To be checked
See chapter Confirmed?
➤ Has the drive belt tension been checked?
(The check must be repeated after 24 operating hours)
➤ Is the machine anchored to the floor without stress?
➤ Are the access doors and panels of the sound enclosure inserted
and latched? (Option H12)
–
Tab. 36 Installation conditions checklist
7.4 Re-greasing the motor bearings
➤ The motor bearings of motors with re-greasing facility must be re-greased with bearing grease
prior to the initial commissioning of the machine.
Further information Further information on re-greasing motor bearings can be found in chapter 10.10.1.
7.5 Checking the direction of rotation
7.5.1 Drive motor
If the block rotors turn in the wrong direction the direction of airflow through the machine will also
be wrong.
An arrow indicating direction of rotation is fixed on the side of the block at the drive end and at the
belt guard.
The drive shaft must rotate counter-clockwise when viewed from the end of the shaft.
1.
Wrong direction of rotation!
The machine can be damaged by ingesting foreign bodies or excessive vacuum force.
➤ Ensure the correct direction of rotation.
2. Remove the inlet silencer filter maintenance cover on the inlet silencer or inlet filter and/or re‐
move the inlet check valve.
3. Verify the direction of phase rotation with a phase sequence meter.
4. If the direction of rotation is incorrect, interchange the phases L1 and L2.
You do not have a phase sequence meter?
➤ Switch the machine on and off again after 1 second.
➤ Compare the direction of rotation of the motor with the arrows on the belt guard and the
block casing.
➤ If the direction of rotation is incorrect, interchange the phases L1 and L2.
7.5.2 Option H12
Ventilator fan (sound enclosure)
An arrow can also be found on the ventilator fan to indicate its correct direction of rotation.
The ventilator fan must blow air out of the sound enclosure.
➤ Single-phase fan: If the direction of rotation is incorrect, switch the electric connection in the
terminal box of the fan. Instructions regarding "Right" and "Left" operation are provided in the
cover of the terminal box.
➤ Three-phase fan: If the direction of rotation is incorrect, interchange the phases L1 and L2.
7
Initial Start-up
7.4
Re-greasing the motor bearings
Number: 9_9572 28 USE
Installation and Operating Manual Rotary lobe blower
HBPI pr
59