EN
Operating Manual – Radial Fan TFV 900
5
Control panel
Switch-on
1. Turn the main switch (9) to position I.
– The control unit is activated.
– The device is ready for operation.
2. Check the fan's direction of rotation!
– To do so,
briefly
press the green Control on button (13) and
immediately afterwards
the red Control off button (12):
the fan must be turning in the direction of the arrow.
Observe the arrows at the housing, only then can proper
fan operation be guaranteed!
– If the fan rotates contrarily to the direction of the arrow,
check the rotary field directly at the power box.
– If the rotational direction is correct, the device can be
switched on.
3. Press the Control on button (13).
– The Operation lamp (10) is illuminated.
– The fan starts up smoothly in star operation and after a little
while switches over to delta. Hence it supplies its
maximum conveying capacity for continuous operation.
Switch-off
1. Press the red Control off button (12).
– The Operation lamp (10) goes out.
– The fan resumes in rundown operation for a few seconds
and then comes to a halt.
From this operating condition you can switch the device back on
at any time.
Shutdown
1. Switch the device off as previously described.
2. Upon standstill of the fan (wait for the end of the rundown
operation!) turn the main switch (9) to position 0.
3. Now first pull the plug from the mains and only after that
disconnect the plug connection directly at the device.
Power box
The following components are located in the power box:
Operation
No.
Designation
9
Main switch
10
Operation lamp
11
Fault lamp
12
Control off button
13
Control on button
9
10
11
12
13
No.
Designation
14
Changeover contactors Q3
15
Main switch Q1
16
Star-delta changeover switch for smooth start-up K1
17
Terminals 1...11
18
Motor protection switch F2 with blue reset button
18
14
17
16
15
