Operation &
Maintenance Manual
Pump
RW-R
12/28
Edition 1
HSC
02-W51
782-007-GB
6.3
Checkpoint installation - V
In some applications it is possible that the pump will not
work due to presence of air in the volute.
Lifting the pump a bit (25mm / 1inch) while running may
solve the problem.
When the problem repeats, an air-venthole can be
drilled in the coupling adaptor and a special gasket must
be fitted. (see fig. 6.5).
When air is present, this will escape through the hole.
When the fluid arrives, the special gasket will close the
hole.
-
Take part (1) (fig.6.6).
-
Drill a 8mm hole in the cast boss on top
of the coupling adapter.
-
Deburr the hole.
-
Place a special gasket (3) (Fig. 6.7)
-
Mount the coupling adapter (1) to the
pump (2).
Partnumbers for special gaskets.
Coupling type: partnumber:
Neoprene
Viton
V 65/ V 80 761-056
761-071
V 100 761-057
761-072
Fig. 6.5
Fig. 6.6
Fig. 6.7
Air
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