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Commissioning
Problems during
commissioning
Required material
Information on flushing
fluid
Bosch Rexroth AG, CytroPac, RE 51055-B/06.17
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Observe the fluid level in the oil tank and top up, if necessary.
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Monitor the operating temperature development if the machine is fully in
operation for several hours.
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Check the hydraulic power unit for external leakage and correct as necessary.
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Check the connection points for leakage after several operating hours.
To support systematic inspection for and reduction of errors, refer to the matrix
provided in table 11 "Impact of defects, potential causes and remedies" in
chapter 15 "Troubleshooting".
8.1.6 Flushing the hydraulic system
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Flush the hydraulic system to achieve a defined cleanliness of the hydraulic
fluid. This prevents faults and simultaneously increases the life cycle of the
components.
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Make sure that the minimum requirements of the cleanliness class for the
components are fulfilled after installation of the hydraulic power unit into the
machine and after integration into the hydraulic system.
Hydraulic systems in general industrial applications require a cleanliness class of
20/18/15 according to ISO 4406. Hydraulic systems with servo valve or
sophisticated high-response valves have even stricter requirements regarding the
cleanliness class, e.g. 19/16/13.
Observe the cleanliness requirement of the components according to the
manufacturer data sheets for definition of the targeted condition after flushing.
Preparations:
• Provision replacement or flushing filter elements
• If required: Provision of additional pipeline and hose material for flushing and
short-circuit links
• Provision of flushing plates, alternative directional valves
• As applicable: Provision of flushing fluid (see information below)
The same medium can be used as in later operation of the hydraulic system. If a
different hydraulic fluid is used, it must be compatible with the operating medium
intended for the hydraulic system and with materials and particularly the seals used
in the hydraulic system. A maximum admissible residual amount (e.g. 0.5 percent by
volume) of flushing fluid in the operating medium can be defined (see manufacturer's
specifications). In this case, it must be ensured by thorough draining of the flushing
fluid prior to filling with operating medium.
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