Replacing The Filter Mat - Siemens S5-155U System Manual

Replacing the filter mat

Inadequate air flow
How to replace the filter mat
System Manual
C79000-B8576-C199-03
If the filter mat is clogged and the power supply unit no longer
receives sufficient air, the "Alarm" LED lights up, LEDs for "Fan 1",
"Fan 2" and "Fan 3" flash and the "Alarm" relay picks up. The fault
can be cleared by replacing the filter mat (see ordering information for
the order number).
Clear the fault in the following steps:
Step Action
1 Release the filter subdrawer.
2 Swivel the filter subdrawer downwards and pull it
forward and out.
3 Remove the old filter mat.
4 Remove residue of the old filter mat from the gripper
material.
5 Insert a new filter mat in the filter subdrawer and secure it
with the gripper material.
6 Insert the filter subdrawer in the guide rails, slide it back
and swivel it up so that it engages.
7 Press the Reset button.
Result: - Fault LEDs for "Alarm", "Fan 1", "Fan 2" and
"Fan 3" go off.
- Contacts 11 and 12 are closed in the "Alarm"
relay.
Power Supply Units
4 - 49
4