Nicotra Gebhardt RLM E6 Betriebsanleitung Seite 37

BA-CFD-RLM-ATEX 4.2 – 01/2023
7.3. Carrying out the Installation
Figure 7-2: Gap width
Figure 7-3: Measured
points
1. The fan or base frame must be fixed without stressing and free of forces
to the supporting structure.
2. loose fitted AVM to be regularly placed around centre of gravity and
definitely fixed. Check whether the AVM is evenly under load.
3. Ensure that the fan is earthed in accordance with regulations. The anti-
vibration mounts themselves do not ensure electrical transmission.
No forces or vibrations may be transferred from other plant parts to the
fan (flexible connection)!
The flexible connections (ATEX) at intake and/or discharge are installed,
well aligned, freely moving and earthed plant side.
The AVM are freely moving and under even load!
The impeller is turning idly and does not touch the intake cone! (Note
minimum gap, see 7.4)!
The distances from the impeller to the plant parts on site are checked and
meet the requirements for explosion protection.
The stability of the fan against collapse of the fan has been checked.
7.4 Checking the Gap Dimension on the Fan
Check gap between impeller and inlet cone and between impeller
border and pressure measuring nipple of the volumeter against
chart values below!
Table 7-1: Gap width
RLM
2225
2528
2831
3135
3540
4045
4550
5056
1. Measure the gap and ensure that the width of the gap does not fall below
the threshold in any phase of the rotation (manual rotation).
2. Carry out measurements on four 90° points on the circumference.
Ensure that the gauge is placed on the outer diameter of the inlet cone.
Gap width „s"
2,0
2,0
2,2
2,4
2,7
3,0
3,4
3,8
2
3
4
RLM Gap width „s"
5663 4,3
6371 4,8
7180 5,4
8090 6,0
9010 6,7
1011 7,5
1112 8,5
1214 9,5
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English
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