Technical data

8 Maintenance and Installation
8.1 General Information
control cabinet PCs of the VSB design are maintenance-free. Some compo‐
nents are subject to wear and must be replaced (see chapter 4.5 "Wear
Parts" on page 22).
If the screws were removed due to maintenance, they are now to
be fastened with the respective mounting torques specified in the
following table.
Threads Mounting torques
M2.5 0.4 Nm
M3 0.7 Nm
M4 1.4 Nm
M5 2.8 Nm
Fig.8-1: Mounting torques
Maintenance
Include the following measures in the maintenance schedule:
● At least once a year, all plug and terminal connections of the components
are to be checked regarding proper tightness and possible damage.
Check that cables are not broken or crushed. Damaged parts must be
replaced immediately.
● The fan is to be checked at least once a year.
DANGER
Risk of injury by rotating fan impeller!
The fan impeller is not to be touched with the hands and may not come into
contact with other objects.
● Ensure that the VSB 40.3 is connected to a working uninterruptible power
supply unit (UPS).
Bosch Rexroth provides uninterruptible power supplies for the 24 V
supply as accessory (see chapter 11.2 "Accessories" on page
91).
8.2 CMOS Battery
The battery used for buffering the RAM, BIOS and the clock has a limited serv‐
ice life (see chapter 4.5 "Wear Parts" on page 22).
This lithium battery may not be changed by the user. The battery may only be
exchanged by the Bosch Rexroth Service (see chapter 12 "Service and Sup‐
port" on page 95) or by personnel trained and authorized by the Service.
WARNING
Batteries might cause fire, explosions or chemical burn!
Do not load, remove, destroy, burn or heat batteries over 100 °C.
Dispose old batteries immediately and properly.
Keep away from children.
Project Planning Manual | Rexroth IndraControl VSB 40.3 Electric Drives
and Controls
| Bosch Rexroth AG 47/101
Maintenance and Installation