ENGLISH
23
CHECKING AND CHANGING THE SEALING OIL
DRENAG 1000-1200
To perform this operation you must unscrew the six screws of the flange (45) so as to
be able to remove the flange (105) and the outer jacket (77). Unscrew the three screws
of the filter cover (136) and remove the cover (92) and the filter (42). Unscrew the four
screws of the pump body (52) and remove the pump body (1). Using a suitable wrench,
unscrew the nut (18) that blocks the impeller, holding the impeller (4) still with your
hand. Remove the impeller (4), if necessary with the aid of levers. Recover the tab (17)
and the sand protection ring (15), unscrew and remove the cap (64). Tilt the pump so as
to drain the oil out of the hole of the cap (64) and pour it into a container.
Analyse the oil: if you find any particles of water or abrasive materials (for example,
sand) it is advisable to check the condition of the mechanical seal (16) and to have it
changed if necessary (at a specialized centre). In this case change the oil too, with
about 170 gr of oil type MARCOL 152 ESSO.
Top up the oil level inside the sealing oil chamber using a special funnel inserted in the
hole in the cap (64). Screw the drainage cap (64) back on and perform the disassembly
operations in inverse order to reassemble the pump after having spread a suitable
amount of teflon grease in the seat of the sand guard (15).
Attention! During assembly, fit all the O-rings correctly, without damaging them
.
OLD OIL MUST BE DISPOSED OF AS REQUIRED BY THE REGULATIONS
IN FORCE.
(Fig.7)
18
17
15
92
136
42
4
1
45
52
77
64
16
105
