Bosch DANESMOOR UTILITY 32-50 Instruction Manual Page 39

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INSPECTION AND SERVICE
CAUTION: ISOLATE THE WATER,
ELECTRICITY AND OIL MAINS SUPPLIES
BEFORE STARTING ANY WORK AND
OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
Routine servicing:
To maintain efficient boiler operation, the
following should be carried out at least once
a year:
Carry out a pre-service check and note any
operational faults:
Pre-Service Check:
1Lift the top panel (A) upwards to disengage
the ball stud connections (B) and remove.
2 Pull upper front panel squarely forwards
to disengage ball stud connections and
remove from control box (G).
Remove securing screws (C) from each
side.
Slide control box (G) outwards to its full
extent.
3Remove securing screws (F) from front
panel (E).
Lift panel (E) up and away from the
supporting ledge (D) on the boiler.
Operate the appliance and system and note
any faults which may need to be corrected
during the service.
Switch off and electrically isolate the
boiler.
4Depress locking ears and unplug burner
lead (H) from control box (G).
5RS flue only: loosen clip (J) to detach air
duct (K) from the air intake box.
6 Sterling burner:
Release burner retainers (M).
Lift burner up to release blast tube (L)
from heat exchanger, taking care not to
over strain the flexible oil hose/s or
connections, and store safely away from
the boiler.
6aRiello burner:
Remove burner retainer nut (M).
Lift burner up to release blast tube (L)
from heat exchanger, taking care not to
over strain the flexible oil hose/s or
connections, and store safely away from
the boiler.
See the following instructions for detail of
some of the service requirements listed
below:
Check and clean the burner.
Replace burner nozzle and flexible oil
hose/s.
Check and clean the baffle retainers.
Check and clean the baffles.
Check and clean the heat exchangers
surfaces.
Check the combustion chamber access
door insulation board.
Check that the flue system is unobstructed
and clean as necessary.
Clean or replace all oil filters.
Check that the condensate system is not
obstructed, clean and refill the condensate
trap as necessary.
31
INSPECTION AND SERVICE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716
109 711B 07.2010
39
SERVICING
& SPARES
8 716 109 711 b 07.10 14/7/10 09:59 Page 39
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