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1.3
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~ORCESTER
INSTALLATION & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR
30CD,/40CD'
Conven\1onal
Bosch
Group
6 720 614 556a (2007/07)
INSPECTION AND SERVICE
COMPONENT
ACCESS
1.
Removing outer case
1.
Remove bottom panel
by
pulling it forward
and off.
1.1
Undo but do
not
remove the 2 screws
(A) securing
boiler casing
at
the bottom
of
the appliance.
1.2 Pull upwards
to
release the
clip
(B) on
top
of
the boiler.
1.3
Pull
case forward and remove.
2.
Adjusting boiler control
to
service position
2.1
Remove screw (X) securing control.
2.2 Gently pull forward until it comes to
rest
in
service position .
Primary
Heat
Exchanger
There is a special accessory kit available
specifically
designed for cleaning the heat
exchanger.
If required order 7 719 001 996.
3.
~
Check
fan pressure at the test point next
to
the fan using
an
electronic manometer
~The
boiler must be run at maximum output.
Pressure will read negative and be greater
than:
30CDi
· 3.9 mbar
40CDi
· 4.4 mbar
~
Pressures measured
below
these figures
will indicate that the heat exchanger will
require cleaning.
INSPECTION AND SERVICE
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