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Checking electrical
connections
Bleeding the hydraulic
system
Performing a leak test
▶
Check the inside of the terminal box for corrosion. Do not install the valve if you
find any visible corrosion.
▶
Electrical connections in the terminal box must be checked for proper condition
by or under the guidance and supervision of a specialized electrician before the
initial commissioning or any re-commissioning.
▶
Seals are subject to a natural process of aging and, for this reason, are to be
checked for damage every time the terminal box is opened and replaced if
required.
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 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.
▶
You can also achieve the switching movement of the valve control spool
necessary for the bleeding procedure by manual actuation of the manual override,
see chapter 9.2 "Operating the manual override (only relevant for
type .WE6.6X/.NXE...)".
▶
Ensure that no hydraulic fluid leaks at the valve and the connections during
operation.
▶
Check for internal leakage. The check must be carried out according to the
possibilities present at the hydraulic system.
Internal leakage can be valve-specific but does not necessarily affect the
functionality of the valve.
Commissioning
RE23178-XE-B/10.20, WE6..6X/...XE..., Bosch Rexroth AG
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