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Bosch Rexroth AG
M-...S...SO711/712 | RE 22340-B1/11.12
Safety instructions
CAUTIOn
Contaminated hydraulic fluid!
Contamination in the hydraulic fluid may cause functional failures e.g. jamming
or blocking of nozzles of the directional seat valve. In the worst case, this may
result in unexpected system movements and thus constitute a risk of injury
for persons.
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Ensure adequate hydraulic fluid cleanliness according to the cleanliness
classes of the directional seat valve over the entire operating range.
Hot surfaces!
Directional seat valves may heat up considerably during operation. This may
lead to burns in case of skin contact.
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Avoid contact with the directional seat valve during operation.
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Allow the valve to cool down sufficiently before touching it or wear protec-
tive gloves.
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If necessary, attach protective covers.
Exceedance of the maximum temperatures!
Use of the directional seat valves outside the approved temperature ranges may
lead to functional failures. Due to uncontrolled behavior of the directional seat
valve persons may thus be caught by the system, kicked away or bruised.
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Only use the directional seat valve within the intended environmental and
hydraulic fluid temperature range.
leakage in case of incorrect working temperatures!
Use of the directional seat valves outside the approved temperature ranges may
lead to permanent leakage at the directional seat valves. Thus, hydraulic fluid
in the form of a leaking hydraulic fluid jet may injure persons, lead to damage to
property and endanger the environment.
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Only use the directional seat valve within the intended environmental and
hydraulic fluid temperature range.
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In case of leakage, immediately exchange damaged seal rings or the direc-
tional seat valve.
Corrosion!
If the valve is used in humid environments or water, the directional seat valves
and valve mounting screws may corrode. Thus, the valve mounting screws and
the directional seat valves loose their stability and may become loose and thus
constitute a risk of injury.
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Insert valve mounting screws with adequate corrosion protection and ex-
change the valve mounting screws with serious corrosion damage.
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Provide for adequate corrosion protection and exchange directional seat
valves with serious corrosion damage at an early stage.
Contact with salt water leads to increased corrosion at the directional seat
valve. Thus, valve mounting and plug screws as well as moveable compo-
nents like hand levers may be chemically corroded and damaged.
You should thus take suitable corrosion protection measures.
