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-··
REPLACEMENT
OF
PARTS
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23.1
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REPLACEMENT
OF
PARTS
21.
Pump head
~
Ensure the appliance has been fully
drained.
21.1
~
Disconnect
the electrical
connections
from the
pump
following
steps
1
to
4.
21.2
~
Remove the four Allen bolts (A) secur-
ing the
pump
at each corner.
21.3
~
Gently pull the
pump
towards
you and
remove.
~
To
refit,
follow
the above
in
reverse.
22. Pressure gauge
~
Ensure the appliance has been fully
drained.
~
Withdraw
the spring
clip
from the pres-
sure sensing head housing.
~
Undo
the nut on the rear
of
the pres-
sure gauge.
~
Remove the pressure sensing head
and pressure gauge capillary from the
housing.
~
To
refit,
follow
the above
in
reverse.
DO
NOT
omit the washer from the capil-
lary
when fitting a replacement gauge.
23. Flow sensor, flow restrictor
housing and
filter
~
Ensure the
domestic
hot
water
circuit
is fully drained.
~
Disconnect
the electrical
connection
to
the turbine.
~
Remove the spring
clip
from the hous-
ing and move the brass
pipe
to
one side.
23.1
~
Withdraw
the
flow
sensor and filter
from the housing.
~
Using the cartridge tag,
withdraw
the
flow
restrictor housing. If the regulator
housing has
become
stuck, a pair
of
long
nosed pliers may
be
used to
grip
the
housing.
~
To
refit,
follow
the above
in
reverse.
Ensure any seals that have been
dis-
turbed
are renewed.
24. Flow regulator
~
Remove the
flow
restrictor housing
(See Removing the
flow
sensor,
flow
regulator and filter).
24.1
~
Using a small Allen key
or
similar, push
the
flow
restrictor cartridge
out
of
its
housing.
~
To
refit,
follow
the above
in
reverse.
Ensure any seals that have been
dis-
turbed
are renewed.
25. Drain
tap
~
Ensure the appliance has been fully
drained.
25.1
~
Rotate the drain tap fully anticlockwise.
25.2
~
Withdraw
the drain tap from its housing.
~
To
refit,
follow
the above
in
reverse.
Ensure any seals that have been
dis-
turbed
are renewed.
INSTALLATION & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR
25CDI/30CDI/37CDI/42
co;
~ORCESTER
6 720
613
700a
(2006/11)
Bosch
Group
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