62/78 Commissioning
Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15
8 Commissioning
CAUTION
Commissioning an improperly installed product!
Mixing up the ports or cable connectors will cause unexpected functions and/or
irreparable damage to the control block/control block segment and can cause
a risk for personnel and equipment!
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Make sure that all the electrical connections and hydraulic ports are connected
or plugged correctly.
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Make sure that the cable connectors are correctly assigned to the respective
electrical components.
Risk of injury due to jammed spool!
The temperature difference between the control block/control block segment
and the hydraulic fluid must not exceed 20 °C. Otherwise, there is a risk of
a jammed spool.
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Avoid temperature shocks.
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Adjust the temperatures as necessary.
NOTICE
Risk of damage due to entrapped air!
Air bubbles in the housing can considerably compromise the damping function
of the directional valve components required for stable function. This means
that vibration may occur at moving components (e.g. control spools or pressure
compensators) causing heavy impacts at the mechanical limit stops due to high
vibration amplitudes.
In this respect, damage or even destruction of components is to be expected.
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Before commissioning, it must be ensured that any air entrapped in the control
block/control block segment is completely removed. This may be realized by
application of a low hydraulic fluid flow of
q
≤ 20 l/min in all spool positions.
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Always observe the instructions for air in the instruction manual of the machine.
8.1 Before initial commissioning
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Make sure that the tie rod screws of the control block are tightened with the
required tightening torque.
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The control block/control block segments must be installed in the vehicle in
compliance with the vehicle specifications. Make sure that the mounting screws
are tightened with the required tightening torque.
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Any electrical connections at the control block/control block segment must be
established according to the electrical circuit diagram of the vehicle.
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The hydraulic connection fittings must be tightened with the specified
tightening torque.
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The control block/control block segments must be filled with hydraulic fluid to
the maximum level.
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Supply and control connections must be established according to the fluid plan
of the vehicle.