Bosch Rexroth 4WRPD - Page 13

Safety instructions 13/48
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
WARNING
Penetrating water and humidity!
In case of use in humid or wet environments, water or humidity may penetrate
at electrical plug-in connectors or the valve electronics. This case may lead to
malfunctions at the valve and to unexpected movements in the hydraulic system
which may result in personal injury and damage to property.
 Do not use the valve on Multi-Ethernet basis outside or below its intended IP
protection class.
 Ensure before the installation that all seals and caps of the plug-in
connections are present and intact.
Easily inflammable hydraulic fluid!
In connection with fire or other hot heat sources, leaking hydraulic fluid
mist, which results from defective or incompletely mounted valves and their
connections, may lead to fire or explosions.
 Do not use the valve in areas with open fire and only at a sufficient distance to
hot heat sources.
CAUTION
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.
 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. This may cause burns when
you touch the surfaces or, when the surface gets into contact with non-heat-
resistant or combustible material, this may result in damage to property or fire.
 Avoid contact with the valve during operation.
 Allow the valve to cool down sufficiently before touching it or wear protective
gloves.
 Keep non-heat-resistant or combustible material away from hydraulic valves.
 If necessary, attach protective covers.
Exceedance of the maximum temperatures!
Use of the valve outside the intended temperature may lead to functional failures
like e.g. due to overheating of the valve solenoids. In the worst case, this may
result in unexpected system movements and thus constitute a risk of injury.
 Only use the safety valve within the intended ambient and fluid temperatures.