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0 hours: New Sperre compressor in top condition: Buys the following original parts at the same time: Complete valves, valve parts, valve gaskets, piston rings, all bearings, complete set of gaskets, flexible coupling insert. "I prefer to have a good stock of guaranteed genuine spares on board. A ship at sea is no place to take chances."
200 hours: Running- in oil changed. Uses oil recommended by Sperre.
1000 hours: Routine maintenance. Checks valves. These are still in very good condition. Changes valve gaskets and orders new ones from Sperre. Changes oil.
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2000 hours: Checks valves. Changes springs and plates in HP valve (to be on the safe side). Changes valve gaskets. Orders new parts from Sperre. Changes oil.
3000 hours: Checks valves. Changes springs and plates in LP valve (to be on the safe side). Cleans HP valve. Changes all valve gaskets. Changes flexible coupling insert. Changes oil. Orders new parts from Sperre. This compressor is no trouble...
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3600 hours: No maintenance.
4000 hours: Routine maintenance. Changes HP valve (to be on the safe side). Cleans LP valve. Changes valve gaskets. Orders new parts from Sperre. Changes oil. Great compressor - no problems at all, and amazingly low running costs!
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