Johnson Pump SPX Flow CombiLineBloc, Instruction Manual

Page: 35 / 67

CLB/EN (1901) 6.6
Disassembly and assembly 33
CombiLineBloc
7 Disassembly and assembly
7.1 Precautions
Before the pump can be repaired it first has to be removed from the system. Take the
following steps:
7.1.1 Switch off the electricity supply
1 Disconnect the electricity supply to the pump by setting the pump switch on the
switchboard or, if available, the operation switch, to " O ".
2 Remove the fuses.
3 Place a warning plate at the switchboard cabinet.
7.1.2 Disconnecting the electricity supply
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Make sure that the electricity supply to the pump has been switched off 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.
7.1.3 Support of the piping
If the entire pump has to be removed, you have to make sure that the piping is properly
supported. If this is not so, you should first support and bracket the piping.
7.1.4 Liquid draining
1 Close all valves wherever necessary.
2 A pump that is used for heating should be left to cool down first.
3 Drain the system to the extent that there is no liquid left in the pump.
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Be careful not to touch the liquid, it may still be hot!
7.2 Removing the pump
7.2.1 Back-Pull-Out system
The pump is designed with a Back-Pull-Out system. This means that in case of repairs,
the pump casing does not have to be removed from the piping (unless the fault is in the
pump casing itself).
For maintenance and repairs usually it is not necessary to remove the whole pump from
the piping. You only have to remove the integrated pump cover/motor-part, the so called
'Back-Pull-Out unit'. To do this, follow the instructions from paragraph 7.3.1
"Disassembling the Back-Pull-Out unit".