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Bosch Rexroth AG
Commissioning
CAUTION!
7
Commissioning
Risk of personal injury and damage to property!
Commissioning of the valve requires basic hydraulic, pneumatic and
electrical knowledge.
Only qualified personnel (see section "2.3 Qualification of personnel" on
page 7) are authorized to commission the valve.
7.1
First commissioning; re-commissioning after
extended standstill
Proceed as described in the following sections to commission the valve.
Check the electrical connections (only type ...QM...)
Electrical connections must be checked for proper condition by or under the
guidance and supervision of a specialized electrician before the initial or any
recommissioning.
Bleeding the hydraulic system
Observe the operating instructions of the unit or system in which the valve
is used.
Before the actual operation, switch the valve several times with reduced pres-
sure (50 % operating pressure). This will expel any remaining air from the
valve. Mechanical damage due to inadmissibly high acceleration of the fluid
and the valve spool is thus avoided and the valve's service life is extended.
Do not switch the valve under operating pressure, as this may cause damage.
With valve types
..WPH...
the valve spool necessary for the bleeding process by manual actuation of the
manual override, see section "8.1 Operating the manual override" (only with
valve types ...WPH...)" on page 27.
Performing a leakage test
Check whether during operation, hydraulic medium leaks at the valve and at
the connections.
Check whether there is an internal leakage. This has to be done according to
the possibilities offered by the hydraulic system.
There may be an internal leakage due to the specific valve. This has, howev-
er, no influence on the valve's functionality.
For information regarding this topic, please contact Bosch Rexroth.
W.H; WM.H | RE 24851-B/06.09
you can also achieve the switching movement of
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