Bosch Rexroth WMM6 Series, Руководство по эксплуатации

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Commissioning 27/40
RE22280-XC-B/09.19, WMM6..5X/...XC... Bosch Rexroth AG
8 Commissioning
WARNING
Faulty assembly!
If the valve is not correctly mounted, persons might be injured and the valve
or system could be damaged when commissioning the valve.
▶ Only commission your system after all hydraulic connections and the valve have
been completely and properly mounted according to the specifications.
▶ Look out for defective sealing points and exchange defective seal rings
immediately.
▶ Wear personal protective equipment during the initial commissioning.
Inadmissibly high operating pressure!
In hydraulic applications with different area ratios, the hydraulic pressure is
fortified and may - in case of incorrect design - lead to exceedance of the maximum
admissible operating pressure. Thus, valves may burst, or the cap elements may be
ejected and cause personal injury.
▶ Before commissioning the hydraulic system, ensure that the maximum
admissible pressure of the valve in the system is not exceeded by any means.
▶ Ensure that in your system, the maximum admissible operating pressure is
secured by means of a pressure relief valve.
Damage to persons and property!
Commissioning of the valve requires basic hydraulic and electrical knowledge.
▶ Only qualified personnel (see chapter 2.4 "Qualification of personnel") is
authorized to commission the valve.
Proceed as described in the following sections to commission the valve:
Observe the operating instructions of the device and/or system into which the
valve is installed.
▶ Before the actual operation, switch the valve several times with reduced pressure
(50% operating pressure). This will press out any remaining air from the valve.
Thus, mechanical damage being caused by inadmissibly high acceleration of
the fluid and the valve control spool is avoided and the life cycle of the valve is
extended.
Do not switch the valve under operating pressure as this may cause damage .
▶ Ensure that no hydraulic fluid leaks at the valve and the connections during
operation.
▶ Check whether there is an internal leakage. The check must be carried out
according to the possibilities present at the hydraulic system.
An internal leakage can be valve-specific but does not necessarily affect the
functionality of the valve.
Bleeding the
hydraulic system
Performing a leak test