Assessments - 4, GPA: 4 ( )

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between the switch contacts and of a type suitable for the required load in compliance with the current electric regulations. The switch must not break the yellow and green earth cable at any point. Ensure that the hob supply cord does not come into contact with surfaces with temperatures higher than 50 deg. C. Replacement of the cable The connection of the voltage cable to the appliance's terminal block is of type "Y". This means that its replacement requires the specific equipment of a technician. In this case, only cable type H05RR-F must be used. The cable section must be suitable to the voltage and the working temperature. The yellow/green earth wire must be approximately 2 cm. longer than the phase wires. Wiring diagram N 0 220 240 1 2 3 4 1 2 1. TAPS IGNITOR SWITCHES 2. IGNITOR UNIT Fault Finding Preliminary Electrical Systems Check START Isolate appliance and carry out: A: Earth Continuity check. Has inlet fuse blown? Carry out: C: Polarity check. Electricity supply should now be satisfactory. Carry out: D: Resistance to Earth check. Inlet wiring faulty. Rectify any fault. Isolate appliance and carry out: B: Insulation check. Rectify any fault including replacing fuses as necessary. NO YES SOCKET (face view) PLUG (with cover removed) Earth Wire Green/Yellow Neutral Wire Blue ( ) FUSE ( )E N L Brown Blue Green Yellow Green Yellow Brown Blue NO YES Fault Finding Preliminary Electrical Systems Check START Isolate appliance and carry out: A: Earth Continuity check. Has inlet fuse blown? Carry out: C: Polarity check. Electricity supply should now be satisfactory. Carry out: D: Resistance to Earth check. Inlet wiring faulty. Rectify any fault. Isolate appliance and carry out: B: Insulation check. Rectify any fault including replacing fuses as necessary. NO YES SOCKET (face view) PLUG (with cover removed) Earth Wire Green/Yellow Neutral Wire Blue ( ) FUSE ( )E N L Brown Blue Green Yellow Green Yellow Brown Blue NO YES A. EARTH CONTINUITY CHECK Appliance must be electrically disconnected - meter set on W (Ohms) x 1 scale and adjust zero if necessary. — Test leads from any appliance earth point to earth pin on plug. Resistance should be less than 0.1 W (Ohm), check all earth wires for continuity and all contacts are clean and tight. B. INSULATION CHECK Appliance electrically disconnected, all switches ON. a) meter set on W (Ohms) x 1 scale. Test leads from L to N in appliance terminal block. If meter reads «0» then there is a short circuit. b) meter set on W (Ohm) x 100 scale. Repeat test with leads from L to E. If meter reads less than . (infinity) there is a fault. NOTE - Should it be found that the fuse has failed but no fault is indicated a detailed continuity check (i.e. by disconnecting and checking each component) is required to trace the faulty component. It is possible that a fault could occur as a result of local burning/arcing but no fault could be found under test. However a detailed visual inspection should reveal evidence of burning ...

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