Bosch Rexroth A4VG 35 Series - Page 31

Installation 31/64
RE92035-01-B/2019-11-25, A4VG Series35, Bosch Rexroth AG
▶ To keep noise values low, use elastic elements to isolate all connecting lines from
all vibration-capable components (e.g.reservoir).
▶ Make sure the suction, drain, and return lines flow into the reservoir below the
minimum fluid level under all operating conditions. This will prevent air from
being drawn in and foam from forming.
▶ For the reservoir design, ensure that there is an adequate distance between the
suction line and the drain line. This prevents the heated return flow from being
drawn directly back into the suction line.
▶ Make sure that a minimum suction pressure of 0.8bar absolute is present at
portS (0.5bar abs. for cold start) during operation in all installation positions
and installation locations for the axial piston pump, see Fig. 8. See datasheetfor
other pressure values.
-0.2
0.8 abs.
1
2
3
0
0
1
2
-1
21
S
Fig. 8: Suction pressure
1 Absolute pressure gauge
2 Standard pressure gauge (relative)
The suction conditions improve with below-reservoir installation
▶ Make sure that the working environment at the installation site is completely
free of dust and foreign substances. The axial piston unit should be clean when
installed. Contamination of the hydraulic fluid can considerably affect the function
and service life of the axial piston unit.
▶ Use fiber-free cleaning cloths for cleaning.
▶ Use suitable, mild cleaning agents to remove lubricants and other heavy
contamination. Do not allow cleaning agents to enter into the hydraulic system.