Heatrae Sadia ELECTROMAX Installation & Servicing Instructions Manual page 38

9.3.4 Removing the Primary circulating
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.
9.3.5 Removing the Primary System
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
Diagram 41 Pressure
Relief Valve Removal
Pressure
Relief
Valve
Temperature /
Pressure
Relief
Valve
Boost
Immersion Heater
Auto Air
Vent
O Ring
O Ring
Pump
Union
Nuts
Pressure Gauge
Connection