Operation
Hydraulic system
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6.21 Hydraulic system
WARNING
The hydraulic system is under high pressure.
Hot hydraulic fluid may emit from leaks and cause severe injuries! The prestress of the
pressure reservoirs is present even when the remaining hydraulic system is already
pressureless. When dirt, even only in the smallest quantities, enters the hydraulic sys-
tem, this may lead to serious damage to the complete hydraulic system.
– Work on pressure reservoirs of the machine may only be performed by trained per-
sonnel.
– When working on the pressure reservoirs, the machine must first be rendered com-
pletely pressureless.
– The pressure reservoirs themselves may in no case be damaged or opened,
because substantial injuries to people can occur due to the constant prestress.
– During all work on the hydraulic system, ensure extreme cleanliness.
(1) Hydraulic oil temperature
(2) Hydraulic oil level
Regularly check the hoses of the hydraulic system for aging and damage! Immediately
exchange damaged or aged hoses. Use only original ROPA hoses or hoses fully con-
forming to the technical specifications of the original hoses! Observe the regionally
applying safety regulations on the service life of hydraulic hoses.
The hydraulic system is operational after the diesel engine has been started. To spare
the hydraulic system, the engine rotational speed during the first minutes (about
5 min.) after a cold start should in no case exceed the value of 1000 rpm. Even higher
rotational speeds for short times should be avoided. As long as the hydraulic fluid has
not reached normal operating temperature (longer times of standstill, low outside tem-
perature), proceed as follows:
Let the engine warm up at 1000 rpm for about five minutes, until the hydraulic fluid has
reached a temperature of about 20° C. The temperature of the hydraulic fluid may be
read at the R-Touch at any time.
If the temperature of the hydraulic fluid is 70° C or higher, or when the icon is dis-
played on the R-Touch, immediately clean the hydraulic oil cooler.
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