S&P CXRT Serie Instrucciones De Montaje Y Mantenimiento página 30

Service and repair
Table 4.5 Dimensions R, S and T (Tolerance ± 1 mm).
Impeller LF
Fan size
R (mm)
020 5.5
022 7
025 7.5
028 8.5
031 9.5
035 10.5
040 12
045 13.5
050 15
056 17
063 19
071 21
080
090
100
112
125
140
4.9 Motor replacement of the direct drive fan CXRT
See first Section 4.3 (Before maintenance).
Make sure that you can access the inlet opening (note
this in assembly). In principle there are two alternative
methods:
a) Remove the inlet side flexible connection duct and
(possibly) part of the inlet ducting.
b) Remove the flexible connection ducts.
Remove the fan from its base frame and move
it to the direction of service passage so that you can
access the inlet opening and the hub securing.
If you need to change to a larger or smaller motor,
check the shaft diameter. If the shaft diameter is
changed, you will also have to change the impeller, so
that the shaft of the new motor will fit the impeller.
The impeller is removed, when needed, through the
outlet opening.
GTLB-1 and GTLF-1:
– Support the impeller in the fan casing first so that
it will not fall.
– Remove the hub securing screw (Figs. 4.10 and 4.11).
– If necessary, also remove the inlet cone from the
LB-fan in order to facilitate work.
– Remove the motor from the bracket (Fig. 4.12).
– If required, remove the impeller from the motor shaft
with a puller (there is a groove in the hub for a puller)
through the inlet opening.
– Replace the motor.
Impeller LB and HB
S (mm) T (mm)
- -
1.5 7.8
2 7.8
2 9.3
2.1 9.5
2.2 12.8
3.7 18
4.3 17
4.7 20
7.5 28
4.8 26
4.4 26
Fig. 4.10 GTLF-1-020...050 Remove the hub
securing and the impeller from the motor shaft.
Fig. 4.11 GTLB-1- 022 ...071 Remove the hub
securing and the impeller from the motor shaft.
Fig. 4.12 Remove the motor from the bracket.
CXRT, GT
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