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Bosch Rexroth AG
M-...S...SO711/712 | RE 22340-B1/11.12
Operation
remaining air from the directional seat valve. Mechanical damage due to
inadmissibly high acceleration of the hydraulic fluid and the valve spool is thus
avoided and the directional seat valve's life cycle is increased.
Do not switch the directional seat valve under operating pressure during
bleeding as this may cause damage.
9 Operation
See operating instructions of the hydraulic system into which the directional
seat valve has been installed.
CAUTIOn
Danger of hearing damage!
In case of an unfavorable arrangement of directional seat valves, resonance or
fluid noises e.g. whistling may result. In continuous operation, these noises may
cause hearing damage in persons or damage at the directional seat valves.
f
In this case, contact a service engineer.
If faults occur, refer to chapter 14 "Troubleshooting".
10 Maintenance and repair
The following inspection, testing and maintenance works are to be carried out reg-
ularly. The intervals for the same have to be selected in a way - also depending
on the operating conditions - that deficiencies that have to be anticipated are iden-
tified timely. The check must, however, at least be carried out every
three years
from the date of manufacture of the valve. The date of manufacture of the valve
can be found on the name plate, see 5.4 "Product identification".
The check is also to be carried out if the valve is only stored, however not used!
f
Regularly check the product and connection surfaces for leak-tightness!
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As a precaution, exchange seals at reasonable time intervals.
Preventative maintenance (e.g. hydraulic fluid care) as well as compliance
with the pressure and temperature specifications extend the life cycle of the
system and/or the directional seat valve.
