Bosch Rexroth 4WRPEH6 3X Operating Instructions Manual page 14

14/44 Safety instructions
Bosch Rexroth AG, 4WRPEH6_3X, 4WRPEH10_3X, 4WRPE6_3X, 4WRPE10_3X, 4WRLE_4X; RE 29118-B/09.2021
Contaminated hydraulic fluid!
Contamination in the hydraulic fluid may cause functional failures e.g. jamming or
blocking of nozzles of the valve. In the worst case, this may result in unexpected
system movements and thus constitute a risk of injury for persons.
▶ Ensure adequate hydraulic fluid cleanliness according to the cleanliness classes
of the valve over the entire operating range.
Hot surfaces!
Valves may heat up considerably during operation. Skin contact can lead to burns
and contact with materials that are flammable or not heat-resistant can lead to
damage to property or fire hazard.
▶ Avoid contact with the valve during operation.
▶ Allow the valve to cool down sufficiently before touching it or wear
protective gloves.
▶ Keep materials that are flammable or not heat-resistant away from
hydraulic valves.
▶ If necessary, attach protective covers.
Exceeding of maximum temperatures!
Use of the valve outside the intended temperature may lead to functional failures
like e.g. overheating of the valve solenoids. In the worst case, this may result in
unexpected system movements and thus constitute a risk of injury for persons.
▶ Only use the safety valve within the intended ambient and fluid temperatures.
Leakage in case of incorrect working temperatures!
Use of the valve outside the intended temperature range may lead to permanent
leakage at the valve. Thus, hydraulic fluid in the form of a leaking hydraulic fluid jet
may injure persons, lead to damage to property and endanger the environment.
▶ Only use the safety valve within the intended ambient and fluid temperatures.
▶ In case of leakage, immediately exchange damaged seal rings or the valve.
Corrosion!
If the valve is used in humid environments or water, the valve and mounting screws
may corrode. Thus, the mounting screws and the valves lose their stability and may
become loose and thus constitute a risk of injury.
▶ Use mounting screws with adequate corrosion protection and exchange the
mounting screws with serious corrosion damage.
▶ Provide for adequate corrosion protection and exchange valves with serious
corrosion damage at an early stage.
CAUTION