Baxi Potterton 30 HE manual Pump Head Only Fig, Pump Complete Fig, Automatic Air Vent Fig

Pump Wiring
Cover	Pump Body

Socket Headed

Screw

Pump Head

Fig. 71

Pump Setting

Automatic Air

14.0Changing Components

14.12Pump - Head Only (Fig. 71)

1.Drain the primary circuit and remove the socket head screws securing the pump head to the body and draw the head away.

2.Undo the screw on the pump wiring cover and remove the cover. Using a suitable flat bladed screw driver press the cable securing levers downwards to release each wire after noting their position.

3.A standard Grundfos 15-60 replacement head can now be fitted. Connect the wiring to the new head.

The pump speed must be set to 3 (Fig. 72).

4.Reassemble in reverse order.

14.13Pump - Complete (Fig. 73)

1.Drain the primary circuit and unscrew the automatic air vent from the pump body. Undo the two screws securing the body to the pipe and manifold and draw the pump forwards.

2.Undo the screw on the pump wiring cover and remove the cover. Using a suitable flat bladed screw driver press the cable securing levers downwards to release each wire after noting their position.

3.Connect the wiring to the new pump. Examine the ‘O’ ring seals on the return pipe and manifold, replacing if necessary.

4.Fit the air vent to the pump body and reassemble in reverse order.

14.14Automatic Air Vent (Fig. 73)

1.	Drain the primary circuit and unscrew the automatic
air vent from the pump body.
2.	Examine the ‘O’ ring seal, replacing if necessary, and

Fig. 72

Vent

fit it to the new automatic air vent.

3. Reassemble in reverse order.

Pump Wiring

Cover

Fig. 73

© Baxi Heating UK Ltd 2007 41