Baxi Potterton LPG Service Manual download pdf (Page 41)

14.0 Changing Components

14.13 Pump - Head Only (Fig. 76)

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 replacement Grundfos 15-60 head can now

be fitted. Connect the pump wiring to the new head. The

pump speed must be set to 3 (Fig. 77).

4. Reassemble in reverse order.

14.14 Pump - Complete (Fig. 78)

1. Drain the primary circuit.

2. Undo the two screws securing the body to the pipe and

manifold and draw the pump forwards.

3. 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.

4. Unscrew the automatic air vent from the pump body.

5. Connect the wiring to the new pump. Examine the ‘O’

ring seals on the return pipe and manifold, replacing if

necessary.

6. Fit the air vent to the pump body and reassemble in

reverse order.

14.15 Automatic Air Vent (Fig. 78)

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 fit it

to the new automatic air vent.

3. Reassemble in reverse order.

Pump Setting

Socket Headed

Screw

Pump Head

Pump Body

Automatic Air

Vent

Fig. 76

Fig. 78

Fig. 77

Pump Wiring

Cover

Pump Wiring

Cover

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 55 56

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Baxi Potterton LPG Service Manual Page 41

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