11.0 Changing Components
36
11.20
Pump - Head Only
(Figs. 82 & 83).
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
screwdriver 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.
4. Reassemble in reverse order.
11.21
Pump - Complete
(Figs. 83 & 84).
1. Drain the primary circuit and unscrew the
automatic air vent from the pump body. Undo the
union nuts on the inlet and outlet connections and
draw the pump forwards.
2. Undo the screw on the pump wiring cover and
remove the cover. Using a suitable flat bladed
screwdriver press the cable securing levers
downwards to release each wire after noting their
position.
3. Connect the wiring to the new head and
set
the pump speed to 3.
Using new sealing
washers fit the new pump, fit the air vent to the
pump body and reassemble in reverse order.
11.22
Automatic Air Vent
(Fig. 84)
1. Drain the primary circuit and unscrew the 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, repressurising
the system if necessary.
Pump Setting
Socket Head
Screw
Pump Head
Pump Body
Pump Wiring Cover
Pump Wiring Cover
Automatic Air Vent
Fig. 81
Fig. 82
Fig. 84
Fig. 83
