44/60 Commissioning
Bosch Rexroth AG, A15VSO/A15VLO Series 11, RE 92801-01-B/11.2018
Use only ahydraulic fluid that corresponds tothe following requirements:
You can find details oftheminimum requirements onhydraulic fluids
inBoschRexroth datasheets90220, 90221 and 90222. The titles ofthedata sheets
can befound in Table 1 "Required and supplementary documentation" onpage5.
BoschRexroth evaluates hydraulic fluids onthe basis oftheFluid Rating
according todatasheet90235. For hydraulic fluids which have been positively
evaluated inthe Fluid Rating, please refer todatasheet90245 "BoschRexroth
fluid rating list for Rexroth hydraulic components (pumps and motors)". The
hydraulic fluid should beselected sothat the operating viscosity inthe operating
temperature range iswithin the optimum range (ν
opt
; see selection diagram inthe
datasheet92801).
To ensure the functional reliability oftheaxial piston unit, cleanliness level 20/18/15
according toat least ISO4406 isnecessary for the hydraulic fluid. At ahydraulic fluid
viscosity ofless than 10mm²/s (e.g.due tohigh temperatures during short-term
operation) atthedrain port, amin. cleanliness level of19/17/14 asdefined
inISO4406 isrequired. You can find details onthe permissible and optimal
viscosities and admissible temperatures indatasheet92801.
Proceed asfollows tofill the axial piston unit:
1. Place adrip tray under the axial piston unit tocollect any hydraulic fluid that may
leak.
NOTICE! Contaminated hydraulic fluid!
The cleanliness levels ofcommercial hydraulic fluid are usually insufficient for our
components.
▶ Use asuitable filter system tofilter hydraulic fluids during filling tominimize solid
particle contamination and water inthe hydraulic system.
2. Fill and air bleed the axial piston unit via the appropriate ports; seechapter7.3
"Installation position" onpage28. Also fill the hydraulic lines ofthesystem.
NOTICE! Risk ofproperty damage due toinadequate lubrication!
Product can bedamaged ordestroyed!
▶ When using ashut-off valve inthe suction and/or drain line, make sure the drive
oftheaxial piston unit can only bestarted when the shut-off valves are open.
3. When using ashut-off valve inthe suction and/or drain line, only operate the axial
piston unit when the shut-off valves are open.
4. Test the direction ofrotation ofthedrive motor. To do this, run the drive motor
briefly atthelowest rotational speed (inching). Make sure that the direction
ofrotation oftheaxial piston unit agrees with the details ofthename plate,
seechapter5.3 "Product identification", Fig. 4Name plate A15VSO onpage20.
5. Operate the axial piston pump atalow rotational speed (starter speed for
internal combustion engines orinching mode for electric motors) until the
hydraulic system iscompletely filled and air bled. To verify, drain the hydraulic
fluid atthedrain port until there are nobubbles inthe fluid.
Procedure