Potterton Performa 30 HE Installation & Service Instructions Manual page 33

12.0 CHANGING COMPONENTS
12.12 Pump - Head Only (Fig. 57)
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. 58).
4. Reassemble in reverse order.
12.13 Pump - Complete (Fig. 59)
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.
12.14 Automatic Air Vent (Fig. 59)
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.
Publication No. 5111815
Pump Wiring
Cover
Socket Headed
Screw
Pump Setting
Fig. 58
Pump Wiring
Cover
Pump Body
Pump Head
Fig. 57
Automatic
Air Vent
Fig. 59
33