Varisco S.p.A.
Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY
Tel.+39.049.8294111 Email: [email protected]
Fax+39.049.8076762 Web: www.variscospa.com
19
WARNING When inserting the rotor into the stator, your fingers may get hurt.
9.3 ROTOR/JOINT DISASSEMBLY AND JOINT REPLACEMENT
WARNING When re-assembling joints with sleeves, sleeves shall be dipped into hot water in order
to soften them, thus easing their fitting in their cavities. To re-assemble them, follow the
disassembling instructions backwards.
9.3.1 PRELIMINARY MEASURES
1. To remove the stator, follow instructions in Chap. 9.1.
2. Extract the pump body in the direction of the black arrow (see below). Then the drive joint
connected to the rotor will be visible.
3. Follow the instructions given in this paragraph for each type of joint.
9.3.2 JOINT TYPE SN1
1. Move the sleeve backwards (1), following the direction of the arrow.
2. Remove the Pin (2). The rotor or hollow shaft drive then will be free.
SN1
This kind of joint has no spare parts available. In case of malfunctioning it shall be fully replaced.
9.3.3 JOINT TYPE SN2
1. Remove the clamps (3).
2. Remove the sleeve (4) by levering with a screwdriver.
3. Remove the 2 retaining rings (5) that holds the pin. Then, after removing the pin and the
spider, the rotor will be free and it will be possible to replace it.
SN2
