Bosch rexroth 12 Series - Page 44

BoschRexrothAG, RE 92802-01-B/2023-03-27
44/60 A15VSO/A15VLO series 12 | Commissioning
You can nd details of the minimum requirements on hydraulic uids 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.
BoschRexroth evaluates hydraulic uids on the basis of the Fluid Rating
according to datasheet90235. For hydraulic uids which have been positively
evaluated in the Fluid Rating, please refer to data sheet 90245 "BoschRexroth
uid rating list for Rexroth hydraulic components (pumps and motors)".
Selection of hydraulic uid shall make sure that the operating viscosity in the
operating temperature range is within the optimum range (ν
opt
; see selection
diagram in the data sheet 92802).
To ensure the functional reliability of the axial piston unit, cleanliness level
20/18/15 according to at least ISO 4406 is required for the hydraulic uid.
At ahydraulic uid viscosity of less than 10 mm²/s (e.g.due to high temperatures
during short-term operation) at the drain port, acleanliness level of at
least 19/17/14 according to ISO4406 is required. You can nd parameters
on the permissible and optimal viscosities and admissible temperatures in
datasheet 92802�
Proceed as follows to ll the axial piston unit:
1� Place adrip tray under the axial piston unit to collect any hydraulic uid that
may leak.
NOTICE! Contaminated hydraulic uid!
The cleanliness levels of commercial hydraulic uids are usually insufcient for the
requirements of our components.
▶ Use asuitable lter system to lter hydraulic uids during lling to minimize
solid particle contamination 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. Also ll the hydraulic lines of the system.
NOTICE! Risk of property damage due to inadequate lubrication!
Product can be damaged or destroyed!
▶ When using ashut-off valve in the suction line, make sure that the drive of the
axial piston unit can only be started when the shut-off valves are open.
▶ Dimension ashut-off valve in the suction line so that no inadmissible pressure
drop occurs in the suction area when the shut-off valve is open.
3� If you use ashut-off valve in the suction line, only operate the axial piston unit
with opened shut-off valves.
4� Test the direction of rotation of the drive motor. To do this, run the drive motor
briey 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 identication", Fig. 4: Name plate A15VSO on page 21.
Procedure