANCE & CLEANING PROCEDURES 4.1CLEANING 4.2ANNUAL MAINTENANCE Page 5.2SEE MANUAL CODES See Fault Description Section Setting 6SERVICING PROCEDURES 6.1PRECAUTIONS 6.2OPENING THE CASE AND REMOVING THE PCB Figure 6.1: Removing the case bottom 6.2.2 REMOVING THE PCB 6.2.2 R PCB Figure 6.2: Removing the PCB 6.3REPLACING FUSES Model Supply Voltage Fuse Type Part Number 6.4REPLACING THE PCB PCB 6.5SERVICING THE HEATER PLATE Exploded Screw Application Driver Heater Plate Resistance Page Element 6.6REPLACING THE POWER CABLE OR HEATER-WIRE ADAPTOR Supply Power Cable Phase Neutral Page 6.7REPLACING THE PUSH BUTTONS AND THE LED LIGHT PIPE 6.8ASSEMBLING THE PCB AND CASE 6.9COMPLETING THE SERVICE 7ELECTRICAL SAFETY TESTS 7.1PROTECTIVE EARTH RESISTANCE 7.2EARTH LEAKAGE CURRENT 7.3INSULATION RESISTANCE 8PERFORMANCE TEST PROCEDURE 8.1INTRODUCTION 8.2FUNCTIONAL CHECK 8.3HEATER-WIRE MODE PERFORMANCE CHECK 8.4NON HEATER-WIRE MODE PERFORMANCE CHECK Appendix A: MAINTENANCE CHECKLIST Appendix A: M Pass/Fail Visual Check (refer § 4.1) Electrical Safety Check (refer § 7) Performance Check (refer § 8) Appendix B: PRODUCT HISTORY Date Change First Serial # Description of Change Appendix C: D Description (Figure 8.1) C.2 MR810 EXPLODED DIAGRAM C.3 HEATER PLATE PARTS LIST (Figure 8.2) C.4 HEATER PLATE EXPLODED DIAGRAM Appendix D: ELECTROMAGNETIC COMPATIBILITY Appendix D: E D.1 COMPLIANCE AND WARNINGS D.2 ELECTROMAGNETIC EMISSIONS D.3 ELECTROMAGNETIC IMMUNITY Recommended separation distance Recommended separation distances between portable and mobile RF communications equipment and the MR810 Rated maximum output Separation distance according to the frequency of transmitter (m)