REXROTH A4VSG - Page 44

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44/60 Commissioning
Bosch Rexroth AG, RE 92100-01-B/09.2012 Series 10, 11 and 30,
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 RE 90220, RE 90221 and RE 90222. The titles of the data sheet
can be found in Table 1 "Required and supplementary documentation" on page5.
You can find details of permissible and optimal viscosity in data sheet RE 92100.
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 the data sheet RE 92100.
1. Place a drip tray under the axial piston unit to collect any hydraulic fluid that may
escape.
NOTE! Contaminated hydraulic fluid!
The cleanliness levels of hydraulic fluids on delivery do not normally conform to the
requirements for our components.
▶ 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.
NOTE! Damage to equipment due to improper lubrication!
Product can be damaged or destroyed!
▶ When using a shut-off valve in the suction, boost and/or reservoir line, make sure
that the input 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, boost and/or reservoir line, only
operate the axial piston unit when the shut-off valves are open.
4. Test the direction of rotation of the engine. To do this, rotate the engine briefly
at the lowest rotational speed (inching). Make sure that the direction of rotation
of the axial piston unit agrees with the details of the name plate, see chapter5.3
"Product identification", Fig. 3 "Name plate A4VSG" on page20.
5. Operate the axial piston pump at a lower speed (starter speed for internal
combustion engines or inching operation for electric motors) until the hydraulic
system is completely filled and bled. To inspect, drain the hydraulic fluid at the
reservoir port and wait until it drains without bubbles.