Dismantling The Head - Seals - Pratissoli KT Serie Manual De Reparación

To reassemble the various components, perform the
operations listed above in reverse order to par. 2.2.1.
Reassemble the valve unit (Fig. 24) to facilitate insertion of the
valve guide in the seat, use a hammer, acting on the whole
circumference (Fig. 25).
Insert the suction and outlet valve units,
checking that they are fully inserted in the head
seat.
Then apply the valve covers and calibrate the
respective M14x40 screws (suction valve cover)
and M12x35 (outlet valve cover) screws, for the
values of the torques and tightening sequences
follow the instructions in chapter 3.
2.2.3
Replacement of the seals is necessary from the moment you
begin to detect water leaks from the drainage holes provided
on the back of the pump casing, and at the intervals indicated
in the "PREVENTIVE MAINTENANCE" table in chapter 11 of the
Use and maintenance manual.
A) Unscrew the M10x110 head fixing screws as indicated in
(Fig. 26).
Fig. 23
B) Separate the head from the pump casing.
C) Extract the high pressure seals from the head and the
low pressure ones from the support, using simple tools
as indicated in (Fig. 27), being careful not to damage the
respective housings.
Fig. 24
Fig. 25
22
Dismantling the head – seals
Fig. 26
Fig. 27