Siemens NXAIR Installation Instructions Manual page 112

Assembling the panels
Fasten the front cover using 2 bolt-and-washer-assemblies M8x25 and the associated plain washers.
Fig. 147: Installing the front cover
Testing the fan
Switch off the 3RV circuit-breakers -F03, -F101, -1F101 and -2F101 in the low-voltage compartment
in order to interrupt the voltage supply of the fan.
Apply correct auxiliary voltage to the fan externally through these detached connection cables and
verify the following functions.
Fan start-up
Wind vane
Let the fan rotate for 5 minutes and observe it.
In case of faults like unusual noises, interrupt the external voltage supply immediately and eliminate
the reason for the fault. Then repeat the test.
After 5 minutes of trouble-free rotation, interrupt the external voltage supply of the fan.
Reconnect the connection cables to the wind vane and the fan in the low-voltage compartment.
✓
The fan installation and fan test is completed.
112
Test item
Trouble-free fan operation, only
streaming noises are heard
Continuity test
Terminals for:
Fan 1: -XH1: 510 (L), -XH1: 511 (N)
Fan 2: -XH1: 520 (L), -XH1: 521 (N)
in the low-voltage compartment
Fan stands still: Continuity
Fan rotates: Interruption
NXAIR /
Remedy action
Establish free
rotation of the fan
blades
Interrupt external
voltage supply
immediately, check
the wind vane in the
fan box
≤
40 kA 110-0084.9 / 15