Disassembly And Assembly; General; Special Tools; Back Pull Out-Unit - Johnson Pump SPX Flow CombiLine Series Instruction Manual

CombiLine-CombiBlocHorti

7 Disassembly and assembly

7.1
7.1.1
7.1.2
7.2
7.2.1
7.2.2
7.2.3
CL-CBH/EN (1901) 7.6

General

Special tools

Special tools can make certain operations easier. The instructions will indicate when
these tools should be used.

Back Pull Out-unit

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).

Precautions

Before the pump can be repaired it first has to be removed from the system. Take the
following steps:

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.

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.

Liquid draining

1 Close all valves wherever necessary.
2 Drain the system to the extent that there is no liquid left in the pump.
Be careful not to touch the liquid, it may still be hot!
3 A pump that is used for heating should be left to cool down first.
Disassembly and assembly 33