Commissioning - Bosch Rexroth M-2SMM6 SO711 Series Operating Instructions Manual

RE 22340-B1/11.12 | M-...S...SO711/712
8

Commissioning

Incorrect assembly, leaking hydraulic fluid!
Carelessly or incorrectly fastened directional seat valves may become loose dur-
ing operation and fall down and cause serious injuries. A powerful fluid jet may
leak at incompletely mounted hydraulic connections and connection lines and
cause injuries.
Only commission your system after all hydraulic connections of the direc-
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tional seat valve have been completely and properly mounted according to
the specifications.
Look out for defective sealing points and exchange defective seal
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rings immediately.
Inadmissibly high operating pressure!
In hydraulic applications with different area ratio, the hydraulic pressure is forti-
fied and may - in case of incorrect design - lead to exceedance of the maximum
admissible operating pressure. Thus, directional seat valves may burst or the
closing elements may fly around and cause serious injuries.
Ensure before the commissioning of the hydraulic system that the maximum
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admissible pressure of the directional seat valve in the system is not exceed-
ed by no means.
Ensure that in your system, the maximum admissible operating pressure is
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secured by means of a pressure relief element.
Excessive pressure!
Incorrectly set pressure relief valves or valves not unloaded to the tank may lead
to exceedance of the maximum admissible operating pressure.
Thus, the directional seat valves may burst or the closing elements may fly
around and cause personal injuries and/or damage to property.
Before commissioning the hydraulic system, ensure correct setting and safe
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unloading of the these pressure relief
Make sure that all hydraulic connections are covered.
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Commission the directional seat valve only if it is completely installed.
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If hydraulic fluid still leaks after proper assembly:
Immediately depressurize the system and continue with chapter 14 "Troubleshooting".
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Information on the hydraulic fluid
• The released hydraulic fluids and limitations of operation for your directional
seat valve are contained in section 5.3.4 "Technical data".
Bleeding the hydraulic system
Bleeding of the directional seat valve is usually not necessary. However Bosch
Rexroth recommends bleeding the entire hydraulic system; while doing so, the
following points are to be observed:
Before the actual operation, switch the directional seat valve several times
f
with reduced pressure (50 % operating pressure). This will press out any
Bosch Rexroth AG
wARnInG
valves.
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Commissioning