DRAGFLOW EL7.5 - Impeller Clearence Checking

DRAGFLOW S.r.l. - Sede legale: Via Satiro, 11 – 37121 VERONA Italy
Sede amm.: Via Paesa – 46048 ROVERBELLA (MN) Italy ● Tel. +39 0376 1685400
Fax +39 0376 1685499 - Cod. Fisc e P. IVA : IT 02757460239 – R.E.A. Verona n. 280092
Registro Impr. Di Verona n. 189595/1997 Capitale Sociale € 10.400 interamente versato
EL7.5 - EL12.5 (S - SS) User manual - ENG 40/70
5.3.3 Impeller clearence checking
This check must be performed every 150 operating hours in order to prevent a
performance loss of the pump.
For the impeller clearence checking, proceed as follows (see Fig. 21):
- remove the strainer (see Strainer section);
- using a feeler, check that the space between the lower wear plate [7] and the
impeller [1] doesn’t exceed 1 mm;
- if the measured clearence is more than 1 mm, proceed immediately with the
clearence adjusting (see Impeller clearence adjusting section).
Fig. 21
Reassemble all the components in reverse order to restore the pump at the initial
conditions. Before reassembling, check the good conditions of any bolt and eventually
replace the damaged ones.
[7]
[1]
[7]
[1]