SPXFLOW CombiFlexBloc Series, Instruction Manual, Page: 28 / 79

26 Disassembly and assembly
CFB/EN (1808) 2.4
7.4 Disassembly and assembly Top Pull Out unit
➢
The Top Pull Out unit and the electric motor of large pumps are too heavy to be lifted by
hand. Use appropriate hoisting equipment.
CombiFlexBloc pumps use a Top Pull Out system. The electric motor with the lantern
piece, the stuffing box cover/pump cover and the impeller can be dismantled as a whole.
In this way the pump can for the most part be dismantled, without disassembling the
suction and discharge lines.
7.4.1 Disassembly Top Pull Out unit
1 Open the terminal box and loosen the wires.
2 Remove the guards (0270).
3 In case of a water cooled stuffing box (S4): Disconnect the cooling water supply line
to the stuffing box.
4 Disconnect the cooling water supply lines (1420) to the stuffing box cover (0110).
!
NEVER start dismantling by loosening the motor bolts (0850) and nuts (0900).
This may result in irrepairable damage to the mechanical seal and the
impeller!
5 Remove the Allen screws (0800).
6 Pull the motor together with the entire lantern piece out of the pump casing. The Top
Pull Out unit large pumps is very heavy. Support it with a beam or hang it in a pulley
sling.
7.4.2 Assembly Top Pull Out unit
1 Mount a new gasket (0300) for the pump casing and lower the Top Pull Out unit in
the right position into the pump casing. Take care not to damage the gasket (0300).
2 Tighten the Allen screws (0800) crosswise.
3 Connect the quench supply line (1420) to the stuffing box cover(0110).
4 In case of a water cooled stuffing box (S4): Connect the cooling water supply line to
the stuffing box.
5 Fit the guards (0270).
Figure 3: Disassembly Top Pull Out unit.