10
OPERATION
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SINGLE ACTING CYLINDERS, LOAD RETURN
When pressurizing the advance chamber, the piston starts moving until the pumping stops. When the
cylinder is depressurized, the piston will only return by the effect of an external load.
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SINGLE ACTING CYLINDERS, SPRING RETURN
When pressurizing the advance chamber, the piston starts moving until the pumping stops. When the
cylinder is pressurized, the piston returns by the effect of the spring.
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DOUBLE ACTING CYLINDERS
When pressurizing the advance chamber, the piston starts moving until the pumping stops. The return
chamber must be depressurized to retract the piston.
MAINTENANCE
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Use always LARZEP oil. The use of any other liquid will invalidate the warranty. Use DIN ISO 6743-4: ISO
HM32 for pumps and jacks, and ISO HM46 for powerpacks.
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If the oil is dirty, replace it completely.
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Retract completely the piston after its use.
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Depressurize the system.
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When the hoses are disconnected, fit the dust protectors to the quick couplers.
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Before storing the cylinder, check that there are no damages and clean and protect it for storage. If
there are worn or damaged pieces, replace them with original LARZEP, using appropriate tools and
personal safety equipment. This work must always be done by qualified and authorized personnel.
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Grease the areas exposed to wear or oxidation.
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Before a long-term storage, fully extend and retract the piston once, storing the cylinder upside
down.
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Make an annual visual inspection.
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Every 3 years or when there are doubts of cylinder's safety and reliability, check that the piston extends
and retracts the whole stroke.
NOTE: To order spare parts, it is necessary to provide the serial number of the equipment.