Glow-worm Flexicom hx - Manual (Page 42)

0020107230_04 - 12/14 - Glow-worm
MAINTENANCE
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Diagram 14.6
14385
Diagram 14.7
14402
Remove the heat exchanger
Undo the screws securing the fl anged elbow on the top right
hand side of the heat exchanger and remove the retaining clip
from the fl anged elbow, see diagram 14 5.
Remove retaining clip from the fl anged elbow on the bottom of
the heat exchanger, see diagram 14.4.
Remove screws securing the heat exchanger, one on top and
one underneath the heat exchanger, see diagram 14.6.
Lift up heat exchanger slightly to disengage it from its hanging
bracket.
Remove the heat exchanger by pulling forward, then pulling to
the right to disengage the return pipe and tilting backwards to
ease removal complete with sump. Discard the heat exchanger
and fl anged elbows.
Remove the burner
Remove the six fl anged nuts and two studs that secure the
burner, note that the two studs also hold the fan clamping
bracket, see diagram 14.7.
Taking great care not to damage the surface of the burner.
NOTE: Replace the burner gasket and follow the tightening
sequence when re-fi tting the burner, see diagram 14.7.
NOTE: Fit all replacement gaskets and seals when re-fi tting
parts.
Refer to Section 11.
Fill the boiler heating system.
Re-pressurise (sealed sysem only)
Check for any leaks.
Vent all air from the system.
Test for gas tightness, earth continuity, polarity, short circuit and
resistance to earth.
Light the boiler and carry out functional checks.