Glow-worm Flexicom 18sx - Replacement of Parts - Pump and Safety Valve Replacement; Pump Head and Safety Discharge Valve Replacement

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15 Replacement of Parts
15.17 Pump (head only)
For access, refer to section 15.1.
Refer to section 15.2 and drain the boiler heating circuit.
Refer to diagram 15.6.
Remove the four cap head screws.
Carefully remove the pump head together with cable. Do not
strain cable.
Support the pump head, unscrew cable cover at the side of
pump head and remove.
Disconnect wiring from pump head.
Reconnect wiring to new pump head and t cover.
Fit the new pump head with ‘O’ ring.
Rell, vent and pressurise the boiler and check for leaks.
15.18 Safety Discharge Valve
For access, refer to section 15.1.
Refer to section 15.2 and drain the boiler heating circuit.
Refer to diagram 15.7.
Undo the safety discharge valve union and remove from the
pipework.
Remove the retaining clip and withdraw the safety discharge
valve.
Fit new ‘O’ ring.
Rell, vent and pressurise the boiler and check for leaks.
13067
PUMP HEAD
CABLE COVER
CAP HEAD
SCREWS (4)
Diagram 15.6
Diagram 15.7
12667
Diagram 15.8
14736
AUTOMATIC
AIR VENT
RETAINING
CLIP