I.B. 3A74499B Page vEffective 11/975-5 Miscellaneous....................................................................................................................................................235-5.1 Earthing Contact................................................................................................................................................235-5.2 Operations Counter ...........................................................................................................................................235-6 Levering Mechanism .........................................................................................................................................23SECTION 6 INSPECTION AND MAINTENANCE6-1 Warning .............................................................................................................................................................256-2 Frequency .........................................................................................................................................................256-3 Inspection and Maintenance Procedures ..........................................................................................................266-4 Vacuum Interrupter Integrity Test..................................................................................................................... 276-5 Contact Erosion and Wipe.................................................................................................................................276-6 Insulation ...........................................................................................................................................................286-7 Insulation Integrity Check ..................................................................................................................................286-8 Primary Circuit Resistance Check.....................................................................................................................296-9 Mechanism Check.............................................................................................................................................296-10 Lubrication.........................................................................................................................................................296-11 Troubleshooting Chart.......................................................................................................................................31SECTION 7 RENEWAL PARTS7-1 General .............................................................................................................................................................347-2 Ordering Instructions .........................................................................................................................................34