7.7.4 Fan
General
There may be cases when the fan unit must be dismounted for maintenance
measures or troubleshooting.
● This work may only be carried out by skilled personnel.
● When dismounting the fan unit, keep all strips, screws and nuts with
which it is attached.
In parts, the housings of the fan units consist of several screwed elements.
Only unscrew the screws that are marked as such.
Immediately after the energy storage device
has been operated, high temperatures must
be expected on the fan housing! Risk of
burns!
● Ensure adequate contact protection and wait until the energy storage
device has cooled down.
● Ensure that there are no combustible and flammable materials in the en‐
vironment of the hot fan.
Risk of injuries! While voltage is applied, the
energy storage device restarts automatically,
e.g. after a power failure.
● Do not stay within the danger zone of the device.
● When working on the device, switch off the line voltage and ensure that
it cannot be reactivated.
● Wait until the device has come to a standstill.
General fan maintenance steps:
1. Switch off the machine and disconnect the electrical fan connection.
2. Before unscrewing mounting screws, secure the fan unit such that it
cannot drop and carefully remove the fan unit from the energy storage
device.
3. Reattach the fan unit after having cleaned or visually inspected the mo‐
tor or after troubleshooting (see guidelines below). Protect all mounting
screws with LOCTITE 243 (screwlock) and reestablish all connections.
When attaching the power supply connector, particularly ensure the fol‐
lowing:
There is a seal between the connector and the plug on the fan. Ensure
that the cable cannot put the plug under tensile load in order to avoid
inadequate tightness of this plug connection. If necessary, attach the
connecting cable in flush direction with the plug and provide strain relief
at a close distance.
4. Check the fan and the air circulation for proper functioning.
5. Record all maintenance measures in the machine maintenance plan.
34/49
Commissioning and operation of BA1N energy storage device
BA1N Kinetic Energy Buffer
Bosch Rexroth AG R911393267_Edition 01
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