Pag.21 (Funct. and Maint.Manual n.03 – Fourth edition) OMI.EN-PCP001 R01
3. The operation is completed by re-inserting the pump body, stator, tie rods and pipe
union.
NOTE: Certain types of stators have at their end an integrated sealing profile.
In this case no O’Ring washers are needed (see picture Chap. 9.1.1), neither at the union
side nor at the pump body side. In any other case, they shall be replaced every time the
parts are disassembled.
HAZARD! Do not tighten the pump body threaded cap too strongly (11) (pic. Chap.
9.1.1), since its cone-shaped thread could damage the pump body itself. The tightening
torque is about 40-50 Nm. Do not over-tighten screws and tie rods. See table below:
Screw Dia M6 M8 M10 M12 M16 M20 M24 M30
Torque (Nm) 8 15 30
45
75
80 100 12
DANGER! When inserting the rotor into the stator, your fingers may get hurt!
9.3 Rotor / joint disassembly and joint replacement
DANGER! 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.
