Disassembly; Disconnecting The Motor; Removing The Pump; Replacing The Wear Ring Cbh - Johnson Pump SPX Flow CombiLine Series Instruction Manual

7.3
7.3.1
7.3.2
7.4
7.4.1
34

Disassembly

Disconnecting the motor

Make sure that the electricity supply to the pump has been disconnected
and that the pump cannot be switched on by others!
1 Open the cover of the terminal box on the motor.
2 Loosen the supply wires. Mark the wires and the corresponding terminals for later
reconnection.

Removing the pump

In case the complete pump must be removed:
1 Disconnect the electric motor, see paragraph 7.3.1 "Disconnecting the motor".
2 Loosen the bolts of the connection flanges.
3 For CBH: Loosen the fixation bolts of the pump feet.
4 Remove the pump from the piping.

Replacing the wear ring CBH

Disassembly
After removing the Back-Pull-Out unit the wear ring can be removed. In most cases the
ring has been fixed so tightly that it cannot be removed undamaged.
b
d
Figure 4: Removal of wear ring.
1 Measure the thickness (d) and the width (b) of the ring, see figure 4 A.
2 Make a centre hole in the middle of the edge of the ring at two opposite points, see
figure 4 B.
3 Use a drill with a diameter just a little bit smaller than the thickness (d) of the ring and
drill two holes in the ring, see figure 4 C. Don't drill deeper than the width (b) of the
ring. Take care not to damage the fitting edge of the pump casing.
4 Use a chisel to cut the remaining part of the ring thickness. Now you can remove the
ring in two parts from the pump casing, see figure 4 D.
5 Clean the pump casing and carefully remove all bore dust and metal splinters.
Disassembly and assembly
A
C
B
D
CL-CBH/EN (1901) 7.6