Commissioning 45/68
RE 92105-01-B/06.2017, A4CSG, Series 3x,
Bosch Rexroth AG
Use only a hydraulic fluid that conforms to the following requirements:
You can find details of the minimum requirements on hydraulic fluids in Bosch Rexroth
data sheets 90220, 90221 and 90222. The titles of the data sheets can be found in
Table 1 “Required and supplementary documentation” on page 5. You can find
details on the permissible and optimal viscosity in data sheet 92105.
To ensure the functional reliability of the axial piston unit, cleanliness level 20/18/15
according to at least ISO 4406 is necessary for the hydraulic fluid. For permissible
temperatures, see data sheet 92105.
1.
Place a drip tray under the axial piston unit to collect any hydraulic fluid that may
leak.
nOTICE!
Contaminated hydraulic fluid!
The cleanliness levels of hydraulic fluids on delivery do not normally conform to the
requirements for our components.
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Use a suitable filter system to filter hydraulic fluids during filling to minimize solid
impurities and water in the hydraulic system.
2.
Fill and air bleed the axial piston unit via the appropriate ports, see chapter 7.3
“Installation position” on page 28. The hydraulic lines of the system must also
be filled.
nOTICE!
Risk of property damage due to inadequate lubrication!
Damage or destruction of product possible!
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When using a shut-off valve in the suction and/or drain line, make sure that the
drive of the axial piston unit can only be started when the shut-off valves are
open.
3.
When using a shut-off valve in the suction and/or drain line, only operate the axial
piston unit when the shut-off valves are open.
4.
Test the direction of rotation of the drive motor. To do this, rotate the drive motor
briefly at the lowest rotational speed (inching). Make sure that the direction of
rotation of the axial piston unit conforms to the details on the name plate, see
chapter 5.3 “Product identification”, Fig. 3: Name plate A4CSG on page 21.
5.
Operate the axial piston pump at a lower rotational speed (starter speed for
internal combustion engines or inching operation for electric motors) until the
hydraulic system is completely filled and air bled. For checking purposes, drain
the hydraulic fluid at the drain port and wait until it drains without bubbles.
8.1.2 Testing the hydraulic fluid supply
The axial piston unit must always have a sufficient supply of hydraulic fluid. It is
therefore essential to check the hydraulic fluid supply via the boost pump at the
start of commissioning and to ensure sufficient filling of the closed circuit.
When you test the hydraulic fluid supply, constantly monitor the noise development
and check the hydraulic fluid level in the reservoir. If the axial piston unit becomes
louder (cavitation) or the drain fluid is discharged with bubbles, this is an indication
that the axial piston unit is not being sufficiently supplied with hydraulic fluid.
For information on troubleshooting, see chapter 14 “Troubleshooting” on page 59.
