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11 OptionMarathon valve option (for abrasive materials) METRO 06-1 to 30-111.4 Marathon valve option (for abrasive materials)The Marathon valve prevents wear in hopper <strong>loader</strong>s on components that come into contact with thegranulate during conveying.11.4.1 Intervals for inspections, maintenance and cleaning workMonthlyComponent Activity Target value/Meaning QualificationMarathon valvefor wear, cracking anddestructionSee "Maintenance work" onPage 60OperatorPipe to Marathon valve for wear See "Maintenance work" onPage 60Operator11.4.2 Maintenance workMaterial damage!Parts which fall into the unit may cause operational faults.CAUTION! Make sure that no parts fall into the unit. Cover the opening of the machine and bin.Fig. 11.7 – Marathon valve[1] Marathon valve[2] Pipe to Marathon valve Prepare the hopper <strong>loader</strong> for maintenance (see "Before starting work" on Page 32). Check the Marathon valve [1] for wear, cracking and destruction. Check the pipe to the Marathon valve [2] for wear.60 Edition: February 2006
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