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Maintenance and repair
Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20
10 Maintenance and repair
10.1 Cleaning and care
Solvents and aggressive cleaning agents!
Aggressive cleaning agents may damage the seals of the safety valve and accelerate
its aging.
Do not use solvents or aggressive cleaning agents.
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Damage to the hydraulic system and seals!
The water pressure of a high-pressure washer may damage the hydraulic system
and the seals of the safety valve.
Do not use a high-pressure washer for cleaning.
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For cleaning and care of the safety valve (in the installed condition), observe the
following:
Remove external coarse dirt and keep sensitive and important parts clean.
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Only clean the safety valve using a non-linting cloth.
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10.2 Inspection and maintenance
Dirt and foreign particles in the safety valve!
Penetrating dirt and foreign particles in the safety valve lead to wear and
malfunctions. Safe function of the safety valve is therefore no longer ensured.
During all works, provide for absolute cleanliness in order to prevent foreign
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particles like e.g. welding beads or metal chips from getting into the hydraulic
lines, the valve installation bore and into the safety valve.
Do not use linting fabric for cleaning.
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Ensure that no cleaning agents are able to penetrate the hydraulic system.
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Flush the hydraulic system if necessary. Replace the fluid filter or the hydraulic
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fluid.
10.2.1
General maintenance instructions
1.
Remove coarse dirt from the exterior.
2.
Check all external fittings for completeness and tight seat.
3.
Check the safety valve for external leakage, replace the seals if necessary,
see chapter 10.3 "Repair".
4.
Check the connection surface of the safety valve for the formation of corrosion.
In the ongoing operation, corrosion may cause leakage. Remove the safety valve
and have the contact surface concerned repaired if there is any visible corrosion.
NOTICE
NOTICE
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