Heatrae Sadia ElectroMax Installation & Servicing Instructions Manual page 38

pump (see Diagram 40)
a. Drain primary circuit.
b. Unscrew top of Pump electrical housing
and remove by pulling upwards.
c. Unscrew Pump cable securing gland.
Disconnect Pump connections from
terminals by pressing the spring
loaded clips. Remove Pump cable.
d. Unscrew the union nuts from each end
of the Pump body and slide back along
pipework.
e. The Pump can now be lifted from the
unit.
f. Replacement is a reversal of the
above procedure. Ensure the Pump
sealing washers are correctly located
before tightening union nuts. Ensure
the correct electrical connections are
made (Brown wire to "L" terminal, Blue
wire to "N" terminal, Green/Yellow wire
to " " terminal). Secure the electrical
cable by tightening the Cable Gland.
Pressure Relief Valve (see Diagram 41)
a. Drain primary circuit.
b. U n s c r e w t h e P r e s s u r e G a u g e
connection and remove from Pressure
Relief Valve body.
c. Unscrew compression connections at
inlet and outlet of the valve.
d. Remove Pressure Relief Valve.
e. Replacement is a reversal of the above
procedure. Ensure all connections are
correctly made and tight.
38 Installation & Servicing Instructions
Diagram 40 Pump Removal
Pump Extension
Pump
Note: Fascia Panel not shown for clarity
D i agram 41 Pressure
R el i ef Val ve R em oval
Pr essur e
Rel i ef
Val ve
Tem per at ur e /
Pr essur e
Rel i ef
Val ve
Boost
I m m er si on Heat er
Auto Air
Vent
O Ring
O Ring
Pump
Union
Nuts
Pr essur e G auge
Connect i on